s2udio said:Maybe buy from somwhere cheaper.? Digikey are a rip of merchant for basic electronic parts.
I think in the past I got 100 T22O insulators and bushes for less than three quid from evil bay.
Buy the screws etc seperately far cheaper
Just market pricing I expect. They obviously aren't pricing for small quantity, attentive buyers.is "incomprehensibly" expensive ?
JohnRoberts said:No serious manufacturer would pay that much for that little... that price screams they do not want to sell them kitted that way, or nobody with a clue is managing prices, which amounts to the same thing.
That would be the ultimate "stump puller" (nickname for big one hole motorcycles), but I don't recall any being two stroke.Gene Pink said:But I gotta say, those 30" dia. air compressor pistons at that warehouse, way up on the top racks, were really cool, not to mention the totebox full of piston rings next to them. Some cylinders were there too. Makes one consider blacksmithing up the ultimate Harley V-twin. It would have to be a two-stoke, as all the had there were 12" reed valves. There were also some roots style blowers there. ;D
Gene
JohnRoberts said:There may be some crazy labor content from collecting the sundry parts to make a kit of parts. On the same page they show the actual thermal pad for like $0.10 so probably labor and overhead...
JR
The flying squirrel sounds nice but my recollection of stump pullers was motors with tons of torque at low RPM ... Maybe those locomotive two strokes made some serious torque, but I recall more like old hogs and other big displacement 4 stroke singles.PRR said:> I don't recall any being two stroke.
Big 2-jug 2-stroke: https://en.wikipedia.org/wiki/Scott_Flying_Squirrel
Many large locomotives used 8-inch bore 2-strokes (but not reed valves).
The highest-power piston engines running are 2-stroke. This one has 960mm jugs, about 38 inches on my ruler. (Stroke is more than twice bore.) Most of these come from work by Sulzer.
Actually my 4.6L is more like 280 cubic inches. 8)PRR said:> tons of torque at low RPM ...
The cargo-ship engine is 5 MILLION pound-feet torque at 102rpm.
Remember that if Gene scored just 14 of those I-R pistons, he'd be part way there.
102 is not a "low" RPM for a 8-foot stroke. About like your 302 V-8 turning 3,400. Well under redline, but as fast as you'd want to spin for 0.2-million-hour life. I'm guessing a prop-ship has no need for low-low-RPM torque. I bet stump-pulling boats (tugs) put more power into churn and prop-loss than in the stump or stuck-ship they work against.
My car has an electric heater for when it's cold in the mornings... And the van i used to move past sunday had one too but you need to short the wires to the battery for them to work. You also need to be careful, they take a special type of fuel from a different pump ;DPRR said:The torched "ball" was probably a "hot tube ignition". Predates spark plugs. Still a thing in model engines (except heated with a battery to start).
I don't know which is the right way on your hemisphere, I like my clock turning the same way the water in the toilet!I had an electric clock. Basic AC motor will turn either way. This had a gizmo, turned backward, finger hit a peg, "bounced", now it was going right. That broke, so we had to finger-bounce it after some power failures. I now have a clock that turns the wrong way, but is numbered the wrong way, so it is all right.
PRR said:Basic AC motor will turn either way.
Laziness is the father of invention.... 8)mike-wsm said:Back when I was am apprentice we had to make a sweep frequency oscillator. Being a lazy beggar I took an existing unit and added a synchronous clock motor with a couple of sprung stops so it self-reversed. Worked perfectly!
Yup the old windshield wiper motors ran off manifold vacuum and when you floored it the manifold vacuum dropped to nil... but why were you flooring the gas pedal in the rain? ;D IIRC some premium cars used a vacuum reservoir tank, to smooth out short term vacuum changes...Unlike those Ford windscreen wipers which slowed to zero when you put your foot on the gas......
That ECU sucks! (sorry, I had to...)JohnRoberts said:...
That same changing manifold vacuum was used to advance ignition timing under heavy throttle since the denser fuel mixture will burn faster.
JR
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