Warbird Information Exchange

Hello folks:

Does anyone know the weight of the Jacobs R-755? Couldn't find the info anywhere.

Thanks

_________________
"No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth!" R.R.

Welcome to the USSA! One Nanny State Under the Messiah, Indivisible with Tyranny, Higher Taxes, Socialism, Radical Environmentalism and a Loss of Income for all. Boy I'm proud to be a part of the USSA, what can I do to raise taxes, oh boy oh boy!

About 450lbs with the carb, sparkplugs, generator and control box, ignition wires, prop centering cones and nut and oil strainer.

_________________
President National Waco Club
Curator for the Waco Historical Society Air Museum
Writer for VINTAGE AIRPLANE, SKYWAYS, BARNSTORMERS.COM EFLYER

Thanks Waco YKC.

_________________
"No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth!" R.R.

Welcome to the USSA! One Nanny State Under the Messiah, Indivisible with Tyranny, Higher Taxes, Socialism, Radical Environmentalism and a Loss of Income for all. Boy I'm proud to be a part of the USSA, what can I do to raise taxes, oh boy oh boy!

What's the diameter?

_________________
"No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth!" R.R.

Welcome to the USSA! One Nanny State Under the Messiah, Indivisible with Tyranny, Higher Taxes, Socialism, Radical Environmentalism and a Loss of Income for all. Boy I'm proud to be a part of the USSA, what can I do to raise taxes, oh boy oh boy!

Hi A2C,

I am refering to Jacobs installation diagram for L4MB (same as R-755-9), diameter is 43 1/2", length is 41 15/32', mounting ring PC 16 1/2" (8 x 25/64" dia holes), C of G 5 1/8" fwd of mounting face, total dry weight 473 Lbs (includes magnetos, unshielded ignition wiring and plugs, carb, prop centering cones and nut, oil filter).

In addition to above weight, E-80 starter + 19 1/4 Lbs, Breeze radio shielding + 10 1/2 Lbs, prop hub + 15 Lbs, Eclipse generator + 15 1/4 Lbs, Romec fuel pump + 1 Lb 10 ozs, Romec vacuum pump 4 Lbs.

It all adds up!

Howard

I'm pretty sure the L4 is larger in diameter than the R755A and B's. When they mount those on the 195 it requires a cowl mod and it sticks out on the sides. (The original post didn't specify model)

You must be thinking of an L-6 of 330hp. The L-4 was 225hp upgraded during WWII as a R755 to be 245hp. After WWII it was upgraded further to be 275hp. You cannot hardly find an L-4 and why would you? You can order an overhauled 245 or 275 from several places. I have had both the 245 and the 275 on my Waco.

_________________
President National Waco Club
Curator for the Waco Historical Society Air Museum
Writer for VINTAGE AIRPLANE, SKYWAYS, BARNSTORMERS.COM EFLYER

Yes I was thinking of L-6 sorry.
Most 245's have been changed to 755B-2 configuration by now (considered to be the finest Jacobs as I understand- really more than 275, while the A-2 is really less than 300hp)and with the option for fuel injection, better than ever.