X-Mozilla-Keys:                                                                                 

<< Bob Darrah wrote:
 >
 > My 20B must have lead rotor housings!   With nothing except the
 > flywheel, it weighs 360 pounds.  No water pump, no manifolds,
 > no nothing.  That seems to be a tad higher than what I am seeing
 > on the other postings.
 >
 > Bob Darrah

 Wow that is a lot. Check your scale. Is that an auto
 TX flywheel. Must be!
  >>

The 20b shouldn't be that much heavier. The only part that doesn't conform to
the 13b parts is the large center housing which may be an extra 10 LB added
to the additional 50% more engine. The counterweights are a little heaver
too. For all practical purposes, the 20b, is a stretch twin turbo (13b
REW).The front, small center, and rear iron castings are the samecastinge
used in the twin turbo. I'll admit that I haven't actually hung one on a
scale but I would be very surprised if it weighed much more than 55% over the
13b REW.  BruceT2598@aol.com 

Doing the numbers that should put the dry weight (probably less 
flywheel) right about 305 to 310 pounds.

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org