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Topics - john.k

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British Bikes / girder forks of unusual type
« on: September 06, 2020, 04:17:30 AM »
Has anyone noticed a tube video on F book of a Russian museum Matchless X3 /1931 ,...the bike has a set of uncommon girder forks ...not Matchless ,IMHO ,but maybe some continental type.........four straight tubes ,with a bridge across the top for top pivot and also headlight mount.............Im sure Ive seen similar on one of the 1930s tiddlers ,maybe a Wolf 250? imported to UK from Germany?

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British Bikes / Norton Laydown Gearbox
« on: February 27, 2020, 01:44:55 AM »
The time has come to do some repairs to my ES2.Possibly should have been done years ago.....anyhoo,I need a new mainshaft ,clutch spider ,and maybe a 4th gear,if not too pricey......When I last fitted bushes and bearings to the box ,there was a supply of ex WW2 gearbox parts ,which I used in some areas.......the mainshaft and 4th gear are different lengths between the boxes ,so no go there...............Ive looked for new bits,no one seems to have them anymore.....new mainshafts were available ,no more it seems..............Any ideas?

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British Bikes / JAP 750 MT
« on: August 03, 2019, 05:15:23 AM »
JAP 750 MT......got another one to rebuild .........rods and pistons are missing ,which isnt a big loss,as the rods are crap.......Anyhoo,Im thinking of using WLA Harley bits all thru........anyone her done this?....The WLA bigend is about .10" wider ,which isnt a problem as I see it........the only difficulty is a crankpin.......there is a new pin with the bits,but JAP in their wisdom used a 25.2mm size for crankpins,not 1"......In fact all the shafts are hokey metric sizes......Ideas,anyone......and dont say Alpha..........I wont live long enough to get a custom made pin from them.

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British Bikes / Amal 76/276 carb on its side.....horizontal.
« on: June 13, 2019, 05:55:57 AM »
Someone has mentioned an Amal 76/276 run horizontally...........I intend to do that with a JAP motor I have ,to shorten the intake pipe...........The only bike with a Horizontal Amal Ive been able to look at is a Triumph 350 single of the 30s.....and apparently ,it leaks more petrol than it burns........so its owner is keen to know too..........Ive got a float bowl setup that can  easily adjust the petrol level......same as the remote for a GP........But as the carb sits on top of the mag,petrol bath is obviously undesirable......Over to you.

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British Bikes / JAP 750 v twin ,type MTS
« on: May 10, 2019, 04:30:54 AM »
I have a JAP 750 to rebuild,and I m wondering about the drive side  mainbearing........the shaft is OK,but the outer race is chewed,and been turning in the case..............My old fallback of using INA races and rollers has hit a snag....SKF.......seems Skf have taken over INA,and prices are now astronomical,as in 2.FN.DR!...........inner race +caged roller +outer race..(need to be trimmed) is over $200.............but big advantage is it all fits in the case.......which case IMHO is a bit weak to be enlarging bearing bores.........However ,a 62/22 ball is 50mm od,needs about 4 mm enlargement,say 2mm  cut from the housing.(original bore is oval ,and needs skimming anyway,at 46-47mm........but a 62/22 is 22mmID,fits the shaft ,and costs around $20 depending on brand............one other option considered is tapered rollers with 22mm bore /44 mm OD,but obviously needs two opposed bearings ......not impossible,.....but.

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British Bikes / Oil shutoff taps and newbies.
« on: September 15, 2018, 02:27:59 AM »
I see an interesting item on the NOC singles forum.............in a nutshell,a Frenchman has bought a Norton 500T,about which he knows nothing ,and is asking a long list of silly questions.......but his latest pics show a shutoff tap on the oil line to the motor,....in the shut position.............Now as he doesnt know what ignition advance is,I think it unlikely he has figured out the purpose of the tap...................Will all the British bikes be wrecked by tossers who pay the large sums demanded for these classics..........but think they are as straightforward to operate as a car?

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American Bikes / Indian Scout gearbox 1926
« on: May 11, 2018, 09:36:18 AM »
I have a 1926 Indian Scout gearbox apart,and the bearing behind the clutch drum is a tapered roller,and has had the outer race ground back to suit the space available.The bearing should be a angular contact ball,but must have a narrowed outer race.Dimensions are standard 35x72x17 for the inner race,but the outer needs to be 14 mm wide to fit in the housing.Maybe Ill just leave the taper roller in place,its been there for who knows how long......Where is the best place to get the correct bearing?

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British Bikes / Ron Russ RIP
« on: November 13, 2014, 08:59:55 AM »
Ron Russ passed away last Saturday,after a short battle with asbestos cancer.Funeral today,there must have been over a hundred people there.He was a perfectionist engineer of old bike engines,one of the very few now who do things right.He will be sorely missed.Regards John.

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American Bikes / Indian Scout gearbox mainshaft.
« on: June 07, 2013, 02:16:09 PM »
I have a 1927 Scout gearbox with the end cut from the mainshaft.There s about 1/8in left of the flats for the  k/s ratchet,so I have the dimensions.Can someone tell me how long the flats are,and how long the thread is?Regards John.

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British Bikes / Panther 600 1939 or 1946?
« on: May 01, 2013, 10:54:44 AM »
I have a Panther 600 rigid frame, girder fork,which I am starting to restore.The engine no is W100 6339,frame no is 14288,BAP gearbox dated 1946.The frame is the postwar genny mount type,but the no appears to be prewar, going from Jones book where he says 14811 is 1940. The engine is 1939.Do we have a Panther expert who doesnt want 20 quid to tell me anything but the time of day.Do I have a bitser,or a 46 model made from prewar bits?Regards John..

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