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<blockquote data-quote="oexing" data-source="post: 170942" data-attributes="member: 1493"><p>With the condition of most parts I decided on lots of modifications I thought useful or more reliable. So yes, all new homemade cam spindles with M8x1 threads, no nylocs there but small o-rings in recesses. Cams got crowded needle bearings in these new Andrews cams I got 30 years ago. The two head stock threads helicoiled for M 8 , simple. BMW 34x51x12 mm taper roller steering bearings like I did 20 years ago on the 1935 Horex four-valver. No hollow axles anywhere, metric taper rollers with lathe set distance tubes between inner races , swing arm as well. Certainly no felt seals but modern seals , no protruding hollow axles, hate them when changing tires. Cam plate spindle is different in holding the cam plate UP with a flange and a nut from above bolting the lot up onto the alu block inside. My idea to get a stronger assembly from this, the imperial thread was no factor here, just my idea of a stronger longer lasting design. The threads on both sides of gearbox mainshaft are still imperial but the clutch end was turned down a bit for restoring a nice undersize thread with good flanks so I made undersize nuts as well. Same with the other end for bolting up the drive sprocket: The Spares Co flat nut was very sloppy in my eyes so I made new strong nuts for hook spanners, no hexagon there. I can do imperial no problem - when I want to and it makes sense.</p><p> The crankshafts and conrods are all homemade and in most places metric, just fits for oil pump scroll and half time pinion certainly imperial size. I never said imperial threads were weaker, just today they are not practical to have, not in UK really, even less in rest of world - when you put down the rose tinted glasses. Still there is a lot left for completing the bikes, hope I live long enough - and I got some more bikes for restoration.</p><p></p><p> Vic</p><p>[ATTACH=full]58911[/ATTACH]</p><p></p><p>[ATTACH=full]58912[/ATTACH]</p><p></p><p>[ATTACH=full]58913[/ATTACH]</p><p></p><p>[ATTACH=full]58914[/ATTACH]</p><p></p><p>[ATTACH=full]58915[/ATTACH]</p><p></p><p>[ATTACH=full]58916[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 170942, member: 1493"] With the condition of most parts I decided on lots of modifications I thought useful or more reliable. So yes, all new homemade cam spindles with M8x1 threads, no nylocs there but small o-rings in recesses. Cams got crowded needle bearings in these new Andrews cams I got 30 years ago. The two head stock threads helicoiled for M 8 , simple. BMW 34x51x12 mm taper roller steering bearings like I did 20 years ago on the 1935 Horex four-valver. No hollow axles anywhere, metric taper rollers with lathe set distance tubes between inner races , swing arm as well. Certainly no felt seals but modern seals , no protruding hollow axles, hate them when changing tires. Cam plate spindle is different in holding the cam plate UP with a flange and a nut from above bolting the lot up onto the alu block inside. My idea to get a stronger assembly from this, the imperial thread was no factor here, just my idea of a stronger longer lasting design. The threads on both sides of gearbox mainshaft are still imperial but the clutch end was turned down a bit for restoring a nice undersize thread with good flanks so I made undersize nuts as well. Same with the other end for bolting up the drive sprocket: The Spares Co flat nut was very sloppy in my eyes so I made new strong nuts for hook spanners, no hexagon there. I can do imperial no problem - when I want to and it makes sense. The crankshafts and conrods are all homemade and in most places metric, just fits for oil pump scroll and half time pinion certainly imperial size. I never said imperial threads were weaker, just today they are not practical to have, not in UK really, even less in rest of world - when you put down the rose tinted glasses. Still there is a lot left for completing the bikes, hope I live long enough - and I got some more bikes for restoration. Vic [ATTACH type="full" alt="P1050791.JPG"]58911[/ATTACH] [ATTACH type="full" alt="P1090107.JPG"]58912[/ATTACH] [ATTACH type="full" alt="P1100239.JPG"]58913[/ATTACH] [ATTACH type="full" alt="P1100232.JPG"]58914[/ATTACH] [ATTACH type="full" alt="P1070648.JPG"]58915[/ATTACH] [ATTACH type="full" alt="P1050484.JPG"]58916[/ATTACH] [/QUOTE]
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