V4R race trim top mods!

roadracerx said:
Did some testing today at a very toasty Chuckwalla, high of 98F, on the V4R with the new (2020) Pirelli Superbike slick.

The front tire is a full 5 mm wider and 3 mm taller radius than the 120/70 Diablo Superbike Slick and the rear 200/65 is the same width but 5 mm taller radius than the 200/60 of the same name.

I have raced on these tires before the coronavirus shut down and REALLY liked the front but had not spent enough time on them yet to have a good setup...

Math is never wrong but sometimes a tweak is needed because you feel something....what I noticed today on the SC1 front and SC0 rear is that I could not be as precise and I was just a little off the apex in a couple of corners with the V4R fork at stock ride height, shock length at 315 mm.

Tire pressure hot off warmers at 34 front, 24 rear I altered the front fork ride height from 7 mm of tube above top cap to 9 mm so the fork is shorter. This solved the problem, I didn't have to pull the bike down to the apex and I wasn't missing the apexes; times in the 1:53-54 range with traffic on used tires....this bike is FAST, got it up to almost 145 mph on both straights!
Click to expand...


we must saw each other in passing yesterday, most likely you passing me....lol

now I know which bike is yours!
 
roadracerx said:
The front tire is a full 5 mm wider and 3 mm taller radius than the 120/70 Diablo Superbike Slick and the rear 200/65 is the same width but 5 mm taller radius than the 200/60 of the same name.
Click to expand...

Do you mean diameter or is radius correct?
 
TsaiCo said:
was there some oil in the end of back straightaway? Not sure why few crashed over there?
Click to expand...

No, I have no idea what was wrong or why so many crashes but I'd go out and 3 times in a row I would be on my first hot lap and RED FLAG! I don't know why people think that just because you are riding on track that you should push to max. It doesn't end well and wastes other people's time.
 
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Do any of you guys have a matrix or reference chart from Pirelli listing all their tires with specs such as diameter, width, etc? Thanks,
 
My favourite mod, isn't really a mod, but a tool.

It's a ride height tool.

I know you can measure from swingarm pivot to the axle, and also from the axle to a fixed point on your bike, but I just love the accuracy of a ride height tool!
 

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Hey, roardracerx, I changed the schocklength to 312mm (2 turns out), was at 310mm. But I found it strange that I already saw the visible groove they make in the threat so you know you reached maximum lenght. So this means that 312mm is the maximum length I can set, is this normal for a new bought DU468? Setup data says 310mm and +4/-2mm. I have now 7 threads showing. I read here often schocklenght of 315mm. Am I missing something? Do you have an idea why this is? O yes, ride height did go up with 5mm, so should be good now.
Ducati says rake: 24.5° and trail: 100mm. Do you have tools to check this, are these numbers accurate?
 

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