p6x

Sorry.... Of course you are right. Mix up.... I meant Ethanol.

@GuzziMoto Agreed re the air density variations affecting combustion. Temperatures as well. Humidity. Everything comes into play. Ethylene addition affects it too. The V11 was produced up until 2005. All the recommendations made by Guzzi at that time did not factor Ethylene in gas, as it was not yet compulsory. From 2000, in Europe, the transition to leadless fuels started. If anything there wasn't a clear vision of fuel evolution. Even today, it is a bit of a mash up. 5% Ethanol, 10% Ethanol, up to 15% Ethanol, 85% Ethanol. Ethanol free...

@docc Look page 9 of this manual: https://www.thisoldtractor.com/mg_manuals/owners_manual_quota_1100.pdf Remember that Italy kept selling leaded gasoline quoted SP97 for Super 97 NO could mean "numero di ottano"; this Quota operator's manual looks like an excel spreadsheet converted to PDF. We get to the same conclusion: 95 NO is the minimum of Octanes for leadless fuels. Equates to 91 AKI. All the questions you have are valid, but where to get the answers?

@docc I contacted the owner of the 2000 Quota 1100ES which I am contemplating to buy, and he always ran it with 87 Octanes fuel (AKI) in Boise Idaho. Never observed anything strange with the engine. Quota's compression ratio is 9.5:1 I have read a few Petroleum Companies narratives on the subject and they tag high compression ratio from 10.0:1 I think we have beaten this topic to death. 91 (Ron+Mon/2) is most likely what the sticker meant. Even if they had meant RON, there is no fuel sold that meets that criteria in Europe using the RON method of Octane calculation. It starts at 95 RON.

Beaubier did not make it to race 2; PJJ had a better strategy this time. Although I thought Gagne had a late overtake planned in the last lap, but the back marker unfortunate encounter failed his attempt.

Since the discovery of that "91 RON" on the sticker, which I never actually properly digested, as I assumed it meant 91 as in US Premium that varies from 91 to 93 for Ethylene baptized gases, I am tempted to check 87. There is no way, on a motorbike, that you would not catch knocking right away. But I am convinced that 91 was meant to be labelled (RON+MON)/2 but somewhat, only RON appeared. Maybe the labeling machine did not have no + signs? there is simply no 91 RON that makes sense.

You may be correct too. So I am back to square one? 91RON on the sticker should read 91 ((RON/MON)/2) or AKI. In France, the minimum Octane number (RON) is 95 since 1991. That being said, Ethylene adds to the Octane. Could this be the explanation why a V11 runs fine on 87 AKI?

I agree. Whoever compiled the user's manual was most likely not someone understanding what they were typing. Here's where that 95 may have come from: In the manual shown by @MartyNZ the "95 No" is related to the prohibition to sell leaded gasoline with less than 95 Octanes. "Normale" means regular and had 84 to 86 Octanes, while the Super 98 to 100 Octanes with lead. I am guessing the manual is sort of saying that you have to use gas above 95 No, thus more than 86 Octanes. The manual may not have been updated properly for all the years. Could the manual be incorrect? 95 RM/min should be read 95 Ron minimum? but my V11 sticker clearly states 91 RON/min specific for 2004 too. The point 13 above states: Leaded Super kept being sold until Dec 31st 2001. Italian gas had some peculiarity as they had some pricing differences for specific uses. So they added a coloring agent to identify fraud....

To me the narrative is extremely important, including some of the personal information. That is what I meant. Like, why are you selling it, why did you purchase it in the first place...

The V11 can easily handle 10% Ethanol because in the US fuels can have between 10 and 15% Ethanol. There is the E85 which is meant to have 85% of Ethanol. This one is for those vehicles that are said to be "Flexfuel". From what I read, all gas vehicles manufactured in Europe at this moment use E85 by default. The cheapest option. The other option is E5, supposedly with 5% Ethanol. There seem to be no longer any distinction between regular, super, premium.

The words are important too, since the pictures do not tell everything...

It makes me wonder, how many of us have ran their V11 with Premium when it could have gotten away with regular all along.... However, higher compression ration should mean detonation retardant fuel... Why wouldn't 9.5:1 not work with 87 Octanes US, if it is required for 9.8:1? only because the piston is cooled by an additional oil spray for cooling?

Do you know the compression ratios? is there any difference? maybe the internal head combustion chambers have a difference geometry?

@MartyNZ Therefore, I have been running my V11 with Gas that wasn't required. Good catch!!! Who knows, maybe that will solve my 3000 fuel injection issue?

Left hand side of the swing arm. Doesn't the operator's manual says what gas you are supposed to run? I did not get one for my V11 2004, and the ones from the web, I can't assume they are correct for my millesime.

In Europe, in 2000 gas named Super, was short for "Supergrade". In 2000 Ethanol was not compulsory in gas. It came in 2005 in the US. Not sure about Europe. Today, for cars, you either have E5 or E85.

So 87 is all that we need then. I assumed the marking meant ((RON+MON)/2) since it was for an export vehicle for the USA. I was wrong.

Did not imply that you were suggesting anything either. I have ran the V11 with ethanol free gas, and now with 87 Octanes. I did not notice any difference with either. I was merely showing that Guzzi does recommend 91 minimum according to the USA way of computing. In France, the regular is named E-95, and is 95 Octanes using the European way of computing. What does Guzzi recommend there? In the 70's I did put regular in cars that required premium. I could run them smoothly, providing I would not be harsh on the gas pedal, and gear down before any climb. The engine would often keep running after I switched the ignition off, so you had to stall the car to shut it down. Gas in France always was a major source of indirect taxes. Still is. This time, with regular gas in the tank, the V11 did not feel any bit different than with premium, driving it my usual way. In 2004, Ethanol was not compulsory in the US, but was available as E10. In the US Ethanol mixed Gas became compulsory in 2005. Whatever Guzzi recommended at the time is based on data available then. Maybe E15 87 (R+M)/2) is good enough. I am not going to try E85 though...

@Joe I watched live yesterday. Beaubier got very lucky twice; I believe that will affect today's rides. I can see Gagné gagner (sorry, I could not resist;) both races today. PJJ waited too long to try that pass yesterday. Both bikes null themselves out, with sectors where both BMW and Yamaha are better than the other. Its down to the pilots then. I think Jack Gagné has the situation under control.

I would be interested, in a subjective sort of way, to find out why anyone chose a specific tire in particular. Furthermore, it seems that once one decided about it, one sticks to that choice. At least, this is what transpires from discussions I had over the years. Excepted in 70's, when the only tire of choice was the Dunlop K-81. I am the opposite. I try to install new brands and new models on all my vehicle, to test my ability to feel any difference. Recently, one of my Yokohama rear tire failed on my 911. The shop only had on tire brand that matched. "NITTO", made in the USA. I replaced both rear tires and my first finding is they make more noise than any of the other tires I ever installed. I am going to check them a bit more, and replace them sooner than later. I had Pirelli, Michelin, Yokohama, Bridgestones, and I could not tell which is better.

I looked at the add, and as ever, only two photos for a vintage motorcycle, minimum narrative too. 1000 km since 1986; 6500 EUR ask price.

The humidity is the real hurdle. I have been exposed to high temperatures before, in drier climates. This past Texas weather tops it all. I was in N'djamena Chad and temperatures close to the 50 degC were completely bearable compared to this. Everything seems to be excessive. When it rains here, it is torrential. It is not even a matter of rain clothes or good tires. Visibility is impaired by the water curtaining your visor. You need to stop. We are back down in the 90's, so I am planning a little outing today to order Motul oil for the V11. I have covered circa 6000 (10k km) miles already since March.

I have been following this guy, "46 Works", and if he was closer to me, I would not mind commissioning something. He has all the machinery and makes a lot of the parts himself. To be totally honest with you, I am no longer attracted to modern bikes. I am currently salivating about the purchase of a Quota 1100ES. I do like the Thruxton RS and the Triumph dealership where I spend time has one since 2020 which they don't seem to be able to sell. It is customized and looks pretty good. If I had the money, I would buy this one over the café. Not because of the looks, but because of practicality. https://www.rideironsupply.com/New-Inventory-2020-Triumph-Motorcycle-Scooter-Thruxton-RS-Jet-Black-Iron-Supply-Powersports-9184236?ref=list

The oil sump looks exactly the same on the Quota than on the V11; but it means nothing unless I can get both bikes side by side, and drop both pans to check. Of course, the blue prints would probably save the trouble.