I thought Power sport was out of business. Last time I heard from Ray
he
said it was a good hobby and not a business. Are you still trying to
sell
PSRU's?
The torsional stuff is BS. We don't have any torsional problems. The
tooth
with the hole in it was simply over loaded. We have tens of thousands
of
accumulated hours behind Ford based planetarias over a period of
twenty years
and that is far far more than Power Sport can claim with your over
priced
over weight product.
As far as your 215 HP $30,000 Mazda 13B based rotary engine
is concerned an off the shelf brand spanking new 238 HP RX8 engine is
only
$5,800 plus $3000 for one of Tracy's PSRU's.
Furthermore Power Sport has never tested their PSRU with a turbo three
rotor.
With PR people like you Power Sport does not need any enemies.
The first thing a businessman learns if he wants to stay in
business is never bad mouth your competition. I told Ray this years
ago but apparently he did not get the message.
Paul Lamar
Paul,
Thank you for the posting.
I guess I'll bite a little, and engage you in conversation.
We have no idea where you get your information, but just as I
straightened you out before about the status of Powersport (note: one
word name) no, we are not out of business, and yes the PSRUs are still
for sale.
As to the torsional "BS" I guess we will all have to agree to disagree.
(Maybe you could speak with Hartzell concerning this matter) The proof
will be in the experience of those who are in the air - or not. BTW
there have been many failures of "planetarias" (sic), we have had none
- albeit with many fewer hour flying. There is more than one way to
skin a cat, we like ours.
With very little research you would find that a fully installed
Powersport unit is actually no heavier than the other systems you
advocate.
Since a Ford planetary gear set weighs 8 pounds I doubt seriously if your
PSRU with monster internal spur gears really approaches the light weight of
a Ross gear box. Furthermore gear line contact length is the critical
strength parameter. In order for your single internal spur gear set to
be as strong as a six pinion planetary it would have to be six inches
wide. Obviously it is not six inches wide and I would be surprised
if it is was as much as half as wide or 3 inches wide.
I have no idea where you got the $30,000 price tag? If it is your
objective to "bad mouth the competition" you are doing a fine job.
What competition? I am not in the PSRU business but I know BS when I see it.
If
on the other hand your objective is to pass on good information then
get your facts straight! (The published price of $27,500 (not the $30K
you speak) is for a complete FWF see -
So you are going to make a liar out of me for only $2500?????
http://www.powersportaviation.com/Home/Pricing/pricing.htm) I am a
supporter of those who want to completely engineer their own system and
save as much money as they can.
Finally, you are simply wrong in your assertion that we have not tested
our PSRU with a 3 rotor. We have very extensively tested the
combination. This is how we know that a dampener is needed.
I said a TURBO 3 rotor. NOT just a 3 rotor!!! 10 hours on the dyno does not
count. Hundreds of hours are required to prove a gear box as tooth
fatigue is the failure mode. Tom's planetary gear box had about 100 hours
with his TURBO 3 rotor. A tooth with a hole in it failed. Lets drill a
hole in one of the teeth of your pinion gear and see if it makes it in a
TURBO 3 rotor for 100 hours.
You also claim a high torsional resonant frequency for your
gear box but that is with new unworn teeth. What happens when the gears
wear and some slop or back lash develops after a few hundred hours?
There are several fine products out there, Tracy Crook and Dave Atkins
among them (both of whom we have good relations with). On the other
hand if you want a complete FWF system we believe we have a good
product that is at an attractive price.
Respectfully,
Tedd James
Since you have such good relations with Dave Atkins how come he has
not installed one of your gear boxes? He is still flying a Ross planetary
gear box the last time I looked.
The proof is who flies half way across the country year after year to
attend OSH and other air shows when Power Sport has never flown further
than Minnesota to Wisconsin and back.
Dave Atkins has flown his Ross planetary gear box equipped RV6 from Washington state to
Florida and back. Tracy Crook has flown his own planetary gear box to Arizona from
Florida and back. He also flies year after year to OSH from Florida and back.
Chuck Dunlap flies his planetary gear box from Arizona to Florida and Arizona
to OSH and back year after year. I could go on and on.
If you want to make a believer out of us start flying to air shows in Florida,
Arizona and Washington from Minnesota. The new Power Sport has never flown
their airplane to Sun & Fun, never to Copper State and never to Arlington.
Those are the three major air shows in the country. Why? Don't you think
the Power Sport gear box will make it?
Half a dozen gyrocoptors have been flying for ten or fifteen years with Ross
planetary gear boxes.
Paul Lamar
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