Feather weight spinner questions

[Eventorizon]

Hobby King has been broken for several days on the UK server end. I've been trying to order some receivers but I can't 'add to basket'.

Given how light it is, I would say go for a 3:1 ratio and just live with a slightly longer spin up time. Your weapon won't have much punch otherwise given how light it is.

[webby]

OK thanks for your help, that was my theory with a lighter disk = faster speeds and quicker spin up time.
so what size timing pulley would i be looking at on the motor and disk?

Thanks

[typhoon_driver]

you haven't seen how fast a brushless will spin up a disc. Ignore previous experience with brushed motors and their wattages. Make the disc 2kg and you will still be amazed at how quick it spins up.

[Ellis]

I run a 1.7kg drum on this motor: http://www.hobbyking.com/hobbyking/s...arehouse_.html on a 5s LiPo and 3.2:1 reduction.

On a hard start it very briefly pulls about 2.5kw and sends the drum to 9000rpm (from 0) in 1.25 seconds.

[typhoon_driver]

exactly, do you really want to have Ellis saying that his is bigger than yours?!

[calumco]

jumping back abit- but i personally stand by speed 900s and wouldnt rule them out. Never failed or anything running TS3s beater and the hits thats dished out over the years have done the job

[harry hills]

Think the only reason they are written off is because you can't get them anymore. Other than that they are perfec.

[maddox10]

What I would try.

http://www.beltingonline.com/10-toot...ey-al27t5-4916
http://www.beltingonline.com/36-toot...ey-al27t5-4932 *
http://www.beltingonline.com/36-toot...ey-al27t5-4932

*But I prefer a smooth pulley on the disk. Call it a quirk.

[Eventorizon]

*But I prefer a smooth pulley on the disk. Call it a quirk.

This interesting. I know most people run a smooth pulley on the weapon. Conker and Binky seem to be in the minority. Conker has toothed pulleys on both, which is why it can reach insane speeds despite the wind resistance, and Binky had a one way bearing, its still good after 2.5 years of combat and testing.

[webby]

Hahaha its not about size! its what you do with it! ;-)
And the link doesn't work for the motor Ellis :/

Atm im looking at 36T on disc and 12T on the motor, the only ones i can find like this are for a 11mm belt, would that thickness be ok in a fight?

Thanks

EDIT- Didnt realise there was another page!!

[webby]

Ok, thanks for all your help, ordering pulleys now.

With a 10t and 36t pulley how can i calculate how far away from each other they should be and how long the belt needs to be?

Thanks!

[harry hills]

http://www.technobotsonline.com/timi...alculator.html

Go nuts.

[Eventorizon]

Atm im looking at 36T on disc and 12T on the motor, the only ones i can find like this are for a 11mm belt, would that thickness be ok in a fight?

The T5 HTD belts come in 9mm, 15mm and 25mm. All 3 are in use. The wider the belt is the less likely it is to break, but it also presents more of a target and takes up more width. The 9mm is more than strong enough but if you are using a friction drive, its reduced surface area will be a problem.

[grant_ploughbot]

This interesting. I know most people run a smooth pulley on the weapon. Conker and Binky seem to be in the minority. Conker has toothed pulleys on both, which is why it can reach insane speeds despite the wind resistance, and Binky had a one way bearing, its still good after 2.5 years of combat and testing.

Having a smooth pulley is purely to take alot of the shock out of the motors when you impact something andd unless you have it really loose wont make any difference to the speeds your disc can get up to. 720 has the highest top rpm spinner at the moment and that's on a smooth pulley, and Rango has about the fastest spin up time again on a smooth pulley. Its all personal preference but its there to help the rest of the system from shock by adding abit of slip.