Grumman V-1710 twin, similar to XF5F ?

[brewerjerry]

Hi
Anyone seen anything info on a Grumman V-1710 twin , something like an inline XF5F ?
cheers
Jerry

 

[Tophe]

I have checked theWhat-if modeller forum with its Search tool, and even there nobody has dared to build or designed a XF5F with inline engines... Sorry. I may try for fun but there, not here (or in the alternate history part). What is your source?

 

[brewerjerry]

Hi
Thanks for the reply & info, sorry I found the reference during a google search into a radial engined P-38 project, but didn't bookmark the page.
I thought here was the best place to post to see if it was a real project or not.
A long nosed V1710 XF5F could look real nice ....
cheers
Jerry

 

[Tophe]

Thanks. I read "Grumman's submission was known by the company as Design 25--a high-altitude fighter powered by a pair of turbosupercharged Allison V-1710 liquid- cooled engines. " at http://www.joebaugher.com/usaf_fighters/p50.html . Is this that one ?

 

[Tophe]

I posted the inline XF5F at http://beyondthesprues.com/Forum/index.php?topic=22.150 before further delirium with asymmetric versions. This is not the Grumman D-25 of 1937 which remains to be shown here.

 

[Tophe]

to be merged with http://www.secretprojects.co.uk/forum/index.php/topic,5248.msg108597.html ?

 

[Stargazer]

G-25 was an older design.

G-25: proposed high-altitude single-seat fighter with two Allison V-1710 engines (1937)
G-34: XF5F-1 Skyrocket (1939).

 

[Tophe]

I found the reference during a google search into a radial engined P-38 project, but didn't bookmark the page.

With such a search, Google directed me to: http://www.secretprojects.co.uk/forum/index.php?topic=8118.0 :

My understanding is that Lockheed proposed the P-38-like Model 24 for the 1937 Navy twin-engine carrier-based airplane competition. The engines were air-cooled R-1535s. Ironically, Grumman proposed a V-1710-powered twin. Neither was accepted.

This matches the 1937 date. The reference to XF5F may have been a misinterpretation.