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Old 01-01-2018, 09:37 PM
Graham Graham is offline
Join Date: Mar 2012
Location: New Zealand
Posts: 35
Default Cummins Spinners


I am fitting a Cummins aluminium spun spinner to my almost completed RV6.

The Cummins installation instructions do not require the spinner to be checked for "tracking" of the nose as the Vans instructions do. This is presumably because there is no need to trim the aft edge of the Cummins spinners, whereas the Vans spinners need trimming.

Can those of you who have fitted these spinners please advise whether they bothered checking the tracking prior to drilling the spinner backplate & fwd plate.

Thank You
New Zealand.
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Old 01-01-2018, 10:57 PM
Ironflight's Avatar
Ironflight Ironflight is offline
VAF Moderator / Line Boy
Join Date: Jan 2005
Location: Dayton, NV
Posts: 11,571

Ours was dead on, without any need for adjustment.
Paul F. Dye
Editor in Chief - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
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Old 01-02-2018, 07:37 AM
Larco Larco is offline
Join Date: Mar 2005
Location: DVT Phoenix
Posts: 996

Same here, dead on. We love our spinner! :-)
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Old 01-02-2018, 08:33 AM
pilotkms pilotkms is offline
Join Date: Mar 2007
Posts: 156

I mated the back edge of the spinner to the back edge of the backplate. In addition to appearing properly centered visually, I subsequently Had my prop dynamically balanced and the balancer advised it had no impact and he had to remove the VERY thin shim-weight that was installed on the prop by the factory to remove the SMALL amount of vibration.
RV 7A. RV #9700
Built in SoCal KCCB
Phase 1 Completed Nov 2017
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