Recent content by barryh

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    Explain dry-sump to me - does the sump auto level itself?

    That's correct , just keep the oil reservoir topped up. You don't mention the bike but with old dry sumped Brits, the problem was not too little oil in the sump but too much, as oil migrated down when the bike had been stood for a while. In those circumstances you wouldn't want to add more oil...
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    Towing w/ 4-Cylinder Turbo

    While it's correct to say drag is proportional to the square of the speed, the power required to overcome that drag is proportional to the cube of the speed and it's power that we are concerned with. So even more important to slow down.
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    Need help understanding torx types

    My car is full of E Torx fastners. While I had a good range of T Torx bits I had no E Torx sockets at all so I set about looking to buy some. What really confused me was even though both use the exact same form, the E Torx sizes do not correspond to the internal sizes. For example, an E8...
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    Honda Shadow Differential

    I don't think it's anything to do with copper alloys. Motorcycles are usually a spiral bevel drive so not hypoid. I've asked myself the same question - why GL5 if it's not a hypoid drive. My BMW is the same, it's spiral bevel but GL5 is recommended. Given GL5 has more of the same additives as...
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    One of Mercedes dumber ideas.

    My C class with a m271 engine is exactly the same. Cleanest oil change on any car I've ever had by far. It's a great design that allows you to everything from above.
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    Is there a reason why the back rows of flights are always unavailable?

    When I flew to Malta on holiday a month back with Easy Jet on an A320, I refused to pay extra for choosing standard seats and opted for seat allocation on check in. I reasoned that load planning would be part of the seat allocation algorithm and they might work from the centre outwards fore...
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    Oil ingress in BMW VVT sensor

    A similar sort of problem occurs with Mercedes M271 engine and some other Mercedes engines. To prevent the oil migrating via the cable from the cam shaft adjuster to the ECU, an oil stop cable is available to insert into the cable harness.
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    Modern Turbo Engine Reliability and Durability

    Modern engines with forced induction have so much more torque at very low revs that they are designed to cope, with beefed up crank bearings. While there are some exceptions I haven't the slightest concern that the bottom end in my car is going to wear out because it has forced induction...
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    Replacing a leaky natural gas valve

    One way to do a leak test on completion of any work on a gas system: Hook up a manometer, there is a test point on my system for this. Turn off all gas appliances so no gas is being consumed. Record the system gas pressure Isolate the system at the incoming isolation valve. If the pressure...
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    Oobleck fork oil.

    If I've understood what this Oobleck stuff does, in damper rod forks where the damping already rises exponentially with speed, a fluid that thickens under stress is the exact opposite of what is needed.
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    Fork oil differences besides viscosity?

    Viscosity index would seem important for fork oil unless you want damping force to change radically with temperature. That suggests to me a good synthetic oil. What is the viscosity index of ATF compared with fork oil ?
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    Alaska Airlines eliminates automated check-in/boarding pass kiosks

    That won't change because they will be the same people that arrive at a supermarket check out and are suddenly surprised they have to pay and go rummaging in bags to find the phone or credit card. Mines in my hand while I'm queuing.
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    Alaska Airlines eliminates automated check-in/boarding pass kiosks

    While it's convenient to use one I don't believe you should have to own a smart phone in order to fly, so the option of a paper boarding pass should remain available but you then need a printer at home if you don't want to queue at check in.. Even when I store boarding passes on my phone I still...
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    Alaska Airlines eliminates automated check-in/boarding pass kiosks

    I haven't queued up at a check in for years. Recently flew to Malta for a weeks holiday. Both outward and return check ins were done on line before we left home, also passport info confirmed. If you can manage with carry on bags, the whole thing becomes a breeze, Passports were electronically...
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    2 stroke engine oil and needed ignition timing

    I'm not sure if I have identified the 4 oil types with the graphs of maximum Top of the hill revs so tell me if I have interpreted this right. In simple terms: The use of oil 1 (mineral oil) requires more ignition advance for maximum power therefore it must slow the combustion burn rate...
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