Re: tranny

[Will Montgomery <wsmontg5-at-netscape.net>]

Title:

It all comes down the track system you are using. If you are using the TTS there is no need to have slippage in your tranny. If you are using attachment chain there is. I stripped a wheelchair motor gears when there was no Vbelt in the system.

I used #40 chain with 3/4" shafts because that's what I found surplus.

Will

adt22-at-drexel.edu wrote:

I just finished a transmission for a set of EV Warriors, (disclaimer about taking my advice: everything spins, but it otherwise untested).

It sounds like you already have motors, if you don't I would recommend getting wheel chair motors.  All in all its probably cheaper and faster development time.  Anyone have experience with this?

So if you still want a dual stage 9:1 reduction I would recommend 5/8" shaft size.  While, I'm sure that is overkill in terms of strength, that seems to be the most popular size to find bearings, sprockets and pulley's in.  In my shopping experience I've found pulleys to be cheaper than sprockets and unfortunately chain to be cheaper than adjustable v-belts, so there is a trade-off.

I don't beleive in this whole slippage thing, (its built into my system just in case :) , but) I would like to hear from someone that has benefited from this.  Wouldn't an appropriate sized fuse save the motors also.  Fuse vs. slippage depends on how often     the tracks lock up though . . .

Good luck

----- Original Message -----
From: chris barthelson <barthelson88-at-hotmail.com>
Date: Monday, September 6, 2004 7:22 am
Subject: tranny

  

hello everyone
Just a couple of questions. What size shaft should I use for my 
transmission? And I want a duel stage 9:1 reduction what is the 
cheapest way 
to achive this??? And I'm using tts tracks so I dont need any 
slipage 
right??
Thanks,
Chris. B

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