Hamilton Standard Propeller ID Please

[Skyboy]

Could someone please assist me in identifying a Hamilton Standard Propeller blade with ID 6915A-7 ?Im assuming its late WW2?
Many thanks

 

[Wurger]

As 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.

 

[Skyboy]

As 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.

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 and

 

[Wurger]

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.

the source: the net.

 

[Michael Hope]

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.

 

[Skyboy]

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.

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.

 

[Wurger]

Glad I could help a little bit.

 

[Wurger]

BTW .. Also I found that ... Grumman C-1 Trader ... the DWG 6915A-7 prop blades for the prop there.

the source: Photos and video: Grumman C-1 Trader flying in the Duluth Airshow

 

[Skyboy]

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.

Thank you for your input.