: -------------- Kelly, it's a 2.17. It appears that the four nuts on the back side hold the input shaft bearing with big flat washers. Unfortunately, the bearing allows the shaft to move up and down a lot and their is too much shaft movement forward and back. Their was a reverberation at 3200 rpm that sounded like it was coming from the planetary gear. This is on a Subaru engine, not a rotary. My 20B is still on my workbench. Thanks! Ben ----- Original Message ----- From: Kelly Troyer To: Rotary motors in aircraft Sent: Tuesday, June 14, 2005 1:19 AM Subject: [FlyRotary] Ross unit disassembly Ben, Is your Ross drive 2.17-1 or 2.85-1 ? -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 --NextPart_Webmail_9m3u9jl4l_28839_1118760080_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Ben ,

What is the history of your Ross?? Did you purchase from Ross and does

it have input shaft thrust bearing installed ? Are you running your Suburu

with or without a prop (not a good idea) plus no load on redrive gears could

contribute to the reverberation ? Finally the four bolts/washers are most

likely holding the input shaft oil seal carrier in place........My guess is that

your Ross has no input shaft thrust bearing........Most flying the Ross for

any length of time have retrofitted a thrust bearing........The input shaft will

eventually beat the Mazda thrust bearing to failure........ask Tracy Crook ! I

do not know how much problem this is with the Suburu......

If I may ask what redrive do you plan on using for your 20B ?

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

-------------- Original message from "Ben Baltrusaitis" <ben@gmpexpress.net>: --------------

Kelly, it's a 2.17.

It appears that the four nuts on the back side hold the input shaft bearing with big flat washers. Unfortunately, the bearing allows the shaft to move up and down a lot and their is too much shaft movement forward and back. Their was a reverberation at 3200 rpm that sounded like it was coming from the planetary gear.

This is on a Subaru engine, not a rotary. My 20B is still on my workbench.

Thanks!

Ben

----- Original Message -----

From: Kelly Troyer

To: Rotary motors in aircraft

Sent: Tuesday, June 14, 2005 1:19 AM

Subject: [FlyRotary] Ross unit disassembly

Ben,

Is your Ross drive 2.17-1 or 2.85-1 ?

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

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