REFLECTOR: Gearbox alignment

[Brian Michalk]

I don't suppose there is a way to align and then tighten?

On the Franklin, if you replace the cylinders, then install the intake
manifold and torque things down, you will most likely crack the cylinders.
You snug up the cylinders, install the manifold, then finish torqing the
cylinders.

Failing that, ask this question over in rec.crafts.metalworking.


-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
Behalf Of Wayne
Sent: Sunday, November 14, 2004 10:57 AM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Gearbox alignment


Hi,
Are there any motorhead/ machinist among the group who have ideas about
aligning my Marcotte  reduction drive  to the Soob in N33SV? I have had this
"thrumming" vibration  since day one aand attributed it to the flexible
coupling/flywheel arrangement. I recently converted the drive to a solid
coupling with heavier flywheel similiar in concept  to Eggenfeller's
approach.  I machined a snug fitting bronze bushing to replace the pilot
bearing in the flywheel and it brought to light  the mis-alignment of the
reduction input shaft from the end of the crankshaft. It wallowed out in
about 10 hours.
How would you measure the axial and radial run-out  of the input shaft in
order to  relocate the mount and improve the alignment?
Dealing again with Marcotte is not high on my list.
Since most glass grinders arent interested in this stuff if you prefer to
respond off reflector my e-mail address is:wowens at darientel.net
Thanks,
Wayne Owens