Yamaha LC350 & YPVS Gearbox

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Yamaha YPVS Low Ratio Conversion with Input Shaft

Whilst the top three ratios are close and well spaced for racing there is a high gap between 3rd and 4th gear, a particularly undesirable feature for racing.

Raising the first three gears to close the gap also closes all the ratios.

To give an overall reduction the same as the TZ250/350 the components supplied are a replacement input shaft and 1st output, both 2nd gears and 3rd output.

 

Available With Superfinish

 

Comparison to Standard Yamaha YPVS Gearbox

 

Nova Race Gearset                % Drop              Yamaha Standard Box               

 

1st      16 - 33        2.063:1                                  1st      14 - 36        2.571:1  
                                                 )   23.5%                                                                  )     30.9%
2nd     19 - 30        1.579:1                                 2nd     18 - 32         1.777:1 
                                                 )   19.4%                                                                  )     25.8%
3rd      22 - 28        1.272:1                                  3rd      22 - 29        1.318:1 
                                                 )   14.9%                                                                  )     17.8%
4th       24 - 26        1.083:1                                  4th      24 - 26        1.083:1   
                                                 )   11.3%                                                                  )     11.3%
5th      26 - 25         0.961:1                                  5th      26 - 25        0.961:1  

                                                 )     7.5%                                                                  )       7.5%

6th      27 - 24         0.889:1                                  6th      27 - 24        0.889:1
                                 

Overall Reduction 1st - 6th     58.0%                 Overall Reduction 1st - 6th      65.4 %

 

Price £600 + VAT (if applicable) & Carriage

 

	Nova Yamaha YPVS Close Ratio Conversion

 

Yamaha LC350 & YPVS Low Ratio Conversion Gearbox 

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The components supplied are replacement 1st, 2nd, 3rd output gears and 2nd Input.

 

Available With Superfinish

 

Comparison to Standard Yamaha LC350 & YPVS Gearbox

 

Nova Race Gearset                % Drop              Yamaha Standard Box               

 

1st      14 - 33        2.357:1                                  1st      14 - 36        2.571:1  
                                                 )   33.0%                                                                  )     30.9%
2nd     19 - 30        1.579:1                                 2nd     18 - 32         1.777:1 
                                                 )   19.4%                                                                  )     25.8%
3rd      22 - 28        1.272:1                                  3rd      22 - 29        1.318:1 
                                                 )   14.9%                                                                  )     17.8%
4th       24 - 26        1.083:1                                  4th      24 - 26        1.083:1   
                                                 )   11.3%                                                                  )     11.3%
5th      26 - 25         0.961:1                                  5th      26 - 25        0.961:1  

                                                 )     7.5%                                                                  )       7.5%

6th      27 - 24         0.889:1                                  6th      27 - 24        0.889:1
                                 

Overall Reduction 1st - 6th     62.3%                 Overall Reduction 1st - 6th      65.4 %

 

Price £400 + VAT (if applicable) & Carriage

 

	Yamaha LC350 & YPVS Close Ratio Gearbox Conversion