Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Laying off building planes for a while.
by batjac Today at 2:35 am

» WTB driven gear(s)
by Jason_WI Yesterday at 11:28 pm

» Hey BOB, there's a market for your Enya's
by GallopingGhostler Yesterday at 10:44 pm

» Cox P-40 Parts
by crankbndr Yesterday at 7:05 pm

» 5 Sure Start Engine Radial
by getback Yesterday at 10:04 am

» Cox .01 /.02 /.05 Engines & Mods / Nano Speed Planes
by 1/2A Nut Fri Oct 19, 2018 9:32 pm

» High Performance Cox tools by Bob Oge
by roddie Fri Oct 19, 2018 9:08 pm

» Recent engine acquisitions
by KariFS Fri Oct 19, 2018 4:37 pm

» Shuriken cylinder with piston for sale
by ukanduit Fri Oct 19, 2018 3:07 pm

» Sterling 36-inch RTF CL P-51 Mustang w/Cox .15 Sportsman
by Ken Cook Fri Oct 19, 2018 2:42 pm

Cox Engine of The Month
October-2018
Mudhen's

"Prototype T.D. .010 c.1960"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


World of Aviation

Black Widow backplate question

Go down

Black Widow backplate question

Post  Ivanhoe on Fri May 25, 2012 3:06 pm

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
avatar
Ivanhoe
Diamond Member
Diamond Member

Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland

View user profile

Back to top Go down

Re: Black Widow backplate question

Post  RknRusty on Fri May 25, 2012 6:21 pm

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.

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
avatar
RknRusty
Moderator

Posts : 10630
Join date : 2011-08-10
Age : 62
Location : South Carolina, USA

View user profile

Back to top Go down

Re: Black Widow backplate question

Post  Ivanhoe on Fri May 25, 2012 6:48 pm

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
avatar
Ivanhoe
Diamond Member
Diamond Member

Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland

View user profile

Back to top Go down

Re: Black Widow backplate question

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum