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Author Topic: Profile motor mounts  (Read 1620 times)

Offline Leester

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Profile motor mounts
« on: July 27, 2008, 08:00:07 AM »
Can you guys that have'em show how you mount the motors in profiles. What about cowl cheeks, yes-no ?? Size of nose doublers, all the different stuff you'd do from a glow set up. Thanks
Leester
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Offline John Cralley

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Re: Profile motor mounts
« Reply #1 on: July 27, 2008, 08:39:54 AM »
Lee,

Here is how I do it on my profile Ringmasters. I place a vertical rock hard maple mount at the front of the fuselage. This mount has been drilled and a pair of blind nuts have been installed for 4-40 screws. I then fabricate a plywood X mount to receive the aluminum X mount of my outrunner motor. The plywood X mount is attached to the maple motor mount rail with two 4-40 screws and the motor is attached to the plywood X mount with four appropriate sized screws. No cowl cheeks. Doublers are 1/16" plywood.



John Cralley
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Offline Leester

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Re: Profile motor mounts
« Reply #2 on: July 27, 2008, 09:05:03 AM »
Thanks John thats a cool way of doing it. How about a pic with everything in place, this really helps out.
Leester
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Alan Hahn

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Re: Profile motor mounts
« Reply #3 on: July 27, 2008, 01:51:18 PM »
Lee,
If you look at my Super CLown review, you can see the other way to mount, using the nose ring of the plane. I'm not sure if there is an advantage for either mounting scheme---both seem to work. Just important to make sure the mount stays in place!

Offline John Cralley

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Re: Profile motor mounts
« Reply #4 on: July 27, 2008, 04:53:57 PM »
Lee,

Here are a couple of shots. The plywood X motor mount is painted black. The timer is mounted inboard and the ESC outboard. The battery is partially buried in the wing.

John Cralley
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Central Illinois

Offline Mike Anderson

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Re: Profile motor mounts
« Reply #5 on: July 28, 2008, 12:24:08 PM »
This thread reminded me of a question I meant to ask a while ago --

Does anyone know anything about the mount in this post:

http://stunthanger.com/smf/index.php?topic=7006.msg58395#msg58395

Appears to be a machined aluminum unit that allows you to beam-mount the motor.

Mike@   AMA 10086
Central Iowa

Alan Hahn

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Re: Profile motor mounts
« Reply #6 on: July 28, 2008, 12:55:03 PM »
This thread reminded me of a question I meant to ask a while ago --

http://stunthanger.com/smf/index.php?topic=7006.msg58395#msg58395

Appears to be a machined aluminum unit that allows you to beam-mount the motor.




Mike,
I'd give Ron an e-mail and see if he will provide some more details about that mount. I thought it was pretty neat at the time too. Plus it certainly meets all definitions of a profile front end I think---something nose rings etc are a little iffy on.
Does anyone know anything about the mount in this post:

Offline Leester

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Re: Profile motor mounts
« Reply #7 on: July 28, 2008, 12:55:41 PM »
Heck send Ron King a Personel message or a email and ask him. Then let us know  VD~ VD~
Leester
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Offline Crist Rigotti

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Re: Profile motor mounts
« Reply #8 on: July 28, 2008, 01:19:04 PM »
I think Jim Ehlen in Minnesota makes those aluminum mounts.
Crist
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Offline Leester

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Re: Profile motor mounts
« Reply #9 on: July 28, 2008, 01:24:04 PM »
Hey Crist, do you have any contact info on him ?? He's not listed in PAMPA.
Leester
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Offline Crist Rigotti

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Re: Profile motor mounts
« Reply #10 on: July 28, 2008, 03:11:40 PM »
He's in the members list of this Forum.

jpe50@comcast.net
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Offline Crist Rigotti

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Re: Profile motor mounts
« Reply #11 on: July 28, 2008, 03:13:13 PM »
He is a member of this Forum.  Search the members list.

jpe50@comcast.net
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Offline Rudy Taube

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Re: Profile motor mounts
« Reply #12 on: July 28, 2008, 04:28:13 PM »
Crist is correct. Jim makes these beautiful mounts. He used to make them in batches when he received enough orders. I bought two from him a few years ago, and I am still using one in my ECL P-40.

Maybe if enough guys want one he may tool up for another run? They are well worth the $. He made them to bolt into the mount holes of an OS .40 with the E part setup for the standard E motor bolt pattern for our ECL size motors, (ex. AXI 2826-10).

He makes them to very close tolerances. If you get one, you may want to open up the curved part to give you a little more tolerance around your motor. If you mount it "FORWARD" you won't have a problem, but if you mount it "RERWARD" you will have to open the clearance because our motors move up and down more than 1/16" each way when mounted at the rear. If I build anymore CL planes, the motor will be mounted in the front to solve this issue. It is easier on the motor bearings too.

His beautiful aluminum mount is also perfect for nonprofile installations. It will allow you to use the standard MMs. BTW, Jim builds beautiful ECL planes too. :-)

« Last Edit: July 28, 2008, 04:52:24 PM by Rudy Taube »
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Offline Rudy Taube

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Re: Profile motor mounts
« Reply #13 on: July 28, 2008, 04:50:50 PM »
I like John's mount. It is KIS, Sano, light, inexpensive, and looks cool.  #^

With a small mod, it could also be used on an already built profile (a conversion, ARC/ARF, etc.) with a "FORWARD" mount using the existing hardwood MMs already in the plane. Here is a photo that may help:

Rudy
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Offline Leester

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Re: Profile motor mounts
« Reply #14 on: July 29, 2008, 03:44:10 PM »
Hey thanks for all the input. I'm trying my hand at a conversion of my Baka Bomb that had an FP 20 in it. I'm using ideas from this post and have the motor installed temperarilly. I'll work on the rest as time permits. Thanks again
Leester
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Alan Hahn

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Re: Profile motor mounts
« Reply #15 on: July 29, 2008, 05:56:13 PM »
Here is how I recently mounted my Scorpion 3014 onto the SuperClown--which originally had the Brodak stock motor on it. I simply added (epoxied) a 3rd plywood plate to the front which had holes drilled for the front of the Scorpion motor (similar to the original Brodak mounting method).

Offline Dennis Toth

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Re: Profile motor mounts
« Reply #16 on: July 30, 2008, 10:49:50 AM »
Guys,

I have used a front mount on two installations with beam mounts. Basically, I've built it from 1/4" lite ply so that it fits between the mounts with a half circle above the mounts that sits on them. I use two brass "L" clips that I bolt to the ply and to the mount. The ply is drilled to accept the motor bolt pattern with the shaft hole large enough to get the drive washer through without taking it off the motor shaft. I also drill cooling 1/4" holes to match the cooling areas of the motor. Once finished I apply two coats of CA to the ply to harden all the surfaces. After the CA kicks off I bolt the motor on and mount to the ship. This mount has worked well for two installations only mod was the addition of two 1/4"x 1/4" hard balsa cross strips at the bottom of the mounts to anchor the bottom of the ply from moving but still provide a give point on a hard bum.

Best,       Dennis


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