Power in Flux

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Type: Posts; User: Michael Moore

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  1. If you've got some Teflon on hand, by all means...

    If you've got some Teflon on hand, by all means give it a try and monitor it. With intermittent contact between it and the chain cold flow may not be an issue.
    ...
  2. Stevo, teflon "cold flows" under pressure. A...

    Stevo, teflon "cold flows" under pressure. A strip of UHMW-PE would probably be a better choice and it is easy to find.



    cheers,
    Michael
  3. 530 needs 1/8" turned off one face to turn it...

    530 needs 1/8" turned off one face to turn it into 520. That doesn't touch the hardened surface on the teeth where the rollers ride and would be much easier to do than making sprockets.

    An...
  4. A bit of Googling found ANSI 50 taper lock...

    A bit of Googling found ANSI 50 taper lock sprockets starting at 15T

    https://www.rainbowprecisionproducts.com/sprocket-ansi50#1

    and they use these bushings
    ...
  5. Sprockets aren't rocket science, you've just got...

    Sprockets aren't rocket science, you've just got to find a place willing to make them at a price and quantity you can afford. For big production numbers sprockets are hobbed or shaped, but I've seen...
  6. Can't you buy some sort of adapter made for the...

    Can't you buy some sort of adapter made for the shaft, bore the center out of a sprocket and weld the two together? I've retoothed rear aluminum sprockets by turning off the teeth and boring out the...
  7. 520 is good enough for Superbikes and probably...

    520 is good enough for Superbikes and probably MotoGP as well, so go with that instead of the wider chains. Of course, that presumes you get a good 520 chain, Regina actually makes 6 different 520...
  8. If you look at strength/density a lot of...

    If you look at strength/density a lot of materials come out pretty similar. Wood isn't dense, so you need a lot more of it to have similar strength to steel/aluminum etc, but then you also have...
  9. With a rear suspension set up like a modern dirt...

    With a rear suspension set up like a modern dirt bike (or even many modern street bikes) there is no slack-tight-slack because the axle/pivot/counter shaft are never in line. Instead, the high pivot...
  10. There are plenty of automatic chain tensioners on...

    There are plenty of automatic chain tensioners on motorcycles, but most of them are on cam and primary chains. However, chain tensioners on drive chains are not uncommon on dirt bikes, especially...
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    Ted, I got a deal from a friend on the sander. ...

    Ted, I got a deal from a friend on the sander. He'd already bought all the replacement wheels it needed and I think he let me have it for $600, a price which I didn't have to think twice about...
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    That small pneumatic grinder with Roloc discs is...

    That small pneumatic grinder with Roloc discs is great for deburring. It was my favorite tool for a while when I first bought one.

    I've got a Wilton "Square Wheel" 2" belt grinder which is great...
  13. Zero and Energica in the 09/2018 Roadracing World

    The 09/2018 issue of Roadracing World showed up today. It has a 3 page "quick look" at the Zero SR including time at Laguna Seca on a modified bike, a page on the Energica MotoE race bike and a full...
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    Stevo, the front end is a girder fork. They can...

    Stevo, the front end is a girder fork. They can be made to work well if the details are attended to (and with a good modern damper instead of the friction dampers of a century ago). The links on...
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    There's a very large amount of anti-squat force...

    There's a very large amount of anti-squat force in that rear suspension design. This looks like another "art" or "made for collectors" vehicle to me.

    cheers,
    Michael
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    Contrary to a couple of comments above neither...

    Contrary to a couple of comments above neither the Bimota Tesi nor the Britten had a leading link fork. The Tesi uses hub center steering and the Britten is a variant of the Hossack/Fior front...
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    How much lean angle is available with the...

    How much lean angle is available with the suspension bottomed at both ends? Will the battery box corners start plowing furrows as the suspension settles?
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    In case you aren't already aware of it, your...

    In case you aren't already aware of it, your rear-suspension mounted motor (as used on countless scooters) will have the same squat/anti-squat effects as a conventional (non-floating rear gear case)...
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    That is one of the nicest CNC router tables that...

    That is one of the nicest CNC router tables that I've seen, it looks very sensibly designed. Many of the DIY tables are very "shade tree" in design and construction.

    I made some copies of a...
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    A new style of motor

    http://www.machinedesign.com/motion-control/axial-flux-motors-and-generators-shrink-size-weight

    It mentions motorcycles and uses a BMW i3 motor in a comparison with the new design. It sounds very...
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    Ted, it seems like I hit a hot button. I did...

    Ted, it seems like I hit a hot button. I did read through the thread, I always do before commenting.

    If a transmission is needed (which may or may not be the case) the world has a pretty good...
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    Ted, I've got a Honda CTX700 with DCT. There is...

    Ted, I've got a Honda CTX700 with DCT. There is no clutch lever (though dual clutches) and no foot shift lever. I LIKE the automatic and I expect my e-project will be direct drive.

    Are you...
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    An acquaintance who is a very fast MXer had a...

    An acquaintance who is a very fast MXer had a test ride on an Alta and he gave it a very positive review and liked it a lot.

    Yes, next-gen batteries+next-gen motors/controllers will probably put...
  24. I think most modern EFI throttle bodies have a...

    I think most modern EFI throttle bodies have a throttle position sensor (PTS) on them (as do some modern carbs that run power jets/power valves or use the extra data to vary the ignition map) often...
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    A friend told me of some simulations he did for a...

    A friend told me of some simulations he did for a clients e-scooter project some years ago.

    This was a 45 mph top speed, 770 pound total weight with rider, lead acid battery, 10.2 kW continuous...
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