Hi All
Im soon to be purchasing these batteries:
http://www.overlander.co.uk/detail.asp?categoryid=55&ID=92http://www.overlander.co.uk/detail.a...oryid=55&ID=92
And I wanted to ask if my 12v motors stall, and Im running them on 24v (I should be anyway), will the stall current exceed 30Amp, because thats the rating on my speedos (a pair of electronize ones)
Thanks in advance
David Weston
if need be you can allways turn them down to a lower voltage on the speedo. also i belive they have standard 30amp fuses in them so it would blow just the fuse if anything. youll probably find on 12v they are fast enough as thats what i run them on at events with the same size wheel that you use. 18v may be too quick.
30 A is the continuous rating. The Electronize controllers will handle higher short term stall currents. There is also a temperature sensor that will turn off the speedo at about 150 A.
http://www.electronize.co.uk/model_electronics_frames.htmhttp://www.electronize.co.uk/model_e...ics_frames.htm
30 amp electronize dont come with fuses James, not as standard anyway
hmm. all 3 of mine had them. and my 15amp ones. if yours dont david it would be easy to put one in.
you must be getting special treatment James
Fella on the phone at electronize said they do not come with fuses. 15A do, 30A dont. Maybe your dad put them on without you knowing? or maybe they came with them for a short time all those years ago when you started roboteering? but not anymore.
General advice to roboteers buying on other peoples advice (including mine, no offence to anyone) its cheaper to phone and ask the manufacturer than get sent the wrong thing.
any news on me getting my stuff back JC?
(Message edited by jamesb on November 25, 2005)
ps, its about £9 to fix usually if you blow one up.... your call on the fuse David.
Ye might be because i get mine direct from the factory and watched them make the speedos when i pick them up.
like i say it is easy to put a fuse holder in and is worth doing just in case.
the point I was making, as I am a retailer of electronize speed controllers (although I have to admit that I do not sit in their factory watching them build my order.... wonder how many customers they do that for?) is that, as Philip said, the controllers are capable of more than 30A. In fact, the single direction versions are rated at 40A as the relay is the component setting the 30A limit. (did you know that JC?) So, my advice, is that if you need less than 30A, it is easy to put a fuse in, but if you want to use the full potential of the controller, dont. Worst case it blows (in a fight no more deadly than the fuse blowing) and you send it back for repair. The only time I would reccommend using fuses in a combat robot is if you know the repair is more expensive, you have no spares, or as in some cases, you do not know what you are doing and get other people to wire them up for you.
so, do I get my stuff back JC? or will you send back the money I gave you for it? Just wondering... you could alway return one of the e-mails I sent you to keep the discussion off the forum...
A fuse will prevent a short circuit burning all the cabling in your robot.
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