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    WOB replied to the thread 2 cycle rotary valve engine.
    It is easy to limit RPM. Just throttle the engine with an undersized carb. It will also aid starting. WOB
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    WOB replied to the thread 2 cycle rotary valve engine.
    IMHO, your valve timing is conservative and won't develop max power. This site Model Engine Tests has a multitude of engine tests...
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    This is incorrect. Gunsmiths use Cerrosafe for chamber casting. It is not the same material as Cerrobend. Cerrosafe is not suitable...
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    WOB replied to the thread Model Aircraft Engine Refurb.
    This article might help; AdriansModelAeroEngines.com :: Restoration of model engines WOB
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    Pistons and other model engine supplies : OTTO GAS ENGINE WORKS List of some suppliers: Scale Model Engine Suppliers List WOB
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    WOB replied to the thread Suppliers in US.
    Small screws and such can be found here: Micro Fasteners WOB
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    WOB replied to the thread Valve problem.
    Pumice is finely ground volcanic glass and is too soft for use on steel. It is used in some toothpastes. All the valve grinding...
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    WOB replied to the thread Fitting Oilite Bearings.
    A simple way to effectively reoil a bearing is to drop it in a canning jar and cover it with 30W oil. Put a hose barb in the lid and...
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    I have had a Neycraft Fiber Furnace (Neycraft Fiber Furnace - American Jewelry Supply) for many years. It has performed well for my...
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    WOB replied to the thread To ring or not to ring.
    This is the correct process to fit a cast iron piston to a steel cylinder: AdriansModelAeroEngines.com :: Piston/cylinder finishing It...
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    WOB replied to the thread 4 stroke spring selection.
    The book "Aircraft Engine Design" by Joseph Liston (1942) has an entire chapter on valve gear. In it, there is a rigorous...
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    WOB replied to the thread Radial engine plans/kits.
    If you can find a copy of Harry Higley's book "All About Engines" , it contains a good explanation of the differences between gasoline...
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    WOB replied to the thread Hodgson Radial - won't run.
    Two things. When I built my Hodgson 9 Hall effect distributor(S/S CDI, 1/4-32 Rimfire plugs) I used nylon screws to hold the rotor...
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    WOB replied to the thread Hodgson Radial - won't run.
    Check your distributor and plug wires. You might be getting crossfiring inside the cap. The wires should not run bunched in parallel...
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    WOB replied to the thread wrist pin design.
    To me it means same size hole in piston and rod(about .001" bigger than pin) WOB
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