Paul, I meant to say BD4 to 13B mount plans available?
Ben Lane
Can you tig weld? No plans but I can send you tubing lengths for our
universal mount. Here is a universal mount on a Tango. The universal
mount eliminates the need for a welding jig.
Paul Lamar
Hey Ben Lane, I am working a BD-4 project and also seeking the BD-4
to 13B mount. I can TIG weld. Feel free to contact me directly
regarding the BD-4. I'm in Auburn Nebraska (that's 60 miles south of
Omaha).
John Lindinger N1404A 1951 Tripacer 125HP (Flying) [Unregistered]
BD-4 0HP (Project) 1993 Mazda RX-7 350HP Single Turbo Mod (Daily
Driver)
John, I don't publish the phone numbers and email adress to
discourage the bots but will forward the info in private email to
anyone that request it. Paul Lamar I will @ some point John. thanks
Ben Lane
Paul, What happened to the robo welder? Maybe he wasn't on list for
that. Might be easier to do them a batch job of bd4 mounts. C Smith I
still have it. That is an option to welding it yourself.
Ben, Craig is referring to a machine I built to weld fittings on the
end of 4130 motor mount one inch round tube members automatically. It
only works for the round tubes.
There are two one inch square tube ends in each mount that must be
welded by hand. My part time welder can do that for a small charge
but any person that tig weld can do that rather easily. Here are some
pictures.
Paul Lamar
Ben and John, Here's my BD-4 with Renisis engine mount. I had it made
by Jerry Hey, and unfortunately the air-frame side wasn't exactly
like the plans and the mount didn't line up. I had to cut off the
upper arms and make an elaborate jig to capture the holes and angles.
It took a few tries but I got it to fit. I'm still trying to decide
on a cooling system and exhaust arrangement, that can be upgraded to
a turbo in the future.
Kevin Bell Halifax, Canada
Sorry to hear that Kevin. Jerry did not always get it right. That was
one incentive for developing the universal mount that is adjustable
to fit.
The tunning is for rather low RPM based on the looks of the intake
runners.
Paul Lamar
IMHO Jim Bede was genus aircraft designer. He does however do
certain things differently. The motor mount hard points on the
firewall are an example that may have to be modified.
If you have not drilled the 3/8th holes yet we are home free. If you
have they may be too close to the wall of the tube to accommodate the
rod ends of the universal motor mount.
In any event an adapter can be welded up. By me or otherwise.
Paul Lamar
Greetings Paul,
I will receive my plans next Friday for the BD-4. You know i have
researched quite a few aircraft and built a Bearhawk LSA fuselage. I
traded that fuse for a 200hr SMOH Franklin 90HP (4ac-199). Upon
disassembly the crank journals are scored. Turning, .010 bearings,
lightspeed mag, rings gasket set, were priced and considered.
What a joke. The price for the Franklin overhaul will buy a (nearly)
Renesis crate short block. I am interested in the universal mount,
the massive aluminum plate for the front mount. The rod ends are a
very good idea. Will be following along, thanks for your answers.
Compared to the BD4 the Bearhawk is a relic.
Ben Lane
I have a set of BD4 plans so we can compare notes. I was thinking a
set of 4130 tabs bolted to the side walls of the rectangular
extrusion with four 1/4 inch bolts is about all that is required for
the rod end mounts. No welding required. AC Spruce sells 2 inch wide
.063 thick 4130 straps 6 feet long for $10. We can whack those off to
the right length (about 2 inches) with a friction blade. I'll do a 3D
shortly.
This is what we use now for traditional simple hole hard points in
the firewall.
Paul Lamar
Here is a suggestion for the BD4 hard points.
Paul Lamar --
Thanks Paul, the rod ends are super high quality, like everything
else you have your hand in. I will use the hard point suggestion.
Thanks for your help.
On to the Turbo Compound!
Ben Lane
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