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I took my bike out for a run on a tar road yesterday evening after replacing the cleaned carb to see if all was good, I got a bit of a wake up when it felt like a speed wobble coming from the rear tire! I had just changed the front sprocket therefore loosening the rear axle maybe it isn't straight?? Also just pumped up tires pretty hard??
Any thoughts??


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yeah, it feels like a wobble to me too

Check your rear wheel bearings. The only wobbles I have ever encountered were from the front. Check your steering head bearings too. They should be free, with no notch feeling in the center and there should be no up and down movement in the bars.

Jaguar wrote:yeah, it feels like a wobble to me too

shot dude !!! really helpful!!

have you put new bearings in the rear and front wheel?

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coleh2000 wrote:have you put new bearings in the rear and front wheel?

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yes rear only!!why??

had the same kinda thing might help.

I was getting apparently a speed wobble on acceleration and could tell on higher speeds. What I did was get a new used rear wheel/// bearings were good in it and spokes etc. Held air and almost new tire.

After numerous look overs and what not I was stumped. I then put my old wheel tire back on and I still noticed it just not as bad. Once again new bearings spokes tight and right and tire was meh maybe half couple lugs gone nothing major.

Now my fix might help you.

Looking at the chain and sprocket line up tbh I eyeballed it both times and it looked good......to the naked eye. Put a cheap laser on the chain (which works good) and quickly realized even tho it was on the marks it was off. Taking the rear wheel and axle off again and lining up the adjusted marks side by side there was incredible amount of difference between the two sides. Mostly due to I would imagine wear and time. What I did was just used a pig tail or small round file and matched both up close to possible. No more take off wobble for me and new rim and tire setup is back on with no problems as well.

Just something you might wanna check.

jimballs wrote:I took my bike out for a run on a tar road yesterday evening after replacing the cleaned carb to see if all was good, I got a bit of a wake up when it felt like a speed wobble coming from the rear tire! I had just changed the front sprocket therefore loosening the rear axle maybe it isn't straight?? Also just pumped up tires pretty hard??
Any thoughts??


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try again with 15-18psi, i bet it's less noticable.

wobbles are usually from a poorly seated bead (tire), worn out bearings, loose spokes, warped wheel, or in really worn out bikes, the swingarm bearings.

if your alignment marks are off your hill climb abilities will be sacrificed for your buddies laughter.

sometimes I go places on the road it does get a little bumpy at certain time and it could just be the road where you were driving on it

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Have you been on the road with it before? If not how about wheel balance? My 220 is plated and without about 4 ounces on the rear and 3 in the front is it impossible to go any speed without big time wobble. Off road you never notice the heavy rim locks. Now that I balanced them with no-mar weights 70+ is smooth wobble free.