Missing lugs on tank backplate

I was thinking of something along those lines...

yeah...I got a really messed up backplate...was gonna try that...not like there's anything to lose. I was gonna go with an oval shape with two holes like the Atwoods and Hornets...

If there is a remaining fragment of the lug a small flat washer could grip the remaining portion then attach the washer/lug with a screw or bolt.

Or just pretend the broken lug doesn't bother you.

SuperDave wrote:If there is a remaining fragment of the lug a small flat washer could grip the remaining portion then attach the washer/lug with a screw or bolt.

Or just pretend the broken kug doesn't bother you.

Yeah...that'd work as long as there IS a nub, and the others are in fairly good shape. I got a REALLY tortured backplate (not the one in the photo) that may get messed with. Looks like there IS space on either side, outside the webbing between the screw holes, where a small screw could fit...

It should be noted by our "newbs" that the pickup tube in Kim's photo is in the control line position.

Yo Travis...trying to join your forum...there's no verification code coming up...is it me or the site? Also, if you'll PM your name over there...I'll give you credit for directing me there !

SuperDave wrote:It should be noted by our "newbs" that the pickup tube in Kim's photo is in the control line position.

Good Point !!!

Kim wrote:

SuperDave wrote:It should be noted by our "newbs" that the pickup tube in Kim's photo is in the control line position.

Good Point !!!

Your right, never thought of it being that way.

Seems to me that an aluminum backplate affixed with the tank securing screws would work. The problem would be making it leak proof and drilling a venturi hole. I have some clapped out pee wee backplates that could benefit from this type of mod. Some are a bit warped so sealing the new mount to the backplate may be tricky.

cribbs74 wrote:Seems to me that an aluminum backplate affixed with the tank securing screws would work. The problem would be making it leak proof and drilling a venturi hole. I have some clapped out pee wee backplates that could benefit from this type of mod. Some are a bit warped so sealing the new mount to the backplate may be tricky.

Yeah, maybe a piece of tubing on the screws between the new plate and backplate...

Kim wrote:

I've never seen a backplate with internal webbing like that. It's not a Babe Bee is it?

Nope, it's an .020 all right...

Clamp it in a vice and screw the vice on the plane.
Mike1484

Mike's seen my handiwork....

Just kidding around about the vice . For all the trouble and cost in time and money of trying to rectify the broken lugs it would seem that a spare motor or two ( parts motors ) picked from a swap shop or fellow modelers would be a better solution. I don't remember the thread of the back plate screws but maybe threaded rod with nuts silver soldered on to the proper lenth and leaving extra threaded rod past the nut would give you something to hang the motor with. Or clean the back plate surface well and rough it up and glue on some 1/16" aluminum with a good structural epoxy and make new holes. Allow for the tank screws and venturi hole.I would look for the parts motor myself.

Mike1484

Mike1484 wrote:Just kidding around about the vice . For all the trouble and cost in time and money of trying to rectify the broken lugs it would seem that a spare motor or two ( parts motors ) picked from a swap shop or fellow modelers would be a better solution.
Mike1484

Ah...t'would be a better choice...where it not for my Calvin & Hobbs 'esk disdain for Linear Logic !

With I modeling vice attached I'd opine that there would be serious CG concerns.

SuperDave wrote:With I modeling vice attached I'd opine that there would be serious CG concerns.

True...AND the flight would definitely require at least 35% fuel !

Yeah, but think about how strong your arm would be after a season of hand launching it.

Travis,
Pm your address and it's yours.
Bob

Thanks Bob, I owe you one!

Decades ago on Taiwan Island young me managed to dig dirt with most 049 powered airships. Broken ears were common. Took a very long time for new $3.50 Cox stuff to row the boat to our door front. My dad made a Image of the 049 back plate on a block of wood and carved out the shape. He sanded the back of the plate, cleaned it very good with MEK, mixed up some JB weld, used bees wax for release in the carved wood block, added the JB weld to each corner in the mold, and set the broken backplate in to the mold. sand paper, Small files, drill out hole, and poof...new ears!

Or you could buy these for $5.00, sand/grind smooth and JB weld to back of broken backplate

[img][/img]

Ebay
http://www.ebay.com/itm/Cox-049-Space-Bug-Model-Airplane-Engine-Backplate-Cover-/380402640317?pt=LH_DefaultDomain_0&hash=item5891c3a5bd

Very resourceful and clever![b][i][u]