Search results

On a safety note, this guy used to hold the mold steady with his right foot, looking at his bandage, one can only guess what happened. if you getting into casting please do so in a safe manner. has the price of steam engine castings gone up with COVID

I have been given (2) 12A366 ignition coils to rub my Farm Boy hit & miss engine. These coils are exactly like the one shown in the link below. Is the polarity of the coil critical and if so, how do I tell which terminal is positive. It's about -8 Celcius here in southern Ontario with an...

Buy Dormer drill bits, excellent cutting tools and huge variety.

Well thanks to the input received here, I managed to get a 10 minute run tonight. Changes made were an increase in the level of fuel in the tank and remove the tank lid as it fitted very tightly and may have been causing a slight vacuum in the tank. To keep it running, I had to keep my thumb...

Short video now attached.

My recently completed farm Boy hit and miss engine stubbornly refuses to run longer than about 45 seconds, starting is achieved by placing my thumb over the air intake and varying the amount of air that I allow past. When the engine is started RPM increases for about 20 seconds then diminishes...

Exactly what I was hoping for, thanks Mnay. Colin

As I am nearing completion of a "Farm Boy" hit and miss engine, I find myself looking at mufflers the most popular one and certainly the most appealing to me is made using what looks like two small shallow dishes bolted rim to rim. Does anyone have any information on these mufflers as I have...

With nearing completion of a Farm Boy Hit & Miss engine I will soon need a cylinder head gasket, what material and method of construction do you find work best for this gasket? Thanks in advance, Colin

Great looking and running engine Simon, I currently have a Farm Boy in the works which is about 90% complete, only hope it runs as well as yours.... someday. I guess too much to hope you are in southern Ontario where i might get a chance to see it live. Colin

Don't hesitate to use a link belt, they are common place these days on large industrial equipment and sheaves last years under constant heavy load. With the light loads and intermittent use in hobby equipment you will never have to touch them again. I built a series of machines for the heavy...

Another method of stretching press tie rods was using a hydraulic nut. The hydraulic nut stretched the tie rod then the regular nut was spun down. Takes one whole load of pressure to stretch a 4" diameter tie rod 1/8"!!!

When large power presses are assembled, the tie rods (they hold everything together in layers) are shrunk to give the appropriate tension. These tie rods typically have 1" holes bored 4 feet deep in the upper end. The press is then assembled and the lower nuts are hand tightened against the...

Is there any way of preventing the back carbon coating ones gets on steel (01) when heat treating it? pretty sure I saw something about a coating you could apply but cannot find anything about it or if it even exists. McMaster Carr has a product but it appears to be more for case hardening...

If you don't have a Zeus book in your pocket you are missing something!!! You will find everything you need on limits and fits all one one page plus all kinds of useful information for the machinist. As you will see from the image, I have had this one a little while paying a whopping one...

Based upon your comments about needing high current, my thoughts behind the SSR were to use it to amplify the current sufficiently to fire the coil properly. Does this make sense? Regards Colin

Baron J, Looking seriously at using the prox in conjunction with a solid state relay. Can you give me any more insight into how to select and wire in the catch diode? Colin

The style I have has the indicator light and requires 12-24 VDC to operate, my concern is if there will be enough potential to fire the coil. Colin

I am considering using a small inductive proximity switch on the Farm Boy engine I am currently building. If I were to do this, would I need any additional amplification to drive an ignition coil? Thanks in advance. Colin

Many thanks to all the amazing input, I now know that propane is hot enough to silver solder with and the torch output has to be proportional to the mass of the part to be soldered. I believe I have a Sievert torch lurking somewhere in my garage as I used one to shrink wrap my boat a few years...