[AT] Now Ralph Video -- disc brakes

[Ralph Goff]

On 12/29/2012 10:19 AM, charlie hill wrote:
> Thanks Richard,
>
> As I said, I probably will never try it but if I do I'll have it
> all built out on paper and know what I'm getting into.
>
>
On the old self propelled swathers (windrowers), they had planetary 
drives, separate to each driving wheel. Controlled by separate steering 
levers much like a crawler tractor. Those levers steered by slowing down 
or reversing either side drive wheel and when everything worked they 
were ok. But most that I used had a weak band brake on the outside of 
the planetary that was either too loose to give enough braking power for 
reverse, or else they were too tight and dragging all the time making 
the planetary drum really hot. I tried to visualize a nice hydraulic 
caliper on a disk beside each planetary and how well that might work. I 
was sure glad when hydrostatic drive swathers came along shortly , 
eliminating all those mechanical planetary problems.

Ralph in Sask.
>