Need Help with Anti-Squat and Swing Arm Angle!!!

[jaredc7]

Help! Up to my eyeballs in motorcycle suspension geometry!!!

SO... my main goal is to design, fab, and weld in the top mount for the rear shock. But since I have the freedom to make the suspension geometry exactly how I want it, I am hoping to optimize the anti-squat by getting the best swing arm angle, chain angle (top of sprockets), and anti-squat angle. Read this article for some more information

http://www.sportrider.com/tech/146_0404_motorcycle_traction_geometry/

I have also been reading through "Race Tech's Motorcycle Suspension Bible", specifically chapter 5 (pages 82-94). It is really interesting, but I may be too caught up in the details. Ideally, you should have anti-squat at a little over 100%. And to back out from that the swing arm angle and chain angle (top of) is becoming very difficult.

I would like to have a very clean look for the monoshock top mount, i.e. a single mounting hole. However, I am thinking I will have to do this anti-squat optimization by trail and error. Meaning, I may have to weld in a top mount with 2 or 3 mounting holes, just so I can adjust the swing arm angle and chain angle to get the optimum geometry. Seems like an exercise in "trial and error" that I can't avoid!

Any thoughts out there?! Thank you for any feedback you may have!

Here is my build thread...
http://www.dotheton.com/forum/index.php?topic=55387.0

Thanks,
Jared

 

[cxman]

i still dont see how you are going to stop the frame from being a noodle and dangerous

you will get more squat out of the frame than the suspension is my guess

 

[Nebr_Rex]

i still dont see how you are going to stop the frame from being a noodle and dangerous

you will get more squat out of the frame than the suspension is my guess

I agree, wrong frame for that modification.

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