View Full Version : Trex 500 pro head problem

01-06-2012, 08:04 PM
just pick up 500e pro with flybar and putting the head together the manual said linkage (A) is to be 31.5mm and linage rod (B) is to be 30.5 one of them is wrong need help :arggg:

01-07-2012, 04:18 PM
Thats correct.

Linkage Rod A and Linkage Rod B are different links and go to different places


Van Edward
01-10-2012, 10:03 PM
I had this problem as well, rod A cannot be made to 31.5mm with the 10mm rod and small links. Use the inside dimension of 2.5mm and it works out correct. I got this info from Gregor at Amain hobbies and it worked out fine good luck

01-11-2012, 07:41 AM
Sorry, I misread what you were really after ..... I just rebuilt my head last night and this is what my settings were.....

Linkage Rod A should be 21.5mm

Linkage Rod B should be 30.5mm

Linkage Rod C should be 70.5mm

These are just arbitary settings and you still need to adjust pitch / tracking to suit afterwards.