Cim-u-lator Gearbox

[Feroz1325]

Thank you so much CD-community!!! You guys rock!
I was just wondering...from the CAD and pictures it seems as if the output shaft isnt keyed! Can someone please confirm or deny this?
Also the 2.7:1 ratio might be good for this years shooter, more rpm under equal compression should equal a higher distance.
Again Thanks!!!

[Joe Johnson]

Originally Posted by Feroz1325

Thank you so much CD-community!!! You guys rock!
I was just wondering...from the CAD and pictures it seems as if the output shaft isnt keyed! Can someone please confirm or deny this?
Also the 2.7:1 ratio might be good for this years shooter, more rpm under equal compression should equal a higher distance.
Again Thanks!!!

The output shaft is definitely keyed. As it turns out, all my blurry pathetic pictures don't show it very well. You can barely see it in one picture in the gallery though -- attached.

Cheers,
Joe J.

[Feroz1325]

Dr.Joe your pictures are nowhere near pathetic....seeing as before your pictures my team and I had no idea what the CIM-U-LATOR looked like (our teacher sponsor even thought it was a scam ). Thank you very much, how has your experience with the gearboxes been? Any hints, pointers or things to look out for?

[Joe Johnson]

Originally Posted by Feroz1325

Dr.Joe your pictures are nowhere near pathetic....seeing as before your pictures my team and I had no idea what the CIM-U-LATOR looked like (our teacher sponsor even thought it was a scam ). Thank you very much, how has your experience with the gearboxes been? Any hints, pointers or things to look out for?

I haven't put them to use as I found a way to do what I want without them. I've never put power to them.

And yet, they have a surprisingly high quality feel to them. I think that for what they do, they are could be pretty good.

Joe J.

[marccenter]

Cim-u-lator (550 comments),

I used the Banebots $30 coupon to offset the of purchase 2 - 550 motors and the 550 cim-u-lator gearbox. I hand assembled the unit and thought it went together well.

If you are planning on using 2 motors in your Cim-u-lator like I had planned you should be aware that you are missing some components. You will need a 2nd pinion gear that Banebots sells (PN missng here) as well as 2 small machine screws and lock washers (PN??) to mount the unit. The unit comes equipped to mount just one motor.

If I had to do it again, I might have used my Bane Bucks to get the 775 Cimulator and a 775 18 volt rated motor and try to use this configuration in a belt driven application for the shooter which would keep all 4 CIM motors available for traction/propulsion

[GarrettF2395]

Originally Posted by Joe Johnson

I haven't put them to use as I found a way to do what I want without them. I've never put power to them.

And yet, they have a surprisingly high quality feel to them. I think that for what they do, they are could be pretty good.

Joe J.

Joe,

Do you have an opinion on the quality of the Cim-sim?
It has bad reviews on AM and I am mostly just curious.

[UkuleleGuy]

We received a 500-type CIM-U-LATOR today in the mail, and I took a few pictures.

So far I really like it, according to my calculations based on the RS550 spec sheet, it should have an rpm of 7100 and a stall torque of 370 oz-in.
Compare to the CIM motor's 5310 rpm and 340 oz-in of torque.

Only downfall I see is that it requires two motor controllers.

Anyway, my two cents.


Attached: Kit contents, detail of housing

[mehrkam]

We have had some trouble with a dual CIM-u-lator using 2 550s. For some reason the motors overheat extremely fast. We mounted this on our test shooter and instantly had smoke coming out of them. The only way we could run them was to put the big cooling fan blowing down on top. Even with that, the motors toasted after some test runs and case shorted.

Have you had any success with yours?

We have decided to stick with the single CIM-u-lator using the 775-18V with cooling. The final design will have cooling fins installed on the motor.

[Ether]

Originally Posted by mehrkam

For some reason the motors overheat extremely fast.

probably for reason#3:

http://www.chiefdelphi.com/forums/sh...3&postcount=15

[billbo911]

Originally Posted by mehrkam

We have had some trouble with a dual CIM-u-lator using 2 550s. For some reason the motors overheat extremely fast. We mounted this on our test shooter and instantly had smoke coming out of them. The only way we could run them was to put the big cooling fan blowing down on top....

Did you make a provision for allowing cooling air to enter the front of the motor?
If there is no air flow through the motor, it's going to heat up in a hurry!

As an example, the FP motors come with this orange plastic ring around the central hub of the motor on the output shaft end. If you leave that ring in place when mounting them on a CIM-Sim or CIM-u-lator, then air can flow in. If you remove it, the motors stop breathing.

One simple option you can try is drilling four holes in the motor mounding plate in alignment with the vents in the motor. The larger, the better..... to a point of course.

[artdutra04]

Originally Posted by billbo911

Did you make a provision for allowing cooling air to enter the front of the motor?
If there is no air flow through the motor, it's going to heat up in a hurry!

I don't have a CIMulator in front of me, but judging from the attached photos a few posts up, this gearbox doesn't appear to have any holes or pockets to allow airflow into the motor vents. It seems odd that this feature would be omitted/forgotton on the CIMulator, as the P60 gearbox I have on my desk has two pockets on either side of the center motor boss to allow air to enter the motor vents from the side of the gearbox.

[Ether]

See attached screenshot from Banebots web page for the CIMULATOR.

Does this have any bearing on the cooling issue? I've not seen the CIMULATOR so it's unclear why the 775-18 is the only recommended motor.