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What does a higher idle promote?

Started by motomadness, May 15, 2004, 05:53:39 AM

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motomadness

Higher corner speed, less engine braking, or both?  250/2-stroker love less engine braking, they can rail through turns.  What does the higher corner speed come from?

Woofentino Pugrossi

MAinly out of neccessity. Have to keep the revs up on 2 strokes since they dont make squat for power down low. Plust they are soo much lighter than the 4 stroke bikes.
Rob

CCSForums Cornerworking and Classifieds Mod

motomadness

#2
I guess I should have been more specific.

what is the benefit on a 4-stroker?

I think it helped me go faster, but I want to understand where it might have aided me.

Woofentino Pugrossi

I have mine about 3500 on the F2. Keeps the rpms up in corners.
Rob

CCSForums Cornerworking and Classifieds Mod

SVbadguy

I run a higher idle because it makes the throttle less abrupt and I can be smoother through the turns.

xseal

same.  it reduces the effect of engine braking on turn entry.  sort of the poor man's slipper clutch.  

motomadness

That's what I was thinking.  3,500 rpm.  Isn't that really higher if you are just sitting around the paddock waiting to go out?

Woofentino Pugrossi

QuoteThat's what I was thinking.  3,500 rpm.  Isn't that really higher if you are just sitting around the paddock waiting to go out?


My idle spped knob is right by my leg. Easy to adjust on teh bike.:D
Rob

CCSForums Cornerworking and Classifieds Mod

Super Dave

Ultimately, you are affecting the chassis with some chain torque induced anti-squat.

The reality is that your chassis is not as good as it could be, but the addition of some "preloaded" throttle opening cleans up the chassis snafu.
Super Dave


EM JAY

QuoteUltimately, you are affecting the chassis with some chain torque induced anti-squat.

The reality is that your chassis is not as good as it could be, but the addition of some "preloaded" throttle opening cleans up the chassis snafu.
So translated....Good or bad?  Is it just a quick fix for a chassis or suspension problem?
Michael Jordan
           CCS EX #??   ASRA #??
   01 SV Midwest
  Thanks to Expert Racing Ltd. in Chicago and Madness Custom Choppers of Fox Lake

motomadness

I think there were two benefits:
- I was setup better going into turns (speed)
- I had better down shifts before I even initiated my turn (suspension was settled)

I think the higher idle reduced the problem I was having with wheel hop, which resulted from poor clutch habits left over from the TZ (no engine braking).  The higher idle reduced the engine braking by reducing the engine's pumping losses.  The lower the engine braking effect, the more settled the suspension was for me.  The additional benefit was that the engine rpm's haven't dropped too much, so I can get back into the power a little faster (what I like about the TZ)?