Subject: Mount (BD4)
From: rotaryeng
Date: 6/21/2013, 5:26 PM
To: AAA-rotaryeng


 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
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