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Black Widow backplate question
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Black Widow backplate question
OK, all you Black Widow experts out there! other than having no tank vents, what is the difference between a BW backplate and a Babe Bee?
In my quest for a cheap replacement I am contemplating filing off the vents on a BB backplate and filling the holes as a short term fix so I can at least continue to fly the engine, do I need to do anything else?, is the air inlet any larger on a BW, and are there any other differences?
Any advice appreciated
Wilf
In my quest for a cheap replacement I am contemplating filing off the vents on a BB backplate and filling the holes as a short term fix so I can at least continue to fly the engine, do I need to do anything else?, is the air inlet any larger on a BW, and are there any other differences?
Any advice appreciated
Wilf
Ivanhoe- Diamond Member
- Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland
Re: Black Widow backplate question
The inlet hole needs to be enlarged and the vents plugged, and that'll do it. Work fine last long time.
The inlet should be the same size as the venturi tube, .082". That's a little bigger than a 5/64" bit (.078), so just finger twist the bit through and ream it slightly so it is a loose fit. A bit crude, but it works for me anyway.
The inlet should be the same size as the venturi tube, .082". That's a little bigger than a 5/64" bit (.078), so just finger twist the bit through and ream it slightly so it is a loose fit. A bit crude, but it works for me anyway.
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while you're doing it!
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RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Black Widow backplate question
RknRusty wrote:The inlet hole needs to be enlarged and the vents plugged, and that'll do it. Work fine last long time.
The inlet should be the same size as the venturi tube, .082". That's a little bigger than a 5/64" bit (.078), so just finger twist the bit through and ream it slightly so it is a loose fit. A bit crude, but it works for me anyway.
Thanks, Rusty, that's what I needed to know
Ivanhoe- Diamond Member
- Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland
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