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

[skidlids]

Originally Posted by Matt-T28

Just to add my own thoughts on this subject,

David hasn't got anything in his engine that would not have come out of the factory in another bike on a different day of the week.
Its just that some engines are better than others as some will have fractionaly lighter parts, thats just the way it is. Its luck of the draw but all David has done is to turn his engine from a slower one with slightly heavier parts into one of the better engines.

I dont see the problem with that, as someone could go out tomorrow and buy an engine thats never been apart before that has a lighter crank than his but it would still be a standard engine.

But someone elses could have come out of the factory with poorer flowing heads due to factory tolerances, which wll cause the engine to run out of balance
So where does this line of acceptance get drawn ? is it when everybody can pay out to have there engine Blue printed to factory spec

As for reliability One blow up in 4 seasons under the No modification rule would suggest that as they come from the factory they are pretty reliable

[Matt-T28]

What engine rules are in place for Superstock racing?

Surely what we have is a similar kind of thing to that?

[nogaromill998]

1.6.21 Crankshaft

No modifications are allowed (including polishing and lightening).


Thats what the rules say quite clearly. Where does it say that balancing is disallowed?

[skidlids]

Originally Posted by nogaromill998

1.6.21 Crankshaft

No modifications are allowed (including polishing and lightening).


Thats what the rules say quite clearly. Where does it say that balancing is disallowed?

just here

1.6 Machine Specifications

All items not mentioned in the following articles must remain as originally produced by Ducati on a 600 or 620 aircooled 2 valve model.

[nogaromill998]

Originally Posted by skidlids

just here

1.6 Machine Specifications

All items not mentioned in the following articles must remain as originally produced by Ducati on a 600 or 620 aircooled 2 valve model.

It doesnt mention wheel balancing either. Is that also disallowed under the same blanket?

[skidlids]

Originally Posted by nogaromill998

It doesnt mention wheel balancing either. Is that also disallowed under the same blanket?

try reading the rules rather than making your own up

1.7.1 The following items MAY be altered or replaced from those fitted to the homologated motorcycle:

Any type of lubrication, brake or suspension fluid may be used.

Any type of spark plug.

Any inner tube (if fitted) or inflation valves may be used.

Wheel balance weights may be discarded, changed or added to.

If used Wheel balance weights must be suitably taped.

Gaskets and gasket materials.

Instrument and instrument bracket and associated cables.

Painted external surface finishes and decals.

[webteam]

An interesting discussion and one I that I've enjoyed reading (even if I am in anorak mode for a while).

A question:

If someone has a big end failure and NEEDS to rebuild and finds the crank is scored:

Does this then mean that for DD racing (using our rules) it means a replacement crank straight away???

Also -
My basic impression of 'balancing' is that it matches components (or, yes - alters them) to reduce vibration and hence increase reliability....

But perhaps someone might like to explain further

Cheers - Frank

[nogaromill998]

Then go through EVERY DD bike and make sure NOTHING on any of them is modified beyond your interpretation of the rules Kev. Thats the only fair thing to do...or adopt a common sense approach and accept that balancing does NOT involve modification or polishing or lightening, and neither does it give any performance advantage whatsoever.

[skidlids]

With regard to the crankshaft rule that we have had in the rule book for the 4 previous years, no doubt there are some out there that have already ignored that rule and had work done and got away with it. sadly thats human nature

BUT what is it that is now wrong with that rule.
Its very clear, its in black and white, easy to understand.
So why would we now need to change it.

Excuse 1 = Improve reliability = evidence already says they are reliable
Excuse 2 = Somebody may have a better one than me = and some probably haven't
Excuse 3 = Its good practice = only if the factory balancing is along way out and it costs just to find out
Excuse 4 = No Modification doesn't mean I can't modify it = says who
I'm sure if I read back through the topic I will come across a few more excuses

[nogaromill998]

It ISNT modified......not in any way, how many more times Kev? And who are you or anyone else to determine someones right to do something within the rules that costs anything if they so choose? If someone wants to spend the money to make sure the engine is as well put together as it can be why cant they? It doesnt say ANYWHERE in the rules that there is a ceiling or a limit on what may/may not be spent on any one area of the bike build? if someone wants to spend £500 on a Nitron shock would you tell them it goes agains the spirit of DD ? Why not have a set of rules that says you can do NOTHING to a Class B bike save remove lights, stand etc, if you really are on a crusade to save other people's money for them? What happened to freedom of choice WITHIN THE RULES?