1.a Norton SOHC Vertical Coupling and Bevel Parts

1.a Norton SOHC Vertical Coupling and Bevel Parts

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SOHC Mainshaft Bevel Gear - International Engines

Product no.: 0422 A11/748
This is the crankshaft bevel gear, fitted to all SOHC International and CS1 engines. These gears have been faithfully reproduced using original Norton gears as the pattern and are identical in all dimensions, including the tooth profile, so they can be used in conjunction with original lower vertical bevel gears if you already have one of these. They are manufactured for me by a specialist helical gear manufacturer in the UK and are very high quality. Photograph 1 shows the gear from front and rear. Photograph 2 shows an original Norton gear at the top of the photograph and our gears underneath. Photograph 3 shows the International bevel gear on the left, with the shallower SOHC Manx gear on the right. The International gear was fitted to all Aluminium crankcase engines. The gear has PVN branding etched on the rear. Note: 17/11 - we will shortly be offering Oldham couplings and upper bevel gears as well
£120.00 *

SOHC Mainshaft Bevel Gear - Manx Engines

Product no.: 0423 A11M/748
This is the crankshaft bevel gear, fitted to SOHC (and early DOHC) Manx engines. It is identical to the International gear, other than the shoulder at the rear of the gear is narrower, as the Manx timing side crankcase is fitted with a wider double row bearing. These gears have been faithfully reproduced using original Norton gears as the pattern and are identical in all dimensions, including the tooth profile, so they can be used in conjunction with original lower vertical bevel gears if you already have one of these. They are manufactured for me by a specialist helical gear manufacturer in the UK and are very high quality. Photograph 1 shows the gear from front and rear. Photograph 2 shows an original Norton gear at the top of the photograph and our gears underneath. Photograph 3 shows the International bevel gear on the left, with the shallower SOHC Manx gear on the right. The Manx gear is fitted to magnesium crankcase engines. The gear has PVN branding etched on the rear. Note: 17/11 - we will shortly be offering Oldham couplings and upper bevel gears as well
£120.00 *

SOHC Lower Bevel Gear Set

Product no.: 0424 LBevel1
This item is for the pair of lower SOHC bevel gears - Item 0421 and either item 0422 (International Crankshaft Bevel Gear) or item 0423 (Manx Crankshaft Bevel Gear). See the individual items for the description of each. Please state if you require International or Manx crankshaft gear when you place the order. These gears are fractionally cheaper when bought as a pair
£285.00 *

Vertical Shaft Top or Bottom Bevel Collar

Product no.: 0460 A11/754

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. Ideally the collar should be a 'nip' fit over the shaft, where it is lightly tapped on (I use an alloy drift with hammer, with the bevel gear bottom face sitting on an alloy/wood block). For the lower bevel gear this also seems to serve a second function, in that it stops the lower bevel gear dropping through gravity onto the crankshaft bevel gear. Not sure if this was Norton's original intention (or actually if it makes any significant difference!), but for this reason, I always try and make the collar a nip fit on the shaft. Because there seems to have been a considerable variation of SOHC Bevel Gear shaft diameter variation (i have seen up to 1.5 thou variation on the quite considerable number of gears I have measured - even unworn shafts) we have made these collars to be a good fit over the bevel gears we manufacture - which we believe to be the most correct diameter - i.e. a nominal 0.7485" - 0.749". If the collar is not an ideal fit over your own gear:- if too tight - you can carefully 'flapwheel' the inside diameter of the collar, until it taps on, or, if too lose - use a small quantity of 'Bearing Fit' to retain the collar. Note: we also sell a one thou undersize collar (Item 0470), so if you have an original bevel gear and you think the shaft diameter is less than above, then probably best to go for item 0470 (or buy one of each . . . and you can have a choice!)

£5.60 *

Vertical Shaft Top or Bottom Bevel Collar - Undersize 1 Thou

Product no.: 0470 A11/754_US
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. Ideally the collar should be a 'nip' fit over the shaft, where it is lightly tapped on (I use an alloy drift with hammer, with the bevel gear bottom face sitting on an alloy/wood block). For the lower bevel gear this also seems to serve a second function, in that it stops the lower bevel gear dropping through gravity onto the crankshaft bevel gear. Not sure if this was Norton's original intention (or actually if it makes any significant difference!), but for this reason, I always try and make the collar a nip fit on the shaft. Because there seems to have been a considerable variation of SOHC Bevel Gear shaft diameter variation (i have seen up to 1.5 thou variation on the quite considerable number of gears I have measured - even unworn shafts). This particular item is an alternative to item 0460, it being approximately one (1) thousandth of an inch tighter on the shaft than 0460 - i..e. ideal for bevel gears with a nominal diameter of 0.7475" - 0.748" or less. if the collar is too tight - you can carefully 'flapwheel' the inside diameter of the collar, until it taps on, or, if too lose - use a small quantity of 'Bearing Fit' to retain the collar. Note: If you think your shaft is a greater diameter than above, then item 0460 may be better - or if unsure buy one of each!
£5.60 *

SOHC Crankcase Bevel Platform - Oil Return Blanking Plug/Washer (SS)

Product no.: 0660 A11/08X

Distinctive small hex blanking plug/bolt that locates on the left side on the crankcase lower bevel platfom.  CNC maufactured in stainless steel and includes red fibre washer 

£4.00 *
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31 - 36 of 36 results

1.a Norton SOHC Vertical Coupling and Bevel Parts
Norton SOHC Coupling and Bevel Casting Parts