Adding A Reed Cage ?

[Magic_Man]

This was talked about briefly in the intake block thread. Has anybody messed with adding a reed cage to a saw ? I know some older saws had them, but I'm thinking more of a performance based valve from a small dirt bike. I found this one off of a 50cc Husqvarna , looks like it would be easy to fabricate around.

http://www.ebay.com/itm/Husqvarna-C...ash=item46432bd168:g:gWAAAOSw14xWKADb&vxp=mtr

I have a Husqvarna 51 with a closed port 55 top end that might make a good platform for experimenting since it has that goofy plastic partition/intake thing.

 

[Jughead]

Not to a saw but have looked into adding to piston port bikes.size is a restriction on saws though.the one you have up would be a good start but would probably be sized more for a 85-100+cc saw due to carb and intake size on dirt bikes.
The kawasaki triple and suzuki guys i used to be around were maniacs when it came to adding reed cages.

 

[Jughead]

Here's one.the reed cages are case induction.the intakes on the cylinders are blocked.

My friend John Aylor makes this kit

I have one of these kits to go into my t500 unfortunately i havent had time to install it. Sorry Moo.

 

[Magic_Man]

Interesting, am I correct in thinking that if a reed is added to the intake then the intake port could have as much duration as mechanically possible ? Because the reed would prevent spit back and the case compression would be against the reed, not the piston.

 

[Jughead]

yeap.i would think the only thing stopping full duration on the intake induction would possibly be weakening of the piston.

 

[Jughead]

im not much help on this stuff anymore.i used to bathe in information continuously from 96-09 but life took over and i've forgotten way too much.

 

[Magic_Man]

Not to a saw but have looked into adding to piston port bikes.size is a restriction on saws though.the one you have up would be a good start but would probably be sized more for a 85-100+cc saw due to carb and intake size on dirt bikes.
The kawasaki triple and suzuki guys i used to be around were maniacs when it came to adding reed cages.

So it looks like the little engines that use this cage came with either a 14mm carb on the Jr model or a 19mm on the Sr model.

 

[Jughead]

Hey magic man check these out theyre affordable for experimentation.

 

[Magic_Man]

@Jughead Nothing there buddy ?

 

[Jughead]

Opps
http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=pocket+bike+reeds&_pgn=2&_skc=50&rt=nc

 

[Jughead]

This looks close to my tanaka trimmer.too expensive to try but would be super cool to try out if it would.
http://www.ebay.com/itm/TR-OBR-4-BO...204135?hash=item4af7df91e7:g:P98AAOSwa39Usc6W

 

[Al Smith]

Art Martin who seldom said much about that legiondary souped 090 he had from years ago once had a small comment about it on a site I no longer and will never post on again .

According what he had said that engine was built to use reed valves via the transfer ports .
I might add the ole boy also had an interesting design on a race chain .It was cutter-cutter space as oppossed to standard which is cutter space cutter .Fact I have pictures on my other computer if I can find them .
If anybody has an interest you might search the archives of A-site under D Babcock .That is unless they got deleted .

 

[Magic_Man]

Sounds interesting, have to see if I can find some info.

 

[David Young]

Adam Clarke put one on a 359. On the old race saw site. It was part of a built off against Brian Wright (tw). Beautiful work by Adam but didn't show well against Brian's saw.

It lead me to believe adding a reed wasn't a good plan

 

[chy_farm]

Here's one.the reed cages are case induction.the intakes on the cylinders are blocked.
View attachment 5993
My friend John Aylor makes this kit

I have one of these kits to go into my t500 unfortunately i havent had time to install it. Sorry Moo.

Hello Jughead, thank you for sharing wonderful pics of the Kawasaki, love to see them. Wanting to fabricate one for my old McCulloch 795 with a sheet of carbon fiber. The purpose is to raise the rev velocity to 13000.
Thanks again.
Chy

 

[Bob Cornwell]

And the Baumr Ag SX92 uses one along with the 92cc Giantz

 

[Bob Cornwell]

McBob

 

[Bob Cornwell]

 

[chy_farm]

Found a couple of manifolds for old McCulloch nicely designed Bob,


My assumption is that HE put some best reed valves in this, but do not know if he put carbon or not...
Chy

 

[Bob Cornwell]

only if you don use the original fuel tank