|
|
Keep us posted Neil. I'm not familiar with your journey but let us know what happens. ~~~tg~~~
From: Neil Unger <flyrotary@lancaironline.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tuesday, July 28, 2015 9:09 PM
Subject: [FlyRotary] Re: Alternative redrives
Gents, Have kept out so far, as the engineering works is really
doing me over as I asked for one redrive initially, which is a one off for
everything. That makes me nuisance value only. However once My prop
shaft is finally ground My first redrive is ready for testing. Nothing
that 2 years of frustration has helped. Due to the “royal” treatment I am
looking for alternatives for production to first get supply as required and keep
the cost believable. So according to my latest update, My
redrive will be finished at the end of this week as I have been identically
informed for the last month. I will advise when I actually have it in my
hot hand. 3.12 reduction. Neil.
Sent: Wednesday, July 29, 2015 10:54 AM
Subject: [FlyRotary] Re: Alternative redrives
Hi group!
Finally got moved and they
installed my internet today so now I can keep up with this forum. It's to hard
on my little Iphone.
I still think the only
choices we have is the Ballistic air boat drive, (and one other company) and if
Tracy would consult, I would build my own which would solve the 6 inch offset
with the Ballistic drive.
All we need is a drawing
or instructions and sign a release and have at it.
As I have stated before, I
would feel a lot more confident building my own with the talent and resources I
am around now than buying something from a start up company with no hours of
testing.
OK, thats my two cents for
tonight. Any ideas from anyone will be appreciated as we need to resolve this
problem.
thanks
~~~tg~~~
From:
Charlie England <flyrotary@lancaironline.net>
To: Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Tuesday, July 28, 2015 3:42
PM
Subject: [FlyRotary] Re:
Alternative redrives
I
might be mistaken, but I think that the Ross was also missing the input shaft
thrust bearing (overloads the E-shaft thrust bearing).
On 7/28/2015
11:22 AM, Ed Anderson wrote:
Hi Bill,
I flew around 200 hrs with the Ross Drive before finding that the sun
gear was galling. Apparently marginal lubrication in some of the Ross
units was a problem.
By that time, Tracy had his Re-drive on the market, so rather than mess
with the Ross (still have it), I purchased one of Tracy’s and never had a
problem. Well, one – I had the entire aluminum area nickel plated for
corriosion and appearance. They erroneously coated the inside of tunnel
for the shaft area of the nose part reducing the area for oil
flow. Went out one morning and noticed that it was hard to pull through,
I tried to start the engine and it rotated a few degrees and just
stopped. Fortunately, I desisted at that point and stopped. Got
out and found the prop frozen. Took it off and shipped to Tracy, he
milled a few 1/10000 off the inside of the shaft tunnel and I now have around
400 hours on it. Love it!
Ed
Sent: Tuesday, July 28, 2015 11:56 AM
Subject: [FlyRotary] Re: Alternative redrives
I stand
corrected. This drive would only have a couple of teeth in contact at
any one time. How many are in contact with the
RD1-C?
What was the problem
with the Ross if you know?
Bill
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Tuesday, July 28, 2015
10:37 AM
To: Rotary motors in
aircraft
Subject: [FlyRotary]
Re: Alternative redrives
No, Tracy
started off with a Ross Drive …
Jeff
|
From: |
|
|
Subject: |
RE: [FlyRotary] Re: Alternative
redrives |
|
Date: |
Tue, 28 Jul 2015 10:22:59
-0500 |
|
To: |
|
|
|
|
|
Jeff,
If I am not
mistaken, Tracy started off using a Marcotte drive on his RV-4.
That drive I think is what inspired him to develop his own drive.
It would take a pretty bad experience to inspire me to that
extent! :>)
Bill
|
From: Jeff
Whaley
Sent: Tuesday, July
28, 2015 10:17 AM
To: 'Mark
Steitle'
Subject: RE:
[FlyRotary] Re: Alternative redrives
I see the
aircraft was equipped with an Aluminum Propellor – which may have lead to the
prop shaft fracturing?
I can’t vouch
for the “ Marcotte Drive ” but Ross Parnham (referenced on this list for P51
style radiator install) uses the Marcotte Drive on his Subaru-powered RV6,
mated to a composite prop. The website shows a picture of re-drive and
bell housing mated to a 13B … http://glasairproject.com/Marcotte/index.html
Jeff
Search
YouTube under "LS1 Glasair 111 at Paducah , Ky " for a video of this a/c
idling. You can hear him saying the PSRU builder is "belly up".
Sent from my iPad
That was during
the Canard Fly-in at Rough River 2011
Sent: Monday, July 27,
2015 2:02 PM
Subject: [FlyRotary] Re:
Alternative redrives
That looks a lot
like the gearbox that failed, killing the pilot when the engine disengaged
from the prop and he dead-sticked it into a hotel building. It was
about a week after the alternative engine fly-in at Ed's place in Paduka ,
KY. As I recall, it was a Glasair III with a turbo-charged
LS1. I have video of a ground run around here somewhere. Real
sad story. Can anyone confirm whether or not it was the same make
psru? I never read the final accident
report.
I went back to
the exhibit buildings, and took some photos of the psru’s offered by www.autopsrus.com . I will forward these
later today as every thing gets transferred . They are spur gear drive, have
there own oil supply and pump, use pressure fed roller bearings, will
provide oil for a constant speed prop, and are available in many reduction
ratios. They make a unit that can be straight through, suitable for the
13-B, the casing is CNC machined. They use a flywheel for the torque
damping, and it has a centrifugal clutch that disengages the prop below ~900
engine rpm, so when starting there is no prop load. Will likely be heavier
than Tracy ’s
I have to reduce
the size of the pictures before I can send them.
Sent: Sunday, July 26,
2015 1:59 PM
Subject: [FlyRotary] Re:
Anyone or everyone in Oshkosh ?
That is very interesting! Could one be built specifically for my combination
of a high HP 20 B? I would have more peace of mind knowing how it was put
together by me along with your knowledge and experience. The thought of
someone just starting out making them does not sit well with me as they are
an unknown.
Let me know what you think and I will be in touch.
The design is
royalty free. Anyone who wants to build it is more than
welcome. I can help with info if you need
it.
This message, and the documents attached hereto, is
intended only for the addressee and may contain privileged or confidential
information. Any unauthorized disclosure is strictly prohibited. If you have
received this message in error, please notify us immediately so that we may
correct our internal records. Please then delete the original message. Thank
you.
No virus found in this message. Checked by AVG - www.avg.comVersion: 2015.0.6081 / Virus Database:
4392/10324 - Release Date:
07/28/15
-- Homepage: http://www.flyrotary.com/ Archive and
UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html |
|