Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
Thank you Wurger , thats a pretty impressive memory you have there! .Is there any official site the you can guide me to for confirmation. See attached photos of a DC3 C47 as size reference andAs memory serves, the Hamilton Standard DWG no. 6915A-7 was used for the NA T-28 Trojan or the Grumman S-2 series. It is a post-war prop blade IMHO.
A couple of pics would be helpful as well.
Wow Wurger that's incredibly helpful and makes sense for it to be a T28 Trojan as we have a few in South Africa but highly unlikely to be S2 Tracker (which also has a de-ice boot).Many thanks for your input and assistance.IIRC there has been a such prop blade to ID here on the forum. So I have the blade DWG in my notes written down.The -7 in the DWG number means that the blade is seven inches shorther than the basic design for the blade. So the prop seems to be the 43D50 for the R-1820 engine. The prop assembled with these blades would be 132" diameter then.
PS. you may try to register to the Propeller id. The guys there may be helpful.
The prop of T-28 on left and of the S-2 on right.
View attachment 745435
the source: the net.
Thank you for your input.The T28 used the 43D50 propeller with the standard 50 shaft splines. The S-2/Tracker used the 43D51 propeller, which had different splines for the shaft, as the R-1820 were from a different use previously, I was told the S-2 engine were originally intended for use in tanks, so a different spline with finer teeth similar to the larger 60 spline teeth.