My mate had a wicked idea today, ive had my boom slip in a few times on my 450 sev2. Was looking at the threads and some are using tape to stop this. We got hold of a couple of stock boom servo mounts (the blue cnc ones). We had one each, I cut the part off with a dremmel that the servo screws to, leaving a circle with the screw in. Took off my boom slipped this baby on set it all up again with the belt at the right tension and then pushed the ring upto the block and screwed it tight. Cant see that moving again in a hurry.
Wicked mod peeps.
Marcel

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Trex 450 SEv2, futaba 401+ 9257, Hs65mg's
Trex 500 CF, futaba 502+ 9257's for all
Trex 600 Npro, Futaba 611+ 251, 451's, Gv1
Planks- Mini Showtime, Oxalys 50, 55" Cap 580, Twist 60
Spektrum DX7 (waiting on the JR 2.4 12channel)