Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > No Modifications - what does it mean

[paynep]

Originally Posted by skidlids

I have read recently on another website about a DD bike having its crankshaft balanced.

From previous experience of this type of work it usually include one of the following
Grinding Metal away
Drilling or Milling away metal
Weldiing to add metal

Now with the DD rules concerning Crankshafts having remained unchanged in this area since the very first set of rule for the 2005 Season V1.01 up to the latest set of rules, they have always stated NO MODIFICATIONS TO THE CRANKSHAFT ARE ALLOWED.

Current rule reads
1.6.21 Crankshaft
No modifications are allowed (including polishing and lightening).

The only way you can get round it is to have a large selection of pistons and rods available and to balance the whole reciprocating mass (ie crank, piston and rods) by substituting different standard OEM parts.

So once again, if you have the money and/or can go to the specialists you can get a better(?) motor than taking pot luck on what the factory puts together.

Although, from a purely hypothetical stance for a racebike I wouldn't see the point in balancing a crankshaft without lightening it as well, and then you may as well go the whole hog and use a lighter flywheel and flow the heads too...

Who's website was it? I've checked mine for typos!