Wow, Ive been away on vacation so I havent been able to respond to your questions. But here it goes.
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We used a one thousands under reamer for pins.
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.25" in diameter, and 1.25" long. The hub piece is .5" thick.
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The shaft is .75" hex (6 sided). we did that for better power transfer.
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We need about .75" of stroke to shift.
- The reason that the CIM motor is driving that gear, is because it is a different size gear. The sprokets that are given in the kit are 3/8ths inch face with a 14.5 degree pressure angle. So we decided to get a sprocket that can be used with the kit CIM sprokets. But in the other shifting gears we wanted them to be stronger, so we went with a .5" face and a 20 degree pressure angle. That means that the kit sprockets will not work with the other gears in our tranny. We want it to be tottally bullet-proof, so we over built it.
-The holes are reamed out to size "F", which I think is about 3 thousands over .25". But, we need to go a little larger, so we'll probably have to use a hand reamer.
- There are 12 holes in each gear, where as the hub has 4.
-The shaft is connected to the "shifting shaft" by a .3125" ball bearing. We used a snap ring to hold the bearing into place, and it works REALLY WELL. I think its the best way to hold in the bearing, its quick, its simple, its light, and its easy to do.
I am very sorry for my terrible grammar and spelling skills. And for some reason I cant post replys, so if the webmaster sees this, can you send an activation thing to my new e-mail.