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right, hoping to start making a new one this friday, ordered some 20mm nylon 6 for the 2 bulk heads that will support the drum and the drill motors, theres gonna be a 3mm ali or mabye even 2mm ti baseplate and the rest is hardox with the exception of the lid
but i need some advice as to whether i go 2 or 4 wheel drive off a pair of drill motors some pics are below........
[attachment=1:39vw2ait]BILD0001.JPG[/attachment:39vw2ait]
[attachment=0:39vw2ait]BILD0002.JPG[/attachment:39vw2ait]
not fully settled on a design yet and the insides would be set out differentally but i'd use the 75mm wheels instead thou to save on the weight as wheels that big aren't really needed but im really stuck as to what set up im having, the benifits of 4 wheel drive were purley due to the drum being 3.7 kg i was worried about it being front heavy and not driving properly so with 2 wheels either side of the drum it would get rid of this problem and drive better, but then of course then theres all the extra weight from extra wheels and mountings etc and the robot slowly starts to get less compact as it'd have to be made wider to house the wheels and belts so i'd have to skimp on armour. or with the 2 wheels i'd use that size of wheel but i've tried making the robot to have as much weight as possible over the wheels and i've also put them as close to the drum as possible. Althought 4 wheel drive would look better visually, part of me just wants to keep everything simple and 2 wheel drive and see what happens,
then of course theres the problem of it not being invertible, but i think i could live with this because once its upside down anyway the drum isnt effective spining downwards, i could use those massive 150mm wheels again but i don't fancy it cause that take away too much power from the motors and pushing power is very low, but any ideas anyone?
but i need some advice as to whether i go 2 or 4 wheel drive off a pair of drill motors some pics are below........
[attachment=1:39vw2ait]BILD0001.JPG[/attachment:39vw2ait]
[attachment=0:39vw2ait]BILD0002.JPG[/attachment:39vw2ait]
not fully settled on a design yet and the insides would be set out differentally but i'd use the 75mm wheels instead thou to save on the weight as wheels that big aren't really needed but im really stuck as to what set up im having, the benifits of 4 wheel drive were purley due to the drum being 3.7 kg i was worried about it being front heavy and not driving properly so with 2 wheels either side of the drum it would get rid of this problem and drive better, but then of course then theres all the extra weight from extra wheels and mountings etc and the robot slowly starts to get less compact as it'd have to be made wider to house the wheels and belts so i'd have to skimp on armour. or with the 2 wheels i'd use that size of wheel but i've tried making the robot to have as much weight as possible over the wheels and i've also put them as close to the drum as possible. Althought 4 wheel drive would look better visually, part of me just wants to keep everything simple and 2 wheel drive and see what happens,
then of course theres the problem of it not being invertible, but i think i could live with this because once its upside down anyway the drum isnt effective spining downwards, i could use those massive 150mm wheels again but i don't fancy it cause that take away too much power from the motors and pushing power is very low, but any ideas anyone?
)as it spins, and there are going to be some very bad vibrations.
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