Something new and kinda sorta 100 years old looking

Discussion in 'Motorized Cruiser Bicycles' started by fishguts, Sep 13, 2010.

  1. fishguts

    fishguts New Member

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    That would do it, wouldn't it? So, a bung TIG'd on the top for a fill plug and a bung TIG'd on the bottom for a petcock.


    Now ... There isn't any reed valve in this case. I assume one is required to prevent blow-back though the carb on the piston's down stroke? I don't have a carb ... so is there usually a reed valve in a plate between the carb and intake on these motors perhaps? 2-strokes are new to me.
     
  2. curtisfox

    curtisfox Well-Known Member

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    How would a weedeater,chainsaw carb work with the ajustable jets and paules pump?
     
  3. fishguts

    fishguts New Member

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    hmmm ... maybe maybe. I do have a chainsaw carb handy. Thanks for the suggestion. It's worth a try. I'll be having bungs welded into the case either way. I can use them to check if oil is getting distributed and to drain any errant water. If the case looks too dry after running it a while I can always dump oil in the case through the top bung.
     
  4. wdbtchr

    wdbtchr Member

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    Aaaah, you too had a Mack V8 with a leaking sleeve. ; )
     
  5. fishguts

    fishguts New Member

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    Thanks for the encouragement, guys. It helps as I weed my way through this labyrinth. This being a "flash" boiler means a number of controls that conventional boilers don't require. But I'm figuring it out.

    Here's the new and improved boiler coil. I upped the size from 1/4" OD tubing to 3/8" OD. I did this because it works better with my 1/4" fittings and the engine is bigger than anticipated. This reduced the length of tubing from 50' to 35'. It's a lot more difficult to make a coil that fits inside a 6" pipe when the tubing is 3/8". Still, I tried to create something of a beehive effect for the lower half and a concentric circle effect for the top half. I've decided to put a 3" piece of pellet stove pipe up the center of the coil to force the heat from the propane burner to flow over the coils and not exhaust up the middle. At mid-point in the coil is a high pressure, high temperature compression T-fitting (not easy to find). A sensor will be fitted into the T on the outside of the boiler to detect water level in the coil. This will run through a little circuitry because there needs to be a delay in the switch so the water pump isn't surging every time the water in the T bubbles up and down.

    [​IMG]
     
  6. eastcoastbikeman

    eastcoastbikeman New Member

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    Fishguts, I am in MA also and have several hundred pairs of tires in stock including solid white, solid red, whitewall etc. In fact a whole warehouse full of vintage and repro parts. Also run 4 giant bike shows a year. Next one is Feb 13th OldRoads.com - Dudley Swap Meet
     
  7. fishguts

    fishguts New Member

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    Cool, man. I should have it finished up by February ... I hope. Unfortunately, I won't be able to come. I'll be in church Sunday morning, so the earliest I could be there would be one hour before the show closes.

    Yes, I could take a day off, but I'm saving that day for a New England steampunk show where I think my bike will fit right in. Hope to sell it there.
     
    #147 fishguts, Dec 9, 2010
    Last edited: Dec 9, 2010
  8. eastcoastbikeman

    eastcoastbikeman New Member

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    All my shows are on Sundays unfortunately. I used to have them on Saturday but a lot of bikeshops couldnt make it that day
     

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  9. corgi1

    corgi1 New Member

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    is the little yellow tank one ,last pic, a wizzer or just a wizzer motor?
     
  10. eastcoastbikeman

    eastcoastbikeman New Member

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    It was at my last show. Not sure. I can ask mad matt the guy who owns it.
     
  11. eastcoastbikeman

    eastcoastbikeman New Member

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    Actually my shows are on the CT line in Central MA. OldRoads.com - Dudley Swap Meet
    My friend puts on the Larz show in Boston and I was going to be involved in that one too but it conflicts with my weekly Fleamarket that I run every SAT-SUN 8-4 Dudley Do Right Flea Market

    Try to make one of my shows if you can Next one is Feb 13th 7 am -2:30

    Thanks Mike.wee.
     

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  12. fishguts

    fishguts New Member

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    Just so ya know - I'm waiting for some plumbing bits to come in to take this thing to the next stage. Also, seriously threw my back out of whack this week and I'm on the mend, so things is a bit slow around here ...:-||
     
  13. mr.charlie

    mr.charlie New Member

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    man! thats i nice selection of "tank bikes".....im droolin!....and a nice venue to show 'em...excellant
     
  14. eastcoastbikeman

    eastcoastbikeman New Member

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    These would be nice to motorize but how would you mount the motor to fiberglass?
     

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  15. curtisfox

    curtisfox Well-Known Member

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    I think only repos would be fiberglass If you could aford a oridgonal it would be metal?

    it would make a awesome bike
     
    #155 curtisfox, Dec 13, 2010
    Last edited: Dec 13, 2010
  16. fishguts

    fishguts New Member

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    OK, I'm de-hijacking my thread back!

    Back to STEAM!

    One of the pieces I've been waiting for arrived today. It's a very unique pump that should work well with this setup. It took a lot of searching to find it. It is a 150 psi 12 volt pump with the right size fittings and only draws 10 amps. It is designed for methanol injection systems for drag racing. The water pump in the steam power system I'm designing has to overcome the 100 psi operating pressure, hide in a reasonably sized box on the bike along with a motorcycle battery, a propane tank and the bike's other electronic controls. It can't hog a bunch of amps because there won't be a generator. That means I'm going to buy a pretty hefty motorcycle battery. The deal is, no one is going to be riding this bike long distances - not enough water capacity or propane for that anyway. It will be a big toy for somebody to have fun with at bike or steam/steampunk shows or in the neighborhood.

    [​IMG]
     
    #156 fishguts, Dec 13, 2010
    Last edited: Dec 13, 2010
  17. curtisfox

    curtisfox Well-Known Member

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    How about one of the small deepcycle they use for depth finders and fishing gear. They are about the size of a garden tractor battery......Curt
     
  18. fishguts

    fishguts New Member

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    That might do it. I also have the option of mounting propane bottles behind the seat, so I can be somewhat flexible with what goes in the box.
     
  19. eastcoastbikeman

    eastcoastbikeman New Member

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    here is the one I want to motorize
     

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  20. fishguts

    fishguts New Member

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    Some doo-dads started arriving. I tapped the head for 1/4" NPT, put in a nipple and check valve (running the reverse direction). The check valve was supposed to be a high pressure, high temp valve but the stop "ball" was plastic. Huh?? Well maybe a hi-temp plastic? But I don't think it will work because the actuator rod (top of a Briggs tappet stem) will be rapidly banging against it (tappet rides on top of the piston). Soo ... went to hardware store and got a steel ball bearing, disassembled the check valve and threw out the plastic thing that was actually a half ball that slides on a brass rod, drilled out the rod and removed it, dropped in the ball bearing and it sits nicely in the check valve bevel seat. The way it works is, the piston comes up with the tappet sitting on top. The tappet stem pushes up on the check valve ball and lets steam in which forces the piston and tappet down and the ball is closed by steam pressure behind it. There's supposed to be enough lag in the steam charge when the tappet pushes up on the ball to allow the piston to lead the incoming charge enough to throw the crank in the appropriate direction. Actually, this rig should run equally well in reverse. So this is how the steam inlet valve is shaping up:

    [​IMG]
     
    #160 fishguts, Dec 16, 2010
    Last edited: Dec 16, 2010

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