Motorcycle Racing Forum

Motorcycle Talk => Wrenching => Topic started by: EM JAY on October 08, 2010, 10:32:07 AM

Title: Lowering links vs Suspension adjustment
Post by: EM JAY on October 08, 2010, 10:32:07 AM
  Can you effectivly use the suspension to lower a bike without jacking up the effectiveness of the suspension?  ...asking for a friend...
Title: Re: Lowering links vs Suspension adjustment
Post by: Cowboy 6 on October 08, 2010, 12:38:20 PM
The geometry of the bike will be really messed up. In specific, the swingarm angle. Tell your friend that the best way to "lower the bike would be to shave foam from the seat (if you can).
Title: Re: Lowering links vs Suspension adjustment
Post by: EM JAY on October 08, 2010, 01:44:48 PM
 Totally forgot about that idea..  Thanks.
Title: Re: Lowering links vs Suspension adjustment
Post by: GMD Computrack Atlanta on October 22, 2010, 03:48:20 PM
We lower bikes all the time without lowering links.  We do it internally in the suspension thus not altering the geomety.
Title: Re: Lowering links vs Suspension adjustment
Post by: K3 Chris Onwiler on November 01, 2010, 10:25:58 PM
Could you elaborate on how that works?  I understand how that works with the forks but not the rear end.  If you "internally lower the suspension," IE the rear shock, how does that not change the swingarm angle?  I'm thinking that the only way to lower the rear of a motorcycle without altering the swingarm angle would be either to put a smaller diameter rear wheel on it or to move the swingarm and rocker pivots higher into the frame.
Title: Re: Lowering links vs Suspension adjustment
Post by: Cowboy 6 on November 02, 2010, 08:40:57 AM
:pop:
Title: Re: Lowering links vs Suspension adjustment
Post by: Super Dave on November 02, 2010, 04:35:31 PM
Quote from: K3 Chris Onwiler on November 01, 2010, 10:25:58 PM
Could you elaborate on how that works?  I understand how that works with the forks but not the rear end.  If you "internally lower the suspension," IE the rear shock, how does that not change the swingarm angle?  I'm thinking that the only way to lower the rear of a motorcycle without altering the swingarm angle would be either to put a smaller diameter rear wheel on it or to move the swingarm and rocker pivots higher into the frame.
Yeah, I agree.  Not just the angle, but the relationship between the swingarm pivot, the rear axle, and the countershaft. 

Title: Re: Lowering links vs Suspension adjustment
Post by: Burt Munro on November 02, 2010, 05:49:28 PM
Oh come on.....  it's Election season.....  just trust him!
Title: Re: Lowering links vs Suspension adjustment
Post by: GSXR RACER MIKE on November 03, 2010, 11:01:18 AM
Quote from: Burt Munro on November 02, 2010, 05:49:28 PM...it's Election season....
Not any more, the people have spoken!

Now back to the regularly scheduled drama..... :thumb:
Title: Re: Lowering links vs Suspension adjustment
Post by: HAWK on November 06, 2010, 07:23:59 PM
Somewhere in the middle actually. Shortening the shock will alter the geometry as well as alter the location within the curve of the progression that you are riding in as well as the squat/anti-squat characteristics. All of which will have a huge impact on the way the rear suspension works. In reality you would have to look at the bike in question, changing the links might work for or against you depending on what you want to accomplish and what you're starting with.