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1. do NOT use aluminum, please don't do that 2. okay to heat red hot, if you are running the engine hard they will get that hot anyway 3. usually there is some flex in the exhaust, it may mate up just fine once you tighten it. 4. remember to allow for expansion and contraction -that's why the...

geez, the rubber chicken comment makes no sense with the blank quote box - score one for the computer - in the blank quote box for what I read, it would have a quote from upthread about a rubber seal

was looking to see if my copy of "the Starrett book" was 1st edition (it might be, it's dated 1915), and I ran across this Starret Book that might be useful to some, and it's on line and free.

I'm sorry, I have a somewhat dry sense of humor, I read: and I would add "of course not, to do that you need a rubber chicken".

TACAN = Tactical Air Navigation (Wikipedia, on Tacan) is really the Mil version of VOR (Very High Frequency Omnidirectional Range) which basically gave you the bearing from where you are to the station, often combined with DME (Distance Measuring Equipment) that would give you the range to the...

there is a very gratifying event, if you are able to produce it, and that is when you are a young hotshot, and a room full of self-important senior engineers is working a problem, and you offer a soluton and their leader says "that is impossible" - I still relish the feel of the room, one hour...

the way to solve your problem is to have two adjacent hall effect sensors. When A trips before B, spark. When B trips before A, no spark. very simple logic - spark when A and NOT B - one 74LS00* will do the trick. * or a 7400 or a 5400 or any equivalent - you can also do that same logic...

you can find the manuals and details on that lathe on the vintage machinery site. Atlas is collectible and so it has more value than an equivalent lathe of a more obscure brand. if you get the details on the lathe you have you will get more money for it. if you want to just get it out of the...

Ray - you are trying to do something pretty different - in my case the circuit charges the capaictor to around 250 V, that's the typical primary circuit voltage on a spark coil ignition like the 356 (or my old doge) has - I tried higher voltages, it actually didn't work as well, no doubt due to...

pretty sure that is not the case, tool maker's buttons have sharp easy to meaure to sides and are often hardened..... keep those ideas coming, they are certainly for something. I wonder if the were a kit to go with a special tool of some kind.. you never know with those Brits, right? (I...

since I can't find the plans, I probably scanned them some time ago, here is the essence as a sketch - the radius is a "nice" match for the dial indicators, the spacing should be symmetrical, 3 or 4 inches to each side of the center - easy to make on a mill and a hand saw - bore the vertical...

as you know, that engine has breaker points (well one point, right) and a lever to adjust timing - a simple thing to do is to hook it up to a ignition coil and cap, spin the prop, move it a bit and repeat until it starts, or at least fires. once it starts and keeps running you can move the...

for what it's worth, there is a schematic and a short article on CD ignitions on my web page - I use one of that design on my 356 (that's a car, not an engine displacement) -I put a lot of miles on the car with that ignition, its very simple and reliable - but it does work with a distributor and...

I agree for sure that part of the pile is setup jacks, but what puzzles me are the nicely finished pieces with the rounded contours and the split nuts. the things that are clearly setup jacks have part numbers like MJ302 ("Machine Jack size 3, 2 inches long", I think the size is the diameter...

I think you will be disappointed. you actually cannot expect good results from what you are trying, even with a brand new $100,000 USD lathe, you can't expect good results. everything in your lathe, including the work piece, is a spring, literally evrything. to get a feel for this, put your...

a lot of thsose motors were used in printers, quadrature optical encoder and a DC motor - you could use them for a 3-D printer, for example, or for a CNC router using a dremel tool - if they are more powerful, you might be able to automate a small mill or lathe - the controllers are not...

I'm happy to ship you some bolts, I have a drawer or two of them - look up shipping at www.usps.com, and if you think it's reasonable mesage me. I may have both hex head, fillister head, allen cap screw and stove bolt types, I don't know until I look and I won't look until you ask.

before doing all sorts of complex stuff, read the runout of the taper itself, put your indicator on the ground part of the taper - if you can see .001, you know that your test bar will only magnify it over the length. what you are measuring is not the accuracy of your lathe, you are measuring...

here are some more scans from the devoe estate, one of the files is too large so it didn't upload

Excellent, Shars is a good quality Chinese brand. What kind of project will you use thos accuracy for?