40 bl65 engine mount question

[jack clifton]

I am wondering if anyone has info on engine mount details for the lycoming.
I have ordered the airframe parts manual , but wondered if anyone with one of these knows if there is any rubber bushing between the mount and the engine, my project has the engine directly bolted to the mount. This is strange, but it looks like it has been this way, any info would be apreciated.
Jack 1940 bl50-65

[Guest]

Re: 40 bl65 engine mount question

I am wondering if anyone has info on engine mount details for the lycoming.
I have ordered the airframe parts manual , but wondered if anyone with one of these knows if there is any rubber bushing between the mount and the engine, my project has the engine directly bolted to the mount. This is strange, but it looks like it has been this way, any info would be apreciated.
Jack 1940 bl50-65

Hi Jack,

My '39 BL-65, converted from a BL-50, had a rubber bushing (looked like a washer about 1" dia. and 1/4" to 3/8" thick) between the mount & engine.

Ironically I recall it also had thin rubber washers between the mount and the fuselage.

Dave

[3Dreaming]

Re: 40 bl65 engine mount question

There should be a rubber washer between the engine and the mount, and on the top side of the engine lug. Then a large area steel washer. There should also be a rubber tube or plastic type sleeve around the bolt where it goes through the engine lug. I don't think there should be anything between the mount and airframe. Tom

[Forrest Barber]

Re: 40 bl65 engine mount question

original rubber between mount & fuselage was a bad idea, bolt that solid. Other is correct

[Hank Jarrett]

Re: 40 bl65 engine mount question

Forrest, is the rubber between the mount and fuselage bad on all Taylorcrafts or was that a Lyc or 39 problem? I had metal spacer washers between the fuselage and mount of both of my planes. Is that OK?
Hank

[Winston L.]

Re: 40 bl65 engine mount question

Forrest is far more knowledgable than me but I would say that it isn't correct.

Winston

[Chet Peek]

Re: 40 bl65 engine mount question

Forrest, I seem to rember a Micarta shim about 1/4 " thick and perhaps 1X2 inches in between the motor and the mount on the O-145 Lyc. Am I dreaming or was that used?
Chet Peek

[jack clifton]

Re: 40 bl65 engine mount question

It looks like the house is devided for now, but, thanks guys, I can see by being in this group, there is help available. I will apreciate anyone who has any more info on this, it will be a few weeks till I am ready to fire this one up, at least, and maybee a few months , I am going after her tomarrow. I have looked at everything last week, just did not have the trailer with me to pick her up, thanks, Jack

[Guest]

Re: 40 bl65 engine mount question

original rubber between mount & fuselage was a bad idea, bolt that solid. Other is correct

Hi Forrest,

Was the rubber between the mount and fuselage a factory installation or something that a previous owner may have put in?

I am 99% sure mine had it just not sure how it got there.

Thanks, Dave.

[Forrest Barber]

Re: 40 bl65 engine mount question

In the beginning, (hmmm that has a familiar ring), the first Model A's had only the rear mount bolts going back into a threaded insert that was placed into the fuselage. Seemed they had to remove them about every 200 hrs for work on engine, this quickly evolved into a bolt with nut on the outside like we do today! I do not recall any A with rubber there. I do recall other types of shims on different ships but nothing by the factory. Then I recall square rubber mounts between the engine & mount of the Franklin or Lycoming. Next week I will check the drawings and see what they say!