![enginehistory.org Forum Index](templates/subSilver/images/logo_phpBB.gif) |
enginehistory.org Aircraft Engine Historical Society Members' Bulletin Board
|
View previous topic :: View next topic |
Author |
Message |
ghufstader
Joined: 14 Apr 2011 Posts: 4
|
Posted: Tue Apr 19, 2011 08:17 Post subject: Curtiss Wright R-3350 Propeller Shaft drawing or SAE #60 |
|
|
I need to replicate the SAE #60 spline on a Curtiss Wright R-3350 Propeller Shaft.
Does anyone have a drawing of that shaft or have detailed dimensions/material/heat treat used?
I have seen a poor copy of AN-9506 (from the AEHS discussion board) which has some SAE #60, but it is not readable in the current condition.
Also, if anyone has a recommended machine shop that can cut an SAE #60 spline, I would appreciate that lead as well.
Thank you,
Brian Rodgers
Texas
CAF Devil Dog Squadron |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
rkammlott
Joined: 26 Jul 2004 Posts: 47 Location: Teaneck NJ
|
Posted: Wed Apr 20, 2011 06:05 Post subject: |
|
|
i have to ask. what are you building? you could probably find a beat nose case cheap with the splines your looking for . post a wanted ad on barnstormers. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
ghufstader
Joined: 14 Apr 2011 Posts: 4
|
Posted: Thu Apr 21, 2011 06:44 Post subject: more shaft info |
|
|
Yes, after review of post #1, I could have added a bit more detail.
I work for the Texas A&M Wind Tunnel in College Station, Texas.
We currently have a 2500 Hp electric motor turning a cut-down (13.5 ft) 4-bladed (B-29 blades) Hamilton Standard hub with a Curtiss Electric Pitch Control Motor. Yes, my understanding is that there was a bit of modification to do that mating. The motor connects to the hub via TWO R-3350 Propeller Shafts mated back-to-back with the motor-side one modified by having its nut thread area removed.
A 3000 Hp upgrade is going to be happening soon and I was tasked with making a custom shaft to eliminate the need of two more R-3350 prop shafts. Since the shaft must mate with the SAE #60 splined hub, I need to know the spline info. Hard to find that !!
BTW, if anyone can help find another Curtiss Electric Pitch Control motor assembly, we would like to puchase a spare !! Those are equally hard to come by and I am also searching for that assembly's drawings if a custom armature has to be made at some point in the future.
The Tunnel can currently generate a 200mph breeze and the goal is to approach 250mph with the new motor.
Brian Rodgers |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
ghufstader
Joined: 14 Apr 2011 Posts: 4
|
Posted: Mon Jul 04, 2011 15:33 Post subject: final result |
|
|
Regarding my search, I was finally able to find a drawing of the Wright R-3350 propeller shaft in the collection at Wright State University (Ohio). After signing a standard usage agreement (can't use it on a flying aircraft), I was sent a .pdf and .tif of the drawing. The drawing was in bad shape, but most of the information was readable; at least the bits that I needed. The SAE #60 dimensions were there, however, not enough so that one could machine such just with that drawing. I found a local spline-cutting machine shop that had some CNC cutting machines and was pleased to know that "SAE 60" was a spline type found in their gear software! So, all I had to do was tell them where to start/stop the spline. Their software calculated the involute gear tooth form.
Brian |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
kmccutcheon
![](images/avatars/373.jpg)
Joined: 13 Jul 2003 Posts: 298 Location: Huntsville, Alabama USA
|
Posted: Tue Jul 05, 2011 05:24 Post subject: |
|
|
Great news, Brian.
I saw the Wright State collection about three years ago; at that time they had no idea what they had. It is good to know that enough work has been done to allow location of a drawing.
Lucky break on the CNC software also! _________________ Kimble D. McCutcheon |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|