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Todd,
I searched the forum and couldn’t find it.
I’m sure Van’s folks would pass along the info.
I’m waiting to hear back from Ed K
regarding modifying a 6 mount that Charlie England has offered.
Thanks,
Bryan
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Todd Bartrim
Sent: Wednesday, September 08,
2010 3:40 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
Dimensional help needed
Way back when I built my
9 I had a partial mount made by the same guy that builds Vans mounts. I wanted
what is refered to as a "float" mount, which has the gear leg socket
for both the front mains on a tail dragger and the nose gear on a trike. This
is to allow me to change my gear configuration from a tail to a nose dragger or
put it on floats. Van's had previously supplied a few of these to a few
customers, but were also happy to just give me the phone number of the guy that
builds the mounts for them. Once I talked to this guy I explained that I was
using it for a rotary and that I needed to design my own engine mount but
wanted the gear portion of it. He was happy to build me a partial mount that
consists of all gear legs and the firewall mount. He also supplied all the
tubing that I required to finish the mount. He built the mount and shipped it
to Van's along with another batch then they put that in my finish kit, so I
didn't even have to pay any extra for shipping. It wasn't powder coated and the
gear legs weren't reamed to the final dimensions. I was very pleased with the
whole thing and building the rest of the mount was another rewarding
experience.
I don't have the guy's name or contact info right now, but I'm
certain that it can be found in the archives as I know I've given this info
before. Search back at least 7 years and you should find it.
On Wed, Sep 8, 2010 at 5:45 AM, Bryan Winberry <bryanwinberry@bellsouth.net>
wrote:
Thanks Bob,
Yeah, Van’s told me that the 9 gear has a different sweep than the
6/7.
I need to contact Ed K about going this route. I’m guessing
he prefers to build from scratch, rather than modifying an existing mount.
Does anyone know of someone in the eastern US that could straighten
a bent leg?
Bryan
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On Behalf Of Bob Perkinson
Sent: Tuesday, September 07, 2010
11:19 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
Dimensional help needed
Ed K. didn't have
the dimensions on the RV-9 engine mount at the time, and like Charlie mentioned
when he contacted Van's they don't give out dimensions on the manufactured
components. I decided to get a mount and gear legs pre drilled from vans.
Ed took that mount and modified it. After all was said and done the
mount measured out the same as that used on the RV-7, but according to Harmon
Lang the gear legs are slightly longer than a 7. I am not sure what Ed
charges for a complete mount. But what I do know is that Ed only
used about 1/3rd of the Vans mount when he modified it. As for shipping
it cost me 4 hr. drive time round trip and gas to push my F-150 270 miles.
Harmon Lang has
instructions on how to drill the legs on his site
I am using
Bernie's old James cowl, and I will get back with you on the measurement to the
prop flange.
From: Bryan Winberry <bryanwinberry@bellsouth.net>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, September 4, 2010
4:42:05 PM
Subject: [FlyRotary] Re:
Dimensional help needed
Maybe I’m missing something, but don’t you have to drill the leg
positioned in the mount? If so, how can you use a drill
press?
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On Behalf Of Ed Anderson
Sent: Saturday, September 04, 2010
5:23 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
Dimensional help needed
Bryan, if you decided to drill your legs,
in addition to a drill press, the drill bit itself is important. I would
not attempt it unless I used a quality colbalt drill bit (not carbide
- too brittle). I would start off with a drill bit undersize but not
smaller than 1/8" perhaps 3/16" (too small and they may
wander). Then if you progressively enlarge the hold with a larger drill
bit, you are more likely to drill a straight hole. You will need to drill
at a slow rpm or risk burning the drill bit and hardening the metal even more.
If you do
not feel comfortable doing this, then the shipping charges to someone who knows
what they are doing is probably cheap in the long run.
I drilled my
own (successfully), but, only because I could not find anyone at the time to do
it for me{:>)
Sent: Saturday,
September 04, 2010 5:12 PM
Subject:
[FlyRotary] Re: Dimensional help needed
That’s what I wanted to do, but Ed K prefers to mount the clips
undrilled. This forces me to drill the legs. But, he is apparently
able to use Van’s mount. Did he charge more for this approach as opposed
to his preferred way? I guess shipping is more costly.
I guess I need to run it by him again. I haven’t bought any
mount, but I really don’t want to drill my legs.
BW
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On Behalf Of Bob Perkinson
Sent: Saturday, September 04, 2010
5:02 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re:
Dimensional help needed
The gear legs were
straight from Vans. After having been ripped off by Fred Breeze
(Conversion Concepts) I ordered an engine mount and matching gear legs from
Vans and had Ed Klepis convert it. I had bought a pair from Harman Lang several
years ago to be match drill to the CC mount, but after spending the money and
not getting the mount I sold them to someone in Texas can't now remember. The only
advice that I can relay is that of a machinist friend. Use a good sharp
centering punch and good luck if you don't have a good drill press to mount the
gear leg in.
RV-9 13B
From: Bryan Winberry <bryanwinberry@bellsouth.net>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, September 3, 2010
4:38:41 PM
Subject: [FlyRotary] Re:
Dimensional help needed
Bob,
Any tips on drilling your gear legs?
Thanks,
Bryan
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On Behalf Of Bob Perkinson
Sent: Friday, September 03, 2010
5:03 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Dimensional
help needed
as you can
see in the photo I used a laser light level to find the distance, but as you
probably know the line gets somewhat thick the father you get from the source.
SO you can add or subtract a 16 th. I got 4" 15/16. Ed
Klepis probably has that figure in his notebook. Let me know what other
numbers you come up with.
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