Monday, August 15, 2011

Bonneville Bikes: 516 - 1952 Cushman Eagle

This will be the rookie run for driver David Harto.  This is a Cushman Eagle 315cc flathead so it gets some bonus and gets to run in the 250cc class.  Custom cam and valve work.  Ported and polished.  The old motor had a pitted cylinder but was cleaned up with the overbore.  Looking to break the record of 73MPH and on dyno test runs they were able to achieve 93MPH.

1st Run:  Took off slow then started moving, but stalled early on the course.  Although this is my first time at Bonneville I don't believe kick starting your bike on the live race course is the norm, but David did and continued on his merry way.  Found out from David that the bike was jetted way too rich.  They leaned the engine a bunch for pass 2.

2nd Run:  Made a clean pass.  42 MPH but had no power to pull high gear.  The difference between pass 1 and 2 was jetting.  They are now working on ignition timing for pass 3.

3rd Run:  Made another clean pass, no specifics as for time or speed yet, more to come.

Haven't seen the cushman guys in 2 days.  Never found them to get a final report on run 3.  Hope to see them here next year.



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