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| Jan Ridders Otto 4 stroke build |
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| Rob.Wilson:
Hi Doug Just read the thread from the start :bugeye: ,,,, great stuff :bow: :bow: :bow: :bow: :bow: ,, the engine runs well on gas :med: Rob |
| dbvandy:
--- Quote from: Rob.Wilson on March 06, 2011, 03:13:37 AM ---Hi Doug Just read the thread from the start :bugeye: ,,,, great stuff :bow: :bow: :bow: :bow: :bow: ,, the engine runs well on gas :med: Rob --- End quote --- Thanks, Rob... now comes the fun part where I get to play with it until it is exactly the way I want it. I will start work on my glass vapor tank on Monday, should work pretty good now that I understand the physics behind it... AND... I am starting to dream up my own design now... a V4, all open... I like to see the parts spinning around. Doug |
| dbvandy:
Well, I was able to spend a little time on the Otto this afternoon and nailed down the vapor tank. It works excellent and looks good to boot! I roughed out the sides and then turned the top portion on the lathe. It serves no real purpose to be round, I just thought it would look better. The insets were milled with my new rotary table. There is an o-ring that goes between the sides and the 1.75 od glass. The throttle/air mixture is controlled with a socket head that screws down and covers the air bypass hole. The other side is the filler. The Vapor tank finished. The glass was a bud vase and has a blue tint. The engine running with the new tank and magnets set into the flywheel for balance. The motor now has full control of the idle with the mixture and it will rev from 800 RPM to 3500 pretty quickly. You can control the Revs with your finger covering the air bypass hole. With it open, it is too lean so it slows to an idle. With your finger over it, the mixture enriches and she speeds up. Now to make a permanent mount of the coil and then pull it all apart and polish it all pretty. More to come... Doug |
| NickG:
Really nice Doug, a pretty tank / carb. That vapour carb is a cracking innovation by Jan considering so many people struggle with carburettors he has thought of an easy way to get around the problem that appears reliable. Nick |
| lordedmond:
the springs look like the are not square at the bottom end , just clipped off , that may be the cause of the deformation BTW very good build post, well documented , its something I do not seem to be able to do , I build OK ( with plenty of tip from this site ) but I am poor at documenting it ( dyslexia does not help ) takes me 15 min to type this line |
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