New Feather Idea

[joey_picus]

The featherweight Battlekits seem to be able to make 2 S28-150s work, to be fair - admittedly they use chains rather than gears, but its not an impossibility.

I do think though youre not taking reality into account when planning this - you seem to not have made any considerations for budget or indedd practicality.

[joey_picus]

http://www.robotmarketplace.com/products/battlekits.htmlhttp://www.robotmarketplace.com/prod...attlekits.html

[neontetra23]

Size: 10X35X45

[joey_picus]

Have you actually taken into account where youll get the parts for this? Or how youll afford them?

[swanaldo]

ben what parts for your feather do you actually have just out of interest. also you said you were going to build a heavyweight robot too so you really have got your work cut out.

[neontetra23]

none, and I have given up on the heavyweight,
Also, whats the best way to make a chassis for a feather?

[woody]

The best way to build a feather if your starting out ..havent much engineering experience and little money has been posted numerous times.

[geoff]

I think this is rapidly becoming a fairly pointless thread.

I grant you that a Mag powered feather is not impossible, but it would be an extreme technical challange even for a very experienced engineer, and then the result would be very questionable with regard to chassies strength and armour.

As Woody quite rightly states, to your last question, this subject has been done to death elsewere.

Mr Read, do you wish this thread to be closed and removed?

[maddox]

Ben, if you dont have a full machineshop at your disposal, you have a weight/money issue

Were doing the 1 shop stop in this. Robot marketplace is a suitable webbased shop.

2 magmotors S28/150. 3.5kg Pricetag £322
2 gearboxes capable handling the power with a suitable gearratio,
http://www.robotmarketplace.com/products/TW-TWM3M.htmlhttp://www.robotmarketplace.com/products/TW-TWM3M.html
Weight 4.4 kg pricetag £492.5

To get the power to the motors, you need batteries that can deliver at least 200amps without transforming into magic smoke.
2 sets of the 24V 2400 mAh NiCD Battlepacks should be capable. £133 weight 2.4kg
For the same weight you can have the NiMH 3300mAh packs, but then you pay £150

Speedo, Roboteq is going over 100A (and the mag S28/150 can draw up to 280A). £274 weight 1.4 kg

Grand total. 11.7 kg without wheels and £1222

To compare, the KOS Astroflight motor/custom build planetairy gearbox/motor in wheel setup with Sidewinder speedo and 13.1V A123 cells is the same pricetag, for 4.5kg all in.

And the Speed900/MSR gearbox combination with 13.1V A123s and Scorpion XXL speedo is £500 for less than 4 kg.