Hello Costas  The DOM tube stands for "Drawn Over Mandrel" tube.  It is a type of steel tube that is made with close size. Most of the time is +.010-015 in...
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cvlac
Dec 5, 2008 7:26 pm
Hi What is DOM tubeing ? ... the DOM tube. ... could tap ahd fasten ... spindle bushings? ... spindle bushings? ... to the ID. ... spindle bushings?...
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keith gutshall
drpshops
Dec 5, 2008 6:02 pm
Hello Bret  DOM tubeing works good for shaft and stuff.   The hard part is how to fasten some kind of work holding device on the DOM tube.  You might be...
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keith gutshall
drpshops
Dec 5, 2008 4:24 pm
Hello Costas  I hope metal come down in price .  I need some good size pieces for the machine have construction.   Keith  Deep Run Portage Back...
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cvlac
Dec 5, 2008 11:46 am
Hi Small shops must first end their stock to buy new materials. So this can take more time to see any price difference .Yesterday I have buy a piece of...
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hepps_29646
Dec 5, 2008 8:06 am
That's what I was afraid of. I think I'll wait a while longer. Harold...
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cassidymeyer
Dec 5, 2008 5:34 am
Mine said that the decrease will only be passed onto customers sometime next year....
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keith gutshall
drpshops
Dec 5, 2008 4:50 am
Hello Bret  DOM Tube will work fine for a spindle. I have a spindle on the shop floor for a machine I am building made from DOM tube.   Most of the tube...
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Bret Schlueter
bretshooter
Dec 5, 2008 4:35 am
How about 3" DOM tubing. Tubing is measured by OD, right? Bret ________________________________ From: keith gutshall <drpshops@...> To:...
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keith gutshall
drpshops
Dec 5, 2008 4:13 am
 Hello Lance  It is a good idea ,but a 3in pipe has an OD of 3.5 in.  Pipe is maked for the ID, don't forget to add the wall thickness to the ID.  ...
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Lance
crashbone123
Dec 5, 2008 2:01 am
Pat, rather than the piston, why not use the connecting rod? It has the crank bearing already formed and IIRC the old V8's had about a 3" crank journal. lance ...
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hepps_29646
Dec 5, 2008 1:50 am
Does anyone know whether the price decrease has started showing up at the metal suppliers? I've been putting off buying some steel for some time. Harold...
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hepps_29646
Dec 5, 2008 1:47 am
Will, You're right. I really want a Listeroid but they are out of my reach for the time being. Harold...
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Brian R. Wood
brianrobert....
Dec 4, 2008 11:34 pm
Well, so far I have found that racing engines use silicon-aluminum alloy, such as 4032 or MS75. Also 2618, which has Copper 1.9 - 2.7 Iron 0.9 - 1.3 ...
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Brian R. Wood
brianrobert....
Dec 4, 2008 11:01 pm
I don't think so. Pistons have to be wear resistant, and pure aluminum isn't. I think there is a lot of copper in them, at least when I took some to melt down...
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cvlac
Dec 4, 2008 10:12 pm
Hi I think that pistons are made from pure aluminum ,no zinc inside. I don't think that this metal can be used as spindle bushing material.It is very ductile...
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jimyjak1
Dec 4, 2008 10:03 pm
Pat The pipe would need a good finish and oil lines or the AL would not hold. Then at high speeds it still may want to gall under heavy load. The zinc is a...
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Pat Delany
rigmatch
Dec 4, 2008 9:05 pm
Just wanted to know if piston alloy would work as well as zinc/aluminum alloy as spindle bushing material. It would be a lot easier to explain things to people...
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drpshops
Dec 4, 2008 5:04 pm
... Hello Pat What have you got in mind? A little more information would be helpful. I am not sure how you going to assemble the parts? Keith...
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Pat Delany
rigmatch
Dec 4, 2008 1:16 am
Maybe fed with 2 oil lines through the side of the block and an oil can 2 feet over the spindle level. I wonder just how fast a 3.5" spindle could be made to...
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two-jays
twojays44
Dec 3, 2008 6:01 pm
Betcha a huge :) that it will be a long time before it translates into me paying less for aluminum, my predominant material use. Thankful I am for my furnace &...
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Pat Delany
rigmatch
Dec 3, 2008 4:54 pm
At least steel will be cheaper! Pat From telegraph.co.uk Metal prices fall further than during Great Depression The price of key industrial metals has fallen...
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William Dysinger
tinkerrbill
Dec 3, 2008 8:03 am
A good replacement for that old hit/miss engine would be a Lister diesel! Will, the Tink N45°29'05, W122°19.20 ... A good replacement for that old hit/miss...
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William Dysinger
tinkerrbill
Dec 2, 2008 8:38 am
A good heavy flywheel would take care of those pulses and maybe some of the vibration. Balancing would help the vibs also. Will, the Tink N45°29'05,...
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HB
scfpigs
Dec 2, 2008 8:17 am
Talking about bringing up old technology again in modern machining applications we can build a wooden geared shaft and wheel system to be turned by horses or...
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anthrhodes@...
anthrhodes
Dec 2, 2008 6:44 am
Keith, Place the gas engine outside driving a line shaft with long belts down to the individual machines. Everything old is new again. LOL Anthony Berkeley,...
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kwolson2002
Dec 2, 2008 1:39 am
David et al. - Have a look at Banki turbines. They are made of circular-section blades (e.g. sections of cut pipe or tubing), fixed to end plates. They have...
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DennisF MacIntyre
a1g2r3i
Dec 1, 2008 6:39 pm
Dear K. P. Fisher & The Multimachine group      Have you ever considered an air-over hydraulic powered shaper using an air over hydraulic unit as I ...
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hepps_29646
Dec 1, 2008 3:20 pm
Sophie, Thanks. I was kind of hoping there was a big hit and miss engine outside the shop. I once worked in a dry cleaner that still had a line shaft on the...
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sophie_t
sophieteecher
Dec 1, 2008 8:03 am
... lol, well I'm not that old. the steam engine room was still there. However the company had recently commissioned its own high pressure boiler house and...
