Same here. The Supersprox rear sprockets for Ducati have a aluminium core and steel teeth which are riveted together. My version of the sprocket has holes whereas the one pictured by @Broduc64 has small screw heads in the same place. It appears these screws allow a coloured plate attached, see https://www.supersprox.com/ducati-sprockets/. In any case the 55mm nut would need to be removed, even to change the coloured plate.
As Steve says the tiny screw heads are for a coloured plate, yours is black as mine is but there are other colours you can order. Got mine from Calsport I think.
Yep on closer inspection, and I'll sit corrected, that particular one is the 3 metal jobby, ally carrier, steel gear teeth and as Steve stated, provision for a bling ring!
Nothing to feel daft about, there’s nothing quick release about it. I was thinking earlier from memory that your carrier looked like one of these, ( but obviously a 6 cush- drive version).
I understand it, I just dont abide by it I have never torqued up a wheel nut in xx years ( I am old so choose not to chuck a number in there lol) and never seen an issue. I have however been stuck at the side of the road, or even in the garage with a puncture and been unable to loosen a wheel nut to get the wheel repaired or replaced without resorting to air tools or scaff poles. I make sure the nuts are tight, if there is a lock ring like on the Duke Hatties, that is put that in place. On other bikes I put R clips or split pins in place, the nut cannot go anywhere, the wheel cant go anywhere. the bearings are still loaded but not sloppy. I know the nut will come off without me needing a trip to the chiropractor as an added bonus
There is a quick release system for the Ducati's. AFAM make them and have 520 and 525 pitch sprockets to fit their carriers (some Dukes are 530 standard pitch). The sprocket to fit that new carrier is different to the ones that fit the stock carrier. If you swap to 525 (or 520) though, you will need to change the whole chain set. (JT also do a quick release carrier but only have 520 pitch sprockets to fit it - probably best left to the race boys.) You still need the wheel and hub off to fit the new carrier, but after that's done once, the sprocket can be changed in situ. The replacement sprocket fits on the outside of the new carrier I have also seen some cheap copies on ali-express. I am not sure I want to trust those though
Result...ordered a cheap corded impact gun off of ebay. Initially dubious that it would loosen the sprocket side 55mm nut but after a few seconds of impact action it flew off. Very impressed. For reference I had tried a 3ft breaker bar plus a 3ft piece of scaffold pole standing on the rear break and giving it everything I had but it wouldn't budge.
Yep it's even called a Clarke in the manual. For the amount of times I'll be using it it's perfect. Although I was trying it out in a confined space and flicked the trigger to tighten accidentally when the nut was just off and came very close to cross threading the nut on the hub which would've been a very expensive mistake...
I tend to spin mine up before putting it on just to check, when putting it back on I wind it up by hand until it stops, then use my torque wrench, I don’t trust the gun to do it up.
Definitely looks the same as the Clarke gun which is probably from the same factory. Agree that this is purely for undoing nuts.