Norton six speed close ratio gear
sets to fit standard AMC cases

<< back to products

These are recommended only for use with 500cc engines, eg. Manx Norton, G50's, Matchless, Weslake and Norton 500 twins.  As these require a different length mainshaft, it is essential we know which machine they are for when ordering.

We have been asked on numerous occasions if they are suitable for Norton Commando Twins.  Whilst we do not sell them on this basis and would accept no responsibility for damage caused to them it may be with an outrigger bearing their use may be possible.

The gear sets comprise of both shafts with all gears, sleeve gear runs on needle roller bearings, selector forks, selector plates with drive gear and selector quadrant.

Ratio's:

1st  16/24    1.5:1 x 1.5:1  =    2.25:1                         
                                                               )        30%
2nd 20/21    1.05:1 x 1.5:1 = 1.575:1  
                                                               )     17.8%
3rd 22/19   0.863:1 x 1.5:1 = 1.295:1
                                                              )        15%
4th 23/17   0.739:1 x 1.5:1 =     1.1:1    
                                                              )            9%
5th                                                    1:1       

1st to 5th overall reduction 55.5%

Price £1100 + vat & carriage

 

Norton six speed close ratio gear
sets to fit standard AMC cases

Based on the original Shafflitner design, though not an exact copy.

Ratio's:

1st   16/24  1.5:1   x    1.5:1    =  2.25:1 
                                                                    )  22.8%
2nd   19/22  1.158:1  x 1.5:1  =  1.737:1
                                                                    )  17.8%
3rd   21/20  0.952:1  x 1.5:1   =  1.428:1
                                                                    )  14%
4th   22/18  0.818:1  x 1.5:1   =  1.227:1
                                                                    )  9.7%
5th   23/17  0.739:1  x 1.5:1   =  1.108:1
                                                                    )   9.75%
Top                                            =  1:1    

Drive ratio 16/24  1.5:1

Overall Reduction  1st - 6th 55.5%

These are recommended only for use with 500cc engines, e.g.. Manx Norton, G.50's, Matchless, Weslake and Norton 500 twins.  As these require a different length mainshaft, it is essential we know which machine they are for when ordering.

The gear sets comprise of both shafts with all gears, sleeve gear runs on needle roller bearing, selector forks, selector plates with drive gear and selector quadrant.

Price £1250 + vat & carriage