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"Black Lynx .049 with a Throttle, Exhaust Deflector and Nelson-Galbreath head set"



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fuel tank BACKPLATES FOR BEES

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Wanted fuel tank BACKPLATES FOR BEES

Post  getback on Mon 27 Apr 2015, 10:25

Hello All , I am looking for some back plates without filler tubes as in black widow or golden Bee , Thank you ahead ! Eric Babe Bee .049
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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  Cribbs74 on Mon 27 Apr 2015, 11:20

Good luck prying those things out of peoples hands.

They are a more sought after part. What moat do is just buy a couple junk engines and scavenge parts.

You may get lucky though.

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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  KariFS on Mon 27 Apr 2015, 13:02

Could you just solder up the vents of a regular backplate? Or are there other differences between the two versions? I don't know how the backplate metal responds to soldering but I'll bet a nickel that someone around here has tried it before. This might work on "daily runners", but obviously not on collectibles.

Bernie has plastic non-vented backplates for sale, I think they are modified from regular vented ones.
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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  batjac on Mon 27 Apr 2015, 13:12

What I normally do is just use a short piece of small fuel tubing and put it across the two vents. Not pretty, but it gets the job done.

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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  pkrankow on Mon 27 Apr 2015, 15:18

Solder don't work, base metal is Zamak, a zinc alloy.  

JBweld is a mixed bag, it might work, but 25% nitro is enough to soften it.

Driving #0 (I might be wrong about the size) screws in has been done before successfully.  Injecting RTV sometimes works well.  Batjac probably has the best solution with the tubing.

Coxengines.ca and exmodelengines.com have the plastic ones which function very well.  The only metal ones I am willing to give up are pretty well trashed already.

Phil
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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  getback on Mon 27 Apr 2015, 18:50

Ok Sorry I didn't say that I was building engines to sell and am short on a few builds that I got that were not complete or a needle broken off in it . I have seen them soldier before but don't recall what they were using ///// Thanks Guys I'll just hold on too looking I did not know that they were that hard to get a hold of Shocked
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Wanted Re: fuel tank BACKPLATES FOR BEES

Post  roddie on Mon 27 Apr 2015, 21:13

Make sure you match the air intake size with the venturi-tubes' hole, if you're able to find them. I believe the Black Widow has a .082" air-intake hole. I have two Golden Bee's.. and one has the .082" hole.. and the other has the smaller .062" hole.. like the Baby Bee. This wouldn't be an issue if your tanks have the smaller hole on the venturi-tube.. but if they're the larger size.. and you put a backplate on that has the smaller hole.. the engine won't have as much power. Depending on the cylinder-porting it could have breathing problems too. Two Cents
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