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I think the main problem with full size versions of this type of valve is to do with unequal temperatures and expansion of valve and head causing sealing issues. With model engines ie the Condor, running on Methanol and castor oil, ( total loss oil, mixed with fuel), this is less of an issue...

Hi, Google “ Condor 120 model engine “. I had one in the early eighties, this engine was made by Dennis Allen of A. M. and Merco fame. It has a belt driven overhead rotary drum type valve incorporating both inlet and exhaust ports. The inlet entering from the side and the exhaust “ exhausting “...

‘Sweep’s fleece?

Would ‘lard oil’ be used for skin cream? I think ‘e45’ is lanolin and paraffin based.Doug.

A few years ago, before I retired, I had to repair a stripped thread in a mild steel bracket. Drilling out to the next size up, M10 x M12, the tap felt as though it would break, drilling to maximum tapping size, new tap, threading compound, oil, nothing made any difference. My friend, a...

Hi In the eighties I had a “Condor” 120 glow plug model rc engine, this had a peristaltic pump driven by a roller attached to the camshaft gear (ohc). This worked very well. Be aware though, silicone tubing does not like petrol / gasoline. Methanol is ok. Google “Condor 120” you should then see...

How about something like a bathroom type extractor fan exhausting outside? Usually very quiet, reasonable priced and should be ok for removing just fumes. Doug.

Hi, I had the same problem a few years ago, a friend gave me a tub of his late mothers skin cream, E45 or something. I had tried everything, a larger drill, all types of tapping/cutting compounds, WD40, new taps, nothing worked. After dipping the tap in the cream the thread was cut with...

hi gents My first time posting anything on here, just joined, Question, does this engine have a full size spark plug or a "model size" one? the ignition coil, is it a "full" 12volt unit or one which needs a ballast resistor? My reasons for asking are, a miniature type spark plug can be...