flyrotary@lancaironline.net Mailing List Archive

Thanks very much Neil.

A plan could be, should the RD1C spines parts strength be questionable, leave it riveted to the 0.2inch thick aluminium damper plate. Cut/machine that plate down to the same circumference as the spined part, approx 5 inch, and Drill the 6 x 10mm holes and attach direct to the EShaft through the spacer machined to correct size.

Steve Izett

Sent from my iPhone

On 19 Dec 2020, at 6:42 am, flyrotary@lancaironline.net wrote:

Steve,
Further to your measurements. The centre to centre of the holes in the counterweight (E shaft) is 98mm. Bolt size is 10mm which makes the outer edge of the bolts 108mm or 4.25 inches. The OD measurement of my spacer is approx. 5 inches, so it would appear possible to mount tracy,s splined drive shaft plate direct to the E shaft with the 6 x 10mm bolts and spaced out with my spacer which may have to be adjusted for height – a simple lathe job. This as well known eliminates any ‘damping” in the drive line.
I do not have the measurements of just how high the splined plate has to be to clear the end of the E Shaft. Again everything is possible with time and money!!
A question to the group --- What is the Splined drive plate made from? I thought it was simply a machined cast, but it has been suggested it is a “sintered” casting. (weaker than normal casting) Does anyone know?
Neil.