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dirtbikedave

Need easier clutch pull for RL250

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As I'm getting older, I'm having more trouble working the clutch lever with one finger on my stock 75 RL250. I took two springs out of the clutch, added a new cable, and this helped for a couple of years but now having trouble again. Anyone found a mod that works?

Maybe extending the length of the arm inside the cover (not much room in there). or Has anyone tried a clutch cover off of a TM250? This would be more like a Beamish.

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Is the TM250 cover the type that pulls on the pressure plate via a rack rather than using a rod through the mainshaft from the left side of the motor?

My RL250 had the rack type when I owned the bike but I never got to try the original set up to compare the 2. The rack type cover would allow you to extend the lever easier in theory

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Bike evolution is repeating itself ....I thought the reason people rode old twinshocks was that they thought that using the clutch with one finger and all the other modern techniques was for little girls [you will have to forgive me for this turbofurball ....boys will be boys, sorry].......completely confused ....they didn't even use to cover the front front brake lever in those days....just dump the clutch and use the throttle.

Edited by oni nou
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Check out Matrix Motor Sports  web site  and check out the clutch issue with these bikes.  He has allot of info on the clutch for the RL250 and what sounds like a good fix along with other ideas on the RL250.

Sam

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Matrix has some good mods but on the clutch you change out 3 of the springs for lighter ones.

I've already removed 2 springs so I think I am close to the same as a Matrix upgrade.

The stock RL250 (U.S.model) had the TS250 setup with that plastic spiral attached to a very short clutch arm that catches a lot of dirt slung off the chain.

You have to clean it very often for it to work smooth.

On the TM250 motocrosser they moved it away from the chain. Like the Beamish Black engine.

My question, is this an easy bolt on or is there some modification need to be made. I think I need the cover, arm, thrust bearing, pinion and rack, but not sure if I need the clutch basket and cover.

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Basket is the same, not sure about pressure plate.

Easiest way to find out is look on partzilla & select the pressure plate from the RL & it will show what it fits, if it doesn't fit the TM or TS with the rack then you'll know you need that as well 

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15 hours ago, trapezeartist said:

He says he has the fulcrum pin in the "easiest" setting, but actually that's the "hardest".

Sorry don't understand that logic.....the longer the bar is between the point of pivot[fulcrum] to the point of pulling the easier the pull will be eg a TY 175 clutch can be made to pull easier by adding an extension to the clutch cam[point of pivot/fulcrum] arm to give the easier pull.www.tyoffroad.co.uk sells one in the engine parts section ref Y0 17.

Edited by oni nou

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8 hours ago, oni nou said:

Sorry don't understand that logic.....the longer the bar is between the point of pivot[fulcrum] to the point of pulling the easier the pull will be eg a TY 175 clutch can be made to pull easier by adding an extension to the clutch cam[point of pivot/fulcrum] arm to give the easier pull.www.tyoffroad.co.uk sells one in the engine parts section ref Y0 17.

It's not just the distance from fulcrum to pulling point that influences the "lightening". It's the ratio of fulcrum-to-in-cable to fulcrum-to-out-cable. And moving the fulcrum to the right in the photo will make that ratio larger.

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1 hour ago, trapezeartist said:

It's not just the distance from fulcrum to pulling point that influences the "lightening". It's the ratio of fulcrum-to-in-cable to fulcrum-to-out-cable. And moving the fulcrum to the right in the photo will make that ratio larger.

So you are  saying that the clutch will have the lightest pull  if the pin is moved 2 holes to the right in the image

Edited by oni nou

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18 minutes ago, oni nou said:

So you are  saying that the clutch will have the lightest pull  if the pin is moved 2 holes to the right in the image ?

Yes very good I see what you are saying thanks.

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On 19/02/2018 at 10:38 AM, oni nou said:

Bike evolution is repeating itself ....I thought the reason people rode old twinshocks was that they thought that using the clutch with one finger and all the other modern techniques was for little girls [you will have to forgive me for this turbofurball ....boys will be boys, sorry].......completely confused ....they didn't even use to cover the front front brake lever in those days....just dump the clutch and use the throttle.

What’s wrong with using two fingers if you need to operate the clutch? 

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