O.S. replacement valves

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Ninja Z28
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O.S. replacement valves

Post by Ninja Z28 » Tue Jun 14, 2011 12:11 pm

I just got a O.S. Marl II. I would like to get a few extra reed valves.
Where can I get them?
hear is my Jet http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... MEWNX%3AIT

will dynajet valves work?

gone2fly
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Re: O.S. replacement valves

Post by gone2fly » Tue Jun 14, 2011 6:27 pm

How many reed valves do you want?

Ninja Z28
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Re: O.S. replacement valves

Post by Ninja Z28 » Wed Jun 15, 2011 1:31 am

it comes with 2. i would like quite a few so i don't have to worry about finding more. they last about 30 min each right?

Ninja Z28
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Re: O.S. replacement valves

Post by Ninja Z28 » Wed Jun 15, 2011 10:14 pm

can any one I.D. these? will they fit the O.S.? http://cgi.ebay.com/New-Flutter-Valves- ... 564482e515

Mark
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Re: O.S. replacement valves

Post by Mark » Wed Jun 15, 2011 10:34 pm

They are Japanese Tigers and as it says 1.5 inches across. O.S. reeds match Dynajet reeds and are larger. Does your O.S. reed come in 2 halfs - 5 petal units? From left to right is my Dyna-Jet, Tigerjet, and Bailey Jet. The O.S., Dyna-Jet, and Bailey Jet will all take the same reeds unless modified. I have seen "bigfoot" reeds for sale which are a tiny bit wider than the typical Dyna-Jet reed, that fit over the tens ports that have been slightly widened or bored out for more speed I suppose.
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Mark
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Re: O.S. replacement valves

Post by Mark » Thu Jun 16, 2011 11:53 pm

Tigerjet and Dyna-Jet reeds comparison. Two of my spare reeds.
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gone2fly
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Re: O.S. replacement valves

Post by gone2fly » Fri Jun 17, 2011 2:21 pm

Ninja Z28 wrote:it comes with 2. i would like quite a few so i don't have to worry about finding more. they last about 30 min each right?
If you send me the head with the reed valve retainer I can make a new better design retainer and the reed valves will last 40 hours. Only problem I am moving my shop across town to a larger building it will be a couple of months before I can do anything in my shop. I can make you 30 new reed valves too.

Ninja Z28
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Re: O.S. replacement valves

Post by Ninja Z28 » Sun Jun 19, 2011 11:43 am

Mark wrote:They are Japanese Tigers and as it says 1.5 inches across. O.S. reeds match Dynajet reeds and are larger. Does your O.S. reed come in 2 halfs - 5 petal units? From left to right is my Dyna-Jet, Tigerjet, and Bailey Jet. The O.S., Dyna-Jet, and Bailey Jet will all take the same reeds unless modified. I have seen "bigfoot" reeds for sale which are a tiny bit wider than the typical Dyna-Jet reed, that fit over the tens ports that have been slightly widened or bored out for more speed I suppose.
i am deployed right now. i will look next week when i get home

Ninja Z28
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Re: O.S. replacement valves

Post by Ninja Z28 » Sun Jun 19, 2011 11:44 am

gone2fly wrote:
Ninja Z28 wrote:it comes with 2. i would like quite a few so i don't have to worry about finding more. they last about 30 min each right?
If you send me the head with the reed valve retainer I can make a new better design retainer and the reed valves will last 40 hours. Only problem I am moving my shop across town to a larger building it will be a couple of months before I can do anything in my shop. I can make you 30 new reed valves too.
do you have a price and a time frame?

dynajetjerry
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Re: O.S. replacement valves

Post by dynajetjerry » Thu Jun 23, 2011 7:38 pm

Gone-2-fly,
I'm interested in how you managed to improve pulse-jet valve life to 40 hours. What is the static thrust with your retainer? All Dyna-Jets I worked with had valve lives that were inversely proportional to thrust: One developed 3/4 lb. more thrust than the standard D-J but the reeds burned up within about 10 minutes. Another lasted more than 1 hour but its thrust was about 3-3/4 lbs on gasoline. (I never did much research on other fuels.) How much for one of your retainers?
Jerry Wiles
Louder is always better.

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