Need help w/high speed wobble on 2007 NT

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May 20, 2015 | 10:49 AM

#41

Warp Factor

Outstanding HDF Member

Joined: Aug 2012

Posts: 3,217

Likes: 90

From: Detroit

Quote:

Originally Posted by Next In Line

I must have higher standards than you when it comes to things being done correctly.

Highly unlikely. There is no "rule" that the bottom of the frame tubes need to be parallel with the road surface. I'm into actual correctness, not false or pretend, or "something I read on the internet" correctness.
There's quite a wide range of rake and trail values which will work just fine without causing any high speed instability problems.

In this case, the OP apparently had some air flow instability problems around his arms when they were in a certain position at certain speeds, and solved it with a set of bars which repositioned his arms. It's not an uncommon problem to have with high apes at high speeds. I had one bike where it would kick in like a **** right about 110 mph. Went completely away with lower bars.

May 21, 2015 | 11:50 AM

#42

Echo6 Sierra

Thread Starter

Road Captain

Joined: Oct 2012

Posts: 722

Likes: 39

From: Colchester, CT

Quote:

Originally Posted by Alain

I agree that the back end being lower than the front end is a contributing factor to his wobble. When I went 2 inches bigger than stock front wheel on my rocker without the raked trees I had the wobble as well.

Echo nice choice of drag bars ! Fit the bike perfectly !!!

Thanks, I'm really liking the look and feel of them myself.

Next In Line and Warp Factor, thanks so much for your input. The rake and trail article was an interesting read. What I'm wondering now is since the bars corrected the issue, will lowering the front end make a difference? I'm going to do it later on anyway, simply for aesthetic reasons...