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CMP Sukhoi SU-31 90 69" CG Help

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CMP Sukhoi SU-31 90 69" CG Help

Old 08-20-2008, 07:12 PM
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chase4556
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Default CMP Sukhoi SU-31 90 69" CG Help

Hey guys, I called nitro planes, and they wernt too helpful. This plane is discontinued, and I guess they have no manuals available. Does anyone know the suggested CG for this plane? Or anthing that will get me close to it? Thanks for any help.

Chase


Here is the plane for verification:
http://www.nitroplanes.com/susu9069arfn.html
Old 08-20-2008, 07:18 PM
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nitrostaff1
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

do you have your owner's manual? it says 145 to 150mm from leading edge. give me your email and I'll send you a copy.

John
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Old 08-20-2008, 09:11 PM
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chase4556
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

[email protected]

and no, I've had the plane sitting in its ARF stage for awile(it is since discontinued) and I lost the manual. I called the support number on nitroplanes.com and the guy said they didnt have record of it.


Thanks for the info though, will settle my nerves alot for the maiden flight. Hopefully this weekend!
Old 10-04-2008, 09:43 AM
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jsflysrc
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

My brother is in the same boat. A local hobby shop gave him the model for client loyalty but there is no manual. Does anyone out there have a manual or know where to get one?

Old 10-04-2008, 01:08 PM
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

As with most ARF's start with the C.G. at 25% of the wing chord length at the LE of the wing at the root.

The plane flies fine this way. You can move it slowly back for better response after you've determined how you like to fly it.

CMP planes are similiarly built so you can merely use the manual for a more recent model as a guideline.

Old 11-13-2008, 10:05 PM
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hpelsromantic
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

Sorry to let you in on this little secret on this plane. I have the same plane and put a fpe 2.4 on it to ballance it without adding nose weight. I moved the rudder to the middle to help. The fuse will not support the weight needed on the landing gear. I'll check my manual and check your cg for you. I'm not promising anything but I seem to recall it was somewhere in the neighborhood of 3 3/4 back from the leading edge I remember it being tricky. If I can't find the cg i'll just measure back to my cg lines I had marked on my wing. If you all are interested I have a wing, canopy for it. The firewall is out of the fuse as of last saturday. Beautiful plane though.
Old 11-13-2008, 10:21 PM
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hpelsromantic
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

I did a little checking, here's your manual. http://www.quickworldwide.com/manuals/Sukhoi68.pdf It's really a china model productions product but distributed by giant scale planes. Here's a link to a thread I started when I started my build. http://www.rcuniverse.com/forum/m_49...tm.htm#5945444 Hope this helps. Brent
Old 11-14-2008, 09:36 PM
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nitrostaff1
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Default RE: CMP Sukhoi SU-31 90 69" CG Help

http://www.quickworldwide.com/manuals/Sukhoi68.pdf

John
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Old 12-07-2009, 12:16 PM
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justmeme
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Default RE: CMP Sukhoi SU-31 90 69

I have just bought cmpro sukhoi today from a member still in box the CG is 145-150 mm from the leading edge,will put DL 30 in it
Old 02-27-2016, 03:01 PM
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samuel_holland
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Default

I just got one of these cmp sukhoi su-31 without instructions does anyone have a link or photocopy

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