Home
News
Products
Design
Manufacture
Contact

Supermono

April 2008

 

We are continuing to develop a range of transmission parts for the 4 stroke motorcross engines being converted for use in supermono racing.  Close ratio road race style 5 speed gear clusters have been produced for the CRF450 and YZF450 engines.  Higher ratio primary gears for the CRF engine are now available. 

A 6 speed gearbox for the CRF450 has successfully completed its first meeting, being placed 6th and 4th in the British Supermono Championship rounds at the Snetterton race track on 11th and 12th April. 

Close ratio gear set

A complete racing gear set with three undercut engagement dogs on each gear to give fast positive gear changes.   Assembles using all standard circlips, spacers etc from the standard gear box not supplied.

The Gearbox comprises of both input and output shafts, all gears and splined bushes for 4th input and 2nd output which reduces the wear problems associated with the standard arrangement.

The ratio's are as follows:

1st           1.812: 1            
                            )       23.8%
2nd             1.38:1             
                            )       17%
3rd            1.143:1         
                            )       12.5%
4th                    1:1       
                            )       8.7%
5th            0.913:1      
                            )        6.8%
6th               0.85:1

Overall Reduction 53%

Price £1100 + vat & carriage

 

Straight cut primary gears

Essential for the reduction in side thrust on both crankshafts and gearbox. Manufactured to accept the standard clutch basket and supplied with rivets to assemble.

Reduction Ration 2.625:1

Price £230 + vat & carriage


Content updated
with 123Live!

Nova Racing Transmissions Ltd  8 Horseshoe Yard  Crowland  PE6 0BJ  UK
Tel: 01733 210082  Email: info@novaracing.com