Re: Axle locations


To take the variability out of the laser beam you have to "shoot" through
cross-hairs mounted on both sides of each wheel pant. The laser pens are
horribly inaccurate from a "beam alignment to case" standpoint, but the beam
by itself will always be perfect. I made cross-hair templates and taped
them to both sides of each wheel pant. Then taped white thread onto the
cross-hair marks. I then shot through both cross-hairs on the first pant
across to the far pant. Remember to put the wheel pants on dollies so that
they can move as the weight is added. My camber alignment was 8" out on one
side and 3" on the other at 1250# gross weight. Yikes! This makes the laser
very accessible and easily adjustable. To align the hole, the outer
cross-hair template is re-positioned until the beam shoots through to the
inner cross-hair of the far pant perfectly. If anyone needs to discuss the
procedure a little more to understand, call me at (303)977-3758 days,
(303)688-6099 eves. It works and is not at all difficult to do. ~T~

-----Original Message-----
From: Michael D. Callahan [mailto:micallahan@...]
Sent: Sunday, October 01, 2000 9:50 PM
To: Q-LIST@...
Subject: Re: [Q-LIST] Axle locations

I have to agree with Mike on the laser being more trouble than it is
worth. I am redrilling my wheelpants after remounting the right one and
finding the left one lining up on the leading edge of the opposite wheelpant
right under the canard when eyeballed (and lasered) through the axle.
I turned down a couple of aluminum bushings to fit finger tight in the
axle and found some phenolic tubing with 3/8" outside and 1/8"inside dia.
that fits inside the aluminum bushings. This assembly dials out at less than
.001 on the lathe, yet when installed I can move the beam at least five
inches in all directions at the opposite wheelpant. Inserting a brass tube
with a 1/16" bore gets it down to about three inches which is still
unacceptable. I'm going to sight it first and then use a string for final
checking. Mike C.
----- Original Message -----
From: Mike Dwyer <mdwyer@...>
To: <Q-LIST@...>
Sent: Sunday, October 01, 2000 2:54 PM
Subject: [Q-LIST] Axle locations

In 1985 my axle holes were set to sight an inch and a half forward of each
other at gross (the Gall numbers? = toe out and no camber @ gross). After
15 years the canard creeped enough to be about 3 degrees camber - see

The ground handling slowly degraded to the point where at 3 degrees I
could still fly and land but it was touchier.

Using the laser was a pain, it was easier to just sight down the axel

Mike, Q-200

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