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Hi all in looking back at some of my Rc aircraft I came across the super tiger in-line twin glow fuel engine . This was a much Mal alighned engine few ran up to potential. I had a drawing of the construction but that’s long gone . As I recall it had a knuckle type of joined crankshaft This...

Hi all . I’m back to working on my two cyl double acting mill steamer from chilertern stem in UK this is a piston valve engine valve controlled by eccentric on crankshaft. There is no access to the ports in the steam chest without disassembling the entire thing . I am running on compressed...

I know this is for home machinist and tool makers so I thought I’d describe what ice seen in the med field as most mechanical things have men made by mechanical engineers and ultimately in the shop. So I get bad news bone cancer myeloma First sit the test a bone biopsy this is drilling a...

Question about ts drill sizes I know you can look any thing up on the internet , but suppose you come to a tap you just don’t have the real size you need. Small metric come to mind. As a start can you just measure the flite thickness on day a two flute tap and drill close to that size then if...

I have a question about burnishing . 4130seamless steel tubing is pretty smooth bot in smaller sizes, say less than 1/2” bore or inside diameter. If this is to be finished by burnishing. About how much would the bore be increased? We can get into honing later

Any one using the model steam turbines off Amazon? I have two of them just getting ready for operation I’m going to order the PMResearch model dynamo shortly I already have two small generators. I have a series of tooth belt reductions I can use . These little thing can turn 50-100 k rpm. They...

Is it possible to install a3mm heli coil in a 4 mm threaded hole . Will the new 3 mm screw hold reasonably well? The hard part I see is that the 4mm threads will not be completely drilled or so the heli Coil insert may be hard to insert . This is through hole-I could possibly drill one side...

I have a mini no name drill press I my hobby room. The quill assembly is so loose it’s not even a joke it’s hard to just pick up a deep center punche mak. Looking in McMaster Carr I see 1/4 20 ball ended set screws. So it might be possible to install three at full up position the three more at...

Being a long time auto racer the first thing that usually comes up is how much power does the engine make. So we are talking steamers down a ways. How much torque and rpm do thes little engines make ? there have been a number of home small engine synod built over the years . So what’s...

I’m about to jump in with a big step into model steam engines. the lubrication issue comes up very quickly snd has many opinions. the engine I’m going to get has sliding piston valves rotating shaft bearings Initially I’ll be using compressed air for power as I haven’t found a suitable boiler...

Does anyone remember in the 50’so or so a model steam engine and boiler mounted on a wood board probable from Sears Roebuck or Montgomery wards.? I had one I got for Christmas years ago it was my favorite toy for years then it disappeared in a move I’ve searched collectors snd visited many...

We were sitting back in the rc model aircraft part of the shop and carbon fiber constructions came up. I’m a big fan of composites in rc plane construction eve4 since I was introduced to it years ago. so while boring a small hole in some 4130 steel I ran into chatter with my small tool. I just...

I was talking to a couple of my old racing friends and the twin engine dragsters came up. I then thought it would be a cool project for an enterprising model engine maker to add to the collection. Since that was during my growing and racing days and I knew many of the twin guys we often talked...

Hi I’m about to start on an 18 cylinder ageless radial. I have a full cad system available, just walk in the door and have at it. I friend closed off his cad from the shop. So looking at various models few have anything like a supercharger. I had a set of drawings years ago lost in a tornado...