CBR 600RR : Weight savings
The 03-07 CBR 600 RR's may have had kinda evolution during the years of development , regarding wet weight - but even the 07 CBR ( which is the most light one inside this chain ) is still a heavy pig , compared to this special CBR600RR we've build.
But there's a order of Dignity of weight saving :
1: rotating unsprung mass ( i.E.: wheels /discs )
2 : rotating sprung mass ( i.E.: alternator /clutch)
3 : static but unsprung mass ( Brakes , Axles )
4: static and sprung Mass with sub-categories :
a- distance from center of gravity
- a1: volumetric weight + weight saving potential + possibility to get closer to this center
b- absolute height from ground
- b1 : volumetric weight + weight saving potential + possibility to lower the height Components
+ All Components need to be considered regarding the Partition of weight which they have regarding the whole Bike and regarding the weight of all the Parts summed up in their category
+ All Components need to be considered in conjunction with the Money to spend for a mod
So some kind of Explanation here in example :
A real gain you get , if you locate the Battery ( which has a ~ 8 Times higher volumetric weight than gasoline ) somewhere
near the center of gravity of the bike , instead of using the space for a bit more capacity of Fuel . So if you'd like a Factor of dignity in Category 1 , then the Battery has the highest one ....well, lets say 10 ,because :
- it has most volumetric weight
- it has most weight saving potential
- it is easy to move it somewhere nearer to the center of gravity
...........high end Battery's cost 230$ for 1600gr weight saving , that's a rate of 14 Cent per Gram
A Carbon front Fender compared :
Is in category 3 ,
- has no high volumetric weight
- has no real weight saving potential
- is not able to relocate
- has no substantial partition in category 3 ( a rear fender even needs to be considered from distance of pivot , so even less dignity )
.......a well done Carbon Fender cost 170 $ for 300 gr weight saving , that's a rate of 0,56 Cent per Gram
THE CONCLUSION : it is 400% better to spend the dough into a lighter Battery , than into a Carbon Fender.
.....just assuming you want to do something , which helps the Bike going faster .
And these 400% are only the weight-side , not even mentioned the opportunity , to move the Battery closer to the center , and nearer to the ground .
So , what I've done :
First of course : removal of all superfluous stuff , cost nothing / weight saving 100% , Quotient ( work not considered ) : infinite
In Category 1 :
I : Magnesium wheels from PVM , 10 Spoke design , with superlight magnesium cush-drive ( same as used from Toseland , but 5.5"/3,5" )
II : ISR Brakediscs front in 320 mm with reader-slots for Traction Control (no weight saving here , but also no added weight ) . Those ISR discs have real stopping Power , the best experience I had with Brakediscs at all .
III : superlight rear Brakedisc from ISR , with reader-slots for Traction Control
In Category 2 :
I : Durbahn Race-Alternator , which has approx ~ 80 % reduced rotational Inertia
II : Aluminum Clutchplates , which saved 66% of weight ( the OEM Clutchplates are steel )
In Category 3 :
I : Durbahn Rearbrake-Assy superlight , saves close to 2lbs
II : ISR Radial mount CNC Machined Calipers , they save more than 2 LBS
III : not done yet , but soon : light Axles front and rear
Category 4 :
I : development of a light Fueltank , which is closer to the center of gravity .
II : development of a Carbon-Monocoque Tailsection , which substitutes the complete rear end of the CBR ( saves ~6-7 kilograms )
III : Latest Technology Battery we are testing , weight savings up to 65 % ( so we're talking about Kilograms here.... ! )
IV : Arrow Titanium Exhaust , which saves ~ 6 kg ( 13 lbs )
V : Rearsets I've made , which do not brake at a crash ( my buddy had 2 damaged swingarms from broken rearsets )
VI : as light as possible wire harness ( more see Motec-ECU )
VI : the other stuff , as : Carbon Fairings , Carbon Air-runners , Carbon Fender