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Message started by spacepirates on 07/13/12 at 08:19:47

Title: 80mph top speed?
Post by spacepirates on 07/13/12 at 08:19:47

2002 Savage, 22k miles, Mikuni VM38 carb with a cone filter and a jardine exhaust....

My savage is my around-town vehicle, so I don't often get a chance to really open her up, but I've been doing a short commute on the highway and noticed that WOT only gets me about 80mph on a level road, even if I'm at WOT for quite some time.

There is no power boost going from 3/4 to WOT, and no surge closing the throttle from WOT to 3/4, so I don't think the jetting is off (no hesitation or noticeable "bogging", I just don't get any more power). though admittedly I decide about every other day the jetting needs changed... plug looks alright, maybe a bit on the lean side, but not too bad.

Any ideas what would cause this? Low compression? Last year I had some issues with my fuel mileage being shot so I went to a mikuni vm carb (more tunable than stock) and tore down the top end to replace gaskets and what not; my head gasket was burnt through but I *thought* that was fixed....

also, I ain't light, but I'm not 700lbs either, nor do I wear a parachute when I ride, so I feel like at least 90 should be where I top out, not 80.

I've also heard of people popping wheelies on their savage's, which blows my mind. Maybe there is a technique to it, but the only time I've popped a wheelie was when I was trying to race a bus (he had a head start) and nailed a nasty pothole,  ;)

Title: Re: 80mph top speed?
Post by spacepirates on 07/13/12 at 08:21:39

p.s. my bike still has a good amount of low-end. Enough to toast a harley from stand-still last night. up to ~75mph over a bridge, that is. after that, he (finally) caught up and beat me.

Title: Re: 80mph top speed?
Post by Charon on 07/13/12 at 08:29:38

Every published magazine review I have read on the Savage, or the later S40, has reported a top speed about 85 mph. Your bike is ten years old with 22K miles on it. I'm not surprised to see its top speed a little down.

The Savage, in stock form, is a nearly-400 lb motorcycle, with about a 25 hp engine and standard poor aerodynamics. Whatever we might like to think, it is NOT a fast motorcycle. It is reasonably quick (not the same thing as fast) and agile. Changing the air filter is unlikely to make any difference. Changing the exhaust, unless carefully done, is more likely to hurt performance than help it. Remember "loud" is not the same thing as "more powerful."

I suppose that'll ruffle a few feathers. Bring on the counterarguments.

Title: Re: 80mph top speed?
Post by spacepirates on 07/13/12 at 08:40:22


406B62716C6D030 wrote:
Every published magazine review I have read on the Savage, or the later S40, has reported a top speed about 85 mph. Your bike is ten years old with 22K miles on it. I'm not surprised to see its top speed a little down.

The Savage, in stock form, is a nearly-400 lb motorcycle, with about a 25 hp engine and standard poor aerodynamics. Whatever we might like to think, it is NOT a fast motorcycle. It is reasonably quick (not the same thing as fast) and agile. Changing the air filter is unlikely to make any difference. Changing the exhaust, unless carefully done, is more likely to hurt performance than help it. Remember "loud" is not the same thing as "more powerful."

I suppose that'll ruffle a few feathers. Bring on the counterarguments.



I'll agree with just about everything you said here, though the engine output is closer to 31 than 25hp.

For some reason I was under the impression stock top speed was around 95, but looking around it does seem to be closer to the 85-90 range.

And yeah, the savage at 70+ doesn't exactly feel stable. still fun though, in a holy-crap-i'm-going-to-die kind of way  ;D

Title: Re: 80mph top speed?
Post by verslagen1 on 07/13/12 at 09:23:21

No way is a 22k savage tired.
with a cone and jardine top end shouldn't be down to 80
you're not getting any response from 3/4 to WFO?
Doesn't that mean next larger jet?

Title: Re: 80mph top speed?
Post by thumperclone on 07/13/12 at 10:05:16

ive had my 06 past 85 indicated
too fast for me bike is too light

Title: Re: 80mph top speed?
Post by SuperSavage on 07/13/12 at 10:13:13


6A766B736E7B6C7D7271707B1E0 wrote:
ive had my 06 past 85 indicated
too fast for me bike is too light


Same here, my '05 had more left at 85 mph but I didn't. Too light and springy at that speed. (I'm 6'1" 200 lbs.) Properly tuned, I see no reason why it can't do 95-100.

Title: Re: 80mph top speed?
Post by ralfyguy on 07/13/12 at 11:05:33

Mine goes to about 85 effortless, then to 90 a smidge slower and to 95 with a little more flat road. Motor is stock as is the air filter, but air box is opened and a self drilled 54 pilot and 150 main jet. Stock exhaust debaffled.

Title: Re: 80mph top speed?
Post by spacepirates on 07/13/12 at 11:31:35

I ran out of bigger main jets to try, ordered some more, bigger jets.

Hopefully one of them does the trick.

Carb tuning is confusing. I don't get it, then I read about it, then I think I get it, then I read more, then I don't get it, then I ride and I realize nothing I read applies to how the bike feels when I ride, so it just turns into a guessing game. Close enough, anyways.

I also ordered a UFO for the carb, so hopefully that helps.

I was just under the impression that even a poorly tuned carb can reach max top speed as long as the engine doesn't cut out/bog/hesitate/die etc. and I wouldn't go so far as to say mine legitimately bogs down, it just doesn't accelerate anymore. Almost no speed change from 3/4 to WOT.


Title: Re: 80mph top speed?
Post by verslagen1 on 07/13/12 at 11:36:59

Stock was a long time ago.

Currently supertrapp, stage 1 cam, rejetted, stock air, 130/90-16...
...she goes 85 or so uphill.  This hill is steep enough to make anyone behind a loaded trash truck want to shoot themselves.

Title: Re: 80mph top speed?
Post by spacepirates on 07/13/12 at 11:41:23


382B3C3D222F292B207F4E0 wrote:
Stock was a long time ago.

Currently supertrapp, stage 1 cam, rejetted, stock air, 130/90-16...
...she goes 85 or so uphill.  This hill is steep enough to make anyone behind a loaded trash truck want to shoot themselves.


This is probably my favorite description of a hill I've heard yet. Describes it perfectly  ;D

Stage 1 cam will happen eventually. I'm waiting to need to 1) have another bike reliable and 2) for this cylinder/rings/piston to need replacing at which point the savage will get over-bored, carbide treatment, and stage 1 cam (wallet permitting).

Right now... Gotta keep one bike stable to get to work. Wouldn't want to have to drive a car, now would we  ;)

Title: Re: 80mph top speed?
Post by splash07 on 07/13/12 at 12:49:07

speaking to the wheelie comment, I was able to pop wheelies OK on my stock bike, now that its heavily modified though, I can ride a wheelie for a good distance. Seemed to work best with the drag style bars.

Title: Re: 80mph top speed?
Post by bikertrash on 07/13/12 at 19:48:36

I had my ryca up to 97 indicated earlier this week.  I only weigh 145, so that helps.  I would like to do the ton on this thing at some point . . .

Title: Re: 80mph top speed?
Post by Serowbot on 07/13/12 at 19:55:05


23282A24333533203229410 wrote:
I had my ryca up to 97 indicated earlier this week.  I only weigh 145, so that helps.  I would like to do the ton on this thing at some point . . .

Close yer' mouth... catches a lot of wind... ;D...
http://www.dirtybutton.com/media/db2612-motorcycle-wind.jpg

Title: Re: 80mph top speed?
Post by spacepirates on 07/14/12 at 08:02:12

So if it looks like my bike is ~15mph slower than most peoples, what do you think causes the difference?

I weight in around 195lbs, which seems in the reasonable range for getting to 90-95mph.

I haven't done a compression test since last year when the head/jug gaskets were replaced and that came back within the acceptable range. Not really sure I trust my compression tester anymore though....

Title: Re: 80mph top speed?
Post by verslagen1 on 07/14/12 at 09:07:47

I'm 240#, if I change to a performance carb, I've done 95 up this hill.
and that wasn't topped out.

Title: Re: 80mph top speed?
Post by Serowbot on 07/14/12 at 09:14:36

Weight, affects acceleration more than top speed...  You size may cause more wind resistance... and that will limit top speed...
It will take you longer to get up to top speed...

Do you really want to go 95mph?...
Tickets are pricey up there... the ride is unpleasant... the bike will gobble oil... and crashes are more painful..

Find a really long, deserted road... tuck-in like paint, and WFO the throttle...
Then, don't ever do it again... ;D...

I tried for top speed just once, over 5 years ago... just to see...
I got to 94mph... (for about 10 seconds, then ran out of road)...
(tucked, one hand on the bars, chin on the tank,)
I'm a fairly skinny 140lbs...
I haven't seen 80mph since... 99% under 65mph...

80mph is plenty...

Title: Re: 80mph top speed?
Post by ralfyguy on 07/14/12 at 11:44:38

I weigh 205# and with the 100# wife on the back I still get over 90. It doesn't accelerate as hard anymore, but still gets to about the same top speed. I say try a different compression gauge.

Title: Re: 80mph top speed?
Post by WD on 07/14/12 at 12:50:09

They'll break the ton. Occasionally. IF everything is perfect (temp, humidity, fuel quality, etc). Years ago I stripped mine down as light as it could get, tucked as tight as I could and broke the ton by a good bit. Knowing it was going to screw up the engine, this things barely a cruiser, not even remotely a sport bike.

With the way it is set up now, my bike tops out around 75mph. But it's also all day comfortable now. If I could chase down all the electrical gremlins from years of flogging it, it would probably be a nice bike again.

Get another toy handy before you go balls out on it... it's likely to become a fancy mailbox stand.

Title: Re: 80mph top speed?
Post by ZAR on 07/14/12 at 15:53:58

A couple of weeks after I got my '95(which had only 8300+ miles on it)I was heading in to work on I-71. I got behind a line of 18 wheelers starting up a fair grade. By the time we 1/3 the way up we were down to60mph and I'm like "screw this". I eased out and rolled the throttle on without downshifting out of 5th. Hit the top,eased back in the right lane and glanced at the clock. It was showing 92mph. That's also with a Memphis Shades windshield and saddlebags and I weigh 160#.

Oh! And I still had throttle left to twist!

Title: Re: 80mph top speed?
Post by Mario Verasso on 07/18/12 at 17:36:47

I have had mine at 119 according to the other guy's speedos. But since I have done the re-jetting in Miami Fl.,I can only get 98 now. My bike is lighted up as much as I can, keep in mind i'm looking between the risers & tucked in to the bike.

Title: Re: 80mph top speed?
Post by ralfyguy on 07/18/12 at 17:43:44


34382B30362F3C2B382A2A36590 wrote:
I have had mine at 119 according to the other guy's speedos. But since I have done the re-jetting in Miami Fl.,I can only get 98 now. My bike is lighted up as much as I can, keep in mind i'm looking between the risers & tucked in to the bike.


Dang! What would the rpm be at that speed?

Title: Re: 80mph top speed?
Post by Mario Verasso on 07/18/12 at 18:04:13

I think the spec is 6,500 at 135mph. I saw a chart somewhere on here.

Title: Re: 80mph top speed?
Post by bill67 on 07/18/12 at 18:30:54


717D6E75736A796E7D6F6F731C0 wrote:
I have had mine at 119 according to the other guy's speedos. But since I have done the re-jetting in Miami Fl.,I can only get 98 now. My bike is lighted up as much as I can, keep in mind i'm looking between the risers & tucked in to the bike.

Did you save your old jets

Title: Re: 80mph top speed?
Post by Serowbot on 07/18/12 at 18:56:22


7A76657E7861726576646478170 wrote:
I think the spec is 6,500 at 135mph. I saw a chart somewhere on here.

Redline stock is 6500rpm...@97.3mph...

Your friends speedo is way,way off...
119mph would be nearly 8k rpm...
135mph close to 10k rpm...
It ain't gonna' happen...
You're on a thumper, dude...

My Ninja 500 topped at about 120mph @11.5k...
135mph is 600 crotch rocket speed...

Only way a Savage will ever see those speeds is if you drop it out of a plane... ;D...

Title: Re: 80mph top speed?
Post by ralfyguy on 07/18/12 at 21:45:52


7C6A7D60786D607B0F0 wrote:
[quote author=7A76657E7861726576646478170 link=1342192787/15#22 date=1342659853]I think the spec is 6,500 at 135mph. I saw a chart somewhere on here.

Redline stock is 6500rpm...@97.3mph...

Your friends speedo is way,way off...
119mph would be nearly 8k rpm...
135mph close to 10k rpm...
It ain't gonna' happen...
You're on a thumper, dude...

My Ninja 500 topped at about 120mph @11.5k...
135mph is 600 crotch rocket speed...

Only way a Savage will ever see those speeds is if you drop it out of a plane... ;D...[/quote]

That's what I thought...

Title: Re: 80mph top speed?
Post by Arnold on 07/19/12 at 09:11:48

Why people want to go that fast on a little thumper anyway? Plenty of rice burners out there just waiting to get you pulled over.

Title: Re: 80mph top speed?
Post by spacepirates on 07/19/12 at 09:32:47


7F6A7172727B6A7B6C1E0 wrote:
Why people want to go that fast on a little thumper anyway? Plenty of rice burners out there just waiting to get you pulled over.


I just want to go fast enough. For me, that means being able to comfortably pass someone on the highway instead of hanging along side them in their blind spot for a minute while I try and pass.

That, and I want to get as much out of the bike as I can. Do I normally need 90mph? no, but I also don't need 60mph most days, however I think both you and I would be pissed if our bikes suddenly couldn't do 60.

Title: Re: 80mph top speed?
Post by ralfyguy on 07/19/12 at 11:07:39

Same with me. Don't need 90+ often, but I like to know that I can!  ;D

Title: Re: 80mph top speed?
Post by Arnold on 07/19/12 at 11:26:20

Yea, I take the highway, do about 60mph but every once in a while if I get annoyed I punch it to 70

Title: Re: 80mph top speed?
Post by WD on 07/19/12 at 16:31:14

As far as getting the front wheel to lift off the ground... set the belt too tight (like dealership mechanics do) give it some gas and pop the clutch. It will come up, but you won't like when it comes back down...

I blew the fork seals on mine in the dealership lot the day I bought the bike. They can't take it, if you think you'll be lifting the front end get better fork seals. I've still not changed mine, from 1998 to 2008 it might have leaked a 1/4 cup from both forks combined. Refilled with Type F ATF, leak slowed down even more.

650cc used to be considered a BIG bike...

Title: Re: 80mph top speed?
Post by spacepirates on 07/20/12 at 05:44:22


697A3E0 wrote:
As far as getting the front wheel to lift off the ground... set the belt too tight (like dealership mechanics do) give it some gas and pop the clutch. It will come up, but you won't like when it comes back down...

I blew the fork seals on mine in the dealership lot the day I bought the bike. They can't take it, if you think you'll be lifting the front end get better fork seals. I've still not changed mine, from 1998 to 2008 it might have leaked a 1/4 cup from both forks combined. Refilled with Type F ATF, leak slowed down even more.

650cc used to be considered a BIG bike...



Can't say I want to do this often, I know our forks aren't built for it. I was more interested in it as a performance metric rather than amusement factor.

Maybe A fork upgrade is in my Savage's future. Its very, very distant future.

I'll see if I can't borrow someone's compression tester and try that on the bike. I can't decide if I want the compression to come back good (and still wonder why I can't reach 85) or for the compression to come back mediocre so I know what I have to do (even though I really don't feel like tearing into the engine again so soon).

Title: Re: 80mph top speed?
Post by J C Stokes on 07/21/12 at 23:39:16

In New Zealand we are in kilometers. With the original tyre fitted I once saw 150kmph or 93.2 mph indicated. With the new 140 90 15 I saw 140kmph or about 87 mph indicated. Didn't have absolute throttle but very near it, don't know how accurate the speedo is. Handbook says 100 mph at 6500rpm. 2008 made, 2010 registered S40 brought brand new. Plate says ignition complies with a Canadian emission law. Got two handbooks, one in English, one in Quebecois. Bike is stock fom dealership with a pack rack and bag and a Boulevard screen.

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