Chief Delphi - Gear ratio of CIM-U-LATOR for banebot-775

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swapnil94

28-01-2012 23:45

Gear ratio of CIM-U-LATOR for banebot-775

Can anyone tell me the gear ratio for CIM-LATOR banebot-775?

^^ this gearbox

Andrew Lawrence

28-01-2012 23:48

Re: Gear ratio of CIM-U-LATOR for banebot-775

As said on the banebots website, it's a 2:7:1 reduction.

swapnil94

29-01-2012 00:00

Re: Gear ratio of CIM-U-LATOR for banebot-775

it says

Quote:

Reduction : 2.7:1

is 2.7:1 same thing as 2:7:1?:confused:

kevin.li.rit

29-01-2012 00:02

Re: Gear ratio of CIM-U-LATOR for banebot-775

Quote:

Originally Posted by swapnil94 (Post 1115667)

it says

is 2.7:1 same thing as 2:7:1?:confused:

Yes. it is 2.7:1 he made a typo. And you can always count the number of teeth on each gear. 27 tooth and 10 tooth.

Andrew Lawrence

29-01-2012 00:04

Re: Gear ratio of CIM-U-LATOR for banebot-775

Quote:

Originally Posted by swapnil94 (Post 1115667)

it says

is 2.7:1 same thing as 2:7:1?:confused:

Quote:

Originally Posted by Coffeeism (Post 1115670)

Yes. it is 2.7:1 he made a typo. And you can always count the number of teeth on each gear. 27 tooth and 10 tooth.

Yeah, typo. It's 2.7:1. For a single stage gearbox, it's hard to get 2:7:1. :)

swapnil94

29-01-2012 00:10

Re: Gear ratio of CIM-U-LATOR for banebot-775

Ohh

so 19500 rpm would be geared down to 7800 rpm. right?
just making sure :P
thanks

kevin.li.rit

29-01-2012 00:12

Re: Gear ratio of CIM-U-LATOR for banebot-775

Yes.

kevin.li.rit

29-01-2012 00:18

Re: Gear ratio of CIM-U-LATOR for banebot-775

Quote:

Originally Posted by swapnil94 (Post 1115678)

Ohh

so 19500 rpm would be geared down to 7800 rpm. right?
just making sure :P
thanks

Oh and FYI, I'm pretty sure that the motor you are using is the RS775-18... If so then it only spins at 13000 RPM at 12 volts giving it about 4800 rpm out of the CIMulator.

Ether

29-01-2012 01:37

Re: Gear ratio of CIM-U-LATOR for banebot-775

Quote:

Originally Posted by swapnil94 (Post 1115678)

Ohh

so 19500 rpm would be geared down to 7800 rpm. right?
just making sure :P
thanks

Three problems:

1) The free speed of the RS550-12 is 19300. That's not the motor you are planning to use is it?

2) 19500/2.7 = 7222, not 7800.

3) RS775-18 free speed is 13,000 not 19500 13,000/2.7 = 4815

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