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Old 05-27-2017, 05:27 AM   #76
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Originally Posted by jmorgan View Post
Hey your thread makes me feel the jealousy as well! Hell I wish I had a plane Jane S1C.


I once had one. It was one of the high points of my life.
No regrets. Happy to have had the experience.

I very much enjoy these threads and find myself feeling very happy for the pilots/owners of these fine airplanes.

Jack


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Old 05-27-2017, 03:18 PM   #77
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Well I'm not exactly sure how much the pilot is pushed back I never measured it. I just used the old frame as a pattern. The wings are moved forward also. I really think the mount is where it is at because at the time you could only get a rear mounted prop governor. I think Curtis just pulled the engine back as far as he could and not have to put a hole in the firewall. Then when the certified T's came out they spec'd a front mounted governor more like what a -540 has. So I would imagine factory T's have a shorter mount. But that just using logic and a few pictures of factory T's I don't know that for sure. If someone has a factory T it would be interesting to compare the parting line on the accessory case to the top wing...... John O....???

I'm headed out to the hangar in a bit to work on my wings and will take a quick measurement of the mount. But what your saying about the 3 or so Homestead Ts and factory Ts is what I understood to be correct. I don't think the seat was pushed back in the T, but I do believe the seat back has a couple degrees of recline in it vs an S. I owned a facorty S before the T and this one is a lot more comforatable to fly. There are a bunch of tiny little refinements in the T that make it my favorite model, but I'm biased!

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Old 05-27-2017, 03:43 PM   #78
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Ok I measured my T engine mount and it's 9 inches from firewall to the mount pads. I knew it was shorter but 3 full inches is a lot! No wonder Tony was able to put that sleek cowling on his!

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Old 05-27-2017, 07:46 PM   #79
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So the factory T's mount is back to where an S mount it. I wonder where the wings are then?

I measured the homestead fuse and the top ladder is the same as an S. So the upper cross bar in at your shoulders is 53.5" from the firewall. But the lower wings are moved forward quite a bit so that changed the whole bottom truss.
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Old 05-27-2017, 08:05 PM   #80
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That is a "perfect Pitts" to me. Outstanding!
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Old 05-27-2017, 08:11 PM   #81
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Tony,

The location of the seat back tube on both airplanes is 53.5" aft of the firewall according to the drawings I have. I'll check the recline angle and post what I find S vs T-proto vs T-factory.
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Old 05-27-2017, 11:22 PM   #82
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Turns out the S-1T prototype drawing I have does not show the seat. The S-1T and S-1S seats are different. The seat bottom on the T is about 3.5" longer so the forward edge is closer to the firewall. The seat back angle is very close to the same but the angle of the seat back to the seat bottom on the T is 99 compared to 95 on the S and as a result the T's seat back is shorter such that the aft end is a little higher than the S seat. Below is an overlay of the two designs, cleaned up as best I could so the differences are visible. The S-1S is in red.

Click image for larger version

Name:	S-1S & S-1T Seat Comparison.jpg
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Old 05-28-2017, 01:05 AM   #83
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That is a "perfect Pitts" to me. Outstanding!
With due respect, compared to anything else, ANY Pitts is perfect.

But I agree this one seems kinda Special

Jack
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Old 05-28-2017, 02:52 AM   #84
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OK I think we need some more dimensions. An S1S came to the shop today of a very similar vintage (Pitts Aviation '75). I will have to do a little comparison research. The cockpit on the T sure feels a lot bigger. A lot of the feel might be coming from the 4" wider instrument panel. Plus the bottom of the seat is quite a bit wider than the S1S.
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Old 05-28-2017, 03:36 AM   #85
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Besides what's mentioned above, some of the extra cockpit room is achieved by the removal of the leftover cockpit coaming along with the attached 4130 cockpit opening reinforcement tube above the canopy rails.


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