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


Display results as :

Rechercher Advanced Search

Latest topics
» Lil Monster
by 944_Jim Today at 6:38 am

» 1978 Cox Hobbies Catalogs
by Bill steklenski Today at 6:38 am

» Anyone have a 3D printer?
by Madguns Today at 2:49 am

» I bet not many COX collectors have this..
by KingofCox Today at 12:26 am

» Chat box check-in
by Admin Yesterday at 10:12 pm

» My NOS plane collection
by KingofCox Yesterday at 7:36 pm

» Accelerator accessory for .09
by MauricioB Yesterday at 4:15 pm

» Stuka timeline
by ticomareado Yesterday at 4:06 pm

» O.S. FS 40 Marine
by 1/2A Nut Yesterday at 3:04 pm

» Organized my planes today
by KingofCox Yesterday at 12:56 pm

Cox Engine of The Month

"War Dog hauls the 2M B.O.T. out of Uncle Wayne's backyard"

Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop

World of Aviation

Picked up some backplates

Go down

Picked up some backplates

Post  batjac on Wed Aug 16, 2017 11:27 pm

I picked these up on eBay a couple of days ago.  I don't need any more backplates, but I wanted the fine thread needles and spraybars.  I figure $4.50 a piece shipped for the fine thread spraybars is a fair price, considering the equivalent spraybar and needle is going for $10.00 on the Texas Timers website.  I want to use one on my Pipe Bomb Special engine.  Maybe I can get a better needle and smoother run from the Testors engine if I press in a better assembly.  I also want to try pressing one into Matt's new TeeDee venturi to see if I can get a little more adjustment range on bladder pressure.  The other two will end up in my parts bin of bladder stuff for future projects.

The Hoarder Collector Mark
Diamond Member
Diamond Member

Posts : 1541
Join date : 2013-05-22
Age : 55
Location : Portland, OR, USA

View user profile

Back to top Go down

Re: Picked up some backplates

Post  roddie on Thu Aug 17, 2017 2:58 am

Hi Mark, Have you unscrewed any of the needles yet? I'm curious of their tapers between the four of them. I mixed mine up.. and their "stepped" tapers are different. Make sure that you keep the needles paired-up with the spray-bars that they came out of.

Here's a photo example of what I'm talking about..

This second photo shows yet another "short-style" needle (top one) having a "straight" taper.. but unfortunately I misplaced it..  Doh!  

I only have ever had the two backplates.. so I'm not sure where the third needle came from. Installing the wrong needle will be a problem..

I thought that maybe the differing-length fuel-line barbs might be an indication of which needle is the correct one.. except that your three "red" backplates look to have the same needle.. and the upper-left backplate has a long barb.. Huh...

Thanks in advance for any info you can provide.
Top Poster
Top Poster

Posts : 5892
Join date : 2013-07-17
Age : 58
Location : N. Smithfield, Rhode Island

View user profile

Back to top Go down

Back to top

- Similar topics

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