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by Bob.Murphy
Tue Sep 03, 2019 6:49 pm
Forum: Four stroke
Topic: Sq4 MKI timing case breather
Replies: 10
Views: 3240

Re: Sq4 MKI timing case breather

Could it be the same as the one from my '58 'VH' ?? DSCN9014.JPG DSCN9015.JPG The hole in the Banjo Union = 0.524 inches. Banjo Union Head Diameter = 1.002 inches. Copper Pipe diameter = 0.300 inches (or thereabouts - its a bit distorted after all this time). Banjo Bolt Across the flats = 0.711 inch...
by Bob.Murphy
Tue Sep 03, 2019 5:37 pm
Forum: Ariel Talk
Topic: An interesting front brake at the 2019 Annual Rally
Replies: 2
Views: 1383

Re: An interesting front brake at the 2019 Annual Rally

Lew Wallwork modified a few brakes like that (I don't recognise the bikes in your pictures). I think he used 'Mini' parts.

Someone will have more details.

Here are a couple I took at the LDR in Patterdale in 2014:

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Bob.
by Bob.Murphy
Fri Aug 23, 2019 10:46 am
Forum: Member's Bikes
Topic: My 4G Restoration Blog
Replies: 134
Views: 31878

Re: My 4G Restoration Blog

[quote="paul.wirdnam"] I always take photos of all the bits going off to painters and platers to ensure I get the same number of bits back :shock: [quote] I do the same; but I also edit the pictures to give each item a number and a description and then give them the prints and a separate l...
by Bob.Murphy
Fri Aug 23, 2019 10:36 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 3942

Re: Which Bronze to use ?

An interesting series of vids - I stopped after three ! I suspect a visit to the 'Dorset Steam Fair' might be worthwhile as people with traction engines, road rollers & stationary engines are likely to have space and piles of stuff they never throw out :lol: . The Heritage Railway sites might be...
by Bob.Murphy
Thu Aug 22, 2019 11:36 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 3942

Re: Which Bronze to use ?

I am currently running my 3 phase machines off a 3 phase converter, and it is something that I would not recommend unless there is no other way. I looked into this some while back and it appeared a bit suspect to me. The 'converter' doesn't produce three phases, it produces two by splitting the sin...
by Bob.Murphy
Thu Aug 22, 2019 10:10 am
Forum: Main Chat Forum
Topic: Daily Fixing and Riding Diary on an Ariel 2019
Replies: 316
Views: 44835

Re: Daily Fixing and Riding Diary on an Ariel 2019

Steve, There is a review of that bike in "Motorcycle Sport & Leisure" this month. It sounds very good - but the range lets it down for me. I think we are still too early in the development cycle - I'll be watching with interest. Hydrogen is the way to go as it matches the versatility o...
by Bob.Murphy
Thu Aug 22, 2019 10:02 am
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 3942

Re: Which Bronze to use ?

Installing 3ph is no small undertaking. Fortunately, my (very large & very old) Farmhouse has three phases coming in. I use two phases for the domestic 240v supplies, each with 14-way consumer units. I put trunking underground between the house and outbuilding some years ago. The Garage/Worksho...
by Bob.Murphy
Wed Aug 21, 2019 7:11 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 3942

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: 3942

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: 1496

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...

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