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-   -   a couple printed ideas (https://vansairforce.net/community/showthread.php?t=147771)

Ted RV8 07-15-2019 06:38 PM

Yes the original Van?s fuel cap.
The tools I received were solid around the perimeter but the center fill material was not fused to the outer perimeter of the tool.
I?ll email you a picture if you like for you to post up and show what I?m talking about.

Steve Melton 07-15-2019 07:40 PM

Quote:

Originally Posted by Ted RV8 (Post 1359775)
Yes the original Van’s fuel cap.
The tools I received were solid around the perimeter but the center fill material was not fused to the outer perimeter of the tool.
I’ll email you a picture if you like for you to post up and show what I’m talking about.

yes, send it over and let's take a look

also, take a side view picture of your cap

Ted RV8 07-15-2019 07:43 PM

Send to the Amanda email or?

Steve Melton 07-15-2019 07:48 PM

Quote:

Originally Posted by Ted RV8 (Post 1359790)
Send to the Amanda email or?

better send to me because I don't think she will accept your email. I'll send you a PM with address.

Ted RV8 07-15-2019 07:58 PM

Quote:

Originally Posted by Steve Melton (Post 1359791)
better send to me because I don't think she will accept your email. I'll send you a PM with address.

Well that?s interesting!!

Sent you pictures. Post the one of the tool up on this thread.

Steve Melton 07-15-2019 09:12 PM

it is failed
 
this is the slim fuel cap opener. it is failed.

you can see the white over stress in the half moon and then tensile failure in the outer strands and then it peeled.




Steve Melton 07-16-2019 05:55 AM

2.5 years old
 
this same style (slim) fuel cap opener is 2.5 years old and has been used hundreds of times. still looks good but has pocket wear. I like it. it doesn't scratch the paint.

Ted, in bending, the outer part fibers carry the load. for the failed part, by the over stress fibers in the half moon, I calculate the lifting force on your cap lever to be greater than 6 lbs. that's asking a lot from a .15 inch width plastic hook used for prying. one approach is to relax the tension on the cap lever. this will also increase life of the cap lever roll pin. if the gas cap lever must so tight then I would recommend using a metal opener.

However, I will add another part to the list for the future, "the crowbar" fuel cap opener.


Steve Melton 07-16-2019 05:09 PM

improved
 
improved infill with updated software. we are getting better with help from others kicking us along.

old print style



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new print style



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new crowbar design for tight fuel cap levers. elliptical half moon shape for improved stress distribution. width = .25 inch with tapered end. includes tailored infill and printed in UV resistant ASA with higher strength.



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it's a beast with elegance



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this will increase the cap lever lifting load capability from 6 lbs for the slim opener to 22 lbs for the crowbar. a 360% increase.




FinnFlyer 07-17-2019 09:40 AM

Stick grip
 
Does anyone have a 3D CAD model of a stick grip they want to share?

Room for hat-switch, PPT, toggle switch, etc.

I'm planning on adapting an old PC 3D joystick, but would consider printing one.

Finn

xavierm 07-17-2019 11:39 AM

here's one
 
https://www.thingiverse.com/thing:776116


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