There's a 50 - 50 (or better ) chance that it will fit as is, but
if lapping is necessary, it is done by brushing valve lapping compound on the
splined parts and engaging & disengaging the splined parts using rubber
mallet or other non destructive method to work the parts into shape.
This is what I do here to mate a Ford damper spline that happens to be on
the small end of the spec to an input shaft.
----- Original Message -----
Sent: Saturday, August 14, 2004 11:36
PM
Subject: [FlyRotary] Re: Ed's
nightmare
Arrggg! Not good news! Have not yet
tried to fit the new shaft into the splines - its going to be even more of
task to removing my mounting plate as it is integrated with my front motor
mount. Where did I put that sand paper??
You're right no - new dampener
plate. Lap the splines? Was it the outside diameter that was too
large or the teeth? If the Out side diameter then lapping it might be
the route to go for me - if you mean each individual spline then
- I think I want my B drive back (not - really).
Well, I was going to wait until next weekend to
get started, but now I have to run out to the hanger during the week to see
if the drive shaft will fit. Thanks for the heads-up,
Rusty
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Saturday, August 14, 2004 11:09
PM
Subject: [FlyRotary] Ed's
nightmare
Greetings,
I had a pretty
productive day at the Rev-3 work session. The main thing
remaining is the spinner cutouts, which will be a new experience for me,
since I've somehow managed to always have spinners that were
pre-cut. Man that's one serious looking prop :-)
Ed, I either lost a
few hours to you, or gained a few days (or more). My plan
was to replace only the drive, and not remove the plate or anything
else. Unfortunately, my new input shaft wouldn't fit in the old
dampener splines. It was just too tight to try to make
it go. Sure enough, the old input shaft was a fairly loose fit
in the new dampener plate, so there is a difference. I ended up
having to drain the cooling system, remove the rads, remove the
plate, and replace the dampener plate. This was only a couple hour
delay for me, but if your new input shaft doesn't fit your old
dampener plate, you're screwed, since you don't have a new
dampener plate.
I called Tracy,
and he said Ford wasn't all that precise over the years, and
that it sounded like my old plate was on the tight side, and the new
plate was more normal. He chose to make the C drive input
shafts a snug fit, so it just won't work with my old dampener
plate. I hope you have better
luck. He said it was possible to lap the splines
to fit, but wouldn't be worth the trouble for me, since I already had
a new one to install. The old one, being tight, is a better fit
for my old B drive anyway, so they might as well stay together. The
B drive is going to be for sale, BTW.
Cheers,
Rusty (should be
running, if not flying by
Monday)