Spinner motors

ive heard that slot car motors can be used as antweight spinner weapon motors.

is this true? and what sort of voltage, speed, torque am i looking at in a typical slot car motor.

yes it can be used.
http://www.antweight.com/links.htmlhttp://www.antweight.com/links.html
there is a link to a good one (stinger) if you scroll down a bit. I will leave it to the spinner guys to give you some better info.

I normally use the Ninco Stinger MilitANT, CombatANT, ANTicyclone.
voltage 12v
speed 31000rpm
current 320ma
torque 226gms/cms
weight 24gms
supplier pendelslotracing.co.uk

how about one of these? http://www.sussex-model-centre.co.uk/item.asp?ID=2572http://www.sussex-model-centre.co.uk/item.asp?ID=2572

400-700 gram?

for an ant?

its weighs 43g
but you need the proper controller bit slow for brushless there are better out there

I have just got a brushless motor from the USA that does 65000 revs per minute at 12V. I have no way to verify this but it really does sound fast. Now all I need is a disc balanced enough to run at that speed.

Are you about to run an ant on 12V?

Thats not unusual Danny.

Pete, I think it might be worth constructing a dynamic balancer- there are some good plans around on the web, most seem to be an attachment built to be used on the lathe bed- model gas turbine sites are probably a good place to look.

I was considereing getting back into ants (I havnt built anything since WS4) but Im not so sure I will now :-p

Aha okey, can the reciever and servos handle that current or ist there a seperate battery for the reciever?

Most ants that use 12v (12.6v if you want to be accurate, 3 x Lithium polymer cells) are spinners, and as such have a ESC for the weapon motor, this normally has a voltage regulator onboard, which you then use to power your reciever and drive servos. If you want to run more than about 6v in an ant without an ESC, then you simply take 2 lines off the battery, one of which goes directly to whatever it is youre running at the higher voltage, the other of which goes through a 5/6v regulator to the RX and other servos.

I see

Some servos can supposeldy take it, usually the larger ones. The micro servos get upset above 6V really. Some have had success at 7.2V. It all seems a bit hit and miss really, but yes, the rest of the ant is run off the BEC

Eddy that sounds like a good idea. I have a static prop balancer which has been good enough up to now (max 35000 rpm) but if I do get vibration problems I might just look into that.

yay my stinger arrived today :)

nice pic of it sitting on the new ant (wheels are just there to give and impression)

http://s4.invisionfree.com/Antweight_Forum/index.php?showtopic=66&st=0&http://s4.invisionfree.com/Antweight...topic=66&st=0&

Having said that, model gas turbines are usually statically balanced, and they run up to about 160,000rpm, so it works, with a little bit of patience. Just a thought :)

what do most people use to connect there spinner weapons to there motors? I was thinking of just placing the(thin undercutter)blade directly on the motor.Mainly to save space& up the rpms :)

Most antweight spinners have the disk/blade mounted directly onto the motor output shaft, the only exceptions I can think of are Pixiedust, a FBS that uses a small gearbox to up the torque, Duff (I think) who again has a small gearbox, and Zenith (mine) who uses a 3:1 belt reduction using pulleys and belts from old cd-rom drives.

and DBA(a.k.a. KillSaw) which uses a 1:3 gear reduction

*slaps forehead* How could I forget DBA :) My apologies, Tim.

youll pay for that :)

ill go direct drive then, that makes it a lot more fun :)

how does one of those ninco stingers (nc-3 or nc-5) compare to an fa-130 motor (the little blue capped ones you get with the tamiya gearbox kits)?

they are supposed to have twice the torque of two fa-130s combined and im interested in using one in my 450g sozbot, to spin a 150g 90mm disk through a 2:1 belt reduction.

not sure what voltage they run at but i was planning a low voltage like 4.8-6v. reckon a ninco would fit the bill?

on a low voltage you might run into troubles. Stingers etc are designed to run at 14.8v iirc. So on 4.8v you are looking at 32% of there intended voltage.

The standard tamiya motors might be better.
Regards
Ian

ah that could be a problem, can any one recommend a high power motor that runs on ~4.8v and weighs about 50g max?

a BB280 (54 gr), or a 280 RACE(40 gr)

if your into home-built stuff, why not check:

http://homepages.enterprise.net/jayjay/cdrom_motors.htmhttp://homepages.enterprise.net/jayjay/cdrom_motors.htm

Brushless motor that gives approx. 5 amps, 24 grams, and almost costs nothing
(except the ESC ;))
If they can hold 280 gr on half throttle, they should be ok for ants.

EDIT: you can just adjust windings and thickness of wire to get the max. power on 4.8 v.

I used a motor out of a CD-Rom once, it was slightly different to the one in the link, the one I used was what moved the CD tray in and out, but when I put it into my rather over-weight super-antweight it seemed to provide a helluva lot more torque - or in this case, hitting power - than a standard hobby sized motor. I dont know how handy it would be for antweights but it could be powered off of a 9V battery which saved some space and weight compared to the 6V battery for the hobby motor. Its also quite flat compared to the hobby motor which was useful if the design was particularly slim. Hopefully theyll come in useful to someone :)

Ive made an ant with a harddisk motor once:
http://www.bugs.nl/images/Harddrive1.JPGhttp://www.bugs.nl/images/Harddrive1.JPG
http://www.bugs.nl/images/Harddrive2.JPGhttp://www.bugs.nl/images/Harddrive2.JPG
It was withing the weight limit, but no armour or anything. I have to update the micro because I speedhacked the servos and now its uncontrolable.