Throttle thumb

mjkaliszak

New member
I have a couple of ideas. 1) try lubing the cable 2) loosen the throttle mount just enough so she can rotate it ( ever so slightly ) to a different position, when her thumb gets tired.

3) Mikuni carbs are connected by a coupling kit. Just behind the " bell crank " on the coupling shaft is a plastic sleeve that houses the Throttle Return spring. You can play around with changing the spring tang ( end ) position. Generally this is resting on a part of the carb body. You may have to bend it a little and move it's original position ( 45 -90 degrees ). thus decreasing the throttle pull. If you change the position you might want to secure the end somehow. OR try to replace the current spring with a lighter spring.

4) Drill a hole in the bell crank and attach a very light duty spring to add a mechanical advantage . For an idea of what kind of spring I'm talking about google " BMW EZ spring "

You might have to play around a little. I know guy's complain about their throttle pulls on thier bikes.

I assume no liability for this information, I rather not give this kind of advise but since you asked ..... It's just intended to give you some ideas. I don't believe that anything can't be over come. It's just a matter of persistance - time - money.

My wife gave up riding years ago, it had something to do with me yelling at her all the time.
My Bad.......
 

doogirl

New member
throttle

I have had some issues with the throttle/thumb problem as well. I had no problems with Skidoo brands, but trouble riding my husbands "off" brands. It was the position of the throttlle that bothered me. Newer skidoos I modifiy. I would suggest to rotate the thumb throttle under so it is more in line with the natural position of your hand. I tried those thumb things, they really didn't do anything to help and were a pain when taking gloves on and off. Also, if you use them tightened up, they seem to make the problem worse. To get into riding shape, squeeze a ball, or place hands on the table using fingers only, palms off the table, and do "spider push ups" I have my class do this to prepare for writing, and it strengthens the fingers and thumb. Just ideas, glad to see you including her in your hobby. Its a great sport.
 

lvr1000

New member
You never mentioned the sled type, so this may not apply. Several years ago my wife broke a rear shock on her sled at the start of a week trip. The back up sled was my tweaked '98 T-cat. Half a day into it she was complaining, after all she was pulling against three springs. On the side of the trail I clipped all three springs to about 60% their original length. She put 1000 miles on that sled that trip with no other complaints. Unfortunately for me, a 580 was longer enough sled for her and the next trip she was sport'n a new 800 triple.
 
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