Replacing speed 900s

[team_mayhem]

hi
im using speed 900s in 2 of my robots at the monent but apparently there being discontinued so does any one know of any motor with similar specs if not the same specs and around the same price

[RogueTwoRobots]

Where do you get these motors from Matt and for how much? I know theyre being discontinued but I might take the gamble and invest in a few for Drumroll depending on how the replacement HTIs perform

[team_mayhem]

i only know of 2 palces you can get them from in the uk i brought up 1 of the shops stock today so i think only http://www.westbourne-models.comwww.westbourne-models.com have them in stock as far as i know and there £38.25 not including postage

[grant_ploughbot]

Jamie - I may be able to get some from graupner, aslong as they have some left in stock. I got some not too long ago for Matt Davey - but they said they may run out at any time.

[maddox]

The Graupner site says the 900s are ‚45 atm. Those gained ‚14 since last year.

[robotwars]

what gear ratio do people normally use with these?

John

[maddox]

Team RCC is using the Speed 900s with 2 gear ratios and different wheel sizes.

4.5-1 and 6-1. Both MSR gearboxes with KOS ali gears in/on the wheels.

But the immense torque- 1.1Nm on 12V 51amps makes that you cant get that power to the ground with a 4.5-1 gearing in a 130mm wheel.
What gives a theoretical top speed of 36km/h. Wheelspin galore. Powerslides all over.

[robotwars]

cheers mario,

wheel spin galore is what i want for this project !!

[RogueTwoRobots]

Dont know what the average cost of Speed 900s are these days, but when I get round to buying mine I am planning on getting them from here:

http://quantrum.co.uk/redbankmodels/speed-900-bb-p-759.htmlhttp://quantrum.co.uk/redbankmodels/...-bb-p-759.html

At £26.59 a motor (exc P&P) its not too bad a price I dont think. But if anyone does buy any from here, make sure to leave two behind for me pleez

[psycho_fling]

i think mario can get them cheaper not sure though