Welcome to Multi-Rotor UK. Please login or sign up.

Thursday,July 09, 2020, 02:48:10

Login with username, password and session length


08 Jul 2020 23:54:24
08 Jul 2020 10:22:40
My mother did it, which explains the mental conditions of my sisters, its a genetic  thing. :D
07 Jul 2020 14:01:29
... I could ask how you knoiw this... but I would regret it.
07 Jul 2020 11:53:34
Little known fact, if you push a runner bean seed up your nose the moisture will cause it to germinate, and expand.You wont get any beans though just  two black eyes. :o
04 Jul 2020 13:16:48
VIDEO or it didn't happen!! :) Nice going though, keep it up!
Bad Raven:
02 Jul 2020 19:46:48
whoelseisbored (LiamHowe89):
02 Jul 2020 17:45:19
Sounds basic but I'm happy with it  :laugh:
whoelseisbored (LiamHowe89):
02 Jul 2020 17:45:05
Managed a split s :D
28 Jun 2020 12:29:49
BF GPS Rescue mode configured - what could possibly go wrong?   :o
27 Jun 2020 21:07:37
and can't make it back to where you take off from   :laugh:
  • Total Members: 8117
  • Latest: heli999
  • Total Posts: 198994
  • Total Topics: 20052
  • Online Today: 26
  • Online Ever: 530
  • (Tuesday,June 26, 2012, 08:34:46 )
Users Online
Users: 1
Guests: 24
Total: 25

Theme Changer


3d - Printworx

Printing 3d Forum

Hex upgrade to TBS 750kv motors

Started by Rocket_Col, Tuesday,January 29, 2013, 12:24:36

Previous topic - Next topic


Tuesday,January 29, 2013, 12:24:36 Last Edit: Tuesday,January 29, 2013, 12:55:13 by Rocket_Col
Hi all, just some info on my HEX upgrade.
Gone from the cheap 1000kv motors from china with the collet prop adaptors to TBS 750kv motors as a first step.
The motors came Monday and looked good quality nice screen printed labels and art work.
The only thing that let them down was the prop adapter, this is a cast aluminium part that is held onto the top of the motor using 4, M2 machine screws, I loctited these screws in but would have been happier with capheads as the cross always strips out.
Any way. the M5 thread was way under size and the M5 in the top nut was oversize, leading to a very loose and wobbly fit, the 5mm diameter part at the bottom that should fit the prop on is very short (6mm long) and is not round ( 4.88 to 5.05) I think this is because the thread is machined but the rest is just left cast, would have been better if some was left on and thread and shaft machined in one (but the price will go up, its all a compromise)
The play in the top nut and thread was taken up with a little PTFE tape. I will look to replace the prop adapters at a larer date if I get the chance. But for the price, these are a great motor.
I also put on a camera gimble and have it linked to my Rabbit FC, it seems a little slow and does not keep up with the Hex movements? new servo or perameter change???
Also fitted the replacement 5 pin sonar, had some trouble geting it to read anything other than 190 - 200 but after an hour of messing realised it was bouncing a signal back from a cross brace on the legs (Doh) moved the brace back and all ok now.
Also replaced the GPS unit. This was a cheap £19 china part and seems to work ok.
A quick test hover with 10x5 props on showed the usual turn to the right on lift off and a very slow clockwise rotation. I think the yaw on FC wants adjusting as its the same on my other Rabbit.
All in all a good first flight. Wind and wet weather stopped anymore flights will keep you up to date.
CarbonCore Y6


More pics
CarbonCore Y6


Looking good, quality motors make a big difference,.. lower KV should help flight times as well

BNUC-S Pilot with PfCo /PFAW.
UAQ / CAA PfCo Instructor / Flight Assessor

"All that is necessary for the triumph of evil is that good men do nothing"


Looking good Col glad to hear the motors are an improvement  ~~
up the yaw gain on the rabbit a bit more see if that cures the yaw drifting  ~~