wheels keep turning at idle
my wheels keep turning at idle. I have done the pinch test and and it dies after 3 seconds just like it should but i just can't get the wheels to stop spinning even when the engine is warm. the gap in the carb is set to about 1-1.5mm but if I put the trim down to bottom so only the 1mm gap is left, it will die. if I richen it up at the bottom, it will just cause the engine to stall rather than stop the wheel spinning.
I really dont think this is a needle setting issue. Can anyone suggest what else this maybe? Thanks in advance |
RE: wheels keep turning at idle
is it moving when you put it on the ground?Or only when its off the ground?
Likely the clutch is staying engaged... pull the clutchbell off and see if the spring broke. |
RE: wheels keep turning at idle
the springs dont appear to be broken. i can pull both clutch shoes and the spring back.
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RE: wheels keep turning at idle
ok it has real clutch shoes & springs then.... maybe they dont have enough tension anymore. What car is this? And you didnt answer.... is the clutch still engaging at idle with the car on the ground....or only when the tires are off the ground (which is normal...)
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RE: wheels keep turning at idle
LSN is too rich. Weakening the mixture will cause the revs to be higher for the same throttle gap.
http://www.rcuniverse.com/forum/fb.asp?m=10444469 |
RE: wheels keep turning at idle
Yeah it definately sounds likeyour LSN, i had the same problem 2 weeks ago, my HSN was too lean and i had a rich LSN to compensate and it was just moving all the time, give your LSN a fiddle mate, should sort it out.</p> |
RE: wheels keep turning at idle
ORIGINAL: Fuel Crazy ok it has real clutch shoes & springs then.... maybe they dont have enough tension anymore. What car is this? And you didnt answer.... is the clutch still engaging at idle with the car on the ground....or only when the tires are off the ground (which is normal...) Why is it normal for the wheels to spin when the wheels are off the ground? my xtm mammoth wheels dont spin when off the ground at idle but it doesnt stall. Thanks for your help!! |
RE: wheels keep turning at idle
Sometimes the bearing resistance in the clutch bell is enough to get the wheels spinning when they're off the ground. My NTC3 does this. However once it's on the ground it will sit perfectly still with no brake applied.
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RE: wheels keep turning at idle
Try to tighten up your brake a tad bit more.
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RE: wheels keep turning at idle
IMO that's not the right fix. You shouldn't need any brakes at all to keep the car stationary.
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RE: wheels keep turning at idle
i agree. If you have it applying the brakes at idle, you are probably just gonna burn up the clutch shoes quicker as they are still trying to engage and turn the clutchbell regardless.
Ive never had needle setting make the clutch engage at idle...but i guess its not impossible. Anytime ive had clutch engaged at idle was because the springs were too soft for the RPM the engine wanted to idle at. |
RE: wheels keep turning at idle
ORIGINAL: Fuel Crazy Ive never had needle setting make the clutch engage at idle...but i guess its not impossible. Anytime ive had clutch engaged at idle was because the springs were too soft for the RPM the engine wanted to idle at. Yes of course he could have weak springs but the throttle gap tells me that he runs at a high idle speed...maybe you and I would know that straight away by sound..maybe he does not. ;) |
RE: wheels keep turning at idle
very possible i supose, just seems weird to me. Ive had some idle so rich it left a puddle of fuel on the ground, and would load up and die in 25-30sec.. but still did not have to idle so high as to engage the clutch. But not knowing what he has since that still hasnt been answered...its possible that the clutch springs allow for a very low stall speed and thats the reason for it.
Hard to diagnose a problem that can have quite a few reasons for it, without having it in front of you to see exactly what its doing. |
RE: wheels keep turning at idle
Anthoop has it, it's a tuning issue. Lean the LSN while simultaneously turning down the idle until it will stay running without throttle or clutch engagement. If that really isn't it, get slightly stronger clutch springs.
For the benefit of anyone else reading this thread and wondering why the wheels move when the car is OFF the ground; this is completely normal. However, when placed on the ground the car should stand still and idle without dying. |
" For the benefit of anyone else reading this thread and wondering why the wheels move when the car is OFF the ground; this is completely normal. However, when placed on the ground the car should stand still and idle without dying."" JUST SEARCH AND YOU SHALL FIND.
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