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Thread: Some general tips please

  1. 3rd March 2005, 18:31 #31
    Guest
    well ok listen
    i will be running the motors independently for tank steering. the motors will be running at 24v at 300w. and do i need two speedos or just two heatsinks? can this speedo handle this?
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  2. 3rd March 2005, 19:03 #32
    Member
    The controller should handle BOTH your 300w motors IF you can add a suitable heatsink.

    I believe option d) would give you tank style steering.

    The parts of the controller that need this heatsink are the Mosfets ( they get hotter as the amps draw rises ) ... they have their own small built in heatsink that will handle getting rid of the small ammount of heat generated @ 5 amps ......but need an additional heatsink to reach their continuos rating of 22 amps.

    A heatsink is usually a aluminium block and more often than not it is finned.
    Its aluminium because this conducts heat away efficiently and finned to increase the surface area and thus the cooling.


    Paul Copper @ Technobots was hoping to supply such an item for the MD22....try E-mailing him.
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  3. 3rd March 2005, 19:18 #33
    Member
    Link to a pic of the controller below the MD22 .....the MD03 single motor controller with a heatsink .... the black finned item .

    http://www.technobots.co.uk/media/1502-010.jpg    http://www.technobots.co.uk/media/1502-010.jpg

    Im NOT recommending the MD22 ....only showing you an option in your price bracket.

    Id recommend buying a complete set up from one of the forum members IF you can find one on offer in your price range.
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  4. 3rd March 2005, 19:23 #34
    Guest
    I think im gonna buy 75A 24V 4QD VTX speedos
    http://www.technobots.co.uk/en-gb/dept_518.htmlhttp://www.technobots.co.uk/en-gb/dept_518.html
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  5. 3rd March 2005, 20:25 #35
    Member
    By which you mean these - http://www.technobots.co.uk/en-gb/dept_475.htmlhttp://www.technobots.co.uk/en-gb/dept_475.html ?

    Ed
    http://www.teamstorm.comhttp://www.teamstorm.com
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  6. 3rd March 2005, 20:43 #36
    Member
    I think youll find that you need 2 ..

    £85 each ...thats £170 ....plus an interface board @ £70.
    Seems a little over budget!

    BTW Complete...ish robots are being sold on this forum for less than £250.
    http://www.fightingrobots.co.uk/discus/messages/89/4032.html?1109337255    http://www.fightingrobots.co.uk/disc....html?11093372 55
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  7. 3rd March 2005, 20:46 #37
    Guest
    i suppose they are over budget. i dont think i can buy a complete one cos the building will also count to coursework
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  8. 3rd March 2005, 20:54 #38
    Member
    OK ......and good luck
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  9. 3rd March 2005, 21:37 #39
    typhoon_driver's Avatar
    Member
    Send a message via MSN to typhoon_driver
    couldnt you just buy one for the parts?
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  10. 4th March 2005, 13:23 #40
    Member
    The best way is to get a complete wheelchair and use the two motor/gearbox set plus controllers.
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