Brodak 4" belcrank.

[Matt Neumann]

Silly question.  I have a couple of 4" Brodak belcranks that look like the 4 inch version of the old Topflite 3 inch.  Has anyone have any strength issues with it with a 35 size plane?  I know there is the 4 inch PSP versions out there.  I have some of those but they are heavier.  Now I would certainly use the PSP version on the big boys.  But how about the smaller planes?  Has anyone have any strength issues with the 4" Topflite version?

[Motorman]

What's the Brodak part # are they black or white?

[Tony Drago]

4” Nylon Bellcrank by Brodak
SKU# BB-389
  White

[Motorman]

Early on I've used the black version which I think is stronger fiberglass reinforced plastic. I drilled the holes out bigger to accept brass tubing horse shoe lead outs. I was worried it would fail there but it never has on my 46 powered Tanager or my Brodak40 powered Banshee. The clear/white nylon version I would never use on anything.

By the way, the three holes on the throw are: shortest=racing, middle=stunt, longest=combat.

These days I make all my bellcranks from phenolic G10 Garolite 1/8" plate. 

MM