Quote:
Originally Posted by schwarze-man
Hi Peter,
The 3355.1 is the metal specification and, the symbol is the metal makers trademark. The slight "starry" ribbing of the diaphram is to add stiffness to it. The "bakelit" ring is a support ring that fits tightly onto the front of the propellor hub (Nabe) to hold the Haube steady and prevent it distorting in flight. That ring is described as gummi in the manual. It would be a hard rubber. Many other support rings like that are made in Tufnol, which is a reinforced resin. Cheers
SM
|
Hello SM,
All of this is absolutely correct.
Just a point: When you write "are made in Tufnol", are you saying "are" or "were"? In this instance other rings on Luftwaffe airplanes?
If so, another British product used by Germany during the WWII ?
Since it was and is British patented I'm quite surprised.
...
As for me I used Téflon(r) in Naval constructions and, later (more recently), German made cold mills for the same (generaly speaking) use.
...
For the curious, a very interested internet page:
http://ahistoryoftufnol.org/whatistufnol/index.html
Regards,
Franck.