@Yinnon_Haviv did you get any further with testing your PG gland cable entry into the mast clamp? I’m keen to do similar and hear your result.
Nope, I didn’t get back to this. sorry.
I printed the mat flange with the cable glands and made a test of waterproofness but in static … no leak … I silicone mounting screw threads of the glands.
First of all - thanks for posting these amazing resources!
I am attempting a build based on your design and at the moment there is a long delivery time (12 weeks!) for the Neugart PL40 5:1 drive. However, 8:1 are available. What are your thoughts on using this ratio instead? I will be using a SSS 56104 500 Kv motor and a VESC 6.
Could the pitch of the prop be adjusted to compensate? Or should I simply wait for the 5:1 gearbox?
Also, it would be interesting to hear if anyone has sucessfully used any of the Chinese copies of the Neugart gearbox.
Do you think that the VESC6 can resist the amperage asked to get out of the water …?
It is a VESC 6.4. Do you think it is too small?
It is rated 80A continous 120A burst.
At 12s the power would be about 50v x 120A = 6Kw burst and 4K2 continous.
I have not been able to find out how long “burst” could be sustained, but I guess cooling is an important factor. Do you have any figures?
What are your expericences with the VESC? Would you select a Seaking 130A-HV V3 ESC instead?
8:1 should work while it lasts. My first build had a Parker 7:1 and it worked fine until it stripped. You may need to adjust prop a little but I’d start with the 4 blade and see. The 5:1 or 4:1 ratios are supposed to be a little more robust for max torque and max rpm, because of the size of the planets. That was the main reason I went to 5:1.
Thanks for the advice! I will try the 8:1 and see!
This is a question for anyone using a hobby wing 130ahv esc.
Is everyone got water cooling for the esc? Or are you using a alumium plate as a heat sink to the boards external surface
I have not got any esc cooling just a aluminium lid. I am having problems with the board cutting out then motor beeps , then when I leave for a couple minutes it back to normal. This have only started since I using a bigger prop 160mm seems be be struggling for power ( other prop 130mm no issues )
Have anyone else had similar issues.
Hi all! New builder here after discovering this thread yesterday. Looking at exploring the use of a cheap chinese PLE60 (ignoring longevity issues for now), with square flanges turned down to the 57mm housing diameter on a lathe - this way the gearbox can be watercooled through the Aluminium housing as is done for the motor. Will update as to the success of this idea!
Just a quick question though @pacificmeister - I notice in your Rev3 that you are using an openable O-ring solution for the rear attachment of the Al tubing - but I can’t see any sort of fixing that holds the rear printed parts on? Obviously the thrust will be pushing it on, however I can imagine prop drag pulling the whole motor/gearbox assembly straight out into the water if this were the case - I therefore assume there is some attachment hiding in there somewhere?
This is my current approx layout fyi - using a 30204 tapered roller bearing to take the thrust. Also moved the final bearing and oil seals around: