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Cox Engine of The Month
August-2024
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Pee Wee Horseshoe back plate
Page 1 of 7
Page 1 of 7 • 1, 2, 3, 4, 5, 6, 7
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
How well will that hold up to engine heat?
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Pee Wee Horseshoe back plate
Once again, something words cannot describe. Amazing work with the computer and printer. If these bacome a reality, I would most definately be interested in one as I have a PeeWee without a tank/backplate/needle assy. I cannot wait to see how this turns out. Out of curiousity, would this use a needle from an old postage stamp backplate (.049), or something special?
NEW222- Top Poster
- Posts : 3895
Join date : 2011-08-13
Age : 45
Location : oakbank, mb
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
Derlin should hold up pretty good, will be a big plus to have a way to extend flight time
with the Pee Wizzer and perhaps improved air / fuel intake for more power.
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
with the Pee Wizzer and perhaps improved air / fuel intake for more power.
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
That looks good. I am assuming that all the lines I see on the backside are where the printer had layed out the material? It is neat to see how it works from a different angle. Is that an .049 needle assy?
NEW222- Top Poster
- Posts : 3895
Join date : 2011-08-13
Age : 45
Location : oakbank, mb
Re: Pee Wee Horseshoe back plate
Looks really good. You may want to open up that venturi hole if you are going with the .049 NVA.
Cribbs74- Moderator
Posts : 11906
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Pee Wee Horseshoe back plate
The design looks good. If the sealing surface for the read can be made to work it should run. Did you have one of protoypes for reference or did you design it?
gkamysz- Gold Member
- Posts : 397
Join date : 2018-02-22
Location : Chicagoland
Re: Pee Wee Horseshoe back plate
The .020 backplate/carb looks terrific Jason! You may want to consider plotting-out the 2nd or 3rd generation .049-style reed-retainers; neither of which utilize a "circlip".
The latest (3rd generation/"Sure-Start") style .049 horseshoe backplate uses a simple snap-on cap to retain the reed. This may be much easier to draw/print.. than creating that internal "groove" for a circlip.![Two Cents](/users/3015/29/34/60/smiles/3213304551.gif)
The latest (3rd generation/"Sure-Start") style .049 horseshoe backplate uses a simple snap-on cap to retain the reed. This may be much easier to draw/print.. than creating that internal "groove" for a circlip.
![Two Cents](/users/3015/29/34/60/smiles/3213304551.gif)
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: Pee Wee Horseshoe back plate
gkamysz wrote:The design looks good. If the sealing surface for the read can be made to work it should run. Did you have one of protoypes for reference or did you design it?
I didn’t have one of the Cox versions. I started from scratch and used an 049 horseshoe backplate to capture features. It uses the .049 horseshoe backplate screws and a postage stamp fine thread NVA. . I need to make some changes and print in PLA again to test fit and then I’ll load nylon. Also have Delrin I can print in.
For the reed surface I was thinking of using a polished aluminum rod end, heat it up and then slightly melt the top surface of the reed seal surface smooth. This should fix any imperfections from 3D printing.
I might need to open up the intake more. It’s at .160” where the NVA is then tapers to .110”. I’ll look at a helicopter backplate and replicate what’s done there.
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
Fingers crossed it works out well, and you have then available....
Is there a reason why you print in PLA then if good switch to a different material? Is it have anything to do with materials cost? Or does one material print better than the other? Just curious.
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
Is there a reason why you print in PLA then if good switch to a different material? Is it have anything to do with materials cost? Or does one material print better than the other? Just curious.
NEW222- Top Poster
- Posts : 3895
Join date : 2011-08-13
Age : 45
Location : oakbank, mb
Re: Pee Wee Horseshoe back plate
NEW222 wrote:Fingers crossed it works out well, and you have then available....![]()
Is there a reason why you print in PLA then if good switch to a different material? Is it have anything to do with materials cost? Or does one material print better than the other? Just curious.
Cost is one thing. Setup for nylon is another. I have to bake nylon overnight in my drier before printing. PLA is cheap and easy to print. Works great for testing the fit. Once it looks good then setup for nylon. I have to print Bob’s axle for the funny car yet out of nylon so I’ll do it all in one print along with some teather car wheels.
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
Jason i would not shorten it the hose is not that hard with a good pair small long needle nose pliers . The overall look is good , is this with the #25 nozzle on the printer and i don't guess you could slow down the printing to make the surfaces smoother , Dont know just guessing may be a melt down if too slow .. I read were you can get products that will Make the surfaces smooth after print but looked like a PIA to go through for say one surface .
getback- Top Poster
Posts : 10326
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Pee Wee Horseshoe back plate
I know what you mean about shortening the bottom. It messes with the look a bit.
I do have a .15mm nozzle but I have never used it. It would take some experimenting and I would need to make a filament precleaner to wipe any dust off the filament as that can jam it up. It doesn’t work with all filaments either. Some increadable detail can be had with this nozzle size and might help with the reed seal area and circlip groove.
https://e3d-online.com/blog/2016/11/07/0-15mm-nozzles/
I do have a .15mm nozzle but I have never used it. It would take some experimenting and I would need to make a filament precleaner to wipe any dust off the filament as that can jam it up. It doesn’t work with all filaments either. Some increadable detail can be had with this nozzle size and might help with the reed seal area and circlip groove.
https://e3d-online.com/blog/2016/11/07/0-15mm-nozzles/
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
Will this work to clean the filament .. https://weldingsupply.com/cgi-bin/einstein.pl?PNUM::1:UNDEF:X:007062
getback- Top Poster
Posts : 10326
Join date : 2013-01-18
Age : 67
Location : julian , NC
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Jason_WI- Top Poster
Posts : 3123
Join date : 2011-10-09
Age : 49
Location : Neenah, WI
Re: Pee Wee Horseshoe back plate
Ah nice is that more heat resistant?
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Page 1 of 7 • 1, 2, 3, 4, 5, 6, 7
![-](https://2img.net/i/empty.gif)
» Unknown back plate
» Cox PT-19 part
» cox pee wee .020 back plate or fuel tank with back plate
» Guilow edge g-540 rc
» Back Plate Difference
» Cox PT-19 part
» cox pee wee .020 back plate or fuel tank with back plate
» Guilow edge g-540 rc
» Back Plate Difference
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