New Feather Idea

**neontetra23** · 2nd September 2008, 13:56

would an NPC 02446 be suitable

**woody** · 2nd September 2008, 14:18

You might find this useful....there is prog to download and play with.

http://www.totalinsanity.net/tut/mechanical/4barfrontbar.php http://www.totalinsanity.net/tut/mec...arfrontbar.php

**leorcc** · 2nd September 2008, 14:50

I use that program, its very handy once you get the hang of it.

**xtreme** · 2nd September 2008, 16:58

why not lift a car?
http://cgi.ebay.co.uk/ELECTRIC-2-0-TON-CAR-JACK-12-VOLT_W0QQitemZ250286616128QQcmdZViewItem?hash=item 250286616128&_trkparms=39%3A1|66%3A2|65%3A3|240%3A 1318&_trksid=p3286.c0.m14http://cgi.ebay.co.uk/ELECTRIC-2-0-T...50286616128QQc mdZViewItem?hash=item250286616128&_trkparms=39%3A1 |66%3A2|65%3A3|240%3A1318&_trk sid=p3286.c0.m14

Dont really its a bad idea. but thats just showing u can lift a car on 12v with the correct gearing and stuff. but with gearing the motor down the heavier you want to lift the slower it will lift

**maddox** · 2nd September 2008, 16:59

Bit heavy with 2.2kg Ben.

On 24V it does only a bit more torque than the 3 times lighter Speed 900.
A Speed 900 with a suitable gearing is better in any respect.

**neontetra23** · 2nd September 2008, 19:06

ok a speed 900, but what gearing should I use?

**swanaldo** · 2nd September 2008, 19:16

ben why dont you just get your wallet out and ask mario to make you a feather drive. he will do a good quality job and you will have yourself a drive ready to bolt into your featherweight chassis, whatever that might be.

if not why dont you work out yourself what size wheels you will be using and work out the gear ratio yourself.

its all good and proper asking all these questions to these roboteers who are more than willing to help but posting off the cuff remarks like ok a speed 900, but what gearing should i use after all the help and pointers you have been given directs me to believe you dont intend to build a robot at all.

all that said at least some good pointers are being posted. but then its nothing that hasent been posted before on this forum you just have to look.

**maddox** · 2nd September 2008, 20:31

A reduction of 66 to 1 is what I have calculated.
So, to make it easy and mechanicaly acceptible, a 2 stage gearing each stage 8 to 1, what gives us 64 to 1 gearratio.