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Old 12-07-2017, 03:12 AM   #1
nick1881
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Default 90% to go on an S1T

Been working slowly trying to knock out this s1T one project at a time. Currently finishing up the brakes, but I’m starting to think about how the fuel system should be done. It has a Gordon price “ultimate” Pitts fuel tank. I’ve seen a couple of guys on here that have the same tank and was wondering if I could get more information on it. To my knowledge it has an internal header tank....anyone have a drawing for this, so I can figure out in my head what the inside of this tank looks like? Here is what it looks like, as well as a drawing of my proposed fuel system...


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Old 12-07-2017, 06:41 AM   #2
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I know nothing about that tank but the Dusters use a tank with internal header. I'd think you would need two vents, both upright and inverted which are provided in my AD2 tank....

Also, a servo, at least the Bendix does not have a return. The Duster tanks do have a return inlet for use w/PS5C.


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Old 12-07-2017, 09:39 AM   #3
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Default Tank

The tank as drawn will vent both compartments via the sight gage. IIRC removal of the tank shown requires removal of the upper wing. I went thru three standard factory tanks in my S1S in 1000 hours.
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Old 12-07-2017, 02:42 PM   #4
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I have this same tank in my project, it does have an internal header built in which is the compartment your flop tube sits. My tank only has one vent coming out the top forward part of the tank where your showing the return line coming back in. I would think you would want to move your vent as far forward as possible so that when you top it off sitting in the three point atttitude you can maximize tank capacity without it venting out.
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Old 12-08-2017, 12:37 AM   #5
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Quote:
Originally Posted by Tomcat View Post
I would think you would want to move your vent as far forward as possible so that when you top it off sitting in the three point atttitude you can maximize tank capacity without it venting out.

I know of a S1 that will only hold 15.5 gallons before it starts overflowing from the vent.
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Old 12-08-2017, 12:53 AM   #6
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That being the case they should make the tank smaller and save some weight.
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Old 12-08-2017, 02:04 AM   #7
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Your drawing looks correct,just weld in a divider where the tank starts making the V,
Drill some small hole in the divider
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Old 12-08-2017, 04:04 AM   #8
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Alright great thanks guys. Looks like im on the right track with a minor tweak here or there. Danny and Tom, how many gallons does this tank hold?

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Old 12-08-2017, 02:41 PM   #9
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I believe it's 24 gallons, 23 useable.
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Old 12-08-2017, 04:49 PM   #10
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I believe that Gordon offered a 23 gal,and a 19 gal tank back in the day
The prototype I have has the 19,and that's more fuel then my butt can stand on a X country.
One other thing ,be aware of how your rudder pedals are going to work out,I have a hard time getting my size 12 shoe,in beside that tank
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Old 12-08-2017, 05:23 PM   #11
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Since we're talking about Gordon's stuff does anyone want one of those ''over the top wing'' ferry tanks he used to sell? I have two and will give them away if someone will pay shipping. One's painted, the other in aluminum finish. I never tried one of these either.

If you want to make your Pitts/Ultimate look like a Tiger Moth give me a call....operators are standing by.....
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Old 12-09-2017, 12:22 AM   #12
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If you want to make your Pitts/Ultimate look like a Tiger Moth give me a call....operators are standing by.....[/QUOTE]

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Old 12-09-2017, 12:35 AM   #13
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I also have one of those wing tanks,still has fire stop in it
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Old 12-09-2017, 01:17 AM   #14
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Ben, PM sent.
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Old 12-09-2017, 01:40 AM   #15
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Quote:
Originally Posted by race38 View Post
Ben, PM sent.
Got it and sent back.
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Old 12-09-2017, 02:15 AM   #16
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Free airplane parts, can't beat it.
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Old 12-09-2017, 05:43 PM   #17
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Ordered and now waiting in parts to come in, so had some extra time. Had a good friend has been welding professionally for 40 years come over and help me setup this Lincoln squarewave 175 that’s in the hanger I’m renting. My dad taught me to gas weld as a kid and I messed around with TIG maybe twice in high school and that was over 10 years ago now, so I was quite excited to get going. My steel welds ended up starting to look OK and my first few attempts at welding aluminum!! So cool
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Old 12-09-2017, 09:31 PM   #18
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Got the same welding machine at work, just haven't taken the time to get up to speed on aluminum. something I need to do I suppose.


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