Revolution Pro Engine Mounting

[Rcmaster199 at aol.com]

The Rev Pro Gary is flying came in at 9# 14. In reality the main maneuver  
the plane has trouble with is the Snapping Humpty. The rest of the schedule  
seems to be okay, but Gary doesn't really like the power authority.
 
 On the other hand he's just too lazy to break out his DZ
 
Hi Matt,

You probably mentioned this, but at what  weight wasn't the "L" enough ponies 
for today's schedule? 
just curious,
    Dean
 
Dean Pappas 
Sr. Design Engineer 
Kodeos Communications 
111 Corporate Blvd. 
South Plainfield, N.J. 07080 
(908) 222-7817 phone 
(908) 222-2392 fax 
d.pappas at kodeos.com  
-----Original Message-----
From:  discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On  
Behalf Of Rcmaster199 at aol.com
Sent: Friday, October 15, 2004  3:02 PM
To: discussion at nsrca.org
Subject: Revolution Pro  Engine Mounting



Hi Dean, the Rev Pro's engine mounting is quite similar to what you  
described on Dr J. The early beams in the Rev Pro were fiberglass and  vibration would 
loosen the engine bolts all the time. The fix was to epoxy  the bolts in 
place which is what gary Kirby did on his.
 
The better fix was to use aluminum beams which is exactly what Andreas  Gietz 
went to on mine. Blue loctite secures them well.
 
As far as isolation, the rear of the beams are secured through a set of  
fairly large (about 1"od) grommets (like servo grommets just bigger). The  grommet 
is installed onto the firewall, and a through bolt secures the  beam's back 
end (from inside the fuse). The front of the beams are secured  with lords. 
Early Rev Pro's used a 3/8" Lord mounts but my kit has 5/8". The  rear end of the 
beams does not seem to be as affected as the Lord mounting  you used on the 
Dr J
 
Isolation with this rig is pretty good on the YS 140L that Gary is  running. 
Gary and I added an extra ring at the nose, mounted vertically, and  Gary has 
had no problems. I haven't flown mine yet but it's getting close.  Weba 160 on 
mine. And BTW, the L isn't enough power for the present F3A  schedules, but 
is fine for the masters schedules.
 
Matt





 
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