ebay links

**mattsdragons** · 27th March 2011, 08:23

What's the beat way too keep 750's cool or don't they need it?

**jonny** · 27th March 2011, 15:18

They have induction fan built in. External fans an heatsinks can be used though

**RogueTwoRobots** · 27th March 2011, 16:47

Check out some of the other stuff the guy is selling. Says he's giving up model engineering, he's put up some scooter motors, 4QD boards and a decent looking lathe and mill too :shock:

**psycho_fling** · 27th March 2011, 19:38

i thought that too jamie

**jonny** · 31st March 2011, 20:23

http://cgi.ebay.co.uk/DUFF-NORTON-24V-4 ... 605wt_1141

they're back on ebay again!

**Roland** · 1st April 2011, 21:11

But what does it do!?

I really want one and I don't know why because I'm not even aware of what it does, it just looks like something that would do something awesome.

**jonny** · 1st April 2011, 21:14

it's a linear actuator. which is used by most featherweight crushers and lifters. basically it's a motor+gearbox+threaded rod assembly, when you put voltage through it a peice of metal will extend out 4 inches (the length it extends is called the stroke) and it will have 250lbs of force behind it.

**Roland** · 1st April 2011, 21:27

It doesn't tell you the dimensions so how do you know if 4 inch is a decent size? That sounds really awesome by the way. Bear this in mind for future creations.