RCU Forums - View Single Post - End Grain Balsa Engine Standoff - Making progress
Old 05-18-2009 | 05:58 PM
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branwell
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From: Delaplane, VA
Default End Grain Balsa Engine Standoff - Making progress

Hi,

Idecided to try an end grain balsa standoff for my motor.

The previous standoffs where 2"aluminumlegs, with a 1" foot print each. See pic.

The balsa standoff is 2" tall and has a 3" square foot print.
There is a 1.5" lightening hole through its center.
It's been soaked in thin CA and caped on the motor side with 1/64 aircraft ply.

The Aluminum standoffs weight 3.68oz.
The balsa block weights 2.56oz.

For testing, so far I have put it between twometalplates and jumped up and down on it. Iweigh 250lb plus and in measuring it, there was no compression.

Mounting the motor to the firewall with it, it feels solid and again, no measurable compression.

If I can get the retrofit of the pipes completed this evening,I plan to run up the motor tomorrow and if that goes well, do a short easy going flight, land check it, then a more robust flight working up to high speedgyroscopicswith a 28-10 solid CF Bolly. If that doesn't cause it anygrief, I think it should be good to go.

Branwell
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