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Message started by MeeLee on 01/28/16 at 06:41:14

Title: Interstate speed improvements?
Post by MeeLee on 01/28/16 at 06:41:14

Hi everyone,
Been browsing through some interesting topics on getting the S40 riding at interstate speeds.
Mostly rejetting, and grinding out the exhaust port, was said to improve mpg and top speed.

Almost every topic I see, is about the top speed of the S40 being limited due to:
1- vibrations
2- lack of HP
3- too high rpm.

Vibrations seem to appear around 80mph, and merely an annoyance, not a limitation;
But they do hold people from going any faster.

Essentially lowering rpm by 10%, would move up the vibrations by almost 10mph.
Number 1 can be solved, by regearing the bike, lowering rpm.
I wanted to know if there is a front pulley for sale with 1 tooth up from stock, that fits?

I'm not too fond of the pictures I saw of the chain conversion, unless a chain guard can be used. The stock one preferably, even if the rear sprocket is 3/4 the size of the pulley.

To make a re-gearing possible, the engine needs more hp (for top speed).
I read about someone drilling out the exhaust ports with a dremel. It should increase hp, and mpg.
Add a more free flow exhaust if necessary  (or in some cases, replace the air filter with a more modern one), and compensate with a slightly bigger main jet, for a richer AF mixture. Should give at least one to 3 extra hp, which is 10%.

Any other suggestions, concerning pulley system, or a nice looking, affordable chain kit with chain guard?

Also, any ideas about making the engine vibrate less by balancing it out?
I once saw a video of a guy who would just drill a .2" by .2" hole in the counterbalance of his motor; which reduced the weight of the counterbalance, and made the engine run smoother.

Title: Re: Interstate speed improvements?
Post by Dave on 01/28/16 at 06:56:44

Gearing improvements can be made by going to a 140/90-15 tire, and by adding the Kawasski Pulley Conversion.  The front pulley along works with the stock engine, and is OK with a windshield and bags being added to the bike.  The double pulley conversion is most likely a bit too high of gearing for a stock engine.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1384949185

Modifying the engine the exhaust port alone most likely doesn't do much of anything.....the biggest power improvements come from using a Stage 1 or Stage 3 cam, and switching over to a Wiseco piston that has higher compression (then the exhaust port changes help).

I have no idea about modifying the counter balance system.....it would require a thorough analysis of the engine - it is not something to be done by just winging it.  I believe that Suzuki most likely got it right as the engine is far smoother than the single cylinder bikes are without this system.

At higher engine speeds - the engine uses/loses oil, and it becomes necessary to check and add oil more frequently.

Title: Re: Interstate speed improvements?
Post by verslagen1 on 01/28/16 at 08:24:13

From your post, I can't tell if you've ever rode a savage.
Everything you're inquiring about is subjective.

What is your experience with the savage?

Title: Re: Interstate speed improvements?
Post by Serowbot on 01/28/16 at 08:50:47

Most practical option, is a bigger bike....
This bike ain't intended for Interstates... (that said, it will do it), but it will never do it well...

You can 3 or 4 hp easy,... 8 or 10 the hard way...
Muffler, filter, rejet... add bore and cam.
$100,...   $1,000...
The last 4 horsies cost way more than the first ones... :-?

Title: Re: Interstate speed improvements?
Post by Dave on 01/28/16 at 10:12:45


2036213C24313C27530 wrote:
You can 3 or 4 hp easy,... 8 or 10 the hard way...
Muffler, filter, rejet... add bore and cam.
$100,...   $1,000...
The last 4 horsies cost way more than the first ones... :-?


Never thought of it that way - but you are correct.

And the last 4 horsies continue to cost.....as the Wiseco requires the use of premium fuel.

Title: Re: Interstate speed improvements?
Post by Kris01 on 01/28/16 at 13:46:43

I'd be interested to see someone weigh the counter balance system and the reciprocating assembly to see how much money Suzuki tried to save. This engine is far smoother as-is than a lot of thumpers out there.   ;)

Title: Re: Interstate speed improvements?
Post by Rodger on 01/28/16 at 14:37:02

"...far smoother as-as than a lot of thumpers...."

Before I bought my new S40, I rode a Yamaha SR400. It only took 6 blocks for me to realize that little "butt-buzzer" wasn't for me.

Title: Re: Interstate speed improvements?
Post by verslagen1 on 01/28/16 at 15:08:16


734A514B0809380 wrote:
I'd be interested to see someone weigh the counter balance system and the reciprocating assembly to see how much money Suzuki tried to save. This engine is far smoother as-is than a lot of thumpers out there.   ;)

We do have a counter balancer so it's not a matter of money.
The problem is there are multiple sources of vibration and it's nearly impossible to cancel them all out until you go BMW route of opposing cylinders.

naturally we have a balanced crank, but you have a vertically reciprocating piston/rod and a horizontally reciprocating rod resulting in 4 orders of vibration.  the counter balancer removes some of the vertical vibes but adds some horizontal if I remember my dynamics textbook correctly.

Title: Re: Interstate speed improvements?
Post by Paladin. on 01/28/16 at 16:51:33


725A5A735A5A3F0 wrote:
... S40 riding at interstate speeds...
1- vibrations
2- lack of HP
3- too high rpm.

Vibrations seem to appear around 80mph....

Most practical option, is a bigger bike --  Serowbot
The Savage will never be a silk purse.  IMHO:

On an Interstate trip from LaLaLand to Kentucky...  vast majority of traffic cages were running 5 mph over the speed limits, commercial traffic ran at the speed limit, and the motorcyclists ran 5 mph under the limit.   A stock Savage can comfortably run 85 mph.  At 70 mph the Savage is doing about 40Hz, and for me the vibrations are relaxing.

I had no problem doing 500+ miles a day on the Savage.  However, if you want to cruise an actual 80 mph you need a bigger bike.

Title: Re: Interstate speed improvements?
Post by Kris01 on 01/28/16 at 16:52:10

I wouldn't think you could dampen a single cylinder engine enough to call it "smooth" no matter what you do. I think we have an engine that's as good as it gets in that department.

Title: Re: Interstate speed improvements?
Post by Rodger on 01/28/16 at 17:58:59

Even BMWs aren't vibration free...or at least the old air-cooled models weren't. I owned 800 & 1000cc "air-heads," the 800 being a bit smoother, while the 1000 had "longer legs" (higher gearing) for higher speed cruising. Careful valve adjustments and carb balancing worked wonders.

That being said, what vibration they had was a high-amplitude/low frequency vibe as opposed to a Japanese UMJ 4-cylinder low-amplitude/high-freq "buzz." Of the two, I'll take the former.

I haven't been on a long, highway-speed cruise on the S40...still carefully breaking it in...but initial impressions tell me that it will be good for 60-65 mph cruising without undue vibration discomfort.

http://www.vintagepaperads.com/1987-Harley-Davidson-Motorcycles-Ad--Comforts-of-Home_p_73777.html

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/28/16 at 18:00:43


0B303D2A3B372C2A3139342B580 wrote:
Gearing improvements can be made by going to a 140/90-15 tire, and by adding the Kawasski Pulley Conversion.  The front pulley along works with the stock engine, and is OK with a windshield and bags being added to the bike.  The double pulley conversion is most likely a bit too high of gearing for a stock engine.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1384949185

Modifying the engine the exhaust port alone most likely doesn't do much of anything.....the biggest power improvements come from using a Stage 1 or Stage 3 cam, and switching over to a Wiseco piston that has higher compression (then the exhaust port changes help).

I have no idea about modifying the counter balance system.....it would require a thorough analysis of the engine - it is not something to be done by just winging it.  I believe that Suzuki most likely got it right as the engine is far smoother than the single cylinder bikes are without this system.

At higher engine speeds - the engine uses/loses oil, and it becomes necessary to check and add oil more frequently.

The article was just what I needed.
Not into changing cams etc... just a quick, mild upgrade.
Too bad the front pulley isn't hot swappable.
I probably would have gone with a front pulley and a larger rear tire, but don't have access to milling tools. The job doesn't seem feasible to do with a dremel, unlike the exhaust port, which seems to be an easy job.

Bigger bike is a no for me. Looked into a lot of bikes, but when I read that the exhaust port is restricted, I had hope that possibly 5hp could be gained, and paired with a larger tire and front pulley, could make interstate speeds of 85mph more enjoyable.

Title: Re: Interstate speed improvements?
Post by Yoshi on 01/28/16 at 18:23:56

I have a full chain conversion for sale, lowers rpm at higher speeds. Stock belt cover works with the chain, I just removed the loer cover.

Pm me if interested

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/28/16 at 18:44:18


0A1B0A333F313B282931335A0 wrote:
I have a full chain conversion for sale, lowers rpm at higher speeds. Stock belt cover works with the chain, I just removed the loer cover.

Pm me if interested

Any pics?
Does it need a pulley on the chain?
I saw an S40 chain mod with a roller system to tighten the chain, and wasn't too fond of it.

Title: Re: Interstate speed improvements?
Post by badwolf on 01/28/16 at 18:56:01

Seriously, You want to cruise at 85mph all day and you bought a Savage??? Your kidding right? Or do you mean 85k? Is it April 1st already?

Title: Re: Interstate speed improvements?
Post by chzeckmate on 01/28/16 at 18:59:55

5 hp is not possible without changing hard parts.  You might be able to gain 2 hp with higher flow muff/intake/jets.  When running at 80+ mph the motor sounds like it's going to fly apart but it won't.  If it bothers you, use a pair of earplugs or headphones and ride on.  The vibrations aren't bad at all IMO.

Title: Re: Interstate speed improvements?
Post by Yoshi on 01/28/16 at 19:00:44

http://i57.photobucket.com/albums/g214/VduBpl/For%20Sale/20151108_195235_zpsrroa7nqx.jpg (http://s57.photobucket.com/user/VduBpl/media/For%20Sale/20151108_195235_zpsrroa7nqx.jpg.html)


Title: Re: Interstate speed improvements?
Post by jcstokes on 01/28/16 at 19:47:17

This sort of discussion makes me wonder if Dave couldn't create a cottage industry for modified Kawasaki front pulleys, just as Verslagen did with his tensioners. I do note that the front pulley mod requires very good tooling when trimming the width down and I am willing to bet that most forum members don't have the skills, the lathe and the tooling to do it. There are times when I look for sixth gear.

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/28/16 at 19:57:41

Thanks, but I was referring to pictures how it looks on the bike.

It would be awesome if like the sprocket guys, we have pulley guys making custom pulleys.

Why aren't they made out of aluminum?
I'd suppose even an aluminum front pulley would outlast an aluminum sprocket, due to the softer material used for the belt compared to a chain drive.

Title: Re: Interstate speed improvements?
Post by Art Webb on 01/28/16 at 20:53:28


2A2333342F2B2533400 wrote:
This sort of discussion makes me wonder if Dave couldn't create a cottage industry for modified Kawasaki front pulleys, just as Verslagen did with his tensioners. I do note that the front pulley mod requires very good tooling when trimming the width down and I am willing to bet that most forum members don't have the skills, the lathe and the tooling to do it. There are times when I look for sixth gear.

exactly precisely yes
the ONLY thing that kept me from trying the Kaw pulley was the fear that I'd buy the thing, and the machinist I used would screw it up
no way I'd try to do it even if I had a lathe, which I don't, and I highly doubt more than 1% of S40 riders do, either
I'd even have been willing to buy the pulley up front so Dave wouldn't of had to be out of pocket for the part

Title: Re: Interstate speed improvements?
Post by verslagen1 on 01/28/16 at 20:54:26


456D6D446D6D080 wrote:
Why aren't they made out of aluminum?
I'd suppose even an aluminum front pulley would outlast an aluminum sprocket, due to the softer material used for the belt compared to a chain drive.

wouldn't last five minutes against the shaft splines.

Title: Re: Interstate speed improvements?
Post by badwolf on 01/28/16 at 21:29:17

If you are serious, here you go...  

http://www.ebay.com/itm/Kawasaki-EN450A-EN-450-A-454LTD-Front-Drive-Pulley-1988-/182002165636?hash=item2a602ca784:g:hSAAAOSwqrtWpXWC&vxp=mtr

 It's cheap enough, but you need someone to machine it for you, $100 at least.   ( unless you have some good dirt on them )

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/28/16 at 23:42:31


32213637282523212A75440 wrote:
[quote author=456D6D446D6D080 link=1453992075/15#18 date=1454039861]Why aren't they made out of aluminum?
I'd suppose even an aluminum front pulley would outlast an aluminum sprocket, due to the softer material used for the belt compared to a chain drive.

wouldn't last five minutes against the shaft splines.[/quote]

===========


I was thinking about that...

I hear the latest Aluminum alloys are pretty tough, like the ones used in airplanes and sprockets...
If the sprocket has 2 mounting screws, the seating might be even tougher.

How about anodized aluminum, with an outward layer of hard steel or chromium or something?

Or, how about an aluminum pulley with a patterned steel shaft inserted (pressed in hydraulically)?

Just a few examples of possible solutions..

Also I would pay up front to have mine made. If it's excellent quality, $50 is a good price. Perhaps $30 if it's being mass produced.
More profit could be made if they're sold with adapters for the Kawasaki bike as well....

Do they make a 24t, or only 25t?

Title: Re: Interstate speed improvements?
Post by Dave on 01/29/16 at 03:06:01


333A2A2D36323C2A590 wrote:
This sort of discussion makes me wonder if Dave couldn't create a cottage industry for modified Kawasaki front pulleys, just as Verslagen did with his tensioners. I do note that the front pulley mod requires very good tooling when trimming the width down and I am willing to bet that most forum members don't have the skills, the lathe and the tooling to do it. There are times when I look for sixth gear.


Well I am slowly working on it.  The Kawasaki Ninja engine I took apart has transmission shafts with the same size and spline....so I can use those shafts to make mandrels to hold the pulley for machining.  I am a lathe NOOB, and I have never been able to make nice clean cuts on the lathe.  Even when cutting soft PVC or brass it would leave a funny pattern on everything I cut.  No matter how I sharpened the cutting bits, what speed or material I was cutting....the pattern showed up.  If I changed the rpm or the cutting speed - the only thing that changed was the shape of the pattern...it looked like "Tweed" or "Herringbone"  I first thought maybe the shaft bearing where worn out - but they felt fine and new ones would be over $ 600!  I started to suspect something was wrong with the motor, as it was very loud even when disconnected from the lathe....and once you cut the power to the motor it coasted very smoothly to a stop.  I took it to a motor shop and he replaced the bearings and a few parts, and the motor was a bit less noisy and the pattern got smaller.  The motor was a Baldor - but I am sure it was not the original motor, and the Forward/Reverse switch was not the original (I suspect it was a 3 phase motor originally).  I started looking at the wiring.....I couldn't really make sense of what they did, so I used the diagram on the switch and the motor and started from scratch - and I do believe that fixed it and it finally works properly.  You can see the cuts on the left side that were made before the work on the motor....and the right side is a cut I made after changing the wiring.
http://i68.tinypic.com/2i0c3dk.jpg

I have never cut really hard metal on my lathe - and I likely will need to get some carbide cutters to make this work.  (Any lathe experts are welcome to come over and give me a lesson).

I would not plan on me getting this service up and running for a little while.


 

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/29/16 at 13:58:32

That's why I thought Aluminium was a much better choice.
Usually harder metals need higher rotation, and a slower feed, and more cooling.
A finishing touch could be done with sandpaper.

It's been over 15 years since I used cnc machinery.
$600 sounds a bit too steep for me, especially if the 25t can be bought online a lot cheaper.
I'm sure there is a way to simplify it all. The pulley itself isn't hard to make, especially not if it's steel or aluminum.

But getting the ribs for the belt and shaft in place are a lot harder to manufacture.

Title: Re: Interstate speed improvements?
Post by Dave on 01/29/16 at 14:22:11


062E2E072E2E4B0 wrote:
$600 sounds a bit too steep for me, especially if the 25t can be bought online a lot cheaper.


My $ 600 estimate is if you were to also buy the rear pulley, and modify the Kawasaki pulley to fit the Suzuki hub, and pay someone to machine your sprocket hub as well......the cost to do both pulleys.

So....what year is your bike?

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/29/16 at 14:36:50

I'm in the process of buying a 2007 s40, white.
Has 20k miles on it, but about the only thing I'll be able to afford this year  :-[

Someone mentioned something about swapping out the piston for better compression and performance. Anyone got any hard numbers on hp/torque gains, as well as cost of exchanging one?
Is it hot-swappable with the current piston, or does it go together with a cylinder as well?

Title: Re: Interstate speed improvements?
Post by Serowbot on 01/29/16 at 16:10:19

[quote author=7B53537A5353360 link=1453992075/15#26 date=1454107010]..., but about the only thing I'll be able to afford this year  :-[/quote]
How you gonna' afford the $1,000 in mods you are talkin' about?...

I say,.. just get it, and ride it...  the difference between 65mph and 75mph, is 10 or 15 minutes per fill-up...
So,.. just leave 10 minutes earlier... ;D

Title: Re: Interstate speed improvements?
Post by justin_o_guy2 on 01/29/16 at 17:06:30

Dave, I flunked machine shop, I don't know the answer, but,
Being above center or below may matter.
And relief, just under the cutting edge.
Are you using inserts or carbide on a carrier that you sharpen on a diamond encrusted wheel or just tool steel?

And, looking at that makes me think it's the cutter vibrating.

Title: Re: Interstate speed improvements?
Post by Serowbot on 01/29/16 at 17:19:54

The metal on those pulleys is HAAAAAARRRD!...

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/29/16 at 21:27:52


3026312C34212C37430 wrote:
[quote author=7B53537A5353360 link=1453992075/15#26 date=1454107010]..., but about the only thing I'll be able to afford this year  :-[/quote]
How you gonna' afford the $1,000 in mods you are talkin' about?...

I say,.. just get it, and ride it...  the difference between 65mph and 75mph, is 10 or 15 minutes per fill-up...
So,.. just leave 10 minutes earlier... ;D

I don't know where you get the $1000 estimate, but if you read my posts, you'd know I was looking for cheap and affordable mods.
Opening up the port costs me the price of a dremel set of diamond drills and discs, which is about $12, since I already own a $25 dremel.
I don't know how much a higher compression piston will cost me though, but it shouldn't be more than a hundred bucks.

Concerning the 25t pulley,
Any reason you can't start out with a pulley like this, and just machine an adapter for it?

http://www.ebay.com/itm/NEW-Hot-Bodies-Pulley-25T-108632-NIB-/290892651307?hash=item43ba8d9b2b:g:EV0AAOSwq7JULX17

Title: Re: Interstate speed improvements?
Post by verslagen1 on 01/29/16 at 22:48:40

piston set $130
http://www.ebay.com/itm/Wiseco-Piston-95-00-4597M09500-for-Suzuki-/391310634293?hash=item5b1bee6d35:g:SeMAAOSwo0JWOFxl&vxp=mtr

bore job $80
head gasket $40
more gaskets $20

performance carb kit $429
cam $299

$1000

and you'll need a new muffler $100-300
new pair of gloves to get a good grip   :o

Title: Re: Interstate speed improvements?
Post by badwolf on 01/29/16 at 23:09:01

If you think you can spend 5 minutes with a dremel tool and throw in a new piston and get a ton of extra HP, and someone will build you a custom pulley for $30, then you will run 85mph all day it' time to PUT THE X BOX DOWN AND COME BACK TO REALITY!  
Get the bike FIRST, and RIDE IT in the REAL world. Do you live somewhere there is no speed limit or other traffic? If you think you can and should ride real fast all the time, get a bike that's made to do so. You WILL be disappointed with a Savage quickly then start posting what a hunk of junk it is.
I'm not picking on you, just trying to give you some frank advise.

And add to Versy's list A TON OF LABOR! Ether all yours, or double his total to pay someone else.

Title: Re: Interstate speed improvements?
Post by MeeLee on 01/29/16 at 23:27:24


7775667866647C757D66140 wrote:
If you think you can spend 5 minutes with a dremel tool and throw in a new piston and get a ton of extra HP, and someone will build you a custom pulley for $30, then you will run 85mph all day it' time to PUT THE X BOX DOWN AND COME BACK TO REALITY!  
Get the bike FIRST, and RIDE IT in the REAL world. Do you live somewhere there is no speed limit or other traffic? If you think you can and should ride real fast all the time, get a bike that's made to do so. You WILL be disappointed with a Savage quickly then start posting what a hunk of junk it is.
I'm not picking on you, just trying to give you some frank advise.

And add to Versy's list A TON OF LABOR! Ether all yours, or double his total to pay someone else.


Exhaust port mod is only a few hours. I'd love to do, and familiar with the job.
The S40 is only a hair under what I need; and with mods can do what I want.
If you read my posts, you'll know I currently do it with a Rebel 250. It has 16BHP and 12LBFT of torque.
And it goes 85MPH on a good moment in time, 75MPH on a bad...

The Torque and HP specs show that the S40 is more than capable to ride at those speeds.
It's just the vibration that a lot of people mention, at higher speeds, that I want to do something about; which a 25t pulley does move those vibrations to a higher speed range, mostly outside of what I need.

I don't care if I don't have a lot of surpassing power.
I have absolutely none on the Rebel 250 at 80MPH.
I'm sure I have some on the S40.
And some is what I need.
If it can do 90MPH, I'm satisfied.
I'd never go beyond 90MPH.
And I never keep 90MPH either.

I doubt I will be disappointed, unless the vibrations are out of this world.
Then, AFTER buying it, I might look into a rear pulley modification, to decrease the revs even further.

33BHP is good enough to go 90MPH. With some tuning, I can see the S40 doing 95MPH with ease.

But for the low budget I have... 90MPH is good enough..

Btw, the exhaust doesn't need changing, unless you want to lower weight. It's pretty freeflow if you ask me.
If not, I'll drill out the back end.

Title: Re: Interstate speed improvements?
Post by Dave on 01/30/16 at 03:41:46


56494F4855526353635B49450E3C0 wrote:
Dave, I flunked machine shop, I don't know the answer, but,
Being above center or below may matter.
And relief, just under the cutting edge.
Are you using inserts or carbide on a carrier that you sharpen on a diamond encrusted wheel or just tool steel?

And, looking at that makes me think it's the cutter vibrating.



Nope.....it I tried all different cutter angles, speeds, etc.  And the pattern always remained even if cutting PVC pipe.  The motor must have been wired incorrectly, and it was somehow out of phase internally and vibrated way too much.  Even with the belt removed and just the motor running the handles on the lathe vibrated badly.

Now that the motor is rewired....it cuts great!

Title: Re: Interstate speed improvements?
Post by Kris01 on 01/30/16 at 07:27:11


6A42426B4242270 wrote:
Btw, the exhaust doesn't need changing, unless you want to lower weight. It's pretty freeflow if you ask me.
If not, I'll drill out the back end.


Given the sound difference between stock and a Dyna, the stock exhaust is restrictive. Drilling holes in the back of the muffler wouldn't necessarily improve it's performance.

Title: Re: Interstate speed improvements?
Post by Dave on 01/30/16 at 08:15:20

You are really to focused on the exhaust port......and perhaps on the HP and torque curves.

The ring in the exhaust port measures 34mm in diameter.  The exhaust header has a 2" diameter chrome outer pipe - but inside that there is an inner pipe that is much smaller.  That inner pipe has a bit of a cone at the cylinder end, and the cone has a crimp in it that appears like it might allow the exhaust pulses to pass between the inner/outer pipe.  That cone is only 30mm in diameter, and the inner pipe then epxands to 34mm for the entire length of the pipe.  Therefore.....the entire header is the same size as that ring you are so intent on removing.  As I have said earlier....the little ring is not going to do much of anything on a stock bike, and cruising at 80 mph is just not what the Savage is made to do,

My bike has a lot of engine improvements and makes a lot more power than a stock engine, and I have the double Kawasaki pulley change.....and I do believe my bike could cruise at 80 mph - however my Ninja 250 is completely stock and does it better.  The Ninja is supposed to be around 30 HP - but the 9,000 rpm at 80 mph works just fine on the little bike....as it is still 5,000 rpm below the redline. On the Savage you are going to be riding only about 1,000 rpm below the redline at 80 mph.

What you really need for the way you want to ride is a 400 - 500cc twin.  

Title: Re: Interstate speed improvements?
Post by justin_o_guy2 on 01/30/16 at 08:41:21

That cone was put there to block reflected pulses.

Title: Re: Interstate speed improvements?
Post by Chase on 01/30/16 at 11:04:48

I also did the 454 mod it cost me around 300 I think.

Now after this mod cruising at 65-70 you will see a decrease in rpm's which was my goal. If the speedo is correct it actually lowered my max speed in 5th gear I think to 85.

Do not know if speedo reading correct bough from the gearing change. And Dave you will need multiple carbite bits I think the guy who did mine told me he went threw 5

Title: Re: Interstate speed improvements?
Post by badwolf on 01/30/16 at 16:06:12

MeeLee, In all seriousness, where do you live that you can commute at 80-85-90mph? And what is your hang-up with the 400 pound thing? Is it a local regulation, or insurance thing where you live?  
Your goals are do-able BUT, not cheap quick, or easy. The drag racers refer to ''cubic dollars''. Speed = money period! The question is NOT ''How fast do you WANT to go?''. The question IS ''How fast can you AFFORD to go?''  
Every run down the strip in a top fueler, or funny car costs THOUSANDS!!! A top level nascar team costs about 24 MILLION a year.  
Buy your Savage if you like it, ride it, change what you can or want to as you can afford to, but there is no ''magic pill or mod'' that will turn the bike into something it was never designed to be overnight.  
 Your bike will be what we refer to as a ''ongoing project''. But don't feel alone, mine is too, along with ALOT of people here.
Good luck!

Title: Re: Interstate speed improvements?
Post by jcstokes on 01/30/16 at 16:32:47

You will have some passing power, that will decline sharply after about 60 mph, you will want to be in third before attempting passing on two lane blacktop. The stock bike will probably get to eighty seven or ninety indicated mph. I don't know how true the speedos are at that speed even with the 140/90 tyre.

Title: Re: Interstate speed improvements?
Post by pg on 01/30/16 at 17:19:20

The s40 is a fine motorcycle; although, it is not intended for the interstate.  If you want something to meet your expectations you are going to have to find something BIGGER.  

Best regards,

Title: Re: Interstate speed improvements?
Post by Paladin. on 01/30/16 at 19:20:51


796E68646B7B090 wrote:
The s40 is a fine motorcycle; although, it is not intended for the interstate.  If you want something to meet your expectations you are going to have to find something BIGGER....

Other people, other opinions.  I was looking at getting a 250 when I saw the Savage -- a 652cc single just 50 pounds heavier than the 250s.  Biggest bike I ever had.  Took it from L.A. to OKC and back. On the Interstates I did 1,070 miles in 36 hours, not an Iron Butt, but pretty good.
http://www.savageriders.com/paladin/LA-OKC/WelcomeTexas.jpg
Had a 21" suitcase, stuff in the saddlebags, tarp and bedroll.  As I said, at 65-70 mph the Savage was just fine.   For Me.  I am now camping on the Vespa, quarter size.  62 mph on the Interstates, slowing for winds and uphills, same as the Semis.

You can either upsize your bike, or you can downsize your expectations.

Title: Re: Interstate speed improvements?
Post by pg on 01/30/16 at 22:21:06


0D25250C2525400 wrote:
33BHP is good enough to go 90MPH. With some tuning, I can see the S40 doing 95MPH with ease.

But for the low budget I have... 90MPH is good enough..


:-/

Title: Re: Interstate speed improvements?
Post by Art Webb on 02/01/16 at 09:59:56

A Savage in good tune will run 90MOH bone freaking stock, mine would go 95 when I first got it
If I leaned down and put my feet on the rear pegs
as for vibration, like the Rebel it becomes a hum at the high end, not a paint shaker
It's really not that bad
But it is NEVER going to be comfortable running 85-90 all day long without significant work
if you want a lower end bike that will, get on CL and find a used Ninja 500 in good shape
My 2007 was in near factory condition due to a rider that got scared or bored quickly after buying it, cost right at $2k, (more miles would have made it cheaper, but it was literally cherry beyond needing a carb cleaning) and would run 100 MPH smooth as glass
only reason I swapped it is a case of 'old man knees'
if not for that I'd have it still

Title: Re: Interstate speed improvements?
Post by justin_o_guy2 on 02/05/16 at 20:51:20

My buddy had a Pinto wagon.
We pretty much lived in it for six weeks once.
It would run plenty good enough to get a ticket.
But, even as a youngster, I knew the thing rode like a pogo stick. Developed a Nasty habit of dying in a left turn, THAT'S Scary in traffic. But, I digress.
Point is, even if it Would've run faster, a day of that car was just brutal, and the Suzuki, dude, I Love the thing as a hop into town, run errands, go home kinda deal. I made Many trips from Longview Texas to Tyler, just to see a chiropractor. Yes, a Good chiropractor is that hard to find.. Anyway, it's not that far, but if you push it, it's a whipping. A windshield might have been a smart move,
I did get 12,000+ miles in one year.

Title: Re: Interstate speed improvements?
Post by MeeLee on 03/13/17 at 17:02:10

I ended up with a Yamaha FZ-07.
Much safer, much faster, much better MPG, much better acceleration, and at 400LBS, not that much heavier.

All in all it costed me $4.5k, vs $2,5k for an S40, but the $2k surplus is well below any modifications I'd need to do on an S40, to get it 'up to speed', if you 'get my drift'?  ;)

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