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Re: Engine on test stand
I'm sure Tracy will concur, you would be surprised on the things you notice & rectify while running an engine on a test stand (when I ran a Blanton belt re-drive the drive sound scared the hell out of me) . Make sure the stand is really secure!! I bolt mine to a trailer (attached to a truck) remember you will need extra cooling (I add a thermostatically controlled dual electric fans to a large rad) & depending on the proximity of your neighbors, a large muffler(mine are 2 miles away, but being on Echo Lake.........). Pay close attention to that PROP!! I ran the engines for at least 8 hours. On my 13b installation I will use the 84" Ivo Magnum electric prop that I plan to use on the A/C, I think the closer you can duplicate the final setup the better your chances to get it right.
FWIW.
Georges B.
-------Original Message-------
Date: 05/23/05 06:43:31
Subject: [FlyRotary] Re: Technical Advisor
George Graham wrote:
>
>My general advice:
>
> 1. Develop your engine package on the ground. Mine was
>making full power for almost 40 hours before it went onto the
>airplane. Why not do that?
>
I plan to run extensively on the ground at high power... 40 hours?
maybe.. but several tankfuls of fuel at least. For a one-off
installation this seems almost to be a MUST. A ground or "in flight
adjustable" IVO for run-in purposes would be even better, in order to
vary loads on the engine.
> 2. Know what altitude you need to have to turn back, and
>what speed and turn angle to use.
>
This falls under "type training". Chris and I intend to take factory
transition training, and also as a favor from a friend, I may get some
Velocity time in Utah in the near future. Can you guess what I will
practice?
>
> 3. Do your test flights from a long runway which has lots
>of clear ground for emergency landings.
>
>
I will be flying from a former AF base with a runway layout that is
conducive to a turnback (parralel runways, land upwind on the second) .
Both primary runways are 7000 feet long or so. CFR is onsite 24/7.
Tower. No airlines. A couple of "outs" without hitting homes or woods.
I will just say I am blessed with regards to the field
>None of those are new or original ideas, can you imagine
>otherwise?
>
>
>Sarasota Florida
>
>George Graham
>Mazda Rx7ez N4449E
>
It is sage advice, and I am certain it has been written in blood many
times over. I plan to take it.
Dave
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