B-Model conversion

[fastj22]

Everyone got the Sonex email about discounts for the B-model conversions, 10% off. Looking at the price, it might be something I want to do, under $10k. And I really like the look of the B. Has anyone converted a flying legacy model to it yet? Can you do most of the fabrication while still flying your Model A then come winter, do the swap? Lots of things I'd like to do better turtle deck forward. Sure like 20gals up front. I'd probably still do a tilt back canopy.

[thomas]

Hi John,

I believe Leroy Brandt's B-model was a conversion. Here's his thread:
viewtopic.php?f=58&t=4039&p=30901&hilit=leroy#p30901

I hope you're not too much in a hurry to convert as I would regret not getting to see your famous "speed cowl" at a fly-in some day!

Paul

[sonex1374]

Since the B Model conversion kit is pretty much new parts forward of the seatback, you probably could build most of it as a unit, then make the swap all at once. Plus, your plane is running really well, so it's about time to tear into something, right? (I know, I know, stop egging him on!)

Jeff

[fastj22]

Interested in what changes to the wing rigging. The Model A bolts go through the vertical supports. Since these move outboard? Is there some gusset or other flange to keep the same holes?

[n307tw]

Interested in what changes to the wing rigging. The Model A bolts go through the vertical supports. Since these move outboard? Is there some gusset or other flange to keep the same holes?

I’m building a b model and can send you some pictures if interested of the build and plans - nearly done with the fuselage. Let me know what you want and I’ll email them to you. All the best.
-Tim


Sent from my iPhone using Tapatalk

[Lbrandt]

Interested in what changes to the wing rigging. The Model A bolts go through the vertical supports. Since these move outboard? Is there some gusset or other flange to keep the same holes?

John
The skins of the wings are trimmed to match the shape of the new fuselage. Basically from nothing at the trailing edge to about 3” at the leading edge. New machined wing mount blocks are included and used to replace the 1” angle with solid aluminum blocks that we fabricated for the Legacy wing mounting. These have pilot holes for tre wing bolts and the installation went well. If I remember correctly there were new root ribs but not all new ribs. I formed new ones for the items that were not in the kit.
I’m very cramped in my fuselage because if the lowered seat. I felt much more comfortable in the Legacy model.
I did appreciate however the added firewall area for installing all the goodies for the UL engine.
For anyone building the B model (the windshield is attached to the aluminum skirt while laying flat on the bench), I sure wish I would have known that.
Now that our turf runway finally firmed up I should be able to start flying more this week. I only was able to get three short flights last winter.
Hope this helps a little.
Leroy


Sent from my iPhone using Tapatalk

[fastj22]

I’m very cramped in my fuselage because if the lowered seat. I felt much more comfortable in the Legacy model.
I did appreciate however the added firewall area for installing all the goodies for the UL engine.

Leroy,
Curious if the above statement is accurately typed. Do you find the B-model more cramped? I fly my waiex center most of the time and have the lowered seat. Flying left seat is a bit cramped.

[Lbrandt]

I’m very cramped in my fuselage because if the lowered seat. I felt much more comfortable in the Legacy model.
I did appreciate however the added firewall area for installing all the goodies for the UL engine.

Leroy,
Curious if the above statement is accurately typed. Do you find the B-model more cramped? I fly my waiex center most of the time and have the lowered seat. Flying left seat is a bit cramped.

I do feel that because of lowering the seat that I’m cramped. The center stick hits my leg where with the dual stick my knees could spread. I can’t use my rear leather seat cushion because it pushes me too far forward. Others may fit in the airplane differently than I do however.
I tried sitting in the middle but I’d didn’t care for it.



Sent from my iPhone using Tapatalk

[fastj22]

Preliminary clearance from the home ATC to pursue a B-Model conversion approach. Now I gotta go to OSH to sit in one before executing it.

[fastj22]

So I pulled the trigger and bought the conversion kit at the show. I won't be documenting the process on these inner tubes as you jackals will rip me apart, but I will periodically report in on something noteworthy. Once you sit in a B model, you will follow me, unless you have much more self control than I do. Nice winter project I hope.