Chain and sprockets

DV4 · Sep 25, 2023

Unless you are lapping within 10 seconds of the class lap record, its not going to make one bit of difference, but changing gearing can be necessary at times on track if you re serious so just do it

spooky · Sep 25, 2023

SuperDomestique said:
My bad, I’m not Benoit Blanc and looking for obscure clues in posts. That 700g weight saving is probably equivalent to the .... you’d take that morning after a latte

Probably less, although I don’t drink lattes. Then again, the .... will return, whereas the weight loss from the sprocket won’t.

Honestly, it wasn’t an obscure clue - it was explicitly stated. I said in a further post that my bike is 520 and still I was told it’s 525. No need to bang on about it though - we’re all guilty of rushing replies and missing stuff in the original post from time to time.

andyb · Sep 25, 2023

SuperDomestique said:
My bad, I’m not Benoit Blanc and looking for obscure clues in posts. That 700g weight saving is probably equivalent to the .... you’d take that morning after a latte

by all means bring your talent to BRNO .. show me your stuff........er, I mean other peoples stuff you have appropriated..

spooky · Sep 25, 2023

Paul G said:
Unless you are lapping within 10 seconds of the class lap record, its not going to make one bit of difference, but changing gearing can be necessary at times on track if you re serious so just do it

Of course it’s not going to make a difference to my lap times, but there’s no reason not to go for something lighter when changing these things other than longevity. At no point did I suggest that the reason for changing was to reduce lap times.

If changing gearing becomes necessary then I see the advantage for one person on his own being able to change sprockets more easily. It’s certainly something to consider.

SuperDomestique · Sep 25, 2023

spooky said:
At no point did I suggest that the reason for changing was to reduce lap times.

THE reason to switch to a quick change sprocket IS to chase lap times.

Money would be better spent on more, tires, or if you’re that concerned about weight a gym membership

spooky · Sep 25, 2023

As an aside @andyb , Brno (which I love - fabulous track) is now under new ownership (Karel Abraham’s dad was the previous owner) and in a couple of years the new owner intends to invest in the circuit with the goal of getting MotoGP back.

andyb · Sep 25, 2023

Paul G said:
Unless you are lapping within 10 seconds of the class lap record, its not going to make one bit of difference, but changing gearing can be necessary at times on track if you re serious so just do it

this is just garbage, none of us are any good or we wouldn't be
1 banging on on a Mickey Mouse forum
2 paying for track time and indeed being on a Mickey Mouse Trackday.

it is however interesting to change stuff and change stuff for the better.. although the weight saving in this instance isn't the most important factor like changing an exhaust that does save weight..

andyb · Sep 25, 2023

spooky said:
As an aside @andyb , Brno (which I love - fabulous track) is now under new ownership (Karel Abraham’s dad was the previous owner) and in a couple of years the new owner intends to invest in the circuit with the goal of getting MotoGP back.

I heard it may well become a housing estate?

I agree its a fantastic world renowned circuit steeped in history.....obviously its no chuckwalla.....

spooky · Sep 25, 2023

SuperDomestique said:
THE reason to switch to a quick change sprocket IS to chase lap times.

Money would be better spent on more, tires, or if you’re that concerned about weight a gym membership

Good grief. I wasn’t originally talking about switching to QC - I had actually said that I didn’t intend to use a QC setup. “I have no intention of changing from standard gearing” was stated in my first post.

Either you didn’t read the original post or you just want an argument. You have zero idea of my height and weight, yet you make comments about gym membership… I find that odd (not incorrect, just odd).

Spending money isn’t a zero-sum game - tyres will be bought on a regular basis, I already have equipment suitable for working on myself, I regularly get tuition at track, which I think is invaluable… I don’t have to choose between sprockets or tyres…

SuperDomestique · Sep 25, 2023

andyb said:
by all means bring your talent to BRNO .. show me your stuff........er, I mean other peoples stuff you have appropriated..

No you come to Laguna Seca, inspector…

spooky · Sep 25, 2023

andyb said:
this is just garbage, none of us are any good or we wouldn't be
1 banging on on a Mickey Mouse forum
2 paying for track time and indeed being on a Mickey Mouse Trackday.

it is however interesting to change stuff and change stuff for the better.. although the weight saving in this instance isn't the most important factor like changing an exhaust that does save weight..

Totally agree.

My main reason for changing the exhaust was the weight saving (it’s not like the bike needed more power).

Changing something that spins that fast should have more impact than the same static weight loss, but it’s not something that will make me faster. As I said earlier, if I’m changing then why wouldn’t I get the best I can and save weight. I find it interesting and it’s also useful to work on the bike - not something I’d ever done before. The bike’s only used on track, I love it to bits and it’s my (new and only) hobby.

spooky · Sep 25, 2023

SuperDomestique said:
No you come to Laguna Seca, inspector…

Oh come on, make the effort. Besides, there are far more wonderful tracks over here.

andyb · Sep 25, 2023

SuperDomestique said:
No you come to Laguna Seca, inspector…

you know I nearly did but the timing was wrong, ....my buddies are there in November though on a no noise limited 3 day event

andyb · Sep 25, 2023

spooky said:
Totally agree.

Changing something that spins that fast should have more impact than the same static weight loss, but it’s not something that will make me faster. As I said earlier, if I’m changing then why wouldn’t I get the best I can and save weight. I find it interesting and it’s also useful to work on the bike - not something I’d ever done before. The bike’s only used on track, I love it to bits and it’s my (new and only) hobby.

the thing is over the years pretty much all Ducatis have been tall geared and just about everyone changes the gearing to suit their purpose. In Spookys case a change of gearing may well help him improve his track riding and a by product of this would be an improved lap time so he sees the personal development.

spooky · Sep 25, 2023

andyb said:
the thing is over the years pretty much all Ducatis have been tall geared and just about everyone changes the gearing to suit their purpose. In Spookys case a change of gearing may well help him improve his track riding and a by product of this would be an improved lap time so he sees the personal development.

That’s interesting. First gear certainly has some range to it. As you’ve mentioned before though, such changes can affect more than just the gearing. Something to look into and maybe QC would be worth going for (and it would save money on sprockets as aluminium ones are going to require changing more often and QC ones are cheaper). Food for thought.

andyb · Sep 25, 2023

on track mileage you won't be changing due to wear very often but its cheap enough to change to suit a purpose.

SuperDomestique · Sep 25, 2023

spooky said:
Are there any reasons for choosing their quick-change setup over the normal setup?

spooky said:
Losing weight is something I am always interested in (other than myself of course).

spooky said:
That’s interesting. First gear certainly has some range to it. As you’ve mentioned before though, such changes can affect more than just the gearing. Something to look into and maybe QC would be worth going for (and it would save money on sprockets as aluminium ones are going to require changing more often and QC ones are cheaper). Food for thought.

I’m so confused. I thought you said you aren’t considering QC… And you inferred that you were overweight in your previous posts.

Also, per the Ducati workshop manual a final drive lifespan should be around 20k km (12k mi) with proper maintenance.

Chain elongation per manual is

SuperDomestique · Sep 25, 2023

And here’s the final drive ratios that the bike will adapt to. And then you’ll have to either have Deussen or your dealer reset the drivetrain “adaptives” or you’ll run into QS/electronics problems

Jolly Roger V4 · Sep 25, 2023

spooky said:
Oh come on, make the effort. Besides, there are far more wonderful tracks over here.

I must agree, Laguna Seca is a bit of a tosser track I have determined. Latte free zone for sure.

andyb · Sep 25, 2023

SuperDomestique said:
And here’s the final drive ratios that the bike will adapt to. And then you’ll have to either have Deussen or your dealer reset the drivetrain “adaptives” or you’ll run into QS/electronics problems

View attachment 51505

most that change their sprockets and from what I see its more often than not........ and of course adhere to the recalibration procedure including me don't have any issues.... on the other hand if you are above the recalibration procedure then you reap what you sow.

Chain and sprockets

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