Re: Re-Pitching the Ikara Prop

From: calgoddard <calgoddard_at_yahoo.com>
Date: Tue, 13 Nov 2007 23:10:25 -0000

Bill:

As usual, thanks for your expertise.

Can you describe why you like the Harlan bearing insead of the
standard Ikara thrust bearing? The latter allows you to quickly
change props onthe Ikara prop hanger.

I have Harlan's metal thrust bearings that are already sized for
the .020 prop shaft. He calls them his Science Olympiad bearings.
So there is no need for delicate drilling. But thanks for the info
on drill sizes. That may yet come in handy.

When you glue the shaft to the Ikara prop with CA, how do you know
it is perfectly perpendicular to the prop spars? There is a tiny
amount of slop there, but I suppose it makes little difference if
the prop is vertical at the time. Why do you glue the prop shaft to
the prop anyway?

One year our team used special prop bearings that were machined by
Geauga. They were really neat, but you couldn't swap out props very
easily and you had to make sure you used a tiny rubber motor to keep
the motor shaft pulled back during transport.

Thanks Bill.
Received on Tue Nov 13 2007 - 15:10:28 CET