Espritmodel.com Telemetry Radio
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Old Jun 30, 2014, 10:01 AM
FastEddie123
United States, MN, Lake Elmo
Joined Nov 2013
251 Posts
Quote:
Originally Posted by got-one View Post
Am starting to see (feel) some heating problems with my econversion Windfree. The battery is coming back warm to hot.

I am wondering how you are routing cooling air in your econversions, scoops and where, holes and where?

Thanks,
Dave F
>< *>
I use a turbo spinner and an exit hole behind the wing on top of the fusalage . e123
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Old Jun 30, 2014, 11:44 AM
Old Bold Pilot
got-one's Avatar
USA, MI, Rochester
Joined Nov 2008
635 Posts
Thanks fasteddie. That's a future option.
Dave F
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Old Jul 14, 2014, 10:37 AM
FastEddie123
United States, MN, Lake Elmo
Joined Nov 2013
251 Posts
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Originally Posted by fasteddie123 View Post
I use a turbo spinner and an exit hole behind the wing on top of the fusalage . e123
PS I just got a new radio with Telemetry... I run a 960kv SK GliderDrive motor on 3s 65c battery 1800 lipo, a 12x6 folder & turbo spinner, 4 lb sailplane, using 3/4 of a plastic spoon revere vent... on top of fuselage/wing. It runs between 100 to 130 f on the motor with 1 minute max motor runs, in 65 to 85 degree ambients .. (so far) . e123

PS It climbs like crazy ...
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Old Jul 18, 2014, 03:44 PM
FastEddie123
United States, MN, Lake Elmo
Joined Nov 2013
251 Posts
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Originally Posted by wingloada View Post
A couple of years ago I built an electric fuselage for my 1989-built Sagitta 600. This was my first build after several decades and I learned about the new motors and batteries through this project. She's a good flier and lots of fun since there's no need for a HiStart.
Nice bird.. ed
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Old Jul 19, 2014, 08:23 PM
Out of helis, sanity returning
Tallahassee, FL
Joined Feb 2009
1,955 Posts
Quote:
Originally Posted by fasteddie123 View Post
What do you expect the flying weight to be? e123
Regarding the electrified Oly IIS, the flying weight is 1420 grams. i don't know how that compares to other builds of the same type, but it flies beautifully. Here's a video of flight:

Rick's Home Built Motor Glider 1 of 3 (3 min 43 sec)


I wasn't trying for thermals, just making passes for the camera. The maiden flight itself resulted in a 30 minute thermal ride on the first motor run; I finally brought it down because my neck was getting tired. It was supposed to be a short test hop, but what are you gonna do when you hook a nice thermal at 75' and can't resist seeing how high you can milk it?

At any rate, it's a fine flyer, and I can recommend doing the build to anyone who has the patience for such things.
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