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  #11  
Old 01-22-2022, 05:12 PM
dinowal dinowal is offline
 
Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 94
Default Fuel sticks

I have made 2 of these, one with round dowel, one with 1/4 square dowel. Quite a bit easier to see the fuel on the face of the square one. The bend is easy to achieve by steaming over a pan of boiling water. Sand the end nearly to a point to navigate down the fuel neck. From one who knows: do not leave stick on wing when taxiing back to hangar, you won’t see it again & will have to make another…
Cheers, Dean
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  #12  
Old 01-22-2022, 07:50 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 3,253
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I use a piece of translucent brake line and use it as a dip tube. It easily goes around the bend in the filler neck and I don’t have to worry about breaking it.
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  #13  
Old 01-23-2022, 07:20 AM
olyolson's Avatar
olyolson olyolson is offline
 
Join Date: Dec 2009
Location: St Louis, MO
Posts: 1,160
Default Fuel dip stick

Rich,

I like the simple translucent brake line idea, how do you mark the lines for the fuel quantity? I made some wooden dowels for my -8 and stained them, painted the fuel marks and sealed them. They look nice but still a bit hard to read the fuel on the stick.

I also like the carbon fiber idea. Any place to just buy some small CF rods and mark them myself?
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  #14  
Old 01-23-2022, 07:48 AM
bobnoffs bobnoffs is offline
 
Join Date: Jul 2012
Location: n. wi
Posts: 926
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maybe a little pricy but over and done......arrows are made of carbon fiber these days.i've had one in my hangar 10 yrs marked for the last plane i built.
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  #15  
Old 01-23-2022, 08:38 AM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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Quote:
Originally Posted by bobnoffs View Post
maybe a little pricy but over and done......arrows are made of carbon fiber these days.i've had one in my hangar 10 yrs marked for the last plane i built.
Carbon Fiber Rod is pretty stiff and won't negotiate the bend in the filler neck very easily. I made a measuring stick from 3/16” wooden dowel and filed small notches at the gallon marks. Tip of rod should be rounded to skip past tank flange. I think I used a lead pencil (graphite) to highlight the marks. Leave dowel un-treated so fuel absorbs and is easily seen against the dry wood.

In any event… I stopped using the stick when I added the Moeller float gage on the top of the tank. Dead accurate and very repeatable. Excellent for monitoring fill level when adding fuel to prevent overflow.

I bought a placard from Aircraft Engravers to quantify the Moeller gage. Cost was $28.
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  #16  
Old 01-23-2022, 10:19 AM
bobnoffs bobnoffs is offline
 
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Location: n. wi
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the arrows are hollow but you are right they probably won't work for a 12.
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n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
RV-12 airworthiness cert. 11/30/2021
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  #17  
Old 01-23-2022, 01:04 PM
seagull seagull is offline
 
Join Date: Dec 2019
Location: Highland, CA
Posts: 470
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You are all right, carbon is way over the top for a fuel stick. As I said in the beginning i had some time to burn so it wasn't an issue. I spent many years in the aerospace industry working with composites so this was right in my wheelhouse. I don't know of a way to produce these for a reasonable price considering the time involved.

My stick is laid up carbon fiber filament infused with epoxy. The process requires a mold that is in the final shape (curve). The stick, once cured has very little flex. After curing the lines were cut deep enough to hold white paint, paint that isn't affected by the gasoline. After the paint is dry the stick is surface sanded so the paint is flush with the carbon. One secret to making it readable is the sanding vs leaving it gloss.

When I made a stick using a wood dowel, (obviously you have to start with a dowel with the correct curve to navigate the filler neck). I coated the stick with slow set JB Weld, warmed it with a heat gun to make it flow like paint and brushed it on. Then sanded it with 220 wet / dry. I then added the marks with the corner of a triangle file around the dowel, no paint on this one. The sanded JB Weld is light grey but darkens when wet it very readable and the JB seals the surface so repeat readings are possible.
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Last edited by seagull : 01-23-2022 at 01:12 PM.
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  #18  
Old 01-24-2022, 07:52 PM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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Oly,

I calibrated the translucent dip tube in 5 gallon increments when I did the initial tank level calibration. Note that it’s pretty much linear until you get to the last 5 gallons when the filler neck begins to fill up.

I put notches on the tube to mark the 5 gallon increments. Be careful to not go through wall on the notches.

Rich
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  #19  
Old 01-25-2022, 07:09 AM
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Jeff Vaughan Jeff Vaughan is offline
 
Join Date: Jan 2005
Location: West Chester, Pa
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Here is my solution from a previous post
https://vansairforce.net/community/s...d.php?t=179622
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  #20  
Old 01-25-2022, 04:37 PM
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Rayh Rayh is offline
 
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Location: Kingsland, GA
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Jeff I sent you a PM.
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