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Message started by musicdorian on 10/14/07 at 12:46:40

Title: Top speed of an unmodified S-40
Post by musicdorian on 10/14/07 at 12:46:40

Can anyone tell me the top speed of an S-40, when on a flat surface, with no wind resistance (other that what is there generated by the speed of the bike.)?

A fellow who knows quite a bit about these machines, in a mechanical capacity, told me that they top out at about 70 mph.  This sounds suspiciously like the top speed of a Honda Rebel or a machine its equivalent size.  It would seem that a 650 engine, with street gearing should be able to do somewhat above the 70 mph mark.  (PS.  I am a putt-putt rider, I have no intentions of experimenting with the maximums on my machine.)

Title: Re: Top speed of an unmodified S-40
Post by verslagen1 on 10/14/07 at 12:50:23

my '96 would do 80-85 before I did anything to it.

I was a newb at the time, so after looking down I was sitting higher.   :o

Title: Re: Top speed of an unmodified S-40
Post by justin_o_guy2 on 10/14/07 at 13:03:57

Mine hit 88 or so( indicated) stock. 70 is eaaasssyy! That guy doesnt know what hes talkin about.

Title: Re: Top speed of an unmodified S-40
Post by slavy on 10/14/07 at 14:09:13

The fellow who told You this did not know that the bike has more than 3 gears.


Title: Re: Top speed of an unmodified S-40
Post by SteveRocket on 10/14/07 at 15:37:34

I think I saw somewhere that the stated speed by Suzuki (?) is 87mph.  When I first logged on to this site there was a chart in one of the posts listing all the speeds on the bikes available. Ours was about 5th from slowest.
Steve

Title: Re: Top speed of an unmodified S-40
Post by demin on 10/14/07 at 17:26:25

I'm about 250lbs.,I have no problem hittin'70- ;D 75

Title: Re: Top speed of an unmodified S-40
Post by forrest on 10/14/07 at 17:30:41

Hit 85  for I backed her down.

Title: Re: Top speed of an unmodified S-40
Post by BEAMRUNNER on 10/14/07 at 19:46:58

I have an 07 s40 that I got up to 95. It felt like it might have a little more. I weigh around 165.

Title: Re: Top speed of an unmodified S-40
Post by Jack_650 on 10/14/07 at 20:29:06

I've run mine with my 180 lbs. and about another 100 lbs. of gear on the back seat and in bags at 85 for a few several miles once when I had to keep up with a pick-up driver on the interstate down south last year. I still had throttle left in medium hills in N. Carolina. I don't advise it as a habit, but it was really stable and there was quite a bit of gusting crosswinds. The only changes I've done in that department was:

1. I took the washer completely out of the carb when I first go it.
2. I did a by ear carb adjustment right after that 2 1/2 years ago.
3. I put a Sportster muffler on.

I know a lot of you say to re-jet and all that other stuff. My theory is that if it's running well, isn't backfiring near as much as when I got it and just keeps running up and down the road I'm going to leave it alone. Oh yeah, and I run synthetic oil when I do all these long trips down south in the summer. I suffer from the heat but the bike doesn't seem to.

Jack

Title: Re: Top speed of an unmodified S-40
Post by firsts40 on 10/14/07 at 22:52:43

I have an 06 S40 with windshield, bags and in leathers I weigh around 230.  I cruised once for around 65-70 miles at 80 with no problems, an it didn't hurt it one bit.  I do a lot of highway riding at between 65-70, and it settles down and just Thumps along with some good acceleration left.  I ride 65-70 for 150-175 miles straight with no problems at all.  I perfer to cruise between 55-65 though.

Title: Re: Top speed of an unmodified S-40
Post by skrapiron on 10/15/07 at 05:06:25

I never ceases to amaze me just how many people run the Savage down with no real knowledge of what the bike is really like.

Your mechanic friend is talking out his ehaust port.  I'll bet if you push him a little further, he'd tell you that a Savage can't make it up a steep hill without you getting off and pushing!

The stock Savage pumps out close to 33hp.  That's more than enough to get a solo rider to the speedlimit and beyond.

Like other riders have said, my '04 has no problem hitting or maintaining 70mph.  There is alot of throttle left if I need it too..

Don't let other people (who really know nothing) make up your mind for you.  If you doubt it, ask for a test ride.  When you're done, you'll likely have the same smile on your face that we do on ours..

Title: Re: Top speed of an unmodified S-40
Post by TheFid on 10/15/07 at 05:39:16

Took the bike fore a spin this morning and clocked 85 before easing off, mainly because i was in a 50MPH speed limit.

Title: Re: Top speed of an unmodified S-40
Post by T-Mack1 on 10/15/07 at 06:04:01

Mine isn't stock anymore but........This weekend I was with two neighbors (big HD's ), and they decided to pass a car on the expressway,  62 to 82 in a flash into the wind.  I didn't realize I was at that speed until I look down.    Actually felt like the bike had more to go, but I'm not too anxious to see how high it will go.  It will do the speed limit.......(+10).....   When it was stock, it did 75 with no problems.

And remind your "fellow" that HD 883's are approx. 37 hp stock and weight a bunch more.  

Also, my last bike was a '82 Honda CM250C which is the original version of the Rebel 250 / Nighthawk 250.  There is a world of difference between the Honda "Twinstar 250" engine (their name, I didn't make it up) and the Suzuki 650 thumper.  The Honda, you really really really had to know what gear you were in and with me (200 lbs) and my son (110 lbs) on it, it slowed down on hills.  Not the LS650.....

Title: Re: Top speed of an unmodified S-40
Post by klx650sm2002 on 10/15/07 at 06:45:42

The RD250LC Yam was the first 250 in uk to do 100mph, and it did this with a genuine 31bhp.

Clive W  :D

Title: Re: Top speed of an unmodified S-40
Post by mornhm on 10/15/07 at 07:13:56

My Savage was bone stock and under the conditions you describe (flat being horizontal - not going up a grade or down) with no wind. Mine would do a little over 80 with me sitting upright. Put a little headwind or even a slight grade and the speed will start dropping. There was one time trying to pass a semi trailer at 70 mph at WOT that it topped out in the wash from the truck.

Tailwind, downgrade, or leaning forward would coax out a few more mph. No problem with the MC at top speed (except I felt like I was really flogging the engine with WOT). Tracked straight and true, and just ran out of "go."

So as you can see with the other posts, ymmv.

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/15/07 at 08:12:13

I've been to an indicated 85 twice on mine...just to test.  I don't do that often, and I didn't try to go faster.

Vtail installed a digital speedo on his bike.  Nice clean job.

Anyway, he had stored his highest speed run into memory and showed it to me the other day.  With the OEM windshield installed his '07 made it to 87.7.

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/15/07 at 09:37:01

Update: just the other night going home before my freeway exit (on the flat, no wind temp 55 degrees, my weight 185 lbs dressed) opened her up sitting upright behind OEM fairing got up to 95 indicated. When I got home my Sigma (very,very accurate) indicated 89.97 max/mph so the speedo gets a little optimistic at those speeds. I feel it still would have gone a little faster but I had to get off the exit. Mine pulls strong till 85 indicated. Granted, I have a MAC,1/2 spacer,152.5 main and K&N drop-in filter. But there are a lot of variables to consider. Altitude( I'm at 300 feet),temperature (the cooler the more HP) wind,rider weight and profile,tire pressure etc,etc. Stock mine pooped out at about 87 indicated under same conditions. :)

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/15/07 at 11:18:09

I was turning 6200 rpm on my ENM digital tach. Also the Mean Piston Speed gets up there at 3824 ft/min. At this rpm the torque has dropped substantial. I would have to drop the gearing to get to or maybe a little over the ton, like maybe 17/45 which means chainconversion.
  Mean Piston Speed    
 ------------------     ------
 Under 3,500 ft/min     Good reliability
 3,500-4,000 ft/min     Stressful, needs good design
 Over  4,000 ft/min     Very short life
 
5600 rpm= 3454 ft/min=81 mph true groundspeed. On most bikes that's about 85 indicated on the optomistic speedo. So a stock bike will be hard to get into the stressful area unless you run it off a cliff (Very Stressfull)
;D

Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 10/15/07 at 17:07:38

Alrighty, I'll let everyone call BS, but I JUST DID THIS Sunday...  My Savage has an open shotgun pipe, a 162 main, and stocker pilot.  It also has a 17/43 chain conversion.  On US 70, on the flats, Me (220 lbs.) and passenger (140 lbs.)  hit 1oo mph as indicated by my Savage speedo.  I dunno if that's accurate that high, but it tipped over to three digits.

Title: Re: Top speed of an unmodified S-40
Post by bill67 on 10/15/07 at 17:14:51

your passenger is crazy

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/15/07 at 17:32:27


govmule84 wrote:
Alrighty, I'll let everyone call BS, but I JUST DID THIS Sunday...  My Savage has an open shotgun pipe, a 162 main, and stocker pilot.  It also has a 17/43 chain conversion.  On US 70, on the flats, Me (220 lbs.) and passenger (140 lbs.)  hit 1oo mph as indicated by my Savage speedo.  I dunno if that's accurate that high, but it tipped over to three digits.


Lord 'O Mighty,What you been drinking? I want some 'O That

Title: Re: Top speed of an unmodified S-40
Post by Rogue_Cheddar on 10/15/07 at 17:43:05

I took nice ride today and hit some highway on the way. Hit 75 easy and that's with a big Slipstreamer shield and bags. Stock carb and exhaust. 85+ is not out of the question. I just don't like how my hands and feet feel like I've been hit with a taser.  :D

Title: Re: Top speed of an unmodified S-40
Post by drharveys on 10/16/07 at 03:10:52


govmule84 wrote:
Alrighty, I'll let everyone call BS, but I JUST DID THIS Sunday...  My Savage has an open shotgun pipe, a 162 main, and stocker pilot.  It also has a 17/43 chain conversion.  On US 70, on the flats, Me (220 lbs.) and passenger (140 lbs.)  hit 1oo mph as indicated by my Savage speedo.  I dunno if that's accurate that high, but it tipped over to three digits.


Now you know why I buy my bikes new -- the previous owner may have ridden like you!

;D ;D

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/16/07 at 08:15:27


vtail wrote:


Lord 'O Mighty,What you been drinking? I want some 'O That

Don't know what he was drinking but from the size of that main jet, I'd say that his bike was definitely a bit over served :P

Title: Re: Top speed of an unmodified S-40
Post by Beatduck on 10/16/07 at 12:02:15

I'm in Florida, so, no problem finding flat roads here.
2005 S-40
160 lbs.
90 mph.
Likes good food, long walks on the beach, etc.


80-90 is a chore though.

Title: Re: Top speed of an unmodified S-40
Post by skrapiron on 10/16/07 at 12:17:55

I took mine for a spin this afternoon and just for giggles, pegged the throttle.

I got my mild-modded Savage up to 85 (indicated) before I chickened out and backed off...

5-11
210lbs
factory windscreen
spacer mod, 152.5 main, 55 pilot, EMGO pod filter.

Title: Re: Top speed of an unmodified S-40
Post by Dynobob on 10/16/07 at 14:45:05


klx650sm2002 wrote:
The RD250LC Yam was the first 250 in uk to do 100mph, and it did this with a genuine 31bhp.

The Suzuki T250 built from 1967-1972 would do the ton. It had 33 hp and a six speed transmission. I guess they imported them into the UK. Not bad for a 250 ;D

Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 10/16/07 at 14:50:21

Not drinking anything....the Savage is one of the smaller bikes I've owned... a hundred miles an hour isn't terrible.  It's fast, and dangerous, but compared to sporbikes speeds, that's a grandma stroll.  And it's a used bike, yes, but not abused... You never open your bike a little?

As far as over-jetted, I appreciate the concern for the size, but it seems to run peachy...I kept going up until it decided to run well, and I'd say that it performs nicely.  The exhaust I built for it is a piece of 1 1/2 inch pipe, straight through, and I have an open carb, no air filter.  I suspect it may need a bit more fuel than a jardine and paper filter.  I need a to get a bigger pilot, but I've been busy :-).

Not really bragging, per se, just trying to explain that bikes will do whatever you build them to.  80-85 sounded like a good starting point to me :-)

Ride Safe...
Liam

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/16/07 at 19:18:03

Liam we're just poking fun at you and I strongly believe that with that 17/43 gearing, the ton is do-able cause with that (gearing) you're in a better part of the torque curve. We just have a hard time with the fact that you had a passenger on it. ;) ;D


Title: Re: Top speed of an unmodified S-40
Post by spike on 10/18/07 at 05:16:40

I've hit 90 a few times, usally 85 pretty easy sitting up. It is as it come from the fac except for the gas, oil and a backrest. 06 w/65oomi on it. With the right mods I think it is possible to get more. I don't have the money or knowlege to do any. 8)

Title: Re: Top speed of an unmodified S-40
Post by LANCER on 10/18/07 at 08:57:25


Quote:
The exhaust I built for it is a piece of 1 1/2 inch pipe, straight through, and I have an open carb, no air filter.  I suspect it may need a bit more fuel than a jardine and paper filter.  
Liam



AH-HA !!  An open pipe with open carb ... your one of THOSE kind aren't you ?   :o   ;)   ;D

SHHH ... there are other lurking around here too.

Title: Re: Top speed of an unmodified S-40
Post by SteveRocket on 10/18/07 at 09:21:12

With the mods listed below I did an Indicated 93mph with a little bit left on the throttle. With the header leaking slightly is does 88mph on the speedo. I weigh 200ld in street clothes so with riding gear on about 220ld. I have national Cycle Windcreen too.
Steve

Title: Re: Top speed of an unmodified S-40
Post by NW-SAV on 10/18/07 at 14:02:01

I'm 6'2" - 215, Portland, OR - mine did right about 85 stock, but getting from 75 to 85 takes a long time

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/18/07 at 14:54:49

Mine pulls strong till 85 indicated. Topped out at 95 indicated. Granted, I have a MAC,1/2 spacer,152.5 main and K&N drop-in filter. But there are a lot of variables to consider. Altitude( I'm at 300 feet),temperature (the cooler the more HP) wind,rider weight and profile,tire pressure etc,etc. Stock mine pooped out at about 87 indicated under same conditions.  Also in PDX. NW-SAV is your's also white? Bought in Orgon City? Cause I looked at that one to buy. Sold before I got back. So I bought a white one from Hillsboro. ;D




Title: Re: Top speed of an unmodified S-40
Post by Brewbrother on 10/18/07 at 14:55:11

I took my 2001, unmodified, out on I-10 in the predawn hours. I think it was late march or early april. I wound out every gear, hugging the tank, after riding about 30 miles going downhill with the wind at my back I got to the mid 90's.  :o

Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 10/18/07 at 17:12:58

Yeah, I'm not gonna apologize.  I'm a young dude, but an old-school hot-rodder, an ASE-certified mechanic, and a little reckless.  Ride it like you stole it, or leave the thing in the garage.  You'll know it's me coming 'cause you'll hear me from a mile away, and I'll be passing you with a big grin on me face :-)

Title: Re: Top speed of an unmodified S-40
Post by vtail on 10/18/07 at 17:38:38

Hey Have at it ;D ;) By the way; If you stole it and want to keep it, better blend in with the crowd ;D :D

Title: Re: Top speed of an unmodified S-40
Post by skrapiron on 10/18/07 at 17:39:02


govmule84 wrote:
Yeah, I'm not gonna apologize.  I'm a young dude, but an old-school hot-rodder, an ASE-certified mechanic, and a little reckless.  Ride it like you stole it, or leave the thing in the garage.  You'll know it's me coming 'cause you'll hear me from a mile away, and I'll be passing you with a big grin on me face :-)


And a few miles up the road, I'll pass the squishy streak on the pavement that once was you.....

Sorry,  I couldn't resist.. ;)

Title: Re: Top speed of an unmodified S-40
Post by Bear_Rider on 10/19/07 at 12:16:28

A little different twist on the question:

If you find yourself stuck behind someone going 63 mph on a flat section of  two lane country road, how much difficulty would you have passing him?


Title: Re: Top speed of an unmodified S-40
Post by bill67 on 10/19/07 at 12:26:50

Buzz right pass him

Title: Re: Top speed of an unmodified S-40
Post by mark_k on 10/19/07 at 12:36:33


Quote:
If you find yourself stuck behind someone going 63 mph on a flat section of  two lane country road, how much difficulty would you have passing him?


Bear Rider - A stock savage runs about 15 mph per 1000 rpm. 60 mph will be about 3950 - 4000 rpm.  Given this rule of thumb, 75 will be about 5000 rpm and should be nearing the top of the capacity, but definitely not a ceiling. Just look at Lancer's modified numbers.

My stock '02 topped out at about 83 with windscreen and 220 lb rider, before jetting the carb. With stock exhaust and carb jetting now tops at 89 and runs much more smoothly.

The motor has lots of torque in the 3000 to 4500 rpm range, so it has a good kick with a throttle twist and accelerates quickly. It will get around that 63 mph cager with room to spare.

My $ 0.02

Title: Re: Top speed of an unmodified S-40
Post by Bear_Rider on 10/19/07 at 14:55:38

Thanks.

My current road bike, a 250 Rebel is much like the original volkswagen. It will go down the highway at 70, but you best not try to pass anything going faster than 55, lest you end up as an embossed decoration on a semi's bumper.  :o

Title: Re: Top speed of an unmodified S-40[IMG]http://i21
Post by Savage_Greg on 10/20/07 at 08:45:22


govmule84 wrote:
Alrighty, I'll let everyone call BS, but I JUST DID THIS Sunday...  My Savage has an open shotgun pipe, a 162 main, and stocker pilot.  It also has a 17/43 chain conversion.  On US 70, on the flats, Me (220 lbs.) and passenger (140 lbs.)  hit 1oo mph as indicated by my Savage speedo.  I dunno if that's accurate that high, but it tipped over to three digits.


Just for the sake of discussion, a K&N pod is as good as an open carb.  I'm just not sucking in June bugs.  The Raask exhaust is an 1 1/2" straight through.  Only difference is a little packing for sound.  It's a shot gun with a silencer :P

My exhaust port has also been opened up 2.5 MM...

...I recently tried a 157.5 and got small amounts of black smoke and soot, plus the plug was blackened.  So I changed it back to a 155.  The 162 is 3 sizes above that and I was just suggesting that if you aren't running clean then you are just wasting gas.

K&N pod...
http://i21.photobucket.com/albums/b277/gmdinusa/KN_Filters_3.jpg

Stock exhaust port...
http://i21.photobucket.com/albums/b277/gmdinusa/Exhaust_Port_1.jpg

My exhaust port...
http://i21.photobucket.com/albums/b277/gmdinusa/Head_Rework_2.jpg

My exhaust pipe...
http://i21.photobucket.com/albums/b277/gmdinusa/ExhaustHeaders_2750.jpg

I also forgot to mention that I'm running this little cutie that I got from Lancer...
http://i21.photobucket.com/albums/b277/gmdinusa/Cam_Performance_1.jpg

I just haven't (and probably won't) try to find the top speed with my 45/17 chain conversion either.  I don't want to look like I stole it ;D

Title: Re: Top speed of an unmodified S-40
Post by LANCER on 10/21/07 at 23:56:49

Dude, nice polish on the port there !   ;)

http://i21.photobucket.com/albums/b277/gmdinusa/Head_Rework_2.jpg



Title: Re: Top speed of an unmodified S-40
Post by klx650sm2002 on 10/22/07 at 02:55:14

It's nice to look down a port and see the valves or it would be if they were there.

Clive W  :D

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/22/07 at 07:15:45


LANCER wrote:
Dude, nice polish on the port there !   ;)


Yeah, it looks like it's gonna be a slow week, so I'm gonna start grinding on Reelthing's head soon, too.

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/22/07 at 07:17:02


klx650sm2002 wrote:
It's nice to look down a port and see the valves or it would be if they were there.

Clive W  :D


Yeah, and don't forget that you get part of the blame for that.  It just took me 2 1/2 years to get around to it :P


Title: Re: Top speed of an unmodified S-40
Post by Reelthing on 10/22/07 at 07:46:58


Savage_Greg wrote:

Yeah, it looks like it's gonna be a slow week, so I'm gonna start grinding on Reelthing's head soon, too.

yepeeeeee!

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/22/07 at 09:58:55


Reelthing wrote:

yepeeeeee!

Yep!...(here we go again)...Reelthing gets a head job ;D

Title: Re: Top speed of an unmodified S-40
Post by LANCER on 10/22/07 at 11:04:38


Savage_Greg wrote:

Yep!...(here we go again)...Reelthing gets a head job ;D



O .. K     ::)

Title: Re: Top speed of an unmodified S-40
Post by serowbot on 10/22/07 at 15:04:44

"And what would be the airspeed velocity of an unladen swallow?"
"What do you mean, an African or European swallow?"

Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 10/22/07 at 17:08:22

Hi y'all....

Greg, I don't think I'm wasting gas...It was belching black smoke when my petcock sprang its inevitable leak, so I think I know what it doesn't like :-)

I kept going up in size, and it doesn't smoke or bog...frankly, I think it would gladly take another, but no flat spots in the throttle and no smoke left me a purdy happy camper.  I figure I'll let it be for now.  The pilot, now that's another story.  

As far as the squishy road mark... look, I'm not trying to ruffle anyone's feathers here.  You guys ride yours how you like, and I'll do the same on mine.  I obey the law most of the time, but out here in the good ol' Midwest, we got miles and miles of lonely blacktop.  As far as the squishy streak thing...yeah, I recognize that's a possibility every time I thumb the starter button.  It's a calculated risk I take.  However... I'm sure you guys have all heard the same thing from a friend or relative.  Don't ride above your ability, don't show off if you don't feel comfortable, and above all, have fun riding.  Sorry to hijack this thread...Like I said...I don't know how accurate that speedo is.  I just opened it up for a few minutes 'cause the service manual said that's okay.

Ride safe!
-L.

Title: Re: Top speed of an unmodified S-40
Post by feelinjunky on 10/23/07 at 19:18:30

It says in the manual a savage should be able to do 100mph in 5th at 6500 rpm. NOT JOKING.

Title: Re: Top speed of an unmodified S-40
Post by bill67 on 10/23/07 at 19:37:41

It will do 100 mph if you can get it up to 6500 rpm in 5th

Title: Re: Top speed of an unmodified S-40
Post by LANCER on 10/23/07 at 19:37:57


feelinjunky wrote:
It says in the manual a savage should be able to do 100mph in 5th at 6500 rpm. NOT JOKING.



Yep, it does.

Title: Re: Top speed of an unmodified S-40
Post by TVR on 10/24/07 at 19:00:40


Savage_Greg wrote:

Yep!...(here we go again)...Reelthing gets a head job ;D

Slow week? You should stay busy....Reelthing squeeling isn't attractive....

My '01 ran low 90's indicated....But she's now in my brother's garage..

Title: Re: Top speed of an unmodified S-40
Post by ErminM on 10/27/07 at 10:38:05

150 kmh which comes to 93 mph.
and I have big windshield

Usually I ride between 120kmh and 130kmh
it is all on highway and I want to stay away from semis.
It is flat and I am 90kg...

Title: Re: Top speed of an unmodified S-40
Post by Savage_Greg on 10/27/07 at 11:10:15


govmule84 wrote:
Hi y'all....

Greg, I don't think I'm wasting gas...It was belching black smoke when my petcock sprang its inevitable leak, so I think I know what it doesn't like :-)


Ride safe!
-L.

And your plug is nice and tan colored?

Is your brake arm blackened?

Whatever works, but you happen to be the only one I've heard of using a main jet that large.

Title: Re: Top speed of an unmodified S-40
Post by vtail on 11/03/07 at 11:57:27

http://w3.bikepics.com/pics/2007/11/03/bikepics-1076610-800.jpg
Took the spacer out all together,(152.5 main,Mac exhaust, factory windscreen) This was on the flat, sitting upright, temperature 49 degrees. 6460rpm on ENM tach. Man this thing screames, pulls like a freighttrain till 90 indicated (on speedo) Popping is now rare and gone altogether between shifts. (used to pop all the time). Exhaust runs so clean, that when i put my fingers in, they stay clean. Never ran this strong and I think it'll pull past redline if I tucked in. The indicated speed on speedo was 98 (so slightly optomistic) Love it! With lower gearing (chain) I am sure it'll do or go past the Ton on the Sigma ;D ;D ;D

Title: Re: Top speed of an unmodified S-40
Post by Hell, Billy on 11/03/07 at 14:07:30

Vtail, just for my curiousity, what kind of miles per gallon are you getting w/ that set up?

My mean altitude is very close to yours.......I am thinking of loosing the white spacer all together.

Thanks,

Bill

Title: Re: Top speed of an unmodified S-40
Post by vtail on 11/03/07 at 14:44:37

Hell Billy; Don't know yet since I just did remove the 1/2 spacer last Thursday night, then filled the tank and only got 62 miles so far. Hell I don't even care since it runs so sweet. Before this last change I got around 50-52 mpg but I drive fairly aggressive. Went for a ride with some Harley buddies and got 62. But these Guys drove fairly sedate. Even if I got 40 mpg, I'm having fun. But I'll let you know. Cause these flat out speed runs don't help the gas mileage. ;D ;D

Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 11/05/07 at 00:43:43

My plug's grayer than tan, but a little extra fuel, to my knowledge, is better than being a little short on fuel.  When it was spitting out tan plugs, it was bogging in the throttle...and this is probably caused by my straight pipe...it's not some engineered-for-torque masterpiece that cost me two hundred bucks.  I welded a piece of scrap exhaust pipe from a car on there, welded on a bracket with two bolts to mount 'er up, and flat-blacked it in header paint.  It turns out, so I would have no way of knowing if anything is blackening, but I suspect if I stuck my finger up there, it'd come out pretty sooty.

I'm not knocking your way...your way is definitely right...get a proper exhaust and filter, jet it correctly after a few runs.  I'm with you.  My gas mileage hasn't changed since the re-jetting, so it can't be that awful, I guess.  

I'm just a good ol' boy, doing things the good ol' boy way.  If this was a beautiful Ducati or a forty-something Panhead, sure, I'd take some time and spend some money.  But the reality is that I drive a chopped up pile of ratrod, and it does just fine.

And the ten inch blue flame that roars out of that sucker at night between shifts is pretty badass lookin'.

I gotta lighten up my air cut valve spring...55 pilot didn't help jack.

Title: Re: Top speed of an unmodified S-40
Post by LANCER on 11/05/07 at 02:20:02

A straight open drag pipe makes it difficult to get a carb to act right in most cases.

Title: Re: Top speed of an unmodified S-40
Post by vtail on 11/05/07 at 16:15:39


Hell, Billy wrote:
Vtail, just for my curiousity, what kind of miles per gallon are you getting w/ that set up?

Well 1st tank driven very aggressive incl top-end run 46mpg. I'll try to drive more sane on my second tank but that'll be hard to do. ;D


Title: Re: Top speed of an unmodified S-40
Post by govmule84 on 11/06/07 at 19:29:48

Yep.  But the price was right, and you hear me comin' :-)

Title: Re: Top speed of an unmodified S-40
Post by cookiemonster on 11/08/07 at 18:40:28

Stock 2000 Savage...except air filter.  85 on the flat. Still got a lil throttle but sounds like (and feels like) she has had enough........  I wanna push her a bit more but i like to ride more than i like to mechanic.

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