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Member postings for Chris Evans 6

Here is a list of all the postings Chris Evans 6 has made in our forums. Click on a thread name to jump to the thread.

Thread: Valuation of Boxford model A lathe and EMCO FB2 vertical milling machine
02/12/2015 15:59:46

Nice lathe a copy of the South Bend I had for 45 years. As for value a local dealer has had one in his showroom for a year or two with a £1100 price tag. I sold my well worn South Bend for £200 a few years ago. The Boxford will be snapped up soon due to its size to fit in a home workshop, any tooling with it ? No idea on the mill, Iv'e never seen one.

Thread: metric 123 blocks??
02/12/2015 15:52:59

I would just use the Imperial ones you have and a calculator. Job done for no cost.

Thread: Preventing scaling
01/12/2015 21:06:51

It is a shame you do not have any local engineering or toolmaking companies to put these kind of jobs in with their batch.

When I ran a mould making tool room we specified "Vacuum Hardening" for parts we wanted to come out clean. I was always willing to put odd bits in with our work as most times we where no where near the minimum order value.

Thread: Modifying a hardened Machine Vice
01/12/2015 13:29:25

Working all my life as an Injection mould toolmaker I have cut plenty of hardened steel. We got to the stage where we would rough out to around 2mm per face then harden to 52/54 HRC and finish after to eliminate distortion from hardening. Modern coated carbide cutters work well, keep as ridgid as possible don't be tempted to use big cutters 6/8mm for what you intend to do is fine. Keep the speed up and light pecks of around 0.010"/0.020" a fairly rapid feed rate so the carbide does not dwell and rub. Good eye protection is a must and may be gloves, the chips come off fast and hot.

Thread: HI, I'm Iain
30/11/2015 17:22:24

Welcome Iain, from another newby. My machinery is a bit bigger to cope with motorcycle parts and not models.

Enjoy the forum and the hobby, when you get in the workshop time evaporates ! Chris.

Thread: Motorcycle Restoration
29/11/2015 21:34:14

For BSA unit singles Rupert Ratio's books are highly recommended. They give what it should/should not have and all the fixes to make them reliable.

Thread: Chipmaster power issues
29/11/2015 19:30:17

I have not seen the Clark converter but do have two differing ways of running my machinery. The lathe has a three HP motor that is not dual wired to run 240v or 440v so that runs off a Transwave static converter of around 4.5HP capacity at the 400 volts.

My Bridgeport mill was originally wired to run off the same Transwave kit but was never happy and would stop after a short run time. This was changed to a digital inverter drive (a cheap Chinese one for around £90) the motor was changed delta to star or the other way around and runs perfectly. I did not do the wiring, that was done by a friend who knows what he is doing.

What I am saying is these things are not a plug and play, most ordinary household electricians have no idea on the three phase wiring .

Thread: Internal Combustion Engine Supercharger
29/11/2015 18:46:23

Having a life long desire to compete in various forms of motorsport I have "Blown" a few of my cars. Always by buying the blower and making up the bits to fit and get it to work. Is your wallet big enough for a steel crank? I would be reluctant to add a blower to an original Seven. Maybe get hold of a reliant engine to play around with. If you do go ahead I suggest casting the main casing. A good aluminium foundry local to me (20 miles) here in the Midlands if you require castings. Chris.

Thread: Finding the centre of a hole
29/11/2015 16:40:28

In my 50 years of toolmaking nothing beat the piece of bent 1/4" round bar to hold the DTI. Simple and effective and used in a drill chuck or collet. I have several sizes made up to centre work pieces round square of rectangular all use the same bars. So bend a piece of bar to suit the diameter of your attachment for holding the DTI. For most work bend at 90 degrees with say 2" x 3" and job done.

Thread: Turning 304 stainless
28/11/2015 22:23:18

I take it that it is a motorcycle wheel spindle. I am not a lover of stainless for this type of application but have made a few. (I would use EN16T). To get reasonable results try turning at around 500/650 RPM and apply a little cutting compound to the work piece. This should stop it knocking the tool about, if no better go a little slower. Screw cut to within 5 or 10 thou and run a die down with plenty of compound to ease the cutting.Lubricate the threads when fitting the nuts to prevent galling. Chris.

Thread: Are bigger bearings better?
28/11/2015 17:05:44

I think it is a case of what do you intend to do with them. The bigger ones may just "Over Engineer" the project. I use Simply Bearings on a regular basis with good service/web site.

Thread: Choice of Milling Cutters
24/11/2015 20:31:24

I know there are work arounds, to much faff when you want to measure a cutter to give a known size.

Thread: Machining the pocket in a slide valve
24/11/2015 20:23:26

Just part of the learning curve on a mill.

Thread: Choice of Milling Cutters
23/11/2015 16:34:04

Big downside of three flute stuff is measuring the things once they are re ground. I can't justify the special micrometer required.

Thread: Hello I'm Skelly
23/11/2015 09:07:39

Hi, I am another like you and have just joined the forum, for me it is pre war bikes. Bridgeport mill and a similar size lathe, just over the border in frosty Staffordshire but with a Derby postcode.

Thread: Small screw gripper
23/11/2015 09:02:26

Me being a "toolaholic" I will order one.

Thread: Grinding a four-jaw chuck
23/11/2015 08:55:21

I have heard about people doing similar things with a dremel lashed on to the lathe. All seems a little to dodgy for me to attempt even with my tool post grinder. Question is it the jaw that is tapered or are they belling out when tightened due to poor groove location. If it is poor location grinding in situ may not help and best to try and improve. Chris.

Thread: Mill to replace drill?
22/11/2015 16:19:22

I have never had a drill press or any desire to own one. All my drilling is done on my Bridgeport turret mill, it does have a 4" spacer in the turret to give more height quill to table.

Thread: BSW/BSF vs BSC
22/11/2015 10:29:00

Add in BSA use of one size down hex sizes to access things like magneto nuts to put more doubt in your mind. I have used 1/4" BSF on cycle parts for years with no problems, with the tolerance of thread forming it is near impossible to tell the difference.

Thread: How to make a hollow punch for making teflon washers
22/11/2015 10:18:28

Take a look at the Clark wad punch and copy the idea of a spring loaded centre. I am soon to make one for felt oil seals of similar dimensions.

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