[AT] de-greasing disc brakes; throttle speed

[Herb Metz]

Throttle speed; that subject reminded me that Dad would occasionally ride my 
1948 Triumph T-100 motorcycle.  He did real good except when going slow he 
wanted to just run in a high gear at or near an idle speed. On dirt roads 
with a layer of sandy soil on top, there is always an engine load because 
the layer is soft sand gives way (so the front tire is always trying to 
climb this resulting small rise in the road).  Even a small load under idle 
conditions on this bike results in a knocking (hammer) noise; probably not 
bad but definitely concerning, and unnecessary.  Then he would remember my 
encouraging him to run at couple thousand RPM and in a lower gear, which 
solved the problem.
Redline then was 6,500 RPM; today they are way above that.  Herb(GA)
















-----Original Message----- 
From: jtchall at nc.rr.com
Sent: Sunday, September 27, 2015 7:54 AM
To: Antique tractor email discussion group
Subject: Re: [AT] de-greasing disc brakes

Interesting that you had good luck with the Farmalls with disc brakes, those
are the ones dad fusses about the most! Guess he heard too many complaints
about them while standing on the other side of the parts counter. I will say
this, thank heavens for internal disc brakes--not only do they work good,
they last a mighty long time. I'm glad I grew up on that style tractor!

Regarding the full throttle situation, all the tractors and combines here
were run full throttle with a couple exceptions. We never ran the baler at
full throttle, one particular bushog was only ran about 2/3 throttle (we had
more tractor hooked to it than its gearboxes could stand--it was bad design
on the bushog manufacturer), and cultivating tobacco when it was small--that
was sometimes not much more than a fast idle. If we backed out of the
throttle during tillage it was because the land was too rough or the corner
of the field was too tight. On the flip side however, my dad has NEVER ran a
lawnmower at full throttle. I have to encourage him even today to speed the
engine up a bit.

John Hall

-----Original Message----- 
From: Indiana Robinson
Sent: Saturday, September 26, 2015 9:21 PM
To: Antique tractor email discussion group
Subject: Re: [AT] de-greasing disc brakes

I have always liked disk brakes. I guess the first tractor here with them
was the MF-65-D-HA bought new. Next was the MF-165-D-HA that the 65 was
traded on. It's still here. Many years ago we bought a very nice New Idea
mounted picker (we had always used pull type pickers) and the friend that
had owned it had used it on a Farmall M. We went looking for a good Super M
to mount it on since we wanted the Farmall Super M improvements. More HP,
thicker radiator, bigger clutch, live hydraulics and disk brakes. Worked
well. Later I found my Farmall Super MTA to use with that picker for the TA
and independent PTO. It also has disk brakes. A bit later we picked up the
Farmall 400 (just because)  :-)  and it has disk brakes. I think the only
other tractor here with disk brakes is my Minneapolis Moline R. Its disk
brakes also work very well too.
We did have a bit of a disk brake problem with the Farmalls. We bought new
disks from Tractor Supply Stores that were only a small part of the price
of the ones from IHC. They looked very good but just wouldn't grip well
enough. We solved that by buying a full set from IHC and using one IHC disk
and one TSC disk together on both the Super M and the Super MTA. They have
always worked fine since.
In regards to throttle settings... here we have always used full throttle
for about any soil preparation job like plowing, disking etc. PTO jobs just
depended on the job. Cultivating (when we still did it) was usually fairly
low RPM unless the crop was pretty tall. I always felt that the engines
were engineered to run at maximum governed speed when pulling the maximum
load. I was always a bit surprised when guys talked about never running
full throttle. (shrug)  A lot of clutches use weights to apply more
pressure to the disk at higher RPM's and if you run at maximum load at
lower RPM's I would expect more possibility of some slippage.



-- 

Francis Robinson
aka "farmer"
Central Indiana USA
robinson46176 at gmail.com
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