The drawing on my profile was an early design for the tail servo. It was going to costs too much for the custom gears though, so I went for the DeWalt 24V instead.
John
New feather coming on cant do much more till Sidewinder arrives. Latest pic on profile.
wouldnt you be better using nicads with Evs?
Dont Know but cant afford to get any new batteries at the moment them Sidewinders are not cheap
ev are fine on nimh. Ive used em for three years and never damaged a cell.
Looks like its going to be fast and pushy Tony
Yes when I tested the drive I did not get it fully clear of the floor, it was up so it did not move but I thought whats that smell it was the carpet starting to burn from the friction.
microCHIP is coming along nicely Tony, I tested the astro/hardox spinner on Sunday, only at 9v on the psu!! Pulled 23A and went very fast. Might not run it at 24v after all. Maybe just 14.4v.
Made the Ti side skirts today.
Will post a pic soon
23A @ 9V!!!!! bloody hell!! Rob, what have you done?..thats drawing WAY too much current, either your gear ratio is too low or you have very stiff bearings!
Mind you, are you talking about start up load or continious running load?
Scorpion Evilution draws around a 50A peak load on start up reducing very quickly to around a 12A running load.
(and that is for TWO Astroflights!)
That was continous :sad:
The belt was pretty slack too.
No too sure why it was pulling so much. The ratio is 3:1
Rob
Rob,
23A Continous!!!..Nah, cant be that high... Somethings not right there!
If you remove the belt and let the motor run free you should see a load somewhere in the order of 3-4A @12V If you get significantly more than that then first check what the motor draws running in the other direction, Astroflight 940s can be biased to run faster in one direction by adjusting the end cap / brush housing. If they are set up this way and you try to run them the wrong way they use stupid amounts of current and get so hot you will end up smoking it in a very short time.
The motor should come from the factory set for bi-directional use but its always worth checking! You can do this by looking for a small scribe mark on the rear end of the
black motor body and making sure it lines up with a corresponding mark on the gold coloured end cap just in FRONT of one of the brush housings.
If the mark on the body lines up with the mark on the end cap to the SIDE of the brush housing then the motor is set for single direction use.
If you need to change it, e-mail me and Ill tell you the easiest way to do it.
Hope this helps.
Geoff.
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