[buschracing]

http://www.hardcore50.com/vbulletin/showthread.php?t=57165

dont understand that chamber design. so much for good pressure recovery. all his stuff makes great power with chambers like that, so maybe the theory is wrong.

 

[Chris Uratchko]

Depends on the seat angle... probably not the best case scenario for a 55 degree seat in terms of pressure recovery.... and I wouldn't call that a theory.

 

[HS 3131]

Saw it @ PRI. Really nice head. I think that chamber was for a blower if my memory serves right.