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[FlyRotary] Re: Dodge vs Ford
I forgot to
mention that I am planing on putting oiling for a CS prop in my
gearbox, I hope to have a gearbox flying by spring but doubt I will
have a CS prop and governor on it by then as I will leave that for
next winters work and I want to prove the gears to work first and then
tackle the rest.
Ken
George,
Mistral's PSRU is a custom made gearset.
Which can be done of course, it's just hard to justify the expense
unless you sell many of them! A very nice looking job BTW though
expensive. Some one needs to design a new lower cost (electric CS)
prop. Other wise the Mistral unit looks good for the 10 despite it's
high initial cost.
Bill Jepson
Ken,
Good info -
keep it coming!
Now just
find me an overdrive, straight cut gears (NEW) with a 2.5:1 ratio,
steel planet with gears running on needle bearings, with a RH
Turning prop.
That
shouldn't be too hard - I'm seriously looking to have one
made!
I wonder
where Mistral gets theirs from?
George (
down under)
Here is is an email
that was sent to me to forward to you all from a friend of mine that
talked me out of building a C-6 based 3.17 ratio gearbox and talked me
into using the 3.21 Dodge gears.
He is not on this list but
you may have heard of him as he is on the rotary roster as he is
building a Coot with a rotary and he is using one of my 2.95 belt
drives and he should be flying it this summer.
He thinks I am nuts going
away from the belt drive that I have put 900 trouble free hrs on and
says he will stick with the belt even though works on transmissions
for a living.
Ken
Welter
Date: Wed, 04 Jan 2006 06:47:42 -0800
(PST)
From: Arnold <vwsandndirt@yahoo.com>
Subject: Re: Fwd Re: [FlyRotary]Soapbox Warning! PSRU
Ratios
X-Originating-IP: [66.218.79.59]
To: Ken Welter <rotary.coot@verizon.net>
One thing I can tell you is that in the
last 15 plus years that I have dealt with planetaries, I still
see Ford sun gears coming apart in 80% of units I take apart and I
have yet to find a bad Dodge sun gear with the exception on total
planet meltdown due to a plugged trans cooler. I am not an
engineer, just an observer and a very qualified transmission
expert.
Another thing I can tell you is that it was not the amount
of pinion gears that were put into the Ford planets that made it
better, it was the change from aluminum to steel to keep the splines
from stripping out. Also, the Ford planets are only being used
(loaded) during up shifts and the Dodge planet set in question is
being used during the long period of time the truck is towing the
trailer down the highway in overdrive.
Good luck with your ratio debate and I hope this info is
of help.
Arnold Norton ASE certified
American Transmissions
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