modified toughbox

[gorrilla]

well we were thinking about changing the gear in the back which is connected to the drive sprocket with a smaller one to bring the reduction to about 2-1 or maybe even 1-1 and then putting smaller sprokets on the wheels because this year we were very slow compared to the other teams at only 9-10 fps because our am 2 speeds were stuck in low gear wich sucked and we couldent put it in high and leave it or the chains would slip

[gorrilla]

update)(

weve done it we removed the second stage and given our gearbox a 1-3 (increase)?? by doing the math we have founs that one on each side with 2 cims would give us 23+fps or more depending on the sprockets on the wheels

[billbo911]

I do know for a fact the Team 1147 did exactly this. From the reports I had, it was really fast!

It did take some rework of the Toughbox to get the gears lined up, but it was worth it. I believe the final gear ration is 6.38:1.

I'll see if I can get one of the students to post up on how they did it and how well it worked.

[kramarczyk]

Originally Posted by gorrilla

update)(

weve done it we removed the second stage and given our gearbox a 1-3 (increase)?? by doing the math we have founs that one on each side with 2 cims would give us 23+fps or more depending on the sprockets on the wheels

How's the turning?

[gorrilla]

i havent tested it on the robot yet but as soon as i get a 6-wheel drive going i will

it will probobly be done sometime this month or next depending on how much time we work and what not


p.s. the 23+ fps mark was the speed one wheel would turn if we had to cims on each side so with 4 to 6 wheels and the correct sprocket size we should be around 20 to 26 fps...