Neil Hodson 2

I have just tried to renew my registration. There appears to be no mechanism for renewal without taking the test again! I thought that the test was valid for three years?.

Posted by Allan Bennett on 07/05/2020 20:22:37: Posted by Daithi O Buitigh on 13/02/2020 11:20:45: Posted by Martin McIntosh on 13/02/2020 09:34:54: You will not require 4s. Beside the flight time being less you will have trouble squeezing the packs into the already very limited space. Don't forget, Martin that there are TWO FMS units - the 3S and the 4S. The 4S version running on 3S has LESS thrust than the 3S version running on the same set-up. From the thrust quoted by Allan, he has the 4S versions I've got far enough with the build (full-length intake duct liners installed, and thrust tubes anchored at each end) that I was able to check the thrust today, nose-down on my scales: I'm using the 4S FMS fan units with two 4S 3300mAh Turnigy 20-30C LiPos which, for this test, were at 3.85v each. Total thrust was 1.65kg -- certainly nowhere near the quoted values, as was said in another post, but adequate so long as I can keep the weight down. Hi Allan I got 1.5 kg thrust using the same test (this was with Dr Mad Thrust units) so you should be OK. Neil

Hi Allen I used cardboard for the tubes. Seal with mastic before taping up. Much lighter, I used silver cardboard from a craft shop to save painting the ends where they project from the rear. I would post a picture but cant remember how to add an album. Neil