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Cox Engine of The Month
3D printed R/C Pee Wee backplate
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3D printed R/C Pee Wee backplate
Seems like there is a huge infatuation with R/C Pee Wee engines and the like lately.
Here's my attempt to create an R/C Pee Wee engine with a modified version of the 3D printed backplate. I stretched the body of the backplate by .25" to make room for a throttle body. It will use C clips to secure it in place and o-rings to seal and prevent leaks. It should be able to kill the engine when fully closed. I have parts on order from McMaster Carr and will print a few to try out. I need to order a support filament that can handle nylon and will use my dual extruder printer to print these. The throttle body gets pretty thin at the o-ring area. Hopefully the carbon fiber Zytel is strong enough for this. No guarantees. It might end up in moth balls like the 3D printed all bearing crankcase TD.....
Here's my attempt to create an R/C Pee Wee engine with a modified version of the 3D printed backplate. I stretched the body of the backplate by .25" to make room for a throttle body. It will use C clips to secure it in place and o-rings to seal and prevent leaks. It should be able to kill the engine when fully closed. I have parts on order from McMaster Carr and will print a few to try out. I need to order a support filament that can handle nylon and will use my dual extruder printer to print these. The throttle body gets pretty thin at the o-ring area. Hopefully the carbon fiber Zytel is strong enough for this. No guarantees. It might end up in moth balls like the 3D printed all bearing crankcase TD.....
Jason_WI- Top Poster
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Posts : 3123
Join date : 2011-10-09
Age : 48
Location : Neenah, WI
Re: 3D printed R/C Pee Wee backplate
if it is for a cox 049 i could try to print it on my sla printer
robot797- Platinum Member
- Posts : 749
Join date : 2013-07-28
Age : 33
Cribbs74- Moderator
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Posts : 11895
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: 3D printed R/C Pee Wee backplate
Looks amazing. The detail into the design is nothing short of amazing. Wish you luck on the printing and that it works out good for you.
NEW222- Top Poster
- Posts : 3892
Join date : 2011-08-13
Age : 45
Location : oakbank, mb
Re: 3D printed R/C Pee Wee backplate
Jason y like the new desing it was Good To place bafle in befor the neadle valve just for informations the prototype tee dee wit bearing 3d print wy Not use the model for casting one made of aluminium wit sand mold ??? Y want To try To build one made of aluminium is it posible like the cox sing on parts u made very Good looking engine
davidll1984- Diamond Member
- Posts : 2287
Join date : 2020-02-12
Age : 39
Location : shawinigan
sosam117- Diamond Member
- Posts : 1285
Join date : 2016-03-23
Location : Suburb of Chicago, Illinois
Re: 3D printed R/C Pee Wee backplate
AHHHH! !
I look at those 3d CAD renderings of the Backplate and throttle barrel and get shivers up my spine thinking how long and difficult it would have been to produce those types of drawings back in High School Drafting #1 & #3 pencil on Velum paper, Hey Roddy, Can I borrow your French Curve? anybody got a protractor?
AAHHH ! again I'll need an eraser too.
I still get complemented on my hand writing when I take the time to print like was taught way back then.
I'm jealous of you guys who brought yourselves up into the 21st Century learning CAD and 3D Printing ! !
Hey Jason, If you go into production......I would order a couple just for fun! !
I look at those 3d CAD renderings of the Backplate and throttle barrel and get shivers up my spine thinking how long and difficult it would have been to produce those types of drawings back in High School Drafting #1 & #3 pencil on Velum paper, Hey Roddy, Can I borrow your French Curve? anybody got a protractor?
AAHHH ! again I'll need an eraser too.
I still get complemented on my hand writing when I take the time to print like was taught way back then.
I'm jealous of you guys who brought yourselves up into the 21st Century learning CAD and 3D Printing ! !
Hey Jason, If you go into production......I would order a couple just for fun! !
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: 3D printed R/C Pee Wee backplate
How you supposed to mount the engine ? .... Big hole in firewall with no strength left?...or long spacers that will surely vibrate loose?
OhBee- Platinum Member
- Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota
Re: 3D printed R/C Pee Wee backplate
OhBee wrote:How you supposed to mount the engine ? .... Big hole in firewall with no strength left?...or long spacers that will surely vibrate loose?
From what I can see, they should mount normally, just the same as any horseshoe backplate. It should just mount flush. Air can draw in around the needle valve and fuel line like any similar backplate.
Oldenginerod- Top Poster
- Posts : 3970
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria
Re: 3D printed R/C Pee Wee backplate
I think he means jasons versionOldenginerod wrote:OhBee wrote:How you supposed to mount the engine ? .... Big hole in firewall with no strength left?...or long spacers that will surely vibrate loose?
From what I can see, they should mount normally, just the same as any horseshoe backplate. It should just mount flush. Air can draw in around the needle valve and fuel line like any similar backplate.
robot797- Platinum Member
- Posts : 749
Join date : 2013-07-28
Age : 33
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