Decent motors

[knightrous]

Decent motors

Dewalts IMHO are a much better motor in terms of price and performance.

Why pay USD$160 for an Astroflight motor (no gearbox etc etc) when you can pay USD$165 for a Team Delta 18v Dewalt kit with motor, gearbox (2 speed), CNC mounts and output shaft.

The Dewalts have a great range of spares from easy to access places like Dewalts Service and Part or the Robot Market Place. IIRC, Astroflight 940 motors are no longer available in combat models (They still make boat/plane ones I think) and you have to make your own custom gearbox which is even more money...

Weve had some very sucessful rambots here in Australia using Dewalts.

Singularity - 4 x 18v Dewalts on 18v with 5 wheels - http://www.youtube.com/watch?v=MbNm2TOE91whttp://www.youtube.com/watch?v=MbNm2TOE91w - http://www.youtube.com/watch?v=7qnXrhRG_Rshttp://www.youtube.com/watch?v=7qnXrhRG_Rs

King Cobra - 2 x 18v Dewalts on 24v with 3 wheels - http://www.youtube.com/watch?v=L1MD1gDEXLQhttp://www.youtube.com/watch?v=L1MD1gDEXLQ - http://www.youtube.com/watch?v=eLvU4IQIbw0http://www.youtube.com/watch?v=eLvU4IQIbw0

Eleanor - 2 x 18v Dewalts on 23.6v (7 cell A123 pack) with 3 wheels - http://www.youtube.com/watch?v=UkatXUaz5uchttp://www.youtube.com/watch?v=UkatXUaz5uc - http://www.youtube.com/watch?v=BRxC06xtGyohttp://www.youtube.com/watch?v=BRxC06xtGyo

Just my 2c

[grant_ploughbot]

Decent motors

I use Astros for the weight. They are very light for the power they give out, and i dont have enough weight spare for anything heavier.
Astroflight 940 motors are no longer available in combat models????
They are still astroflights main industrial motors. I just bought another batch a couple of weeks ago.

[psycho_fling]

Decent motors

are these any good?

http://www.battlekits.com/battle_kits_order.htmhttp://www.battlekits.com/battle_kits_order.htm

and is the $149 price for both sides?

alex

[kodster]

Decent motors

James, I like the TWRs. They seem really good for the type of bot I want.

[typhoon_driver]

Decent motors

alexander I cant comment on quality however I believe it to be high but you have to buy the $149 is for a single side module and then you have to buy your motors on top of that. So if you were to go for two along with two s28-150 magmotors (as an example) then it would cost $298 for the modules plus $598 for the two motors plus shipping and probably plus VAT when it arrives of 17.5%

Not as cheap as it first appears!

[jamesb]

Decent motors

$300 for 2 sides, plus $160 for his econemy motors, is about £250, plus import shipping and any VAT etc, it is easily £300-£350....

but then thats still not bad for a full drive setup.

Id say use 2 TWR18s, or for more power, use 4

[kodster]

Decent motors

I think that James is right there, 4 TWRs are pleeeeeeeeeenty for a feather who needs tons of power.

But I think Ill take 2 (when I can get em). I dont need that much of a rammer, just a flipper, and some pushability.

[jamesb]

Decent motors

just make sure you get the matching wheels Kody, they are really good bits of kit

[kodster]

Decent motors

They have pretty good quality rubber, so yeah, they are a good choice. But Ill have to come up with a body design for my feather, a design that makes good use of those wheels.

[leorcc]

Decent motors

The same setup als Bonx and Hannibalito 2 cost us roughly 120 euros including motors. Thats 80 British Pounds.

And people who have seen Bonx in action cant say it is lacking power.

[psycho_fling]

Decent motors

Technobots Feather Gold 24V 150W

would that do for a good runner?

[typhoon_driver]

Decent motors

they are very nice little motors. Gear them correctly and you will have a very nice featherweight drive.

[psycho_fling]

Decent motors

how do you gear a motor? this is probably a rookie question but i have never had to do it!

alex

[aliboy]

Decent motors

With gears

[RogueTwoRobots]

Decent motors

Spur gears, chains and sprockets, timing belts - whatever method you prefer. Youre most likely to have seen drive systems gearing down the speed of the motors at the events youve been to.

Off-hand examples:
Chains and sprockets - DB5
Spur gears - Batterbot
Timing belts and pulleys - Pillow Torque, Pain in the Asp.

Theyre all effective methods of gearing the motor so that the drive has enough torque to power your featherweight. Obviously the speed and amount of power your featherweight can produce depends on the ratios used with the gears, sprockets, pulleys etc