Here is a list of all the postings Herman van der Merwe has made in our forums. Click on a thread name to jump to the thread.
|Thread: Colchester Student Mk1 Won't Start|
@Richard you have lost some images on page 1 ...
Sorry, the correct word would be "corrode" in the absence of oxygen. Oxygen is the only thing protecting alu. Take it away and you have many problems. Richard, if I remember lives next to the coast so he most probably is seeing inter-granular corrosion.
At what depth do these disappear? It can oxidize quite quickly especially in the absence of oxygen.
Me thinks those are oxidized aluminium. Was the raw stock stored in a sealed container of sorts?
Mat, the tension should be the same as per this message.
Let us know which one is correct!
Edited By Herman van der Merwe on 23/12/2020 05:52:17
Guys, guys, you need to remember that this is an English design. As you well know any English designed mechanical system is designed to leak oil to show you that there is still oil in the machine. Ask any Land Rover owner ...
Good job Richard, now you can leave in peace (vs pieces).
Safe travels and have fun at the Uni.
Phil needs some gardening done me thinks ...
Yes, this is my first impression as well!
Aha Phil, so the Memlite I was given is the time correct lamp for the Student Mk1 I have. Good to know!
Thanks Richard. I think Phil said your lamp is the genuine Colchester lamp.
RIchard, please take some pictures of the Colchester lamp you have. I want to show someone in SA what it looks like so that he can ID a lamp he has.
Richard, would it be possible for you to measure the end cover's hole diameters for me as well as distances from the small fastening hole so that I can locate and size the holes correctly on my cover? Mine has been cut oval with a cutting torch for some reason.
I see the bottom hole on Phil's and Mat's lathe is also elongated and not round. What is the reason for this? Any ideas?
Edited By Herman van der Merwe on 23/08/2020 19:07:57
Edited By Herman van der Merwe on 23/08/2020 19:12:30
Yeah Mat, looks tiny 'till you wanna lift them ...
Lights are like clamps. You can never have enough!
And that is what it should all be about!
A big old capstan lathe ... made for working ...
You did not heat the flange to red hot and then not enough flux you did add ... also the incorrect flame type.
So you learn, so you learn!
I would remove the big C-clamp. Braze a nut or two in the angle iron with a bolt through it and tension the shaft with this. That big clamp is going to move with heat and it is just simply awkward, huge and made in China.
I would still clamp the shaft with a short section of smaller angle iron with the grooved C-clamp riding on the corner of the smaller angle iron. You need stability when things get hot. Remember to wear gators over your safety boots. Last thing you need for some blob of brazing to jump loose and into your boot. This is not welding where you can grit your teeth while your flesh is going up in smoke.
Have fun brazing.
Your lathe is starting to look good. Your fingernails not ...
Did you remove the grub screw in the nut? If not, remove it, screw a bolt in there, put a strap wrench on the nut and put tension on it. While under tension give the bolt a wack. Will come loose ...
If yours does not have a grub screw, drill a hole and use a pin C-spanner to undo it.
Edited By Herman van der Merwe on 16/08/2020 16:50:57
Now you know why I took mine to bare metal. My lathe had seven layers of paint. The last three refused to budge with anything and I then used the trusted old method. Coat it with brake fluid. The next morning all the paint was soft except the original and the second layer. These were gooey as was all the putty and filler below it. Then I used a head gun with sharpened scrapers and a wire brush on a polisher to get this mess removed.
The Monarch guy spent AGES to get the inside of his lathe clean. And had many injuries caused by the rough sand paper finish from the casting process. He earned my respect as I know what a thankless job this is.
Make sure your scrapers are sharpened correctly and the paint comes off quickly for a while and then you need to sharpen again. Use a single cut file to do the sharpening.
Looking good Richard. I would still do the brazing as you will then have learned a lot! I am just a bit concerned that the very blingy handle can blind you when you switch on your new light!
Great job! Especially the cuppa .. Brain loves it. He thinks he is the special friend!
Yes, it must click with a resounding click. Like opening a can of cold Guinness ...
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