C-85 Long engine mount or Short

[AKCrate]

What is everyones thoughts on the two engine mounts Long/Short, pros and cons?

Lets hear what you got!

[3Dreaming]

Re: C-85 Long engine mount or Short

The balance "not weight and balance" of how the airplane flies is better with the short mount from what I've heard. It's harder to get in all the accessories in with the short mount. Tom

[flyguy]

Re: C-85 Long engine mount or Short

I have a short mount 85. If you are not putting in starters and such stuff I think the short is "just long enough," and isn't that the desired size? I would advise against using Eisemann mags with a short mount thought, unless you are just crazy in love with them (like me), or you like to pull engines. They are a tight fit.

Question: Where do people get the cowlings for "long" mounts?
DC

[AKCrate]

Re: C-85 Long engine mount or Short

As far as I know everyone adds a extension to there short cowl.

I run slick mags on one crate and bendix on the other. and its still a tight fit on the short mount.

[VictorBravo]

Re: C-85 Long engine mount or Short

The "short mount" very likely flies better, handles better, etc.

It is a VERY tight fit with Eisemanns, we had to adjust the firewall on my airplane using a sledgehammer. There is not enough room to remove the mag. There is no room to move the engine forward in the short cowling (for more mag clearance), not even 1/4 inch.

I suspect the correct way MECHANICALLY is to put about a 1 inch spacer behind the engine mount pads, and then rivet in a one inch wide extension onto the rear edge of the nose bowl and move the Dzus fasteners.

Unfortunately this would require you to make the necessary adjustments to the paperwork aspect, whether that be a CIA deniable stealth mission, a "minor alteration" from a friendly IA, or an uphill battle with the FSDO.

[wlas]

Re: C-85 Long engine mount or Short

I have a short mount with an 0-200, slick mags and a B&C starter, that after 30 years of hand proping, its is like magic. It is so nice to have my feet on the rudder pedals then the engine starts, after having to jump in and try to get my feet on the pedals before I hit a tree or whatever, because the wind is blowing me into a bank on the river. I guess I am not as fast getting in as I used to be. The short mount works good.

[flyguy]

Re: C-85 Long engine mount or Short

I stand corrected on the starter on a short mount. I did not know one would fit, but then I have never owned a T with a starter, or for that matter, even seen one. Sounds wonderful, but it would probably put mine over gross with full gas. Chuckle.
DC

[astjp2]

Re: C-85 Long engine mount or Short

If you stick with the short mount on an O-200 or 90-14, your engine will move foreward about 5/8", if you have the 85-12, its the same. I have an O-200 converted to a -8 with no accessories, so I hand prop....I am considering installing one with a starter and mounting an oddsey battery on the firewall. The front left baffle needs to be modified to clear the nosebowl with the O-200, I am also running the Aeronca Hanlon Wilson mufflers. I sure love the heat. Most other things will clear once you have the baffling issue cleared up. Your weight and balance will be an issue, I would not want to do stalls with 200# of baggage in the back with the shor mount but it will fly straight and level...Good luck in your decision...Tim

[N95334]

Re: C-85 Long engine mount or Short

How do you tell if you have a short or long engine mount? Why are there two different sizes? What was the purpose?

[Mark Julicher]

Re: C-85 Long engine mount or Short

Starter and generator on the C-85-12 extend farther aft than the magnetos, so the longer mount is needed if you have these accessories.

[cvavon]

Re: C-85 Long engine mount or Short

Dennis I used the short mount on my plane with a starter, alternator. and bendix mags, luscombe exhaust.The starter and alternator are B&C products and are the only one that will fit on a short mount.

[astjp2]

Re: C-85 Long engine mount or Short

The longer mount also affects CG range, you can put more in the back of the baggage with the engine further forward to balance the load. Tim

[Bird]

Re: C-85 Long engine mount or Short

Has anyone tried the swing out engine mount?

[cvavon]

Re: C-85 Long engine mount or Short

Bird i have photos of one that was built by a person in Alaska for big Lycoming but not Continental.

[astjp2]

Re: C-85 Long engine mount or Short

The continental mount is to flimsy, this is not a supercub...

Has anyone tried the swing out engine mount?