Rubber / Braided Fuel and Oil lines

[cherokeered]

What size does everyone use for Rubber and Braided Fuel and Oil lines. I found a few options and I just want to be as close to accurate as possible. I have .019in and .64mm and .81mm for the Rubber Hose options so far and I need to get the correct braided fuel line for my Pro Sportsman engine I'm working on. For 1/25 scale.

Edited August 1, 2012 by cherokeered

[southpier]

telling the scale you're working in will help the guy with the correct answer (not me!)

Edited August 1, 2012 by southpier

[cherokeered]

Oh sorry...1/25 scale

[Ace-Garageguy]

#12 Aeroquip braided is pretty common for oil lines on race cars. It's listed as having an outside diameter of .94", which is pretty close to one inch. Divide by 25, you get .040", or about 1.mm. Fuel line will possibly be smaller on a gasoline-burning car, possibly the same on an alcohol-burner.

[futurattraction]

I just bought some .025 and .035 braided line from Charlie and Pro Tech for my fuel lines for my 1/25th build. Most gasoline-fueled street and drag cars will probably run somewhere around #6 to #8 braided line, which is approximately equivalent to 5/16" and 3/8" ID, if I recall correctly. #10 line would be for something that requires a lot of fuel.

[cherokeered]

Good info...thanks!

[TedsModeling]

I know this isn't related to 1/25 scale directly, but I have tables showing the scale equivalent sizes to 1:1 hoses, braided lines, nuts and bolts here: http://www.tedsmodelingmarketplace.com/links

If you go to the individual braided, hard and soft line items, you'll find reference to what that size line would be used for. Example of a .040" hose: http://www.tedsmodelingmarketplace.com/item/added-in-july/soft-line-hose-039-1mm-od/lid=31634829

Use these formulas to find a 1/25 scale or real world size:

Find a 1:1 size when you know the scale size: 1:1 size * .04

Find a scale size when you know the 1:1 size: scale size / .04

Using William's thought of finding a scale size for a 12AN hose: 1:1 size (.94) * .04 (for 1/25 scale) = .037.

You could choose a .035 braided line or a .040 braided line. See the above link to determine what a .040 hose would be used for.

[southpier]

good links Ted; thanks

[Ace-Garageguy]

I just bought some .025 and .035 braided line from Charlie and Pro Tech for my fuel lines for my 1/25th build. Most gasoline-fueled street and drag cars will probably run somewhere around #6 to #8 braided line, which is approximately equivalent to 5/16" and 3/8" ID, if I recall correctly. #10 line would be for something that requires a lot of fuel.

I've seen #10 Aeroquip delivery line on a twin-turbo'd, direct-port injected 351C in a DeTomaso Pantera with methanol injection (because there's no room for intercoolers), on the street. #10 AN for fuel is ususally spec'd for applications making around 1000 WHP. It's a little overkill (the old Pantera is only dynoing around 780 flywheel) but like I said, fuel line will possibly be smaller on a gasoilne burning car. #8 is about the smallest for something really fast, at least in my experience.

#8 is the smallest you'd ever want to run for OIL, also in my humble opinion.

ALCOHOL fuel has much less energy per=volume than gasoline, so you have to burn a lot more of it. Hence, it takes a lot fatter fuel lines to get it to the engine.

AN hose sizing chart:

http://www.angelfire...428/ANHose.html

The AN hose numbers loosely refer to the number of 16ths of an inch of the ID, hence dash-8 is 8/16 nominal, or about 1/2" (and actually closer to 7/16").

Edited August 1, 2012 by Ace-Garageguy

[comp1839]

i might be able to help a little here. i am assuming your pro sportsman model's engine is a carbureted big block with a dry sump.

the fuel system would typically be plumbed like this:

1) from tank to pump -12 or -10

2) from pump to regulator -10

3) from regulator to carbs -8 or -6 (most are -6)

the dry sump oil system would be typically plumbed like this:

1) scavenge lines from pan to pump -10 or -12

2) pressure lines from pump to tank (if individual) -10

or

pressure line from pump to tank (if manifolded) -16

3) scavenge line from tank (at bottom of tank) to pump -10 or -12

4) pressure line from pump to oil filter -10

5) pressure line from oil filter to block -10

if you have any questions, just ask.

hope this helps.

[pharr7226]

Dave, I hope your answer helped Jason. It definitely helped me. Thanks.

[cherokeered]

It helped a lot....thanks

[comp1839]

let me ask you guys a question. would you like a tutorial with pictures on typical 4 and 5 stage v-8 dry sump systems? i could also do a typical fuel system for dual 4 bbl, and 4-2 bbl. carb. systems. let me know.

Dave, if you decide to do this, and I think it would be very helpful, please post it in the "Tips, Tricks, and Tutorials" section. That way we won't have to move it for you! Thanks. -- MODERATOR

[futurattraction]

I think that's an excellent idea, Dave. I, for one, have never totally followed the schematic for dry sump systems, in particular.

[Ace-Garageguy]

Dave, I hope your answer helped Jason. It definitely helped me. Thanks.

Me too. Thanks.

[TedsModeling]

It would be much appreciated, Dave.

Then maybe a nitrous layout with all of the solenoids and injectors.

[futurattraction]

Good idea, Ted...

[comp1839]

let me ask you guys a question. would you like a tutorial with pictures on typical 4 and 5 stage v-8 dry sump systems? i could also do a typical fuel system for dual 4 bbl, and 4-2 bbl. carb. systems. let me know.

Dave, if you decide to do this, and I think it would be very helpful, please post it in the "Tips, Tricks, and Tutorials" section. That way we won't have to move it for you! Thanks. -- MODERATOR

if i do this. i will place it there. thanks for the advanced notice.

Edited August 6, 2012 by comp1839

[cherokeered]

It would be much appreciated, Dave.

Then maybe a nitrous layout with all of the solenoids and injectors.

That would be great!

[Prostreet]

That would be very nice of you to do that Dave, would be very helpful.