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View Full Version : 783's Gearbox

Harrison
30-01-2003, 00:56
Here are 2 teasers of our gearbox (if you put the 2 pics together, you can basically see all of it - minus the shifter (hi and low speed) because it is not attatched yet.

http://www.chiefdelphi.com/forums/pictures.php?s=&action=single&picid=3524&direction=DESC&sort=date&perrow=3&trows=4&quiet=verbose

http://www.chiefdelphi.com/forums/pictures.php?s=&action=single&picid=3504&direction=DESC&sort=date&perrow=3&trows=4&quiet=verbose

If you want to read the black-board where we did some number crunching (note: several of those numbers have changed):

http://www.chiefdelphi.com/forums/pictures.php?s=&picid=3507&sort=date&quiet=verbose&direction=DESC&perrow=3&trows=4&action=single

And finally, our wheels (all home made....we havn't put the final tread on it yet - we are still testing what works the best)

http://www.chiefdelphi.com/forums/pictures.php?s=&picid=3503&sort=date&quiet=verbose&direction=DESC&perrow=3&trows=4&action=single

Put all that together, and it will be 2 sexy gearboxes (one on each side :p)
Caleb Fulton
30-01-2003, 08:23
That looks nice!

What are you going to use to shift it?
Gope
30-01-2003, 08:32
Wow. That thing's beefy. I guess you really listened when they said "build to endure."

Kinda bulky, but looks really nice.
Harrison
30-01-2003, 14:57
Originally posted by Caleb Fulton
That looks nice!

What are you going to use to shift it?

We're using a small pneumatic solenoid (around a 2" stroke).

It will be attatched to the shaft that is furthest away from the chip motor (see the 1st 2 imagesIi posted), and move those gears, and thus the speed that shaft is spinning at (it is our output shaft).

As for being beefy, well, yeah...lol...thats an understatement :P

It won't ever break, but we are paying for that with weight (altho granted it is spread out a lot).

I'll post more pics once it's all assembled (looking like that will probably be tonight, or tomorrow for sure).

Thx for the comments!
BBFIRSTCHICK
30-01-2003, 15:09
They came out sweet!!! Ours look the same! Just the compact version! We did a lot or re engineering to ours! What is your gear ratio and how fast will you be going??
Harrison
30-01-2003, 23:02
Depends on what gear we're in.

In low gear we go around 1.5fps, in high, its about 9fps (thats why the gears vary in size so much).

I can't recall the exact ratios right now (its been like a 15 hour day today....*falls asleep*).