1.a Norton SOHC Vertical Coupling and Bevel Parts

- This is the lower vertical bevel gear, fitted to all SOHC International and Manx engines and also fitted to earlier DOHC Manx engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. See detail listing for more information.  Price is Each.  24/12/21: - New batch Just in - identical to previous batch

This is the crankshaft bevel gear,, fitted to SOHC International (i.e. aluminium crankcase models - not magnesium) and 1930 onwards CS1 engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. Price is Each. Price is Each.  24/12/21: - New batch Just in - identical to previous batch

- This is the crankshaft bevel gear,, fitted to SOHC pre-Featherbed magnesium racing engines - i.e. M30/M40 and SOHC Manx type engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. Price is Each.Price is Each.  24/12/21: - New batch Just in - identical to previous batch

- Magnesium SOHC (Manx Spec) Bottom Bevel Casting, as fitted to pre-war Works bike, and occasionally some Pre and Post-War customer (i.e.Gardengate) Manx's. Includes Bronze bearing

Magnesium SOHC (Manx Spec) Top Bevel Casting, as fitted to pre-war Works bike, and occasionally some Pre and Post-War customer (i.e.Gardengate) Manx's.  Comes with bronze bearing fitted and pinned

- Aluminium SOHC Bottom Bevel Casting, as fitted to all road going Internationals and many racing Internationals as well as some SOHC Manx Nortons.  Comes fitted with bronze bearing and pinned

- Aluminium SOHC Top Bevel Casting, as fitted to all road going Internationals and many racing Internationals as well as some SOHC Manx Nortons. Comes with bronze bearing fitted and pinned.

- Large gland nut that screws into top or bottom bevel casting. Manufactured in high quality Stainless Steel. Direct replacement for original, but designed to accept modern 'O' Rings (3 per unit) rather than orignal rubbers ring (for improved oil retention)

- Copper/mineral wool (normally called Copanda) Washer used with Union Nut (normally requires replacement each time Union Nut is refitted).  Price is Each.  See listing for detail.

- This listing is for a SOHC Vertical Shaft, of the standard Norton type, fitted to most 500cc CS1 and International models from 1931-54, to accept normal SOHC Oldham Couplings.  It is CNC manufactured to a high standard of finish and accurate tolerances.  Please read detail listing before ordering to fully understand background and details of these shafts. Price is a discounted price.

This is the Oldham Coupling that is fitted to all SOHC engines as part of the the vertical shaft assembly.  Two of these are required per engine, and we sell them in various thicknesses.  This listing is for the Std 3/!6" thickness version.  See main listing description for further detail of fitting and thickness required.  Price is 'each'

This is the Oldham Coupling that is fitted to all SOHC engines as part of the the vertical shaft assembly.  Two of these are required per engine, and we sell them in various thicknesses.  This listing is for the none stanard type for different complression ratios - which we can offier in various thicknesses.  See main listing description for further detail of fitting and thickness required.  Price is 'each' (Nov 2023:  most sizes now back in stock, sitll waiting for new batch of Item 0683 though, sorry)

This is the steel collar that fits over the shaft at the end of the top or bottom bevel, its purpose being to contain the Oldham Coupling that fits into the tang at the end of the bevel gear shaft. Standard shaft diameter fit, see listing detail for more information.  Price is each

This is the steel collar that fits over the shaft at the end of the top or bottom bevel, its purpose being to contain the Oldham Coupling that fits into the tang at the end of the bevel gear shaft. This version is one thou (0.001") undersize on original fit, as the original shafts can vary fractionally with wear and usage, see listing detail for more information.  Price is each

- This is the very important twin row, self centering bearing that was originally fitted in both top and bottom bevel housings in all International and early Manx engines. Now obsolete and unobtainable - March 2020:  See detail listing for availability

- Single row (fixed race - not swivelling) RHP bearing, that can be used as an alternative to the original type twin row type (Item no 0005) on the top bevel housing only.  See detail description for this item and description for item 0005 before purchasing

- Essential when rebuilding your engine to ensure that the lower vertical bevel gear has the correct backlash and position in relation to the crankshaft bevel gear, these lower bevel shims fit between the timing case housing and the lower bevel housing. This is for a complete set of 5 shims in the following sizes :

0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

- Essential when rebuilding your engine to ensure that the lower vertical bevel gear has the correct backlash and position in relation to the crankshaft bevel gear, these lower bevel shims fit between the timing case housing and the lower bevel housing - Fitted in conjunction with the timing case shim, the ideal positioning is acheved when the gears are in line and there is a just perceptable gap (backlash) between teeth. - 

Available in the following 5 sizes : 0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

Note: if buying individual shims, please state size when you place the online order, thanks. Update Feb 2015: Now back in stock again

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these upper bevel shims fit between the cambox shell casting and the upper bevel housing. This is for a complete set of 5 shims in the following sizes : 

0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these upper bevel shims fit between the cambox shell casting and the upper bevel housing - this is for single shims available in the following 5 sizes :

0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

This is a set of 4 lower bevel shims, of the type fitted to later DOHC engines - those fitted with Coarse Bevel gears.  They have a larger central hole than the normal SOHC lower bevel shim - being just over 51mm diameter.  This is for a set of 4 shims in the following sizes:

0.5mm/0.3mm/ 0.2mm/0.1mm.  See listing for more detail on thicknesses.

This is for a single lower bevel shim, of the type fitted to later DOHC engines - those fitted with Coarse Bevel gears.  They have a larger central hole than the normal SOHC lower bevel shim - being just over 51mm diameter.  We can supply these shims in the following sizes: 

0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

- Dished Washer that fits under the Lower Bevel (twin) ball bearing on all SOHC bottom bevel castings. Designed to capture any errant balls that should drop from the bearing (a very common fault) and an absolute essential to fit. Price is each

- This set consists of the special ' Reduced hex' nuts fitted to Norton SOHC upper and lower bevel castings, along with studs and spring washers - all in stainless steel.  Set consists of 8 nuts, 8 studs and 8 washers.  They are made to the same dimensions as original Norton items - but as everytihng is in stainless steel, and the nuts have nice crisp faces, they also look pretty as well.  Price is per set. 

These are the 5/16" BS Cycle Studs, fitted to both crankcase and cambox to retain Bevel Castings, manufactured to original dimensions in stainless steel.  Price is each

- The correct (reduced head) nut, used to retain both top and bevel castings, 4 nuts are used per casting. Our nuts are manufactured to the original 'Reduced Hex' Norton dimensions but are in stainless steel, and the hex faces are milled - so they also look very pretty, which is important as they are a particularly prominent and visual part of the SOHC engine

These 'Reduced Width' stainless steel spring washers are of the correct profile as used on all Upright and Laydown Norton gearbox covers and also the SOHC Vertical Bevel Housing Studs.  These are in stainless steel and of good UK quality, price is for a pack of 10

Vertical bevel housings were originally fitted with 'Reduced width' plain 5/16" washers - so they did not foul the bevel housings.  We did used to offer these, but have now replaced them with Item 0102 Stainless spring variety - see listing for more detail

Manufactured from seamless and ground polished stainless steel tubing, these SOHC Bevel tubes are manufactured with exactly the same pressed flange as the original items - this size being to fit 350cc SOHC engines. They look lovely when fitted with our stainless steel bevel tube union nuts.  Price is per tube

Manufactured from seamless and ground polished stainless steel tubing, these SOHC Bevel tubes are manufactured with exactly the same pressed flange as the original items - this size being to fit 500cc SOHC engines. They look lovely when fitted with our stainless steel bevel tube union nuts.  Price is per tube - see listing for more information