looking for 337's

[PA1195]

Tim I have FAA approval for a Sensenich 76AK-2-** propeller. Per TCDS 1P2 it's eligible vibration wise at 74" for the C-85 @ 85hp @ 2575 rated, and C-90 @ 90hp @ 2475 rated. Their 74CK model is listed at 72" for the C-85 and 74" for the C-90. But yes the O-200 can use a 75". Unfortunately in my experience with that prop on a couple of C-85's it requires a pitch range of 35 to 38" max to generate rated rpm (2350) which compromises cruise speed a little...but the climb is nice. An O-200 would perform better of course.

I believe Terry Bowden can approve propellers for his STC. I'm not sure what his model and size limits are currently. See Item 8: https://app.box.com/s/qxv8czv5mwjhjjkyeik3gh27d0i4go6e

Edit: Here's a listing of approved propellers. Any deviation would require DER approval. I suspect that's not a major issue for the 76AK-2-** on a Stroker: https://app.box.com/s/rbet4t039rujj5q96bvayhw3qonukxfj

Gary

[astjp2]

Stroker C-85 get us C-90 performance and close to an O-200.

I will forward data relative to the mods above plus some other useful Factory substantiation to Ragwing nut via his e-mail which he sent.

Gary

Gary, you are limited to a 72" prop with the stroker C-85, the O-200 can go all the way to 75" which is a bunch of climb performance.

[Ragwing nut]

Too bad none were O-200’s

o-200 came too late to the party

[PA1195]

Stroker C-85 get us C-90 performance and close to an O-200.

I will forward data relative to the mods above plus some other useful Factory substantiation to Ragwing nut via his e-mail which he sent.

Gary

[astjp2]

Too bad none were O-200’s

[PA1195]

I have a couple pre 10/1/55. One in 1953 for converting N95984 a BCS-12D A65 to a BCS12-85 1351 GW on floats. Wing and engine/fuel system mods following factory instructions. And another in 1950 for N96631 for converting the engine only from an A65 to C85-12F landplane via 337 and adding a Koppers Aeromatic propeller. Includes flight tests for cooling and fuel flow.

Gary

[astjp2]

I went quite a few pages back last night and didn't find it.

Sorry, that one I didnt post for reasons of Terry's STC

[Ragwing nut]

Everything I have posted is here https://vb.taylorcraft.org/forum/tay...ence-documents

I went quite a few pages back last night and didn't find it.

[astjp2]

Everything I have posted is here https://vb.taylorcraft.org/forum/tay...ence-documents

[woodmw]

Tim, or anyone else who might have an idea, how would one search the forum for the referenced document that you referred to?

[astjp2]

There is one to install a c85 that I posted on the forum, no stc needed if you wanted to go that route! Tim

[N96337]

I'm sure I have some, I'll take a look tomorrow.
John

[Ragwing nut]

I am working on a repository for 337's filed before 10/1/55. Any 337 before that date is considered approved data. I plan to make this information available on my new website being constructed. I am not just looking for Taylorcraft 337's, but any 337 prior to that date. If you have any send me a DM and will give you my email to send it to. Thanks!