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hi im a new roboteer and looking to build a middle weight bot. I was thinking of using two electric scooter motors (which these are already geared and have full transmission to the wheels) has anyone used these, if so could you give me there
good points
and the bad points
thanks
billy
have you got any pictures of them?
hi there gary,
i havent got them yet, having a look at my mates, they must be alright if they can make an adult go up 15mph (well so the box says lol)
i have seen these scooters in action. i weight 100kg (ish) and having ridden a very good one, i think you are JUST ABOUT able to use them. it will be right on the edge as far as performance goes, you are getting near the bottom end of what i would say is useful power/speed. these would make brilliant featherweight drive, but middleweight... i wouldnt.
but then, if you can double the gear ratio and overvolt them 100%, maybe this is getting reasonable results? i imagine youd get good performance in this situation, but life expectancy would be an unknown.
hope this helps
William, to be honest I think you would be better looking at motors around the 400w to 750w range. In the middleweight typhoon we used 2 750w iskra motors and they were more than adequate for our needs.
if you need gearboxes as well? try finding scrap mobility scooters (like the ones you see in asda) or small elecric wheelchair motors?
another option, start with a featherweight, and move up to middleweights later?
thanks for the help guys, much needed
does anyone know where to buy second hand wheel chair motors with gear boxes attached?
ta
billy
would these wheel chair motors be the best to use, (im trying to get a motor which has already the gear box on it, and even better if the transmission is there also)
ta
billy
Gearbox and transmission is thesame for us.
Unless you want to go Firestorm, with a single motor and a differential( keep in mind that Firestorm had 1 large and 2 small motors)
Also, I think the Speed 900 motors can drive a middle. If you use 4 of m. Each do easely 320W on 24V. If 259 in heavy config could drive on 4 simular motors....
The other problem is that a middleweight has a lack of opponents, and fighting the heavyweights hurts!
do any of yous think that the scooter motors would be ok to use for a lighweight bot?
thanx
billy
With the right size of wheel, Yes.
Scooter motors or wheelchair motors will be fine. With wheelchairs you get motor/gearbox/wheel in one package. Lots of wheelchair units are scrapped when they have lots of life left in them. Go to your local mobility store and see whats available or check the ads in Friday Ad. You will need to remove or defeat the brake but thats not hard.
Wheelchair units will give you a slow and underpowered robot but it will be an easy build and easy to drive. You can run 36 volts to the motors to speed it up. Make it very solid with armour over the wheels because although you plan a middleweight, you will find yourself fighting heavies. I have had over 50 fights with my middleweight and only 4 of those were against other middles.
Good luck with your build.
Are you going to Wicksteed Park, John? Or more importantly, is the Sandwich going?
You can change the gearing on wheelchair motors to give more speed.
any middles at all going into the uk champs?
I fancy a go. The repairs to Broadsword are minor and I would like to redo the bits that that the heavies broke last year. Its all a matter to having the time.
it was u2s fault that it broke dont blame me
lol
I cant expect to go into battle and not get a kicking. Fighting heavies as a middle is rather like a one legged man at a bottom kicking contest.
As it turns out, last minute committments have put a halt to plans this year. Im pretty disappointed but time is my enemy yet again. Ive been out of paid employment for almost 3 years now and I have yet to find time for myself. With my youngest now to go all day to school with a place at a local special school, maybe I can sort the robot stuff out.
After an accident on my Pride Victory scooter which resulted in an ellusive control probem, I now have a perfectly good motor / gearbox unit and two Curtis DC contolers (one brand new)spare. Is this of any interest to anyone?}}
Hi Andrew,
Id be interested in the controllers.
Could you give me the model number and a price?
Woody
Hello Woody,
I was sure that my reply was on the board but it`s not there so I shall try again.
Both controllers are 24volt 70amp Type 1228-2405.
One is brand new and was £130 so I would like £70 for both if they are suitable. I live near Stony Sratford just off the A5 if that is any help.
Andrew
Whats a model number?(Cheques on its way-sorry for the wait woody.........postal strike didnt help!)
it the number they give to a particular what ever just so you can pin point which one exactly, helps get rid of confusion
Thanks Alex.
Cheers Andrew,
Consider them provisionally sold.
Ill email you privately.
BTW... Your not very far away from me ....Im located between Bedford and Milton Keynes.
@ Dan... No problem.
Hello Woody,
This is frustrating but I have`t given up yet.
Bignipper should have my details for you.
Good luck, Andrew
How odd .....no emails getting thru between us?
Ill try via an alternative address.
Nope ...tried via Hotmail...
This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed. amfhay-AT-btinternt.com
(Message edited by woody on October 28, 2007)
btinternet has 2x es
Ah ....indeed it does.
Any chance of altering the incorrect one his profile?
Only users can edit their individual profiles.