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by Bob.Murphy
Wed Aug 21, 2019 7:11 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Re: Which Bronze to use ?

I have a 200A TIG and have had it on the max. setting enough times on my motorcycle projects that I wouldn't want anything smaller. I switch to a second tank of 50/50 He/Ar when I'm welding something like a lifting bracket from 1/4" Al and the He in the mix makes all the difference, adding eno...
by Bob.Murphy
Wed Aug 21, 2019 10:09 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Re: Which Bronze to use ?

I agree with that and couple of milling machines as well! Br, Eero The more the better :lol: . I only have one Milling Machine though (hiding behind the 170A AC/DC TIG Welder) :( . DSCN8974.jpg However, I am seriously considering a rather nice Colchester Triumph lathe (50" between centres). Th...
by Bob.Murphy
Tue Aug 20, 2019 10:07 am
Forum: Four stroke
Topic: square four valve timing
Replies: 6
Views: 488

Re: square four valve timing

It then dawned on me that as the cam shaft goes around twice to the cranks once that I could be 180 degrees out . Errr NO - the Camshaft turns at HALF engine speed (engine goes around twice for the camshaft's once). There are twice as many teeth on the camshaft sprocket as there are on the engine s...
by Bob.Murphy
Mon Aug 19, 2019 11:15 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Re: Which Bronze to use ?

In any case, the only way you'll know if you succeeded is after you've made the nut and disassembled the lathe to test its fit on the shaft. Given this, something to think about is buying a tap that would give the tightest fit (i.e. having the class of fit giving the smallest ID), making the nut, d...
by Bob.Murphy
Sun Aug 18, 2019 10:29 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Re: Which Bronze to use ?

I recently had this problem with my '48 colchester master lathe. Ooooh nice ! I'm currently looking at Colchester Triumph lathes - 50" between centres - as I'm becoming more & more disillusioned with my Chinese 'Warco 280VF'. Can I justify such a thing after spending all that money on the ...
by Bob.Murphy
Sun Aug 18, 2019 10:21 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Re: Which Bronze to use ?

I have 1/2" x 10 TPI ACME 29 taps & dies in both Left & Right hand but I'm reluctant to use them for the reasons you state. They are a bit of a blunt instrument. I have also got "Indexable" carbide tips for internal 10 & 8 TPI but they are quite substantial and the boring ...
by Bob.Murphy
Sat Aug 17, 2019 10:34 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1136

Which Bronze to use ?

A quick one for you Metallurgists out there . . . I'm finally getting around to re-furbishing my 1950s Denford Viceroy Lathe. The main problem is slack in the Cross-Slide and Top-Slide nuts. The 'nuts' are tubular pieces of bronze bored with a 1/2 inch 10 TPI British ACME Thread (29 degree cutting a...
by Bob.Murphy
Mon Aug 12, 2019 9:57 am
Forum: Four stroke
Topic: Lathe user?
Replies: 22
Views: 2733

Re: Lathe user?

Pictures from "BertieB" . . . The spindle fits 8-) . Something doesn't look quite right though and the spacers need 'adjusting' to bring everything into line. The speedometer drive hasn't been fitted either. Hopefully the offside frame rail will spread out to allow everything to be accommo...
by Bob.Murphy
Wed Jul 31, 2019 3:43 pm
Forum: Four stroke
Topic: Lathe user?
Replies: 22
Views: 2733

Re: Lathe user?

Well, I haven't heard from 'BertieB' for a while - I think he's on holiday - or else he's gone to ground ! Progress (YEAH !) the shaft is ready, but as I have no idea what his real name is, or where he lives I can't post it to him. Hopefully he'll be answering my PMs soon. 'Bertie' sent me the spind...
by Bob.Murphy
Wed Jul 31, 2019 10:01 am
Forum: Ariel Talk
Topic: 1948 Iron 4G Coil Ignition
Replies: 64
Views: 3750

Re: 1948 Iron 4G Coil Ignition

It does sound like fuel starvation. 1. Does fuel run cleanly from the fuel tap in the tank (no clogged filters in the tank) ?? 2. Its a very long time since I had a Solex carb, but: If you remove the float bowl while its connected to the fuel tank - does fuel run cleanly from the needle jet - and do...

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