Just wondering what a LS650 with Lancer's performance cam and carb setup would show on a dyno.   That would likely be the max performance capable with the thumper engine short of boring over, head job, etc.  

Also, any stock LS650 dyno results published anywhere?

Maybe we can get a general idea of what power characteristics differenct mods make with this bike.  The dyno will also help fine tune the carb to our bikes with each mod.  This has peaked my interest since the dyno exhaust analyzer showed my pilot jet was surprisingly rich.  

I'll post my dyno results when I finish it next week.  Gotta get the jets in the mail first.

Your local dealership has a DYno on there bike nights I could give it a shot but mines not stock. And its $25. that doent bother me I was going to wait til me bobber is done and dyno it, with the bore and stroke done.

I try not to be that guy, but this link was Google's first result for "dyno site:suzukisavage.com".  If you didn't know the site: trick then I forgive you.  

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1185590369

This is reportedly a stock bike before (stock) and after (supertrapp).  Possibly the idle mixture screw mod ahd been done.  Apparently the carb is otherwise stock.

http://www.thumperpage.com/articles/ls650exh.html



Same graph but with addition of another LS650 with Jardine slip on.

I'd like to know too. For the graphs above, is there a way use the hp and speed to deduct torque so I could plot the torque curve?

Edit:  I found this: http://www.dragtimes.com/horsepower-torque-calculator-conversion.php?hp=30&rp...

The horsepower - torque conversion is pretty easy, given RPM.

Horsepower = torque * (rpm/5252)

Torque = horsepower * (5252/rpm)

At 5252 RPM the horsepower and torque numbers are equal.

Unfortunately, the curves shown above are in MPH instead of RPM. That probably means they didn't make a tach connection. It is customary to run Dynojet curves in 4th gear, so you can attempt to look up standard gearing and make the conversion, if you want. The Dynojet actually measures rear wheel torque and computes horsepower. It is common for the drive train (belt, transmission) to absorb 10% - 15% of the power, so the engine power would be that much greater than rear wheel power.

I rather wonder why the "stock" curve cuts off sooner than the "Supertrapp" curve. Looks to me like the "stock" curve may have still been climbing. The very sharp drop at the top looks to me like a throttle chop, although it could have been a rev limiter. If it's the rev limiter, why is it different between the curves?

Cooler air is denser so it gets more oxygen into the engine.  This will result in more power.

Don't worry about the torque number.  Horsepower at the rpms actually running is all that matters.  Forget all the shadetree mechanic blather about torque just like we should forget about peak horsepower except for the few times we're actually running at peak.  

The dyno test is at full throttle, which is the range the main jet makes the big difference, so does the needle jet spacer make much difference?

It looks like the H-D muffler doesn't make much difference except in sound levels, or does it?...Does the stock muffler get congested at full throttle high rpms?  

What is the best combination for mid-range throttle where we're at when passing or other everyday situations?  I'll trade peak power for mid-range power any time.

Soooo, I be the Raask guinni pig (soon)...

(rebuilt engine with many of the bells & whistles)

Wolf  

Lancer cam and soon nitrided cam chain
Lancer recommended Mikuni 38mm roundslide carb w/ UFO and dial-a-jet
    (need to order throttle cable - may rejet stock carb until this          arrives)
Verslavy cam chain tensioner
K&N 1250 cone
Bore tech bore, hone and carbon treatment with o/s Suzuki piston kit
Raask 60mm Dragpipe
and good ole Savage Eddies 5 speed  

(just awaiting the cam chain, throttle cable and Bore tech procedure)

ahhh, nothing has been done to the Ls650 look; well, the airbox is gone!    

Gotta get it rebuilt and run first  

... and then "bob it"