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  1. Mr. Coffee

    E-Gravel Bike…Looking for Advice

    Most cyclists and most bikes will be pretty much defeated by any grade over 25 percent, even for fairly short distances. I'd also point out that very long sustained grades that are "easy" in short doses knock the stuffing out of most cyclists. One route I sometimes ride near me climbs over...
  2. Mr. Coffee

    From Concept to Prototype: Ultra-Light Ebike Kit for Road Bikes Now in Development!

    The purpose of a torque arm is to keep the axle from rotating out of the dropout. With a through axle you don't have a dropout. You have a threaded hole the axle goes into. And it is threaded so that even friction from the wheel rotating in a forward direction will tighten the axle, not...
  3. Mr. Coffee

    E-Gravel Bike…Looking for Advice

    My short answer is if you'd find it scary to ride down it is probably pretty steep. Sustained climbs of over 1000 feet per mile (so around a twenty percent grade) are pretty tough even on e-bikes that are the stoutest climbers. Any climb of that grade longer than a few hundred yards is going...
  4. Mr. Coffee

    Anybody tried Clik tire valves?

    This is my own opinion. I think there is zero justification for running with tubes (outside of an emergency when you ripped your tire and are limping home) on low-pressure high-volume tires. So generally on any tire of three inches or larger tubes make zero sense.
  5. Mr. Coffee

    From Concept to Prototype: Ultra-Light Ebike Kit for Road Bikes Now in Development!

    I suspect you wouldn't need a torque arm if your conversion has a through axle. And if you did it would look really different than conventional torque arms. Also, it is 2025 not 1975 and the way you attach a wheel to a bicycle is with a through axle.
  6. Mr. Coffee

    Anybody tried Clik tire valves?

    I'd watch Schwalbe's web site. Where last I read clik valve tubes were "coming soon". My own feeling is the really huge win with Clik valves is for tubeless and since most Clik pumpheads will still inflate Presta valves you can get buy with a Presta valve tube to limp home when your tubeless...
  7. Mr. Coffee

    The Future of eBikes: How Fast is Too Fast?

    That is a completely idiotic straw man argument and doesn't even appear relevant to our discussion here. And a lot of countries out there are doing far better about motor vehicle safety than the Untied States. And doing it without banning cars.
  8. Mr. Coffee

    The Future of eBikes: How Fast is Too Fast?

    Yeah, but you will almost certainly cause less harm with an acoustic bicycle riding an average speed of 10mph versus an electric motorcycle going 50mph.
  9. Mr. Coffee

    Anybody tried Clik tire valves?

    I just bought one of those. Works fine on presta valves. I found a little pill bottle that fits more-or-less perfectly inside the pump and I carry spare valve cores, valve caps, and a presta-to-shrader converter there. The 40cc version is adequate for 650b by 46mm tires. But probably not for...
  10. Mr. Coffee

    E-Gravel Bike…Looking for Advice

    A decent trailer is a pretty efficient way to haul stuff, so up hills even at 80 years of age shouldn't be a problem if the rider can easily make it up those hills without the trailer. And "rough terrain" is a pretty relative and subjective thing. From my standpoint what this guy is riding...
  11. Mr. Coffee

    E-Gravel Bike…Looking for Advice

    I don't know where some of you get your information on bike trailers. If you get a trailer that connects to the axle and you use a special through axle you can pull a trailer with a substantial amount of crap in it with a very light acoustic bike. Like this expensive Burley Coho XC...
  12. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    I resent your insinuation. I am not a liberal.
  13. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    There have been videos of Donald Trump doing weird crap for forty years. It was obvious even in the 1980s that there was something seriously wrong with the guy. A lot of it was entertaining if you watched it on teevee from a safe distance. But no person in their right mind would want to do...
  14. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    That's the heart of it right there. If you believe you live in a savage and brutish world there is no room for compassion, kindness, and decency and all of those admirable qualities are just weaknesses that make you a target. What I do not understand is that some people think the "solution" is...
  15. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    Some of us think the term "illegal" in this context is intentionally dehumanizing and is used to justify any foul act done to them. You can believe in rule of law and agree that immigration here is messed up and needs to be fixed and still treat the people in the mess like humans.
  16. Mr. Coffee

    Pinion Motor.Gearbox.Unit (MGU)

    Well forgive me for being confused because what the tariffs actually are seem to be changing every day. I thought Taiwan was back to ten percent. Also, Taiwan is now mostly a high-tech manufacturer and not a mass producer of low-cost consumer goods where automated production is difficult and...
  17. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    Again how do you export candy stripers? The vast majority of "services trade" is royalties and licensing fees. Followed by consulting fees. In theory a world where remote work was pretty universal would allow things like legal services and accounting and engineering to be traded as well, but...
  18. Mr. Coffee

    Pinion Motor.Gearbox.Unit (MGU)

    I think people need to realize there is a difference between mainland China and Taiwan.
  19. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    When you think "services" you are thinking about flipping burgers. I'm thinking about engineering and legal and financial services. You can't really export cheeseburgers, but you can export a franchise selling cheeseburgers and the royalties and franchise payments flow back to the US.
  20. Mr. Coffee

    With 125% tariffs, will the e-bike market die?

    Great. Explain to me how the US Government's bull-in-a-china-shop antics over the last four months solve those problems. And explain to me how solving this problem is worth the risk driving the US economy in a major recession.
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