10/32 nipple jets

Mike Hughes · May 21, 2016

I was talking with someone about making some of these at Hobart last year. The someone said they are available from a manufacture. I think it was John Beardslee. But my memory aint what it used to be. Was looking for a source to get some. Cant seem to find them. Or maybe Im just not calling them correctly in my searches. Looking for some in the range of .015-.020".

Mike

John Beardslee · May 22, 2016

Hi Mike,

Not sure I understand what you mean, what's your application or discribe how they're used maybe that will jog my memory.

Thanks, John

shoboat · May 22, 2016

Mike,

Was it a restrictor in the water line?

Like the tee fittings off the rudder?

Let Us Know?

Mark Sholund

moparbarn · May 22, 2016

Mike, are you talking about the bent, restricted K&B water fitting that could be used in conjunction with a needle to turn an outboard front housing into a venturi? Like the mod outlined in the old Prather mod kit for the Spitfire OB rigger? Part # 84-5903, in stock at Mecoa, $6.85. FYI, the hole through them is 1/16".

Mike Hughes · May 22, 2016

Basically it was a nipple with a 10/32 thread on one end that had a bored hole thru it. Using it for a carb. No needle. Fixed flow of fuel.

Patrick Au · May 22, 2016

Mike, are you want a straight nipple/fitting with 10-32 thread? I have some brass made 5mm thread straight nipple/fitting may suit your need.

I can send pic through email for review.

Patrick

moparbarn · May 22, 2016

Silver solder a water nipple closed & drill it to suit.

Mike Hughes · May 22, 2016

Yeah thats probably what Im gonna do. Was thinking some would be color coded or something to keep track of size. Got so much to do around the house now with the nice weather. Anything I can buy would help with that. Oh well. Its garage cleaning day. Need to lay up some parts and the vacuum bench is chalk full of crap. No room.

Ray Sametz · May 22, 2016

How about a 10/32 grease fitting? McMaster Carr.

Tony Jacuzzi · May 22, 2016

Not sure if this sortta what you were thinking but Mike Z (Grimracer) used to sell a 10/32 water fitting with different size inserts that screwed in to adjust the water coming up through the rudder

John Beardslee · May 22, 2016

Mike Hughes said:
Basically it was a nipple with a 10/32 thread on one end that had a bored hole thru it. Using it for a carb. No needle. Fixed flow of fuel.

Hi Mike,

I remember, we were talking about using "fixed sized jets" instead of an adjustable needle valve. Ron Logghe and I made some right after we started using the propane flow meters that Tom Hyner designed, we thought that type of flow meter would compensate for weather etc. but it didn't so we stopped trying the fixed jets. Carl Bray of CeeBee products also made some around the same time. Our fixed jets went in fuel line from the tank to the spray bar, they were made from brass rod stock to fit in the fuel line. They were about an inch long and we predrilled from each end over sized and left a thin web in the center. We used small number drills to drill the web but made a sizing tool from music wire by putting a long tapered point on the end of it with a belt sander and using it like a hand reamer polish the hole in the web to get the flow numbers we wanted that matched our recorded numbers from test with inflight needles. We chamfered and softened all the flow edges so the fuel had a nice smooth route to the carb. Hope this helps.

Thanks, John

Mike Hughes · May 23, 2016

Oh great, my memory is not as bad as I thought. LOL Thanks John. It is helpful. Just need to find the time now.

John Beardslee · May 23, 2016

Hi Mike,

I found some of mine, pm me your address and I'll send you what I have. These were for my .80 twin, so they may be to large but at least you'll have a sample of what we did. With Boris' flow meter I think it might be worth revisiting the fixed jets.

Thanks, John

Grimracer · May 23, 2016

woods racing products.

Grim

steve wood · May 23, 2016

Tony Jacuzzi said:
Not sure if this sortta what you were thinking but Mike Z (Grimracer) used to sell a 10/32 water fitting with different size inserts that screwed in to adjust the water coming up through the rudder

I made those. still have them around.didn't sell well enough to fool with

10/32 nipple jets

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