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Melroy



Joined: 07 Mar 2016
Posts: 4
Location: INDIA


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New builder

HELLO,
I want to know which drive motor should I use for following category;
Weight of the bot 35kg
Dimension (50*50*35)cm
Two wheels
Control:wireless
Motor type:DC geared
Apprx.rpm of 3000-4000rpm with geared .
Motor should also defend 35kg of opponent bot.
Thank you Smile

Post Sun Mar 20, 2016 10:54 pm 
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maddox



Joined: 21 Dec 2006
Posts: 758
Location: Belgium


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Why 35 kg?
We have featehrweights/sportsman class. 30lbs or 13.6kg.

Lightweights , 60lbs or 27.2 kg

Middleweights , 120lbs or 54.4kg.

Heavyweights 220lbs, 250 lbs or 100kg or 110 kg depending on what continent you're playing. The heavier are the "new TV weights".

Post Sun Mar 20, 2016 11:04 pm 
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Melroy



Joined: 07 Mar 2016
Posts: 4
Location: INDIA


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BECAUSE ITS INTER COLLEGE COMPITATIONS , SO THEY SPECIFIED US 35KG.

Post Mon Mar 21, 2016 1:56 am 
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maddox



Joined: 21 Dec 2006
Posts: 758
Location: Belgium


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Annying weightclass to find motors for.

Maybe one of the Chinese scootermotors like the MY1016

Post Mon Mar 21, 2016 4:33 am 
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Nick
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 11745
Location: Sydney, NSW


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The organisers just made the competition very expensive for everyone Sad. The difference between costs for featherweight and lightweight bots are more than double as most cheap R/C parts are not up to powering heavier bots.

I agree with Mario, scooter motors are a good choice but I would search for a motor around 500 watts to more a 35Kg bot. If you can find a motor with a lower output speed, it will be easy to gear it down to drive the wheels with just one chain drive reduction.
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Post Mon Mar 21, 2016 8:31 am 
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Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8469
Location: NSW


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https://www.motiondynamics.com.au/dayton-500w-0.67-hp-24v-dc-planetary-500rpm.html

500RPM output which is suitable for using with small 100mm wheels with a 1:1 change drive or big 250mm wheels with a larger reduction.
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Post Mon Mar 21, 2016 10:19 am 
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Nick
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 11745
Location: Sydney, NSW


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Exactly what I was thinking Cool. The only problem is getting a set into India - having lived there for a bit, I know that a rupee doesn't go far when ordering internationally! A set for those motors would be 12,000 rupees before shipping. Take those motor specs and search the Chinese sites to see if they can be bought cheaper.
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Post Mon Mar 21, 2016 10:37 am 
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