Search found 77 matches
- Wed Mar 27, 2024 8:35 am
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
The detail on my estimate of fuel savings by going to 87 octane. I've rounded the numbers to keep the math easier... I keep close records of our karting (and other spending). Last year, we spent $350 on kart fuel. This was between our two Rotax karts, covering 9 races and many more T&T and coach...
- Fri Mar 22, 2024 11:32 am
- Forum: Pit Talk
- Topic: Alternate Race Formats, Awards and Track Records
- Replies: 2
- Views: 191
Re: Alternate Race Formats, Awards and Track Records
My two cents - if it's worth that much... On trophies for the podium sitter each race - They seem not to be very expensive, so I suspect that savings for eliminating them would not be significant. I suspect the younger races may appreciate them more than the older folks. There have been a few occasi...
- Sun Mar 17, 2024 7:33 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
- Sat Mar 16, 2024 8:48 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
Carson and I were at the track today and I stopped at the Co-op to get some gas to test. It had ethanol in it.
- Mon Mar 04, 2024 2:00 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
I’ve found the ratio for manual jetting. Pure ethanol wants 1.6 times more air than gasoline for optimal combustion. At a 10% blend, that means we should be going with jetting 6% bigger than with pure gasoline. We’ve been focusing on the main jet - but this would also impact the needle jet - any ide...
- Sat Mar 02, 2024 12:09 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
Sites won't go back and forth - aside from some disruption that forces them away from their typical supply point. With federal and province carbon & cap and trade regs, use of non-ethanol gasoline is much more expensive for suppliers. This is why things are moving to E15. Fuel producers/importe...
- Sat Mar 02, 2024 12:02 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
Co-op was the last hold-out with non-ethanol gasoline and started converting their sites in late 2022. It's possible that where you sourced your sample from had not yet converted. Sites won't go back and forth - aside from some disruption that forces them away from their typical supply point. With f...
- Sat Mar 02, 2024 10:01 am
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
I hadn’t factored that the club moved to ethanol gasoline in 2023 into my jet choice ‘algorithm’. I’ll be sure to adjust this season.
Not that many of us follow the Rotax app recommendations, but I wonder what type of fuel they assume in their calculations.
Not that many of us follow the Rotax app recommendations, but I wonder what type of fuel they assume in their calculations.
- Fri Mar 01, 2024 10:44 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
Alberta’s not on the horizon for E15 right now. If/when it happens in any jurisdiction, it won’t go back again.
- Fri Mar 01, 2024 6:07 pm
- Forum: Pit Talk
- Topic: Fuel talk - octane, ethanol, etc.
- Replies: 23
- Views: 1970
Re: Fuel talk - octane, ethanol, etc.
Jack, That is my understanding. Hydrogen atoms in any fuel are what burns. A computer-controlled engine is going to adjust things to hit a certain air/fuel (hydrogen/oxygen) ratio. Ethanol and other alcohols contains oxygen atoms in their molecules, so the computer will automatically increase the am...