clutch engagement high vs. low

newbluerider1

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I have been reading alot about this yet have not found an answer. What benefit does it give your sled to lower your clutch engagement to say 2500 rpm's vs' the stock of 36-3800. or after you clutch it raise it to almost 5 grand. I guess i am looking for both pros and cons here. I clutched my rx1 with a heavy hitter clutch kit and it engaged about 4800. I have left my new attack alone for the time being but with so much torque would it make more sence to engage sooner than later. Thanks David
 
You want high engagement for racing, especially drag racing. For traction, you can max out skid transfer and stud track and blast out of the hole. Many get a higher engagement by placing more weight on the tips of arm in primary clutch.


Mountain guys, and others who do not want to spin the track, or maybe don't have any skid transfer, want a lower engagement. Achieved by placing low weight or no weight on arms in primary clutch.



This is the way I understand it.......




Mike
 
i guess maybe that is what i am asking, wouldn't it make sense to have a lower engagement for less track spin at take off rather than just spin until you get traction. why i am asking is i have made all my adjustments to the sled, just can't seem stop it from spinning out of the hole. IMO i would think if you lower engagement your less likely to spin out because you have started some momentum...........please correct me if my thinking is way off base here
 
Especially for Mountain and off-trial riders, they want as little track spin as possible, so they don't just dig straight down or trench at take off. But I suppose any rider who wants less spin can lighten up their primary to achieve this.


I think there is a happy medium most guys try to find. You want to take advantage of rpm's and more torque for take off, but not spin, which just wastes power.


For your application, you could lighten up your primary a tad to lower rpm engagement for less spinning.


But you may also want to set your skid differently for a little more transfer back you your track and more traction. Traction products like studs may also help.


My sled has a similar condition to yours -- I have my limiter strap second hole from least transfer and I have my transfer rod set to the least transfer possible. It corners very well, but is not set up for great off the line take offs/ starts.



I bet you are set up similarly, set up more for high speed cornering. But that is just my suspicion, not trying to be nosy!



But back to your question, you could lighten up your primary also for less track spin too -- you have less rpm's and less torque in play when the track starts spinning.




Please just keep in mind I am no racer or clutching guru. Others may want to chime in here with thoughts too!






Mike
 
Lower is best..in the day...my mod (340 and 440) had to engage at 5000 any more..and it would spin...

Your sled does not have the weight transfer we had..so that will be hard to dial in for you. I think that is more your problem than clutch.

To use the low engagemnt with a carb..you really had to understand jetting..

I don't have a 4/ yet..but from the ones I have driven..my first plan would be to dial them down. They have the power..
 


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