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by malcolm.johnson
Mon May 14, 2018 10:13 pm
Forum: Ariel Talk
Topic: Dave Thomas`HT - Page 14 May Cheval
Replies: 5
Views: 860

Re: Dave Thomas`HT - Page 14 May Cheval

Nice bike Dave. I have been pondering what this frame was since I got it and now seeing the picture of your bike, it all seems to make sense. Other items in the collection, now can be linked to this frame and it is clearer to me what was originally envisaged. Thanks.
by malcolm.johnson
Mon May 14, 2018 9:55 am
Forum: Ariel Talk
Topic: Dave Thomas`HT - Page 14 May Cheval
Replies: 5
Views: 860

Dave Thomas`HT - Page 14 May Cheval

Please pardon my ignorance, but could anybody tell me if the frame of the HT motorcycle pictured is of Ariel manufacture, or is it of some special make, made to accommodate Ariel engine and gearbox components. The reason for asking is that some time ago I purchased a collection of Ariel parts from a...
by malcolm.johnson
Wed Apr 11, 2018 10:04 am
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

Re: SQUARE 4 CRANKCASE REPAIR

I am the last person to destroy a pair of Square 4 cases (albeit damaged), without good need and it was one of the reasons for starting this post ie. to find a good way forward. Whatever I do, will not happen soon. I have my doubts about achieving a good repair to the 46 cases, so will probably expl...
by malcolm.johnson
Tue Apr 10, 2018 12:15 pm
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

Re: SQUARE 4 CRANKCASE REPAIR

Thanks David, I have a personal friend who runs a good fabrication/welding business and does all my alloy welding with TIG. He always insists that I do the preparation, and only works on pre heated and spotless components. Can I ask you David, what you fabricated the strut from ie. was it machined f...
by malcolm.johnson
Mon Apr 09, 2018 10:32 pm
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

Re: SQUARE 4 CRANKCASE REPAIR

Thanks Paul, great news, I now know what direction to take my efforts in. Lets see if I can make a good repair of those cases then. Cheers, Malcolm.
by malcolm.johnson
Mon Apr 09, 2018 5:46 pm
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

Re: SQUARE 4 CRANKCASE REPAIR

Hi John, You are probably correct on that, as I just lumped the two DK`s as 1947. The other cases I have are DE 461. The 2nd cases I am sure are 1947 with the number DK734 and are the ones I am hoping to use, as they are going into going into frame XP 1576 and I have a gut feeling that they may have...
by malcolm.johnson
Mon Apr 09, 2018 12:25 pm
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

Re: SQUARE 4 CRANKCASE REPAIR

Thanks for your thoughts John, Yes it looks like that type of "magic stuff". It would be a case of grinding out a "vee" for the weld hoping to clean up the alloy and see how the welding goes. My real worry was the bearing outer moving in the case or the crack opening again, when ...
by malcolm.johnson
Sun Apr 08, 2018 8:17 pm
Forum: Four stroke
Topic: SQUARE 4 CRANKCASE REPAIR
Replies: 13
Views: 1740

SQUARE 4 CRANKCASE REPAIR

DK 167.JPG I have these two crankcases for my new square 4 project. The first has a crack extending from the case mouth by the engine number, right down and through to the front main bearing boss. An attempt has been made in the past to repair. It could and should have been done better, but I would...
by malcolm.johnson
Mon Feb 12, 2018 8:59 pm
Forum: Four stroke
Topic: Brightspark easycap.
Replies: 9
Views: 1196

Re: Brightspark easycap.

Thanks for all your replies so far. The britbike info is interesting reading and I have found the recommended supplier Digi- Key in Uk and they stock the recommended capacitors detailed from the tests. Also Paul, thanks for your input, but I do not know Tony Coopers contact details. What kind of sol...
by malcolm.johnson
Sun Feb 11, 2018 11:22 pm
Forum: Four stroke
Topic: Brightspark easycap.
Replies: 9
Views: 1196

Brightspark easycap.

I must make the effort this year to get my 1947 4g much more reliable. It has had little use due to a bad misfire after about 10 miles into a run when the engine gets hot. I have tried many things, but I am sure it is the capacitor that is failing, although the magneto had a full rebuild many years ...

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