"Compression Braking" and High Revs

[misteright1_99]

HI
Interesting question but truthfully I have tied compression braking on my bike and it really doesn't seem to offer much in the way of braking....I wonder if sprocket size affects it much?....On thing I did think of but haven't tried (since I have not hooked up my kill switch (I will when I get a chance tho)....I always choke the engine off)....is killing the engine....that should probably give some good braking....Hopefully not so much as to skid the wheel tho.....
Andrew

I wouldnt think that would do much different than just going off throttle to brake Andrew. The one pitfall I can see is when you power the engine back on and release the kill switch after sucking and exhausting all that unburned gas. We used to do that in our manual shift cars in the 70's you get one heck of a pop, one I'm not sure the HT engine would stand up to.

 

[andyinchville1]

Heh...heh...True...I have blown a muffler with a backfire on a truck before...I don't think I wanna grenade the old HT! ;-)

Andrew

 

[misteright1_99]

There has been discussion and some mods to the engines in the form of a compression release. We used those on motocross bikes way back then for ease of starting and slowing down.....

 

[jahmez20]

From what I understand, 2-stroke engines don't compression brake, that's a feature of the 4 stroke variety.. And yea not to repeat.. But you can burn it up... It's the throttling down little by little that can give your motor more life. I've noticed that my springs don't disengage automatically, I think I need new springs, but I am not sure that you are talking about the same thing I'm experiencing. Maybe you do have a sticky throttle cable.

James

 

[mcassMB6]

What is the best way for me to test if I have a "sticky" throttle cable" safely? Can anyone suggest what I should do...

 

[jahmez20]

Throttle cable

If you can see your where the cable meets the carb, just watch the little lever while you twist the grip, or have someone twist it for you. (WHILE THE ENGINE IS OFF) You should be able to see if it sticks or not. Or, to be safe, just go to your local bike shop and ask if they'll install a new one for you. Should cost less than $20.

 

[misteright1_99]

You just twist the throttle with the engine off. Does it feel smooth? Does it spin back quickly when you let go. I would check the throttle cable for sharp turns, kinks, maybe pinched somewhere if that is the problem....

 

[Huntington]

An easy and for sure way to check is by removing the throttle from the HT. Just unscrew the cap the cable is running into, (do not remove the cable, remove the big hex cap). Hold that in your hand and twist the throttle, watch how much play you have, this is also a good time to adjust your throttle tension.