Animal Clutch Stall

sundog

Member
Unrestricted stock animal on methanol @375, what's a good clutch stall for a Horstman Reaper on a tight asphalt track.

Thanks,
Sundog
 
3900-4000. It depends on where your peak torque is on your animal engine. Some are lower, some are higher, but peak torque is where you want to be. Typically for road course engines, we try to move the power band up (to turn the engine higher rpm). Momentum ovals do not require as broad of a powerband and therefore you generally turn them less rpm (even with the same engine / cam / powerband, etc.)

Now...with that said...if your sprint track has a particular corner that barely disengages your clutch, then you may want to lower your clutch stall slightly to accommodate this corner and keep the clutch locked up 1:1 (or nearly.) Again, this is NOT something you worry about on most oval tracks and the rpm drops are not nearly enough to even get close to the clutch engage rpm.


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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz

www.CarlsonMotorsports.com
Carlson Motorsports on FaceBook
29 years of service to the karting industry
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
 
Once your up and running on ovals, The engine never falls below the stall speed. setting the stall speed is for only getting you going. After that it doesn't come into play. Am I correct?
 
Once your up and running on ovals, The engine never falls below the stall speed. setting the stall speed is for only getting you going. After that it doesn't come into play. Am I correct?

On momentum ovals typical of sanctioned kart racing, yes.
You have to be careful when addressing a wide audience of racers like we have on here though. Some may be running a tight little backyard paperclip track that you see corner drops in the thousands rather than hundreds. :)
 
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