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what makes a bigbase motor

Moderators: Curt!, Pa

Post Sat Sep 18, 2010 11:48 am
jib

Posts: 575
Location: devon,england
hi dont know realy much about indians..... would someone like to say what exactly a bigbase motor is and how it differs from its nearest and dearest, thanks in advance
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Sat Sep 18, 2010 3:52 pm
panic

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Last edited by panic on Sun Nov 28, 2010 12:26 pm, edited 1 time in total.

Post Sun Sep 19, 2010 8:12 am

Posts: 3131
Location: Central Illinois, USA
Jib and All!

The first modern attempt at reproducing the Big Base motor was by Lyle Landstrom: http://virtualindian.org/projbb.htm

I seem to remember the project was subsequently assumed (or pirated?) by somebody on the Left Coast, with poor results.

At Davenport this year, I caught wind of yet another attempt to produce improved cases.

It would be great if the Host of this forum would premier their long-awaited cylinders!

...Cotten

Post Sun Sep 19, 2010 8:54 am
panic

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Last edited by panic on Sun Nov 28, 2010 12:26 pm, edited 1 time in total.

Post Sun Sep 19, 2010 12:03 pm
jib

Posts: 575
Location: devon,england
thanks guys, so was there only 5 bigbase scout motors built? . pop up piston, small ports, relieved? cam overlap/timing/lift/duration,?
so were these motors the pinnacle of Indian side-valve technolgy.

on another note... panic would the crankcase expansion bottle idea work for a 45 as well, or woulds it inhibit the pressure needed to vent the oil via the tower ?
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years


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