Bonneville America Forums Forums Technical Forums General Tech Shimmy in front wheel of America

I've got a new America that has got a problem with shimmy in the front. Decelerating from 80-60km is the worst. Just crusing at 70km is kinda OK but feels odd as there is a slight twitch all the time. Sometimes it even feals like the wheel is oval as it bounces a bit.

I've had it back to the dealer serveral times and it keeps coming back - in spec all OK- Well it ain't. In desparation I had a new tyre fitted today, the shimmy is now worse but the twitch is gone.

When looking at the rim while riding I can see the left side is perfectly true but the right side has a very pronounced wobble in the rim. My dial gauge indicates about 5mm wobble but the tyre is 1mm

The steering head has been checked and I'm told they even tried another wheel off an other bike but can't confirm this.

I'm sure the dealer thinks I'm imagining it so I'm considering giving the bike to the salesman to ride for a week so he can experience it and then maybe it'll get sorted.

If anyone has had similar problems or knows what I should try would be great.

If you can see the rim isn't true just by looking at it, then there is a definite problem. Others will chime in, but I seem to remember a lot of dealers being reluctant to deal with spoked rim problems. I think persistance is the key.

I have a bad rim...had the dealer take it for a ride...because he said it looks " a little out but not enought so that you should notice it"...I said "ride it" he did and said it was DEF the rim

They reported it to Triumph and Triumph wants exact dimensions of the rim and all the measurements of how and where its out...BEFORE they will approve the work....DO NOT WAIT TO BEAT THEM WITH THIS or they can claim it was caused by you hitting something...pot hole or something like that!!

Hi Guys,

I have a 2005 America. My front brake pulses when I use it. I don't think I have a rim problem, feels more like there is a thin spot on the front disk. The brake pulses enough to make the fork bounce in and out. It doesn't really bother me when I's slowing down from a higher speed but once I get below 10mph or so it makes me feel unbalanced.

Warped Disk?

~John~

Most likey a warped disk...take it to the dealer Triumph IS replacing these under warrantee!!! They had a bad batch and are aware of it..I have even heard that they are covering this PAST the warranty period...

Awesome, Thanks Rob.

I'll take it in ASAP.

~John~