I have a couple of Poulan chainsaw engines that I want to convert. A 42cc and a couple of 34cc. Both would need a rail type mounting system. What have you guys used and where can I get it?

Thanks
Jim

Use hanger 9 aluminum mounts.

Hangar 9 part no.HAN2033


Waldo
Waco Brotherhood #22

That mount looks just like the one that came with my Hanger 9 P-40. Is it the same? Seems kind of small but if you guys have used it then I will have to consider it.

Thanks
Jim

I think this is what I have my 46cc mounted on http://www3.towerhobbies.com/cgi-bin...?&I=LXD630&P=7

Anyone have any pix of one of these engines mounted?

Jim

There are two ways to do it. Unfortunately I don't have access to a photo of how I did mine at the moment.

One, you can make aluminum plates that bolt to the four screws that hold the crankcase together. These plates then extend out sideways far enough to be mounted to a beam type mount just like a normal glow engine install. The only problem with this method, other than making the mount plates, is that it makes the overall engine mounting very wide and won't fit some firewalls.

The other way is to mount the engine directly to the beam mounts, using spacers on top of the beams to raise the engine up so that the bottom rounded part of the crankcase clears the beams. You use those same four crankcase bolts, but they go through the beam mount, then through spacers, then into the engine. This is how I mounted mine and it worked fine for many flights. (I finally gave the engine to my brother for a project plane of his.)

Hope this makes sense. If I had access to my pics it would be clear. []

AV8TOR

Hey, I found my pic in an earlier post here in the forum. Here it is. I used a plastic beam mount and had no problems, but I think a metal style beam mount would be better. I don't think the metal ones weigh any more than the plastic ones. I weighed the plastic ones once and was surprised at how heavy they are!

(Note that the spacers could be slightly shorter than shown here. They only need to be long enough to allow the bottom of the crankcase to clear the mounts. The spacers used were cut down from the spacers used in the chainsaw.)

AV8TOR

Thanks.

I would never have thought that one of the glass filled engine mounts would be stout enough to handle the vibration. I probably have a couple of them laying around the shop. Thanks for the info.

Jim

I had many, many flights on that setup without one problem. I figured if those mounts were good enough for "fire-breathing" OS 120's, and 160's, Saito 30cc four strokes, YS engines, etc., that they would work for my Poulan, and they did.

There is probably more of a chance of the metal mounts breaking due to a casting flaw than these plastic mounts giving problems, but you do whatever you think is safe. As I said, I had no problems.

Take care,
AV8TOR

On the Poulan 46 you dont need the spacers because the engine has flanges that can bolt on the aluminium Hangar 9 beam mounts.


Waldo
Waco Brotherhood #22