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  #1  
Old 03-26-2020, 02:05 PM
AX-O's Avatar
AX-O AX-O is offline
 
Join Date: Jun 2005
Location: SoCal
Posts: 2,513
Default Looking for a machine or CNC shop

All,
I designed an air filter adapter for the carbon fiber part I have been working on http://www.vansairforce.com/communit...ght=air+filter



I was going to make the adapter out of carbon fiber also but the fiber does not want to lay nicely. Does anyone have a machine or CNC shop? Ideally I would send the file in and a part would show up at my house, as long as it is not crazy expensive.

I found a few places online that supposedly machine your part as desire but have never used these types of services. has anyone on VAF ever done that?

I have a few different designs based on complexity, material and potential associated cost.

thanks,
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RV-4 fastback thread and Pics
VAF 2020 paid VAF 704
The information that I post is just that; information and my own personal experiences. You need to weight out the pros and cons and make up your own mind/decisions. The pictures posted may not show the final stage or configuration. Build at your own risk.

Last edited by AX-O : 03-26-2020 at 05:01 PM.
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  #2  
Old 03-26-2020, 02:11 PM
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rocketbob rocketbob is offline
 
Join Date: Jun 2006
Location: 8I3
Posts: 3,673
Default

I've got a very similar air inlet on my Rocket. You have to make it with tapered overlapping strips about 2" wide at the bottom. You can sort of see it thru the filler in the pic below.

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Last edited by rocketbob : 03-26-2020 at 07:24 PM.
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  #3  
Old 03-26-2020, 02:34 PM
krwalsh krwalsh is offline
 
Join Date: Nov 2009
Location: San Francisco, CA
Posts: 375
Default Cut it in half

Axel-

You?ll have more success if you make this in two halves. Build a joggle into the mold so you can cleco it together and then put a 2? tape over the seam. I did a similar mold for an interesting wheel pant shape:

https://photos.app.goo.gl/RokgHJLPfFk6qHR98

The advantage is you can vacuum bag the half part. If you?re creative with the mold you can make it so the parts are symmetric and get away with a single mold.
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  #4  
Old 03-26-2020, 02:47 PM
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hgerhardt hgerhardt is offline
 
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Location: torrance, ca
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I've had good success with 3dHubs. Much of their machining capability comes via China, but quality is great and price is good too. Gotten several AC prototype parts from them. It's almost funny--you shoot a STEP file to the Netherlands and two weeks later you get a box from China with your parts.

As for your composite layup problem, use twill-weave cloth.
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  #5  
Old 03-26-2020, 02:52 PM
R_Heap R_Heap is offline
 
Join Date: Sep 2019
Location: Silverton, OR
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Try Andrew at Spingarage, LLC. He's up at L94 in Tehachapi.

https://www.spingarage.com/custom-solutions

He's a good dude and sorta local for you. He might not have the bandwidth to do it, but he has machining capability and this is right up his alley.
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  #6  
Old 03-26-2020, 03:00 PM
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AX-O AX-O is offline
 
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Location: SoCal
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Thanks for the info guys.

I was trying to make this out of one piece. Already made one out of 2 pieces with fractions of cloth. not happy with it. in the quest for learning, I also wanted to try the machine or cnc route.

Who knows, this may turn into a product for other folks.

Thank you again.
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RV-4 fastback thread and Pics
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The information that I post is just that; information and my own personal experiences. You need to weight out the pros and cons and make up your own mind/decisions. The pictures posted may not show the final stage or configuration. Build at your own risk.
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  #7  
Old 03-26-2020, 05:02 PM
jimpappas jimpappas is offline
 
Join Date: Jan 2005
Location: Park Ridge, IL
Posts: 369
Default CNC shop for new inlet

AX-O

Have you given any thought to someone with a 3D printer that could make it?

At Boeing we made some parts that way.
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  #8  
Old 03-26-2020, 06:23 PM
TFeeney TFeeney is offline
 
Join Date: Mar 2014
Location: Floyds Knobs, IN
Posts: 174
Default CNC access

Axel,
I may be able to help you.
PM with contact info on the way.

Tim
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  #9  
Old 03-26-2020, 06:58 PM
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vfrazier vfrazier is offline
 
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Location: Mount Vernon, IN
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We make the Wining's airbox for the F1 guys. There's another piece that isn't shown, a tapered tube that connects the filter to the Scat hose that goes to the adapter that mounts on the servo.



RVs wouldn't use the external scoop.

Blake sells the adapter here:

https://www.flyboyaccessories.com/Fu...ter-p/2103.htm



I couldn't see Rocketbob's photo for some reason, but he helped Jim with his original scoop and molds.
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  #10  
Old 03-26-2020, 07:27 PM
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rleffler rleffler is offline
 
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Default

Quote:
Originally Posted by AX-O View Post
All,
I designed an air filter adapter for the carbon fiber part I have been working on http://www.vansairforce.com/communit...ght=air+filter



I was going to make the adapter out of carbon fiber also but the fiber does not want to lay nicely. Does anyone have a machine or CNC shop? Ideally I would send the file in and a part would show up at my house, as long as it is not crazy expensive.

I found a few places online that supposedly machine your part as desire but have never used these types of services. has anyone on VAF ever done that?

I have a few different designs based on complexity, material and potential associated cost.

thanks,
Talk with Geoff at aerosportproducts.com. Geoff?s main business is Aerosportmodeling.com.
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