Planet Minis

Loststarboy

Hey guys now that I got the suspension on the bike and have been riding it alot more I have noticed that when I start going pretty fast and shift into 2nd sometimes it will be going in 2nd then just pop out of gear. It is like it hits a dead spot in the tranny. What would be possible causes and is it worth replacing or just replacing.

Also what gearing are you guys running I want more low end.

Lastly everyone with extended swingarms, are you guys using a spring chain adjuster or what. I only ask because sometimes the chain seems loose when it is bouncing across the field.

Thanks for any help in advance.

firepower354

Likely a bent shift fork and/or worn engagement dogs. I have spare parts, cheap. Or, a better choice is a $149 AHP 4-speed, which I also have.

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Loststarboy

Is the AHP 4 speed a semi auto or manual and does it make a difference on low end power adding another gear?

dirtbkr188

Assuming that you have the stock XR70 semi-auto clutch, the AHP 4-speed trans cluster will work with the semi-auto or a manual clutch, if you decide to add that in the future.
The difference in low-end power depends solely on what your final gearing setup is.

RookieRecurve

I do not know about the extended swingarm, but I am assuming that you would need more slack in the chain than the 5/8ths recommended. As the swingarm travels up, the overall length would increase. A longer swingarm would further add to that. Go with a chain tensioner and save a blown chain. Cheap insurance as far as I am concerned.
As far as gearing, a smaller front sprocket will give you more bottom end, but will reduce your overall top speed. Usually on these little bikes, top speed is not a prime focus though. IMO.