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-   Technical Discussion (http://www.chiefdelphi.com/forums/forumdisplay.php?f=22)
-   -   RS775 Gearboxes (http://www.chiefdelphi.com/forums/showthread.php?t=89325)

Jared Russell 03-02-2011 07:44
Re: RS775 Gearboxes
 
We received notice that our CIM-U-LATORs have shipped. Hurray!

Bruneau1727 03-02-2011 15:49
Re: RS775 Gearboxes
 
Would you let us know what day you ordered them to give us an idea when ours might ship?

thefro526 03-02-2011 15:54
Re: RS775 Gearboxes
 
Quote:
Originally Posted by Bruneau1727 (Post 1015014)
Would you let us know what day you ordered them to give us an idea when ours might ship?
As of right now, 10 business days seems accurate.

Those who ordered on the 17th had their orders shipped on the 31st, orders on the 18th shipped on the 1st and orders on the 19th were shipped yesterday the 2nd.

AdamHeard 03-02-2011 19:41
Re: RS775 Gearboxes
 
Here is another good gearbox option for teams scrapping for an option for a 775.

betsy888 07-02-2011 21:16
Re: RS775 Gearboxes
 
Quote:
Originally Posted by AdamHeard (Post 1014462)

For low/no resource teams, a 550 is a drop in for the KOP FP gearbox.

For low resource teams, the 550 and 775 fit up to an AM planetary.
Can anyone tell me which AM planetary gearbox is compatible with the 775 banebot?

We are a low resource team that is desperate to find a compatible gearbox since Banebot has told us to not expect our gearbox until AFTER the robot's ship date!

Thanks!

Tom Line 07-02-2011 22:43
Re: RS775 Gearboxes
 
There is no directly compatible gearbox, however with minimal modifications the Andymark Planetary that takes the fisher price can be made to work.

jwfoss 08-02-2011 06:25
Re: RS775 Gearboxes
 
With a little bit of time you can do this:

FisherPrice Gearbox with RS775 Motor on it. Press the pinion off of the standard FP motor, drill/ream out to fit the RS775 shaft, press pinion onto RS775, and assemble.

http://www.chiefdelphi.com/media/photos/36278?

Jared Russell 08-02-2011 07:53
Re: RS775 Gearboxes
 
All:

Our CAD team has completed a model of the CIM-U-LATOR for those who need sizing info for design. See the attachment here: http://www.chiefdelphi.com/media/papers/2444

Jared

R3P0 08-02-2011 10:07
Re: RS775 Gearboxes
 
Quote:
Originally Posted by noa_n_f (Post 1001650)
It seems strange that banebots wouldn't have these available by now.

I'm looking to use four S775 to lift a ten pound arm thats about 60 inches long. Is this overkill, or would it allow me to maximize the speed of raising and lowering the arm?

Any suggestions for a gear ratio/gearbox and where I might be able to get it? The goal is to turn all four output shafts from the banebots motors into a single pivot to move the arm.

Thks in advance!
We put a banebot motor (500 series not the 775) in a dewalt trans, then used a 4 gear reduction to get 400:1 for the arm.

( now if only I could drill horizontally and level)

JesseK 08-02-2011 10:23
Re: RS775 Gearboxes
 
Quote:
Originally Posted by AdamHeard (Post 1015161)
Here is another good gearbox option for teams scrapping for an option for a 775.
Careful...

Quote:
Originally Posted by Robotics Marketplace
Stock Status: Backordered

Travis Hoffman 08-02-2011 11:35
Re: RS775 Gearboxes
 
http://www.robotpower.com/catalog/

Scroll down...

Note I didn't order this or check and see if it really was in stock, as the site indicates.

pfreivald 08-02-2011 12:34
Re: RS775 Gearboxes
 
Quote:
Originally Posted by Travis Hoffman (Post 1018406)
http://www.robotpower.com/catalog/

Scroll down...

Note I didn't order this or check and see if it really was in stock, as the site indicates.
Nice find -- My GoogleFu is pretty strong, but I was having a hard time finding in-stock gearmotors that are 775 compatible... I'm hoping the BB backlog this year results in other companies coming forward with compact, planetary solutions.

Variety = good. Availability = essential!

betsy888 08-02-2011 13:04
Re: RS775 Gearboxes
 
Quote:
Originally Posted by jwfoss (Post 1018260)
With a little bit of time you can do this:

FisherPrice Gearbox with RS775 Motor on it. Press the pinion off of the standard FP motor, drill/ream out to fit the RS775 shaft, press pinion onto RS775, and assemble.

http://www.chiefdelphi.com/media/photos/36278?

Thanks for the feedback! Do you know approximately what the gear ratio of this older FP gearbox is? We are looking for something between 50:1 - 100:1.

pfreivald 09-02-2011 08:33
Re: RS775 Gearboxes
 
256:1, I believe. You can remove the last stage to speed it up, though I don't remember exactly what that does to the gear ratio.

ezygmont708 09-02-2011 10:53
Re: RS775 Gearboxes
 
Quote:
Originally Posted by Travis Hoffman (Post 1018406)
http://www.robotpower.com/catalog/

Scroll down...

Note I didn't order this or check and see if it really was in stock, as the site indicates.
Our team ordered from Robot Power Yesterday, and I have received the e-mail that it will ship out this afternoon. Seems like a great site to deal with, but they only ship on Wed. and Friday.


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