28-05-2010 00:21

LLogan

Re: pic: aces high drive base concept

Well, first off, the middle wheel will spin in a different direction than the two outer wheels because of the way your chain is right now. I also don't think that chain-run would work (even if you neglected the fact that the middle wheel is spinning in the opposite direction) without any sort of tensioning system. Even then it would have a higher chance of slippage because there isn't adequate chain-wrap.

In my team's past experience, we have always found it difficult to precisely drill holes into 80/20. When trying to offset the holes by 1/8th of an inch (which I am assuming your middle wheel is) the drillbit tended gravitate towards the channels of the 80/20 because it's unlike drilling into a uniformly smooth surface. However, we centered everything manually and used a drill-press.

28-05-2010 00:23

BJT

Re: pic: aces high drive base concept

that middle wheel is also going to go the wrong direction. otherwise it's pretty nice.
I should know that I type too slow to get the first post

28-05-2010 00:23

sdcantrell56

Re: pic: aces high drive base concept

I like it for a simple drivetrain. A couple things to think of. How are you actually going to tension the chain? I see guides but nothing adjustable. Also it might be easier to drop the transmission down between 2 of the wheels and just have 3 separate chain runs. It would lower the Center of gravity as well as increase redundancy a bit. This design doesnt look like you're really using the 80-20 adjustability so why not just use plain aluminum tube? You would save weight and potential failure points from loosening fasteners if you weld it

28-05-2010 00:41

Chris is me

Re: pic: aces high drive base concept

Quote:

Originally Posted by sdcantrell56 I like it for a simple drivetrain. A couple things to think of. How are you actually going to tension the chain? I see guides but nothing adjustable. Also it might be easier to drop the transmission down between 2 of the wheels and just have 3 separate chain runs. It would lower the Center of gravity as well as increase redundancy a bit. This design doesnt look like you're really using the 80-20 adjustability so why not just use plain aluminum tube? You would save weight and potential failure points from loosening fasteners if you weld it

28-05-2010 11:39

kinghashbrown

Re: pic: aces high drive base concept

Quote:

Originally Posted by LLogan Well, first off, the middle wheel will spin in a different direction than the two outer wheels because of the way your chain is right now. I also don't think that chain-run would work (even if you neglected the fact that the middle wheel is spinning in the opposite direction) without any sort of tensioning system. Even then it would have a higher chance of slippage because there isn't adequate chain-wrap. In my team's past experience, we have always found it difficult to precisely drill holes into 80/20. When trying to offset the holes by 1/8th of an inch (which I am assuming your middle wheel is) the drillbit tended gravitate towards the channels of the 80/20 because it's unlike drilling into a uniformly smooth surface. However, we centered everything manually and used a drill-press.

Quote:

Originally Posted by Chris is me If you weld or drill through 80/20 in this fashion you get pretty much the same weight as 1/8 wall tube and adjustability for whatever you put on top of it. Worked for Shaker this year. It might be easier to run a Supershifter in the middle.