DIY Reed valve breather.

toglhot

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I made this little gizmo yesterday, finished it off this morning with the bead blaster. I was going to polish it, but damn this gizmo looks good with a bead blasted finish.
Petal was taken from a pit bike read valve and cut in half, two holes drilled and screwed to the base plate. Base plate was tapped M3 10mm deep to take the petal. Not fun tapping this small, but, this time around the tap survived.
Main body was carved out with an endmill to give the petal room to move and air to flow. Base plate has a channel on the engine side for any oil to run down back into the rockers. Topside was channelled either side to get the Allen heads level with the top surface. Stainless Allen's were turned to make them shiny, I do like shiny baubles.
Outlet spigot is 16mm with a 10mm hole. If it's not big enough I can take it out to 12mm later on.
Air from the engine enters the main body from the reed valve is channelled upward, does a U turn and travels downward to the outlet spigot, losing a little oil on the way. Any oil trapped before the reed valve is channelled back to the rockers.
I'll have to design and build a catch can now, thinking of mounting it behind the downtube between the carbs. But, it's getting a little busy in that area.
Manual machining only, would love a CNC, but not in my budget, would've made things a lot easier
 

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Yes, I must admit I was surprised at how well it came up, the bead blasting instead of polishing makes it look smick. Bead blasting on nice straight surfaces looks very nice, a lot like anodising, I'll be interested to see how it wears, oxidising wise. Although clear coat would stick rather well me thinks.
 
Nice work. The reed stopper is curved so the reed, as it opens gets a gradual bend in it. Without it the reeds gonna crack at the screw holes.
 
Yep, I have the original, but' it don't fit, so I'll have to make another.
 
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The big question is, what will I make next, I lie awake at night thinking of things to make, I'm now running out of ideas. Perhaps I should build cars, they have a lot more bits in them I could make.
 
The big question is, what will I make next, I lie awake at night thinking of things to make, I'm now running out of ideas. Perhaps I should build cars, they have a lot more bits in them I could make.
I know that feeling well. Most often, I resort to making things that I felt were needed to improve shop operations; a pair of thumbscrews to hold the fence on the miter fixture on the shear, a spring-loaded tap guide for threading operations on the lathe, a stop-post for the drill press table, a sandblasting pressure pot, and so on... always something to fabricate!
 
For this bike I've made a tail light, battery carrier, side panels, seat pan, rear, front and top engine mounts, manifolds, headlight brackets, PMA mount, single points backing plate, single points cam, reed valve breather, brake line block, fuel distributor, spin on filter mount, oil cooler mount, speedo, ignition switch and coil mounts, cable splitter. Plus all the stainless bolts I turned down and polished, stainless barbs I turned up. Then there's all that polishing: Side covers, valve covers, carb caps and float bowls, side panels, forks, headlight brackets, engine mounts, spin on filter mount, wheel hubs and rims, painting, anodising just to name what I can remember.

Then there's all the other things: All the above things for other bikes, plus mini bikes, go carts, chop saws, bench grinders, power files, book cases, blanket boxes, wood bowls, land sailers, recumbent bikes and trikes, crossbows, rifle slingshots, knives, sails and centre boards for canoes, drill sharpeners, ball turners, scissor knurlers.

Geez, no wonder I'm buggered! But still I'm not finished, far from happy and far from finished. I need more things to make but I'm running out of ideas.
 
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