Hi,

Dan:
No, I have not run the 3M-140 yet. I have ordered the 170 now with the carbon pipe. This will go into the Rhapsody. The 140 will probably be used for the ZN-Line Synergy I have ordered...

Go here for a guy who tried both the 140 and the new 170:

http://home.online.no/~ofremmi/F3A/T..._Mintor/3m.htm


LoTom:
My firewall is reinforced with circular plywood pieces where the three mounting screws of the mount go through the firewall. In Mark Novak's thread I can see that ZN-Line uses an exoxy mixture instead, but the objective is the same, to stop the nomex from crushing when you tighten the mounting screws.

The firewall is mounted only after the nose-ring support has been installed. Then the engine is installed in the model on the mount and with the firewall installed WITHOUT gluing. When you are happy with the fit and the thrust lines I tack glue in the firewall using CA. Then I carefully remove the engine and mount. Now the firewall is permanently attached using an epoxy and microballon mixture.

I have not come to installing the wing servos yet, but I don't suspect and big problems... I will get back to this when I get that far.

Regarding the wing fixing. The plywood is not only glued to the wing tube socket, but also to the root rib where it goes through... I see no problems with this.
I'm not convinced I like his mounting system though, since it could develop sloop over time. It would probably be better to pull the wings to the fuselage either using the PL-Prod method of screws or using a rubber band and two hooks in the root ribs.

This is my first pattern model with plug in wings and I have not decided yet what to use... If any of you guys have some good advice I would love to hear it !!!

I have attached a picture of one of the PL-Prod factory models where you can see the plastic wing nuts they use to hold the wings onto the model. They have two nuts in both root ribs. The other pair are located behind the wing tube...