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Beetleweight resource page
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Glen
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Joined: 16 Jun 2004
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Some new drive options.

This is the inside of a $39 ozito screwdriver. The insides are basically a 1/2 scale drill gearbox. metal gears and all Smile

My intention is to take the $20 xu1 branded ones which should be 100% the same inside, remove the last stage of gearing and with the 380 size motor running on 3s with only one stage thatll yield 1300rpm Smile

I think these would be basically bulletproof with a little work.





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Post Wed Oct 24, 2012 1:27 pm 
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Knightrous
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Where the hell did you find $39? Razz
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Post Wed Oct 24, 2012 4:56 pm 
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Glen
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baha funny that, this is one mum bought, so im going to buy the $20 one at bunnings, harvest its guts, return it as faulty, do the same to the 2nd one and hopefully get my money back on that one thus yielding free drives Very Happy XD
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Post Wed Oct 24, 2012 5:20 pm 
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Jaemus
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lol
be sure to glue some washers inside so they dont find it suspiciously light Razz
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Wed Oct 24, 2012 5:26 pm 
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Knightrous
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Might have to see if we can get a source of the motor assembly from china Smile
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Post Wed Oct 24, 2012 8:07 pm 
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andrew



Joined: 16 Jun 2004
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Location: Castle Hill, Sydney. N.S.W


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glen your mt druitness is showing

http://www.hobbyking.com/hobbyking/store/__24662__Hobbyking_Electric_Screwdriver.html

saw this, unsure if usable for stuff but for 5 bucks a pop ill buy a handful next order and see what there like.
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Post Wed Oct 24, 2012 9:27 pm 
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Jaemus
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hobbyking! thats awesome

they're most probably exactly the same Razz the price is right:


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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Wed Oct 24, 2012 9:47 pm 
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marto
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So does anyone have a good source for non-metal flap gearboxes?

Steve
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Post Sat Oct 27, 2012 7:45 pm 
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dyrodium
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All i know is in true Chinese tradition my 1200rpm motors were half half. Evil or Very Mad Ebay is a gamble, the pictures mean nothing.
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Post Sat Oct 27, 2012 8:51 pm 
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rjw



Joined: 04 Jul 2010
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Location: Miami, Fl. USA


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Can anyone tell me what the latest options for Beatle drive gearbox/motors??

I'm looking for something kind of cheap. I bought a pair of the Ebaay 1000 rpm things, but they are not a planetary, just some spur gears.

I guess that I am looking for something close to the old Banebots 24mm gearmotors.

Thanks

Post Sun May 05, 2013 3:49 am 
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marto
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Lots of people use the 1000rpm spur ones they are ok for beetles.

The issue with them is that some chinese manufacturers of the motors have decided that the don't need copper brushes. And have just started leaving the flaps which spring the brushes onto the commutator without them.

This means they have really high resistance at this point and sweet .... all power.

Steve
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Steven Martin
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Post Sun May 05, 2013 10:06 am 
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Jaemus
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Pololu also have a range of similar motors
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Sun May 05, 2013 11:10 am 
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rjw



Joined: 04 Jul 2010
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Location: Miami, Fl. USA


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quote:
Originally posted by marto:
Lots of people use the 1000rpm spur ones they are ok for beetles.

The issue with them is that some chinese manufacturers of the motors have decided that the don't need copper brushes. And have just started leaving the flaps which spring the brushes onto the commutator without them.

This means they have really high resistance at this point and sweet .... all power.

Steve


I found a guy on ebay selling them for around $16 per pair...how do I know if the motors are any good?

Any other sources outside of kitbots?

thanks

Post Mon May 06, 2013 12:51 pm 
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dyrodium
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My complaint still stands, the ebay sellers are completely random, hit and miss, I got two types in the same order one with real brushes the other with the copper flaps and unusable. No known reliable sellers...
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Post Mon May 06, 2013 12:58 pm 
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Knightrous
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I can source the gearboxes easy enough from our gearmotor supplier, but cannot get a decent motor to match the specs of the eBay ones Sad
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Post Mon May 06, 2013 1:20 pm 
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