Mailing List flyrotary@lancaironline.net Message #62496
From: Charlie England <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Alternator mount
Date: Sat, 28 May 2016 09:58:51 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Steve's top motor mount is a better version of what I did (mine's massive overkill), but we both can make vertical adjustments (tilt). I  could make very minor horizontal adjustments with my top mount tubes, as well, but it would load the bottom mounts asymmetrically.

I've attached pics of my alternator mounts (Renesis). Note that these are 'in progress'. The alternators are Nippon Denso 55 amp from mid-90s era Suzuki Samurai, etc with 15 mm diameter shaft. (Difficult to find serpentine pulleys to fit 15 mm shafts; 17 mm are far more common. The alternators from early 2000s era Suzuki passenger cars look like they *might* be the small frame 15 mm shaft with serpentine pulleys, but the mount ears are different & won't fit where the stock Mazda alternator fits. If you're running regular V-belts, it's easy to find V-pulleys for 15 mm shafts.

The #2 alternator has a pulley from a power steering pump with 15 mm shaft. It will be run by the 2ndary pulley on the Renesis e-shaft. Bigger drive pulley; bigger alt pulley.

Hope you can get some useful ideas from the above.

Charlie

On 5/27/2016 7:31 PM, Stephen Izett wrote:


Small Alternator on Renesis.
In Glasair there is very little room above engine so thermostat housing and alternator needed to be dropped.
Sorry the pictures don’t show mount.
Steve Izett
Perth Western Australia
On 28 May 2016, at 12:54 AM, Bill Schertz <flyrotary@lancaironline.net> wrote:

The attached phto is of my alternator mount and rear motor mount. It is attached to the engine using 5 bolts where various accessories were mounted in the automotive use. The bracket is pretty simple, and the link between the bracket and firewall can be adjusted in length to change the vertical tilt of the engine. I will send two more photos (to avoid going over limit on size)
<MM_rear_alternator_web.jpg>--
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