Here is a list of all the postings Journeyman has made in our forums. Click on a thread name to jump to the thread.
|Thread: small cast iron flywheel|
Have a look at RC Machines they may have the very "Flying Wheel" that you need.
|Thread: Hello from London|
Hi Ian, welcome aboard. You could try Ickenham & District Society of Model Engineers a friendly bunch have a nice workshop. Harlington Locomotive Society have a good raised 5" & 3.5" track. But both might be slightly too West depending on your bit of North London!
|Thread: Myford Super 7|
I'm with Dave (S.O.D.). There are an awful lot of lathes in the world and most of them aren't Myfords!
If you want new then probably Chinese. If you want 2nd hand then a good Boxford or Colchester is hard to beat. If it really must be a Myford then be careful in your choice there are many vastly overpriced examples out there.
|Thread: Wobbler Pivot|
Yes a spot of confusion between one of these, a wobbler or oscillating steam engine:-
and one of these, a wiggler or wobbler or centre/edge finder:-
Build article for steam engine *** HERE ***
Edit: Wrong photo
Edited By Journeyman on 26/05/2018 09:47:53
|Thread: sealed glass window failure|
Mick, there was a *** recent thread *** on similar lines has a few links and a video of what you are talking about.
|Thread: Bent leadscrew?|
Could this be caused by the handwheel gear train tightening intermittently onto the rack as the leadscrew drives the carriage along. May be possible to test just by winding the carriage back and forth by hand and noting if there are any stiff spots.
|Thread: X3 mill spindle tightness|
Might be worth checking the spindle for cracks! See this ***THREAD*** Mechman48 has a photo of the problem.
|Thread: Emco V10P carriage stop|
You could try something like this:-
The angle of the 'V' bed on the Emco looks to be at 90deg but one side longer than the other. You may be able to modify my design a bit,. Drawing and build ***HERE***
|Thread: Condensation Management|
A very good & free (GPL licence) all purpose editor is Notepad++ it will deal with most kinds of code from HTML to C. I use it for PHP web page editing. Only for windows though.
|Thread: Drilling small holes|
Too slow! Drill speed should be in the order of 3500 to 4000 rpm. No pressure on the drill just peck very gently. If you have the CNC router I would be inclined to give it a go provided you can set the Z downfeed very fine and peck away at the holes.
|Thread: Plastic Ban|
I read my digital subscription on a tablet which prevents phobic problems
This link to a BBC News item gives some idea where it is all coming from.
Edited By Journeyman on 19/04/2018 20:04:55
|Thread: Mystery tool|
The bit with the red handle is a pretty standard toggle clamp:
Available from Axminster for the princely sum of £6.96. The OP's version is in use on some kind of fixture no idea what that might be for!
|Thread: Off the shelf E.R collet chucks worth it?|
Out of curiosity I just measured the runout on my Warco bought ER25 lathe chuck. As best I can measure it the internal taper is .005mm out front and back. I think that will do me nicely. I machined the backplate to fit on the lathe but used cap screws from the rear rather than have bolt heads on the front. Wrote it up *** HERE *** if anyone is interested.
|Thread: Clarke CL350|
I don't think those shown in the link photo are proper DRO's more of a rotary encoder that counts turns and multiplies by the leadscrew pitch. So only as accurate as the leadscrew and takes no account of backlash! You are possibly better off without them.
Edited By Journeyman on 10/04/2018 15:12:54
|Thread: Ml4 change gears|
Thanks Brian, I think most of my confusion arose from the "Mandrel" gear which I erroniously assumed was the "Spindle" gear not something that was in fact half way down the gear train. It's a long time since I used a Myford. I hope my error has not confused the OP, if so my apologies.
Don't be sorry! I understand now what you have done. Always willing to learn a bit but things take longer to sink in these days Just to put my mind at rest, I did the calculation again using all the gear ratios but using your assumed 25t gear and got the same answer as you. The idler ratios do indeed cancel each other out...
Edited By Journeyman on 08/04/2018 13:21:58
Yes, but the mandrel is 25 so should be 25/65 which still gives and end result of .048076 or 20.8TPI !
My maths / arithmetic is pretty ropey but the OP says the mandrel is 25 tooth so by my reckoning it looks something like this, using all the gears that are in mesh:-
Ratio (Driver/Driven) = 25/20 * 20/26 * 26/45 * 45/30 * 30/65
I rounded the ratios a bit as they work out to about 8 decimal places as is usual with gear calculations. Don't know whether this is particularly useful, is the set of gears shown supposed to provide a specific pitch / tpi?
Of course my calculations may be off or I have misunderstood something (probably both)
Edit: trying to space it out!
Edited By Journeyman on 08/04/2018 12:25:51
|Thread: Wind turbines get bigger and bigger|
Gas Plasma Waste Recycling is the way to go. Solves two problems at once, gets rid of garbage and generates electricity. I don't think they have all the bugs out of the system yet but definitely looks promising.
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