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Old 14-10-18, 07:26 AM   #1
Red ones
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Default Bike expenditure app - Roadtrip

I've been using Roadtrip on my iPhone to track bike expenditure for the last 10 years and have only just found a whole load of functions I didn't know existed.

At long last I have a way of doing the test to see if Super Unleaded is worth buying for improving consumption.

I'm going to do 1,000 running the comparison. Might just post the findings one day.
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Old 14-10-18, 11:09 AM   #2
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Default Re: Bike expenditure app - Roadtrip

I'm a fuel snob with my bike, and aim to use either Shell, BP or Esso super whenever I can. Largely because of the extra detergent additives that those three have, but there's no real science or evidence behind my choice
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Old 14-10-18, 11:18 AM   #3
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Default Re: Bike expenditure app - Roadtrip

Using the Fuelly site, my MPG results always seem better after filling up with premium fuel. Not an exact science though as it may be partly coincidence. If I work out the extra cost vs MPG the extra cost of the fuel per litre always seems to pay for itself.
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Old 14-10-18, 11:40 AM   #4
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Default Re: Bike expenditure app - Roadtrip

Quote:
Originally Posted by Adam Ef View Post
Using the Fuelly site, my MPG results always seem better after filling up with premium fuel. Not an exact science though as it may be partly coincidence. If I work out the extra cost vs MPG the extra cost of the fuel per litre always seems to pay for itself.
This is what I found on cars with an ECU smart enough to adjust spark timing, modern car ECU will back off ( retard ) timing if knock detector gets triggered, this can happen with lower octane, and the later spark means less power, so more throttle for same speed. Do not know if bikes have knock sensors though.
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Old 14-10-18, 12:35 PM   #5
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Default Re: Bike expenditure app - Roadtrip

What no one seems to relate back is how much performance improves. As the fuel is 4% more expensive at the moment I want to see at least that as a performance improvement in mpg. Otherwise it's a waste of money.
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Old 14-10-18, 01:54 PM   #6
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Default Re: Bike expenditure app - Roadtrip

The cars I have tried it in certainly seemed perkier, pulled away better and went up hills better. Unfortunately he truth was you can't have your cake and eat it, you can either enjoy the extra oommph or get better MPG.

I tried V Power in a carbed bike and it actually ran worse ( but maybe 'V' power was made for V twins LOL ), maybe the ECU was not smart enough to make use of higher octane, to be honest have not tried higher octane in SV AL7 as ( like Seeker ) I am getting amazing MPG anyway and plenty power for me on normal 95.

I did a blind trial on my wifes car, we had identical cars and when I drove hers it always seemed less willing and more sluggish than mine, she was in the habit of using Sainsbury's or Tesco fuel because of the 5p a litre vouchers she got with shopping. I filled her car up with V power one day and didn't tell her. A few days later she asked me if I had tuned her car as she had noticed it drove better, I told her what I had done and she never used supermarket fuel after, but used normal 95 Esso, BP or Shell and seemed happy. This was about 10 years ago, don't know if SM fuel has changed since then.
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