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Topics - john.k

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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 other option considered is tapered rollers with 22mm bore /44 mm OD,but obviously needs two opposed bearings ......not impossible,.....but.

British Bikes / Oil shutoff taps and newbies.
« on: September 15, 2018, 02:27:59 AM »
I see an interesting item on the NOC singles 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, 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?

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?

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.

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.

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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