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[Motorman]

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[Larry Renger]

Buy a new syringe and use the modified plunger?  Not that expensive and a lot easier! 

[Mike Keville]

...or you could just order a new one from Lee Machine Shop (Jim Lee) = jlee9 at cox dot net.  Top quality, decent price, lasts forever.

[Larry Renger]

Not quite, I have replaced his O-rings with ones made of Zytel, which is much more fuel resistant, diesel, included. Otherwise, an excellent choice. But if the casings are shrinking, that is easy and cheap to replace.

[Mike Keville]

Well, no one having a sense of smell uses Diesels anyway.         

[Brett Buck]

Not quite, I have replaced his O-rings with ones made of Zytel, which is much more fuel resistant, diesel, included. Otherwise, an excellent choice. But if the casings are shrinking, that is easy and cheap to replace.

  I use the red one, which I think is Silicone. It is FAR better than the black rubber, I have had the same syringe for something like 12 years now and no apparent degradation or other change.

    Brett

[rustler]

Well, no one having a sense of smell uses Diesels anyway.         

You cheeky Deville Keville! I've a good mind to enter your profile event with a diesel 049! 

[john e. holliday]

The tubes I have didn't shrink, they expanded.  Got around that by using Teflon tape under the O ring.  But, I store my syringes with the plunger part way out.   Also Uncle Mikey I may also build a 1/2A scale with a diesel.   Still have my Davis Diesel Conversions.

[BillLee]

I think I'll come and just run my F2C engines in the pits just to annoy Mike!   

[Steve Helmick]

I prefer the "Mustard" pump over a syringe. Each full stroke delivers exactly 1 oz. I do have a 1 oz syringe hanging on the side of my fueler unit to pull out a fraction of an ounce, but the current plane uses 6 strokes/ounces. I can probably get close enough to 1/2 oz if I need to, but don't need to. The pump shown was given to me by Da Dirt about 15 years ago. I modified the jug setup a little and at that time, gave the original to Ben Jones, who says it still works great. Mine just soldiers on, and spends all year immersed in fuel, year after year. The piston has no o-rings. The only caution is to "prime the pump" before your first outting in awhile, or just fill the tank and suck out an appropriate amount. These pumps will fill a surgical tubing tank with no trouble at all. I get the pump from TAP Plastics (cheap) and the fittings from Central Hobbies (Butte, Montana R/C shop)...not very cheap.  IMO, the fuel is cleaner than out of a syringe.   Steve  

[john e. holliday]

I guess I had better get on the stick and get my pump out that I bought at VSC several years ago.   Have print outs of all the set ups of it and have been too lazy to get it done.

[Brett Buck]

 IMO, the fuel is cleaner than out of a syringe.

     Then why do you need a giant automotive filter on the output? There's nothing to filter in the fuel as it comes from the factory. Everyone around here that has used these pumps has had massive problems with fuel contamination, people with Carl Shoup syringes have had no issues at all.

     Brett

[Steve Helmick]

I have a "gigantic" R/C car filter on mine. The intent of the 'big' filter is simply to flow faster, thus not explode the wimpy silicon tubing...other than that one time, when I leaned on the pump too hard and shredded the silicon tubing, despite the large filter.  And, of course, to not require constant maintenance. I can't explain your problems with mustard pumps, but I have not had any trouble at all.

Leaving a syringe laying on pavement or grass is often seen, and the source for a lot of fuel feed troubles, but results vary.  Steve

[peabody]

Big Jim said "always filter the fuel"........

I have a Jett fueler that's ten years old.....works well