WELL ;
I checked Last Night , And the OS H 35 C is the same as the 35S , which is the same as a 30 . As the 35C is the Same as a H-40S ,
the 40S is the same as the 30 & 35S .
The Laters FSR-S ( and non-S ) arnt, whoever , theyre allmost nearly but not quite the same as a ST G-51 . Close Enough to swap .
I wasnt going to pull the 40S outta the MC-72 just to measure the holes .Seems to need a 11 x 5 in that particular aeroplane . More the PLANE does .
In the Mags back in ' the day ' people said the H40-S was the equivilant of a ST 46 , and maybe stronger in the 4 - stroke than the 46 .
Bob Hunts F-`105 Thunderchief ran a 40 S . I think it mayve met its end in a flyaway over tarmac . Something like that , anyway .