Backcountry Pilot • Stinson STOL modifications?

Stinson STOL modifications?

Have you modified your aircraft? STC? STOL Kit? Major rebuild from just a data plate?
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Re: Stinson STOL modifications?

RDUStinson wrote:Probably true, but there's little reason to be. The Franklin's a fine engine if properly overhauled and maintained, and most engine parts can be had. The tough item is the crank, but even those can be had with persistence. There are several folks offering reliable overhauls.
The key questions on the engine would be who overhauled it, and when. If not done by a reputable builder, I'd approach with great caution.

Metallized wings or fuse on a Stinson are generally considered undesirable for several reasons, incuding weight and difficulty in inspecting the internals of the wing which can suffer intergranular corrosion.

The airframe is fully supported by Univair (the TC holder)- you can buy about any part you need brand new. Perhaps the best thing about the Stinson is that there are several very active user groups including the International Stinson Club (full disclosure- I'm a club officer) and a Yahoo group.

If you're interested in the Stinson and there's anything I can do to help, please let me know. You've probably noticed that there are several proud Stinson owners here...

-Bill


That's pretty much everything I've learned in this last year learning and shopping for Pacers and Stinsons. When I look at a Stinson I want at least a 165HC, lower and more recent overhaul the better. I like when spare parts come with the deal. Most folks that try to steer me away from Stinsons is simply due to support for Franklins, but it does seem that it's not that bad really...yet. I figure a 165 Stinson will perform pretty equal to a 150hp Pacer where I live so big deal. As for the metalization I'm not really a fan, but if only the wings were metalized I'd still be interested I guess....I mean I have plans to build a bearhawk in the next few decades and it's got metal wings..haha.

It seems that in the past year the average stinson is in the low 20s and the average Pacer is in the 25's. So not a huge difference in price.
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Re: Stinson STOL modifications?

porterjet wrote:So, if a person was to see an ad for a low time 108-3 with less than 400 SMOH on a 165 and prop, no damage history, old radios, Scott 3200, metal winged nice looking Stinson what would you expect to pay....? I know, its subjective and needs a pre-buy, but assuming nothing big is found what are they going for these days?

A machine like that would list in Bend, OR for about 19k with Barnstormers. :wink:

Wish I was shopping now. Mama says not 'til I can pay cash. :cry: Looks like a good deal to me.
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Re: Stinson STOL modifications?

Vick wrote:.......Pull the yolk all the way aft to the stop with the flaps up and hold it there. Then select the first notch of flaps and you should find that you have ~maybe~ another half inch of travel in the yolk available. .....


That's what I did, and detected no difference in elevator travel.. This particular Stinson is a pretty rough old specimen, I wonder if after 60 or so years the doodad on either the elevator push-pull tube or on the flap handle has broken off?
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Re: Stinson STOL modifications?

mepps1 wrote:
porterjet wrote:So, if a person was to see an ad for a low time 108-3 with less than 400 SMOH on a 165 and prop, no damage history, old radios, Scott 3200, metal winged nice looking Stinson what would you expect to pay....? I know, its subjective and needs a pre-buy, but assuming nothing big is found what are they going for these days?

A machine like that would list in Bend, OR for about 19k with Barnstormers. :wink:

Wish I was shopping now. Mama says not 'til I can pay cash. :cry: Looks like a good deal to me.


lol, that's the one. I'm afraid I'm in the same boat as you. Being overseas doesn't help either. I'm afraid that by the time I come home for good prices will have rebounded and it will still be out of reach.
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Re: Stinson STOL modifications?

porterjet wrote: I'm afraid that by the time I come home for good prices will have rebounded and it will still be out of reach.


My completely amateur guess is that it will be a while before values increase substantially across the board, even longer if fuel costs remain high or go higher. They say that fuel is the cheapest thing you'll have to put in your plane, but in the short few years it's been since I bought my Stinson my hourly fuel cost has more than doubled (largely due to ethanol in mogas forcing me to 100LL). If flying is a strictly recreational proposition, as it is for many here, I would think that the ever increasing operational budget will gain significance as a barrier to entry.
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Re: Stinson STOL modifications?

porterjet wrote:
lol, that's the one. I'm afraid I'm in the same boat as you. Being overseas doesn't help either. I'm afraid that by the time I come home for good prices will have rebounded and it will still be out of reach.


I think the good news for airplane buyers is going to last a while. I'm personally convinced that the other shoe has yet to drop as far as the economy is concerned. Even if things stay stable, I sure can't see a lot of good times coming for a while. I wonder how much planes will cost in Monopoly money. ? :shock: ?

It kind of makes me cringe some when you know some of the sellers have a lot more into the plane than what the asking price reflects. I sure can't see buying a fixer right now when you see the price on a perfectly clean Stinson or Pacer. Still kind of baffles me that that pretty red Stinson hasn't sold.
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Re: Stinson STOL modifications?

Posts about alcohol in mogas split to Removing alcohol from auto fuel.
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Re: Stinson STOL modifications?

1SeventyZ wrote:Posts about alcohol in mogas split to Removing alcohol from auto fuel.


Sure, just show off your power! :twisted:
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Re: Stinson STOL modifications?

Vick wrote:
hotrod150 wrote: So you're saying that the flaps are linked to the elevator controls, to disable full "up" elevator unless the flaps are deployed? I'm definitely no Stinson authority, but this is definitely the first time I've ever heard that.
Eric


It's actually a very simple interface. The elevator torque runs just below the flap handle. There is a lip on the torque tube. When the flaps are up (flap handle flat on the floor) the lip on the torque tube runs into a limiter on the bottom of the flap mechanism when the yolk is pulled full aft. When the flaps are deployed the limiter rotates out of the way and torque tube travel is uninhibited, allowing for full up elevator deflection.


Every 108 series is that way. If it's not, it's not a legal plane.(I've come across more than one that someone had removed) Elevator travel is specified as such: Elevator (flaps up) 16.5 to 17.5 degrees up, 19.5 to 20.5 degrees down, (flaps down) 25 to 26 degees up, 19.5 to 20.5 degrees down.
Here's a few pics of the really simple "catch" that's built on the bottom of the flap handle, that engages the stop on the elevator push-pull tube.

Flaps up, elevator neutral:

Image

Flaps up, elevator up:

Image

Flaps down, elevator up:

Image
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Re: Stinson STOL modifications?

Excellent photo's showing the elevator-limiting feature! That stop on the elevator tube looks to be a bolt-on/clamp-on arangement- I notice the clamping bolt is gone in the photo. I'll bet someone removed it on my friends 108-3. The airplane's not flying now, but if and when he gets poking around down there in the process of getting it airworthy again we'll have to check it out.
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Re: Stinson STOL modifications?

Saw this photo on AvWeb.com today and thought of you guys:

Image
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Re: Stinson STOL modifications?

Z- NICE!!
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