Re: (ET) Jackrabbit starts.

["Mike Wallace" <metman glasgow-ky com>]

And possibly the same for the pulleys on the motor and/or the 
transmission. 

-----Original Message-----
From: Harold Zimmerman - Clean Power Supply [mailto:cleanpower mailbug 
com] 
Sent: Tuesday, August 13, 2019 3:37 PM
To: Robert Laird; elec-trak cosmos phy tufts edu
Subject: Re: (ET) Jackrabbit starts.

 Extremely worn keyway in 1 or both of your wheel hubs?
 
On August 13, 2019 at 1:37pm -0400, you wrote:

>I have an E15 that has been giving me quite a jolt when start up.
>Eventually, I noticed that it only did it when I switched directions.
>(fwd to rev and rev to fwd)   Further inspection revealed that it takes
>about 27 revolutions for the motor to take up all the slack in the
>transmission.   I also have a E20, and it's not like this, so I know that
>this is not normal.
>
>I'm guessing the transmission is toast, but just curious if anyone has 
>seen
>anything like this.   If I had to guess, I'd say that all the rollers have
>fallen out of one or more bearings in the transmission, and that a shaft 
>is
>moving back and forth, but still leaving the gears, more or less, engaged.
>(assuming the transmission even has roller bearings.)   Thoughts?
>
>Robbie
>
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