OUT IN THE WORKSHOP (turning a ht into a saxaphone)

HeadSmess

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REEEEEEEEEEEEEDSSSSSSSSSSS


playing with my lil toy.

first pic is the first attempt that i sorta stuffed up...

then the next one is the success story :)

havent actually installed yet, waiting on a new piston after having to use my spare one elsewhere... grrrr!!!!!

last pic you can juuuuust see the reeds.... no, that isnt the intended carb mount...


this is all by eye! i am not cnc enabled yet!

sooooon, my precious, soooon :giggle:
 

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cus, unlike simpletons, i cant go home, turn on the telly and veg out.

i have a brain, i like to use it.

why do ppl climb everest? why do ppl get up in the morning? why do birds fly?

why anything? why live?

(practical reasons are because reed valves improve performance)
 
What a great piece of work! Especially by eye! What does your machine shop consist of?
 
um, what have i got?

not enough spanners and too much junk!


two lathes, big and small, and yeah...no where near enough tools to make me happy.

currently my mills having a breakdown so the other half of this jobs sitting in a vice, waiting... the mount for the mikuni carb.

the mill is only small, but its very handy. also kitting it out with CNC so in a few more weeks, ill really be showing off...(my collection of destroyed cutters, :LOL: )
 
cus, unlike simpletons, i cant go home, turn on the telly and veg out.

i have a brain, i like to use it.

why do ppl climb everest? why do ppl get up in the morning? why do birds fly?

why anything? why live?

(practical reasons are because reed valves improve performance)
Other than the first 4 lines above being unnecessary, thanks for your reply. I asked why, because I wanted to know why. I'm no small engine mechanic, or any kind of expert as regards any engine at all, and I figured there was some practical reason for your efforts. I'm also always interested in learning new things, so I tend to ask questions.

Oh, and by the way - I don't watch television except in the doctors office in hyperbaric treatment - they won't let me take a book in with me.
 
ok, ok, just that i have issues being asked that question :p sorry. it seemed like you were being smart....

if you want to leeeearn though....

reed valves are fited to most high performance two strokes, as it is the easiest and most reliable way of increasing crankcase compression/intake timing.

the options are piston ported. (most cheap 2 strokes, as its, well...cheap... but ineffecient)
reed valves. so simple. a flap and a hole makes a one way valve :) cox .049 to a cr500 use em with proven success...
disc/ drum induction. was used on various motorcycles, and usually the drum version is seen on RC marine engines... hard to seal. biggest issue. seal and wear.
crankshaft induction. standard on rc cars/planes.

why the interest in induction timing?

the longer you can keep it open means the more air/fuel gets in.

problem that piston porting has is that while the port is open and sucking in on the upstroke, its also open and blowing back out for the same amount of time on the downstroke. sheer momentum of air keeps it travelling the right way...in.

the longer you can keep the port closed on the downstroke, means more air/fuel is forced into the combustion chamber when the transfer ports open.

more air/fuel means only one thing.

more get up n go :D


and as for "why?" being taken the other way....i ask myself that tooo :p tis why i had such a good reply :D

(ps, what are they scared the book will do?)
 
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