[Arefin Bari]

Ira, first I must say that you have done a great job with that chassis. There aren't a lot of kids who take there time and build a chassis during summer to get their hands dirty with simple things.

What size sprocket are you using on the wheel? (it's hard to see). Have you done any calculation on this and come up with how fast this little beast will be going? It seems like you are using pvc as spacers. If your team is in need of some sort of thing to use for spacing, I would suggest the shaft collars that can be bought from McMaster. It's not that expensive and it serves you well.

I also see only two speed controllers, does that mean you are using just one cims for each side? Another thing I wanted to talk about is CG. I can't stress this enough. Our team worked on cg very closely this year and we were able to build a robot that you can pick up <50 degrees and let it go and it will still not flip on it's back. We also had a robot that went under and tried to flip it. I know this is just a summer project, but there is a lot more to a chassis other than just wheels, chains, sprocket, transmission. If you are planning on putting more work into this, keep going, I am sure your team will be happy to use what you came up with. On top of that, it's very simple and we all like simple things. Kuddos to you. =)