stunthanger.com
Electric Stunt => Gettin all AMP'ed up! => Topic started by: Ty Marcucci on October 27, 2012, 11:20:29 AM
-
There I was, at 10,000 feet and two Zeros on my tail when all of a sudden my motor takes off and heads for the pits. Missed two planes by a thin margin. Plane did a fancy falling leaf, but landed on the nose at the last five feet. A nameless person, knowing nothing about electric motors, picked it up, held it and tried to turn the prop and stated, "the bearings are frozen". Ha. He knew nothing of out runners.
-
Get a G10 mount from Bob Hunt and use Locktite.
-
Blue Locktite is what I use. I also use blind nuts or self locking nuts, I prefer them to Locktite.
Andy
-
Ty,i
On my SV11, I used a double X mount. I put the second behind the firewall and put the screws through it creating a sandwich effect. I used locking nuts on the back.If your motor is front mounted(after re reading this ,I suspect that it is) the above does not apply,then I think the locktite trick mentioned above is your best bet.Another trick that I have used( when I did not have locktite is a little white glue(not excessive) on the threads. It holds well and breaks free when you need to get it off. It seems to hold up well enough to heat and vibrations for our purposes, at least it has for me.
-
Ty.
Well written, but.........remember the song-- "Three little words".....maintenance, maintenance, maintenance. Electrics do have some vibration.
What we need is miniature safety wire and one A&E personnel in the family.
Regards.
Dave
ama41041
-
It seems a tad excessive to do maintence after only one flight. I use star washers instead of the split ring type. I still find it hard to understand how they all came loose after only one flight. There was no vibration or very little while on the ground. But who knows, once it got in the air, no one holding it to dampen any vibs, it just let loose.
As to the Bob Hunt mount, I have 6 of them and have applied one to my Magnum plus. Hope to get it back in the air soon.
Meanwhile I have taken a break from building planes and am doing a solid scale model of a Gearing class tin can, the USS Newman K. Perry, DD883. My first tin can, not counting the two I was TDY on. . No weight worries here, no fuel, no batteries, just paint it, glue it, put it on the mantle. USS Iowa next. Only this one floats. H^^
The way things are going, you better have some way of raising that Iowa model after it sinks..... HB~>
-
Hello Ty,
Screw crush could have been the cuprit. So could flexibility in the fuse: if the front of the fuse had a natural resonance near the running RPM or the running commutation (cogging) frequency then things will loosen amazingly quickly.
The G-10 plate Hunt sells is a great start, but there is a limit as to how much weight can be saved in the front of an E-Stunter.
Let us know what solves the problem, though.
take care,
Dean
-
Screw crush could have been the culprit.
Sounds like a form of infatuation with base motives.
-
Sounds like a form of infatuation with base motives.
Howard, your killin me ! LL~