Boring Brick

[maddox10]

That one is a standard 12 or 24V relais. Fine to upgrade an old electronise or to make an RC switch something heavier, like a hefty solenoid from a valve. But for an electric axe that works it's rather a waste of money.

In Kashei we use a piece of custom electronics, to fire a Speed 900 @6S. But the setup is prone to molten motors, so it needs more R&D.

Best bet atm is to use the TZa85 hacked speedo to control the motor of an electric axe.

[mrsam]

Okay thanks once again Mario

[shakesc]

That one is a standard 12 or 24V relais. Fine to upgrade an old electronise or to make an RC switch something heavier, like a hefty solenoid from a valve. But for an electric axe that works it's rather a waste of money.

In Kashei we use a piece of custom electronics, to fire a Speed 900 @6S. But the setup is prone to molten motors, so it needs more R&D.

Best bet atm is to use the TZa85 hacked speedo to control the motor of an electric axe.

The hacked TZ85a is a good starting point but it won't be enough to avoid burn outs.
Currently working on code for an Arduino to sit between the receiver and TZ85a.
Managing the limits of motor actuation is important along with other things such as motor stall, soft start etc.
Just need to get some time to finish

[mrsam]

Does anybody have any tips on shortening a length of chain?, i've got some 6mm stuff that is way longer than i need

[Ellis]

We just used a hammer and a thin-strong-something to knock out pins in and out accordingly. Naturally, that got boring quite quickly, and eventually we bought something similar to this: http://www.ebay.co.uk/itm/TK012-6mm-...item53f9ff7fb5

Better than the hammer and pliers approach... but not by a lot, haha. It'll do the job but is still mighty fiddly.

[maddox10]

A chainbreaker is your friend. A tool any decent bike repair shop needs.

[mrsam]

I have finally got my act together and started getting all of the parts together ( left it a little late but oh well), here's what i have so far

[mrsam]

Radio gear and HDPE from direct plastics should be here early next week so i can start building so updates over the next couple of weeks will be a plenty

[mrsam]

I should add the parts are just laying where i could be arsed to put them, when it comes to building it will be a better layout

[mrsam]

As i'd rather not fail a tech check at an event for something stupid would it be possible for somebody to put up a wiring diagram so i know where to start, it would be for 2 motors, 2 esc's, 2 batteries in parallel, mixer, power light and link. Would be much appreciated.

[mrsam]

I've got hold of a 250w scooter motor on the cheap and am considering putting it to use for an axe, any ideas on cheap ways to run the axe? when i say cheap i mean cheap

[Flag Captured]

Depends what cheap is.
I guess you could always use sprockets and chains, and they're free/near enough free if you know what you're doing and can find what you're looking for easily from bikes or whatever, but it all depends on your motor. What RPM is it? If it's a higher RPM, naturally you'll more sprockets and chain or gears to gear it down more to a usable speed, which will be more expensive to do if you can't find the right parts as scrap or otherwise!

[maddox10]

On motorcontrol.
Double pole double trow relais. And not the small cheap ones from cars or so, but big sturdy heavy things.

TZ85a could do the trick too. But that's a risk.

[Niels - Team K.a.L.M.]

As i'd rather not fail a tech check at an event for something stupid would it be possible for somebody to put up a wiring diagram so i know where to start, it would be for 2 motors, 2 esc's, 2 batteries in parallel, mixer, power light and link. Would be much appreciated.

Considering there is pretty much only one way of hooking it all up to get the machine working you shouldn't have to worry about failing a tech check. Do try to shrinkwrap all your soldered wire connections or solder connectors between your leads.

simply put, connect both plus/positive sides of your packs together using connectors. Straight after that comes your removeable link. From there you can hook up everything (as long as you use the positeve leads offcourse). So in this case 3 esc's (motor left, right and axe) and your led. (the longer wire on the led is the positive lead I believe)
Your negative leads don't need a removeable link and can be hooked up straight to your components.

[mrsam]

I've had a quick look online and the only dpdt relays i can seem to find are rated for no more than 30 amps, does anybody have a recommendation