Fuel tank cap

Mjsas on Thu Jun 23, 2016 9:59 am

I am building a Baby Barnstormer with a pressure TeeDee .049. I need a old style oil cap as shown in the picture. The picture is just an example I copied off the internet and is only to show the oil cap.

With a bit of work these old oil caps can be fitted to be the filler caps on a pressure fuel tank. With some gasket paper they are both fuel tight and pressure tight. To fill the tank just open the cap and fill it up, no need to mess with unplugging any lines.

Anyone know where I can get one, when I was much younger they were everywhere?

fredvon4 on Thu Jun 23, 2016 10:41 am

probably too big but a search turned these up on the e-aby

http://www.ebay.com/itm/Vintage-Gas-Engine-Lathe-Machine-Tool-Oil-Cups-Gits-Bros-Spring-Lid-4pc-Lot-NOS-/322074727551

OVERLORD on Thu Jun 23, 2016 11:10 am

Paul Beck vintage car parts in the UK has got them with 1/4" thread

https://www.vintagecarparts.co.uk/products/ca480-small-cup-oiler

https://www.vintagecarparts.co.uk/products/322-oiler-flip-top

https://www.vintagecarparts.co.uk/products/323-oiler-flip-top-1

crankbndr on Thu Jun 23, 2016 11:20 am

I think they were called Gits caps, Woody Bartelt still sells old engine parts, don't know if they could hold pressure though.

http://www.woodysengines.com/shopping.htm

fredvon4 on Thu Jun 23, 2016 12:43 pm

Years ago I saw these used for racing models using muffler or crank case pressure and I guess they work fine for the low pressure

I think they were part of the tank vent and lifted slightly while fast refueling then let snap shut and crank/fire go racing

Marleysky on Fri Jun 24, 2016 9:09 am

I don't know how much room you have to work with but the Traxxas brand car/truck makers offer tanks with spring loaded fill caps:

https://traxxas.com/products/parts/5363

https://traxxas.com/products/parts/5548

https://traxxas.com/search?keyword=Fuel+tank

If you don't like extra long flights....don't fill it up all the way!!

steve thornton on Sat Jul 16, 2016 1:26 am

You might try Texas Timers they have any kind of bladder fitting you could ever want. any Free flight or combat guy can steer you there, or Rusty may reply to this...he told me about TTTimers.
steve

dizzy Z on Tue Oct 11, 2016 10:05 am

If Your still looking,they are called,the Real McCoy....In 1871 Elijah McCoy invented a device for lubrication on locomotives....There was lots of imitations,so His was asked for..."The real McCoy"....Still used in Electric motor rebuilders part bins....Z

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