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–JdK– That is my Thirties Worldwide Norton, purchased in September final yr. I took the bike to B.O.M’s Veteranen Tour in Belgium final weekend and as I hate to hold bikes on a trailer I rode the bike to Berlare, close to Antwerp, did the tour on Saturday to Houffalize close to Luxembourg and rode the bike again dwelling close to Utrecht on Sunday. All in all I did 585 miles – 940 km in three days with none points. These pics had been taken on Sunday night and I didn’t clear the bike. Astray we have seen oil tight Nortons earlier than however for a Carroll engined Norton that is fairly OK. A lot of the oil it leaks now comes from a breather throwing oil within the magneto chain case and I assume it was designed to leak out this manner as later Norton have a small tube on this chain case to empty extra oil. It runs on Castrol R40 bytheway.
What’s it? The Norton got here from the manufacturing facility in 1933 as a Mannequin 40. There is no point out of particular tuning however it had no kickstart, racing footrests and racing chain guards and huge tanks fitted. The engine presently fitted comes from a 1938 CS1 and has been on this body at the very least because the Sixties based on the outdated inexperienced registration e-book. The girders are 1946, the gearbox late Thirties. Earlier homeowners had been James Gardner (1966), Henry Ormonde Gurr (1973) and Dennis Butler (1987). I believe Butler had it offered by Andy Tiernan in 2021 to Dave who offered it to me in September final yr.
There’s a film on YouTube (above) the place Andy Tiernan talks concerning the bike and it is fairly humorous. He remarks: “it was utilized by somebody who went to Scotland on it, cruising at 70 and seeing 80. The engine was finished by a well-known gentleman within the engine world linked to Ricardo, however cannot keep in mind his identify. It was finished to a really excessive commonplace”. I like Andy however this sounds a bit foolish. If anybody is aware of extra about any of the earlier homeowners (apart from Dave off beam) then let me know!
Dave preferred the bike so much and did 3000 miles on it in a single yr which to me steered the bike needs to be in first rate situation and it ran OK when it arrived. However as at all times I look forward to finding a lot unsuitable with a 90 yr outdated bike and I due to this fact took it to bits and rebuilt most of it over the winter.
I believed it could be good to record what wanted doing:
The engine was partly disassembled. The crank was left in situ, primarily as a result of the pinion is caught on the crankpin and I didn’t really feel like making use of loads of warmth and utilizing an enormous hammer. The large finish and mains really feel nice and every part contained in the engine appears to be like clear. The usual CS1 piston appears to be like unworn however the rings had been caught within the grooves which had been cleaned. The small finish bush was scored and due to this fact changed. The guides and valve stems have some put on however had been cleaned and reused as had been the springs. The cam field was cleaned and new rubber and cork seals fitted. I didn’t change the timing whereas this appears to be a combination between Mannequin 30 and CS1 timing; inlet opens 45 BTDC, closes 60 ABDC; exhaust opens 85 BBDC, closes early at 30 ATDC. Evaluate this to the tabulated knowledge we compiled. Maybe this was the genius of the well-known gentleman and Ricardo.
The gearbox wanted a number of new bearings and a thrust washer
Each wheels wanted new bearings and new brake drums. The outdated drums had been skimmed which feels like a good suggestion however the draw back is that every one commonplace dimension sneakers are too small now giving a really spongy really feel to the brakes. New drums fastened the issue.
The girders had been rebuilt utilizing new spindles. The headlamp was fitted with new brackets to place it considerably decrease. The 22 mm handlebars had been changed by correct 1″ bars which cured the vibration. Quite a few holes had been welded within the guards and new brackets fitted. Bizarre-threaded bolts and nuts changed all over the place. The internals of the dynamo had been thrown away and the lights substitute by power environment friendly LEDs. The magneto was rewound. All petrol and oil hoses changed. New tires fitted. New brackets and is derived fitted to the saddle. New petrol faucets.
Not too dangerous and it was price it, this has shortly develop into one in every of my favourite Nortons. Undecided if it is going to do 70-80 MPH in Scotland however it was very completely happy cruising at 55-60 MPH within the Ardennes yesterday.
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