Feather weight spinner questions

[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.

[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!!

[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.

[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.