VAF Forums

VAF Forums (https://vansairforce.net/community/index.php)
-   RV General Discussion/News (https://vansairforce.net/community/forumdisplay.php?f=2)
-   -   a couple printed ideas (https://vansairforce.net/community/showthread.php?t=147771)

Steve Melton 10-26-2019 07:19 PM

Prop pitch angle tool
 
Prop pitch angle tool


Vlad 11-02-2019 05:55 PM

Fairlead pair installed on a project in Arizona.



Another set is flying in New Jersey 15 hours +



A lot of those needed :D


Steve Melton 11-11-2019 09:55 AM

Vlad, I noticed you use a bigger head screw. That's the right approach for these. I followed your lead.




Steve Melton 11-11-2019 09:57 AM

LightSpeed Zulu3
 
LightSpeed Zulu3 headset controller mount in progress.







**

one of the best complex corners I have made.


Steve Melton 11-12-2019 03:27 AM

LightSpeed Zulu3
 
This headset goes back to the owner tomorrow. A record two day turnaround. It is a very good fit. Approved for aerobatics but easy to remove. I like it and I know the owner will too.

Note for printed parts: when you see some stitching marks on a flat surface at the perimeter edges you know the previous layer is overlapped at the edge with the current layer by some amount. this stitches the edges together to form a superior bond. the stitching marks typically fade away from the edges. I always look for this on on the flat surfaces of printed parts.










Steve Melton 11-13-2019 06:23 PM

Fuel Sump Tester Mount
 
Kicking around a concept for simple fuel sump tester mount. I think I would test more frequently if the tester was easier to access.

A beginning concept.



**

taking a look at bending stress in the retainer. plan to mathematically determine the optimum beam taper for uniform bending stress as a fun endeavor. MATLAB will be used to help with this.



**
**

this is looking good from a stress perspective. the key is to allow the bottom plate to flex and do some bending. spread the load with a big asymmetrical fillet that essentially creates an elliptical shape. I also blended the lateral restraint pocket to act as a guide.



**
**

I like it. I'll install it for testing. Weight is only 30 grams. ASA plastic, UV resistant. secure but easy to remove. anti-rotation feature. attach with velcro. it should have a long life. plate is recessed to fit cap end but will accept testers with no cap end. mount it vertically and it would serve to be a good location for gasohol testers that require a 10 minute wait time.







**
**

installed. I like it. the only thing better could be a funnel fit at the tip for returning the tester to the mount. since it is a blind return for me a funnel fit at the tip would be beneficial. I'll see what I can do. installed with duel lock velcro. this sump tester is literally at my fingertips. no more excuses for sumping the tanks. Master Sargent Ray Parker is in to have a look. I stand as straightly as I can. Ray sumps his tanks at every fill.

**
**

new lower pocket for ease of finding in the dark. just get it close and it will find the home. some complicated geometry in there, amazing.



**
**

a nice part






Steve Melton 11-15-2019 08:56 PM

Lycoming crankshaft
 
very early stages of a Lycoming crankshaft.



**
**

some headway for the base structure


Snowflake 11-16-2019 09:50 AM

Quote:

Originally Posted by Steve Melton (Post 1386568)
very early stages of a Lycoming crankshaft.

You'll print that using ABS, or Nylon? Got a TBO estimate yet? :cool:

Steve Melton 11-16-2019 11:15 AM

Quote:

Originally Posted by Snowflake (Post 1386639)
You'll print that using ABS, or Nylon? Got a TBO estimate yet? :cool:

TBO = 0 cycles :)

to be used as an analysis model to understand the torsional response with prop mass inertia. it is slow process to make this model but making some headway.

on a side note: I shipped the first RVPlasticParts without leaving the home. USPS Printed labels and tracking, boom done! Life can begin to return to normal for me.

Steve Melton 11-16-2019 04:36 PM

LightSpeed Tango
 
LightSpeed Tango control module. Needs to fit with cover on. I'll give it a try.



All times are GMT -6. The time now is 06:54 AM.