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Thread: The Bucket Foundry

  1. #1846
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    26th June 2005 - 21:11
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    Now I wish you had the video running for that run, Neil!

    Do you have any way of throttling the motor? Or once it starts it all on it own?


  2. #1847
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    10th February 2005 - 20:25
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    Quote Originally Posted by Flettner View Post
    No, well designed gears are rolling contact, heavy load still rolling contact unless the tooth deforms. So it just means that the gear needs to be robust enough not to deform a significant amount.
    Well, we live and learn! - please ignore my above statement!
    I know that helical gears have sliding forces but thought that similar things would happen with straight cut gears (to a lesser degree)!

  3. #1848
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    Quote Originally Posted by Flettner View Post
    How do you stop a runaway compression ignition engine? stop the fuel, no, the crank case is full of fuel oil! Shut off the air? No the exhaust without a pipe on can suck air back in but it will slow the run away. In answer to you question Frits yes it DOES rev and it was only on twostroke OIL.
    Thankfully it run out of oil before it exploded.
    Shutoff valve on exhaust and flood it with CO2??

  4. #1849
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    12th March 2010 - 16:56
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    Quote Originally Posted by WilDun View Post
    Shutoff valve on exhaust and flood it with CO2??
    Yes, some more thought will need to be applied, perhaps it will need some throttling as well as fuel. It will need an exhaust
    Poor little AG100.
    Is it a 100cc or do we need to add the small piston displacement as well? Being that the small piston is at it's TDC when the big piston is at it's BDC I think we can ignor the little piston's displacement. Correct? Or is this a rule bender?

  5. #1850
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    20th January 2010 - 14:41
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    Quote Originally Posted by Grumph View Post
    One of the two brothers involved with this is Kevin Giles of KG Motorcycles in ChCh. He has a running Duzgo and most of the promo literature. Absolutely butt ugly things they are...
    As for the 13 gears, can I suggest that as Whataroa was a sawmill town deep in feral Westland, they may well have run out of fingers and toes to count the gears on....
    Its still a town, only the mill has gone. It has a shop, a garage, a pub,a school, plus a 9 hole golf course. Plus once a year a few White herrons
    You say ugly, I say quirky..........Far better looking than a Treka or a CF bedford.
    Rodney Giles last I heard was on a lemon farm in Akaroa, he has restored (well basically remade) quite a few.
    Rodney could fix or make just about anything much like an old school blacksmith.One of his Alan cousins was the forman at the local foundry now he has the landmower shop in town. he actually won a national kart title about
    two years ago he would have to be well into his late fifties.
    Quote Originally Posted by F5 Dave View Post
    And neutral isn't really a gear.
    Quote Originally Posted by Frits Overmars View Post
    4 x 3 (like in the first Kreidler GP racers) = 12
    6 x 2 (like in the later Kreidler GP racers) = 12
    How on earth can anyone arrive at 13?
    One gearbox is three speed the other one is 4 speed = 12 forward gears as you would expect plus a super low crawler by putting both in reverse. Thus 13 forward gears.
    In practice you drive it like a Road ranger gearbox. only it has two levers rather than a button.


    Quote Originally Posted by gsxr View Post
    it had two gearboxes mounted back to back for 13 forward gears with a supper super low of putting both into reverse, they had a 16
    Off topic on topic
    Many years ago i had a beach buggy on aircraft tyres 1938 V8 side valve motor.
    2 humber gearboxes reversed with a push button overdrive between them.
    Gave an effective 20 forward and 5 reverse if requirded
    Correct you can have a virtual chocolate fish.
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  6. #1851
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    22nd November 2013 - 16:32
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    Runaway engines, farm vehicles of sorts, 2 foundry pages per day, etc..... it's all go in kiwiland.
    In Oz west coast, there are things happening also, albeit a pace that is far less than 10% of Fletto though.
    After lots of measurements, layout drawings and head scratching I decided that I had to rebore the water jacket a bit more. Done. Now back to the cylinder to do the boring and the outside diameter & O ring grooves to suit the water jacket , then off to the plater. After that the crankcase.
    Click image for larger version. 

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    While I'm here, we're helping a dude over here with an inertia dyno. For the flywheel overrunning issue, we are going to use a relatively available sprag clutch 40*80*22 BB-40-K, Keyed on ID and OD, tons of torque capacity and was around A$110

    Click image for larger version. 

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  7. #1852
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    23rd May 2015 - 17:27
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    [QUOTE=Flettner;1130937595]No, some rockers were under the under the cam (in the case) with thin rods connected to more rockers pulling down on the valves, odd ball, not like our sane stuff here.

    Do you have any illustrations of the rockers, I need to find a way of operating the valves in the same direction as the pushrod moves, and are not happy with any of the ideas I have come up with so far.

  8. #1853
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    12th March 2010 - 16:56
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    [QUOTE=MikeT1;1130937927]
    Quote Originally Posted by Flettner View Post
    No, some rockers were under the under the cam (in the case) with thin rods connected to more rockers pulling down on the valves, odd ball, not like our sane stuff here.

    Do you have any illustrations of the rockers, I need to find a way of operating the valves in the same direction as the pushrod moves, and are not happy with any of the ideas I have come up with so far.
    Post 1826, exploded diagram of the Ducati engine. Page 122

    Single lobe, one rocker on top, one rocker underneath.

  9. #1854
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    13th June 2010 - 17:47
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    [QUOTE=MikeT1;1130937927]
    Quote Originally Posted by Flettner View Post
    No, some rockers were under the under the cam (in the case) with thin rods connected to more rockers pulling down on the valves, odd ball, not like our sane stuff here.

    Do you have any illustrations of the rockers, I need to find a way of operating the valves in the same direction as the pushrod moves, and are not happy with any of the ideas I have come up with so far.
    There was a desmo conversion for the pushrod 500 Velocette which used the pushrods to pull as well as push. Worth looking at for a steam valving setup.
    I don't have anything on it on line but it was well publicised so should be worth a google.

    Husa - just heard today that KG has sold everything up. Apparently all the s### will appear in parcels on trademe in due course of time. There's ChCh's last wrecker in premises gone. 2 or 3 working from home on line now only.

  10. #1855
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    12th March 2010 - 16:56
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    Quote Originally Posted by Grumph View Post
    What sort of temps are you expecting? I've used a Moly loaded nylon base bush for several applications. NZ made - Husa can probably find it.
    From memory, permanent deflection around 250C and around 100kg if it's well supported. Got some here but can't find what data I had.
    What material would you run against it? I imagine It would need to be hard. Is it abrasive to anodised surfaces

  11. #1856
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    Quote Originally Posted by WilDun View Post
    I think from memory that Yow Ling's engine is the same as the one I have - it's the Italian designed two stroke Mini Motor (Mini Motore) but made under licence in England by Trojan and fits on the back of a bike. - capable of about 25 - 30 kph.
    I'm told it was a competitor to the four stroke Ducati Cucciolo.

    BTW All this stuff is just a fill in during a lull in Flettner's stuff - we haven't got entirely off track!
    Yes same thing, Trojan Mini Motor, but for ease of use my Batavus GoGo is way better
    My neighbours diary says I have boundary issues

  12. #1857
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    Quote Originally Posted by Flettner View Post
    if the rod is made from 7075 alloy what coating will be suitable to slide in the under piston bushing? Perhaps hard anodise against a carbon lined bushing? Minimal friction, hard chrome would be good but we can't do that in NZ (hard chrome on to alloy). Perhaps nikasil?
    I cannot imagine that no-one in the whole of NZ does hard chrome; it should be easier than nikasil. I'm not the specialist in this field, but I remember that the prototypes of our MB40 model engines, with sleeveless alloy cylinders, were hard chromed in a couple of aquariums in the basement of one of the builders (to be fair I must add that when he was not occupied with those engines, he was a chemist professor).

    Quote Originally Posted by Flettner View Post
    Poor little AG100. Is it a 100cc or do we need to add the small piston displacement as well? Being that the small piston is at it's TDC when the big piston is at it's BDC I think we can ignore the little piston's displacement. Correct? Or is this a rule bender?
    I think it's correct. In my book cylinder capacity is maximum volume minus minimum volume. That leaves the question: is maximum volume reached at BDC?
    In your present setup it will be, but if you re-phase the crankshafts, it has to be re-established.
    If I can find the time I'll cock up some program that will add the volume displaced by the big piston and the volume displaced by the small piston per crank degree, and that will have an option for adapting the bore, stroke, gearing and phasing of both crankshafts.

  13. #1858
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    Quote Originally Posted by Yow Ling View Post
    Yes same thing, Trojan Mini Motor, but for ease of use my Batavus GoGo is way better
    Got any pics? (of both).
    My mini motor is a motor only and could have actually been used in some other setup, but I did have one long ago (my first "motorcycle") - I bought the present one with a Villiers 8e engine and found it in a pile of other "junk" which came with it.

  14. #1859
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    Quote Originally Posted by Flettner View Post
    What material would you run against it? I imagine It would need to be hard. Is it abrasive to anodised surfaces
    If it was copper plated first, then it might take the hard chrome, but then you could try a hard chromed brass bushing, Model aircraft cylinders used to be made with hard chromed brass liners.
    How about just a bronze bush with labryrinth sealing? - after all there won't be much side force to worry about.

  15. #1860
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    Quote Originally Posted by Flettner View Post
    No, well designed gears are rolling contact, heavy load still rolling contact unless the tooth deforms.
    Been checking out the interaction between involute gears and I can now see what you mean about rolling contact - I do see that I can still learn something even if my brain is shrinking - whether I'll remember that tomorrow, I dunno!

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