Subject: Six pinion question
From: ACRE
Date: 11/29/2003, 6:07 PM


 Ken &Paul,
 I would have to support that one hundred percent.
 The hard shoulder bolts are needed to maintain the free-play
of the
 planets
 in the planetary housing - straight through bolts would IMHO
distort
 the
 housing.
 George (down under)

   You would have to make them shoulder bolts for sure, I am
thinking
more on the line of making an inner race/bushing with a bolt
through
it so that you could tension against the housing and anchor it to
the
flange, also thinking of a steel ring for the bolts to go through
to
distribute the pressure evenly so as not to distort the housing.

  Ken

I don't think you would distort the six pinion cast iron version
Ken.

Paul Lamar


 Ken,
 Paul may well be right, but I like your proposal - the only
problem  I
have
 with that is the size of the bolt thickness is reduced.
 There is another problem (small one), I can't for the life of me
work out
 how to remove the rolled spring steel pins - their deadended and
placed at
 an angle. I can only assume to stop them coming out with
centrifugal
force.
 It's pinned only one end.

 There must be an easy way or a tool to do the job, the pin is very
small
 with a 1.5mm centre hole - if you could find something that could
go
through
 the pin and catch (hook) onto the back of it, I believe it would
pull out
 easily.

 Mate if you find a way will you let me know!!

 BTW did I tell you that the overdrive is 2.45 - but only 4
planets.
 George (down under)

   I figure that you should be able to get a 7/16 bolt in the and
there are six of them and the Ross only had four 7/16 bolts holding
the four planet, I don't think Ross ever made a six did he.
   I do like the idea of the plate as the area where the pins are is
unsupported unlike the area between the gears that have the web, just
like the idea of a 4130 plate as it gives piece of mind if nothing
else.
   I have a 3 planet that I have been messing with and I just pressed
the main pin out sheering the role pin, it did rip a corner out of
the aluminum housing but I think the steel housing would hold up to
it and even if it didn't the small rip wouldn't hurt anything
especially with a 4130 plate backing it up.
   You can see the rip in this photo.

   Ken


Hey guys instead of ripping out those roll pins try coating a steel
wire
with a diameter a little smaller than the inside diameter of the roll
pin
with epoxy. Stick it in the roll pin and let it set up. Then pull it
and
the roll pin out. If the roll pin is one inch long and the inner
diameter
of the roll pin is .050 the force generated by a 3000 psi epoxy bond
will be
480
pounds roughly. Bond area is .050 times 3.1416 times one inch long or
.16
square inches... times the 3000 psi  shear strength of epoxy or 480
pounds.

Clean the roll pin out with acetone before you try to bond to it.

Not my idea. I forgot who came up with it but it is a good one.

Paul Lamar

Hi Paul, I'm afraid that the epoxy will seep and epoxy the roll pin
also?
Bulent


Well that is a chance you take.

Paul Lamar


I haven't tried it, but I would think that a dent puller hammer could be
used with a long screw driven into that roll pin.

Ron Freier


 
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