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trouble with Hangar 9 Arrow ARF

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trouble with Hangar 9 Arrow ARF

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Old 05-16-2004 | 09:54 PM
  #1  
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Default trouble with Hangar 9 Arrow ARF

I've had very few problems in general with assembling this aircraft, until it came time to mount the motor. The kit calls for an "Evolution Power System" but I initially chose to use an old OS .40FP from my previous trainer (may it rest in pieces). Quickly discovered two things: (1) the motor mount provided with the kit is too wide to mount this motor; and (2) the prop shaft on the OS was apparently bent a little by the crash. OK, so I'm thinking, no big deal...the hobby shop has an OS .40 LA for $60, so i pick it up. Same problem with the rails being too far apart and the pre-drilled holes on the mount being nowhere close to the spacing on the motor itself (holes too far apart front to back on the mount, even if the rails WERE close enough together for it to matter, which they ain't). Now, the motor mount is an aluminum thing, and the firewall is pre-drilled for that particular mount. I have the old nylon mount but it seems too short (meaning, if I mount it to the firewall, the plane of the prop disc would be slicing off the front of the fuse). Is there something I'm missing here? I looked at pictures of the Evolution motor and it looks like the mounting flange is set up pretty much like the one on the OS (meaning roughly similar spacing and width of the motor flange). Is there some sort of adapter to make the OS motor work with the provided mount or am I bound to make another run to the shop to buy something that will fit?

BTW, other than this problem, the kit looks to be very complete and well-made. Can't wait to fly it!

TIA for your help!

David
Old 05-16-2004 | 10:14 PM
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From: Mobile, AL
Default RE: trouble with Hangar 9 Arrow ARF

If you can't get an evolution engine, punch out the blind nuts holding the motor mount and use a spacer block of hardwood and remount the engine.

You will love the way the plane flys....enjoy

Jerry
Old 05-17-2004 | 09:26 PM
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Default RE: trouble with Hangar 9 Arrow ARF

Called Hangar 9 tech support today and they said the motor doesn't bolt onto the mount....it's simply "strapped on" using the supplied metal straps that get tightened down over the motor flange. Weird. I would have thought this would be prone to vibration issues. Anybody else done it this way before? Problems?

Dave

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