Log in
Search
Latest topics
» Ring Rat 100by YakNine Today at 8:58 am
» Pee Wee Horseshoe back plate
by Mike1484 Today at 7:55 am
» The Aurora L-19 Bird Dog, more than just an airplane
by getback Today at 7:42 am
» Engines/parts for sale
by robot797 Today at 5:03 am
» Cox aluminum piston?
by 1/2A Nut Today at 1:04 am
» Another proposed design by Roddie
by roddie Yesterday at 11:07 pm
» The Cars are the Stars Contest.
by Cribbs74 Yesterday at 10:32 pm
» Comet Belond
by ticomareado Yesterday at 7:54 pm
» Anyone recognize this model airplane?
by ticomareado Yesterday at 7:39 pm
» Boasting or sharing.......
by Dave P. Yesterday at 9:34 am
Cox Engine of The Month
February-2019
balogh's

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

PAST WINNERS
balogh's

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

PAST WINNERS
Picked up some backplates
Page 1 of 1 • Share •
Picked up some backplates
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.

TheHoarder Collector Mark

The
batjac- Diamond Member
- Posts : 1636
Join date : 2013-05-22
Age : 55
Location : Portland, OR, USA
Re: Picked up some backplates
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..

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


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..

Thanks in advance for any info you can provide.
roddie- Top Poster
- Posts : 6271
Join date : 2013-07-17
Age : 59
Location : N. Smithfield, Rhode Island
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum