Is this possible? (Gears and chains)

[TJ4nier]

I probably /am/ talking about sprockets, but I'm not totally in to using the right terms. There would be no whipping around to re-engage. This sprocket would only be used to get another gear moving. Once that's moving, it's done with its job for the match.

But there's still the question as to how to attach it...

[MrForbes]

If you are planning on using a window motor, you might do some research and see if you can figure out what type vehicles use the motors in the KOP, then visit your local friendly car dealership and see if you can get a "regulator assembly" to use with the motor. It will have a sheetmetal partial gear, with a bracket that will mount the motor and let the whole thing attatch to a surface.

[maltz1881]

Why try it. We are a team who is very limited as well as many many teams are. If it is that tight take a day and have the kids do a very quick fundraiser, such as a bottle drive if your state does take part in that. We have 12 kids on our team and we can raise a couple hundred dollars in a few hours. Ask a team around you as well. Teams in our area have set up a system where we help each other if 1 is looking for something. Is a parent willing to be a sponsor by purchasing them for you?? You want to be successful in your first year and by that I don't mean winning anything (although that would be great!!!) but successful by moving on the field and actually competing. Don't put your team at risk by not finding the proper gears and such. I know how hard it is and it can be flustrating when you don't have any money. Ask around and I am sure there will be a team in your area that is willing to help you out. Lots of larger teams have things just laying around and would be willing to give it to you for a thank you or a batch of cookies. Good luck and remember this is fun!!!!! If you have hair left at the end of the season then you have done well!!!!

[Kevin Sevcik]

Okay, followup question to help solve your problem. Mounting depends on how much load will be on the sprocket/gear. If there's a fairly light load on it and it's large enough, I'd just bolt it directly to the plastic coupler for the keyang motor. If it's not that big.... Well you might be able to remove the gear from the keyang and attach your sprocket directly to the shaft of the keyang with an ugly but possibly functional combination of JB Weld, a roll pin, and a hose clamp. Mostly it depends on the particular details of the mechanism.

[Elgin Clock]

http://www.cabaret.co.uk/education/geneva.htm

Good stuff.

Think of your half gear as the Yellow part and your full gear as the blue one.

I would like to see you try that and see if it would actually be effective.

[DonRotolo]

In most cases, you need the full hub (the part surrounding the hole in the middle) of the sprocket to mount it to a shaft. You can also make the hole bigger, or drill holes to bolt the sprocket to something.

In any case, you cannot depend upon friction or an adhesive to prevent the sprocket from spinning on the 'shaft' - you must use a roll pin, or set screw, or square/woodruff key, or some other method.

Considering that, you might just use the whole sprocket. As others have stated, if you really can't afford a sprocket, ask here. Many teams have extras lying around, and will happily share with you.

As maltz1881 stated, success will be getting a robot that passes inspection and can move on the field. Everything after that is gravy.

It's not about the robot - search on that phrase to understand what that means.

Don