Bitza Mk2

[jonny]

Cool, how much weight do they add to the drum?

[RogueTwoRobots]

That's a really brilliant example of the Bitza mantra! Can't say I'd have ever considered using a spare weight for something like that. If I had access to a lathe, I'd have probably machined that from stock. Very nice, I like it

[PJ-27]

Dan's going to weigh it when complete, I'm hoping it hasn't added 56lbs though!

With any luck the drum will end up around the 3kg figure. We're running a near enough 2:1 ratio, anyone have any idea what sort of rpm to expect from a car fan motor at 24v? Spec sheets are impossible to come by.

Cheers Jamie, looks like Dan's done a neat job!

[Ellis]

I am guessing that they're quite fast, since well, they drive fans. Of course, even if they spin at just 3000rpm, at 24v you're going to get more like 6000rpm, so either way it'll spin pretty fast.

I am really interested to know this. I have a stonkin' great one from an ancient landrover that weighs several tons, could be an epic axe drive motor!

[Laser]

Thats cool

[billy breach]

the drum is very impressive mate....i'm just thinking about how i'm going to defend against it

[PJ-27]

Dan has been working hard and has made up some braces for the shafts from the gearboxes, they look very impressive.

[PJ-27]

I should start wiring up BitzaMk2 soon but just want to check a couple of things.

Firstly, GiantCod is all out of DSM2 Rxs and I need a few, anyone know any good alternatives? Using a Spektrum DX5E?

Secondly, I think it was mostly dumb luck that Bitza Mk1 actually failed safed, but I don't want to leave it to chance this time.
Plus the fact I'm using a relay to control the weapon, how do people go about getting them to fail safe?
Using Electronize ESCs.

Cheers!

[RogueTwoRobots]

Firstly, GiantCod is all out of DSM2 Rxs and I need a few, anyone know any good alternatives? Using a Spektrum DX5E?

Take your pick: http://www.ebay.co.uk/sch/i.html?_from= ... Categories

[PJ-27]

Cheers, but these aren't £6 each though... Plus I don't know what they are like fail safing.

You used a relay in Drumroll right? How did you get that to fail safe?