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  1. wturber

    Info on stripping a DNP Epoch freewheel

    It is now 2024 and I've worn out my DNP freewheel. I put something upwards of 12,000 - 15,000 miles on it. I stopped paying attention after 10,000 miles. At first I thought it was a worn chain. But It is pretty clearly not that. The chain is jumping unexpectedly when on the middle cogs. And as...
  2. wturber

    48V vs 72V

    Human beans are generally poor at risk assessment. The typical motorcyclist is no exception. The motorcycle fatality rate is about 25 times higher than that for cars when compared by miles travelled and 6 times when compared by registered vehicles. But given the very low rate for cars, it is a...
  3. wturber

    Are side kick stands made of steel available?

    It does look beefier. I hope it works out.
  4. wturber

    6 punctures in 16 months, help!

    Seems dangerous to me. If that tread slips off, bad things are likely to happen. I suppose you could stitch or rivet the sidewalls to hold it in place. But still, I'd be leery of having that outer belt slip.
  5. wturber

    6 punctures in 16 months, help!

    I ran mine only for the back tire and given the weight of my bike, I can't say any change in handling was a big deal. I think of my ebike as something like the station wagon of ebikes. Not elegant. No great handling. And I don't care about the rolling resistance. But generally functional for a...
  6. wturber

    6 punctures in 16 months, help!

    Shortly after retirement, I started doing volunteer work for an organization, "Bobs' Free Bikes" for similar reasons. We fix up donated bikes and give them to kids who need bikes. I'm not an orphan, but I figure every kid needs a bike and they too often don't have a parent or parents who can...
  7. wturber

    48V vs 72V

    You are basing your rebuttal on the idea that the bicycle is ridden responsibly. But the OP expressed that the 50 kph top speed he has/had "isn't enough" and that he'd be happy he would be if the 72v system would let himi ride at around 65 kph. He wants to ride his ebike at motorcycle speeds...
  8. wturber

    6 punctures in 16 months, help!

    Nothing so experimental. Mine is just a some variations on the standard DIY formula that uses liquid latex, ammonia, anti-freeze and corn starch. I happened to have had a flat on a ride and noticed how the bead on my tubed tire was stuck surprisingly firmly into the bead of the rim. That got...
  9. wturber

    6 punctures in 16 months, help!

    My most successful solution was to cut the bead off of an older tire and put that inside of the regular tire. I think someone here suggested doing this. I think I also had a rim strip in there as well. I only did that on the back because the back gets flats more often and is a bigger pain to...
  10. wturber

    Are side kick stands made of steel available?

    Yep. That's the one I use. It's been going strong for three years now. I broke anything else made of aluminum. My bike is quite heavy in the back with a direct drive motor, 1200wh of batteries and a MeanWell "charger" on board. I also frequently carry a lot of "cargo" on this bike as well. I...
  11. wturber

    gas price thread

    You need to make sure you read all the pertinent laws. There may have been something where any vehicle with more than X horsepower/watts, or Y engine displacement made it a motor vehicle and subject to further regulation. Most states have some kind of moped legislation since mopeds were a kinda...
  12. wturber

    gas price thread

    Right. Google maps for bikes tends to assume something around a 14MPH average speed. If your ebike can do 25MPH or more, you can probably count on a real world trip speed of 18-20MPH depending on lights etc. My 16 mile trip was about 50 minutes in and about 55 minutes going home - downhill vs...
  13. wturber

    My recumbent cargo bike

    Well, I've enjoyed following this thread and reading your accounts of long rides these many years. I've also really liked your bike design and how your repurposed both the bike and the battery. I'm not going to pretend to have good advice on whether you should continue or stop riding. That's...
  14. wturber

    gas price thread

    Depends on what you mean by "regulate." There are at least three cities in my state that have passed laws that "regulate" ebike usage. The "People for Bikes" system of three e-bike classes - their so-called model legislation has been largely adopted in most (37?) states...
  15. wturber

    gas price thread

    How far it can go depends on how fast I go. If I travel at a moderate pace of around 20 mph which equates to level 2 on the KT controller most of the time, I can go about 55 miles on a kWH (based on a 56 mile trip that I measured fairly carefully) or 17.87 Wh/m. Assuming I have 100% of the...
  16. wturber

    gas price thread

    I now use my bike or e-bike for essentially all in-town trips. The only exception is if I leave town I might do an in-town side trip on the way home. (In town = Fountains Hills. Small town on the outskirts of Phoenix Metro area. The e-bike makes this more practical by reducing uphill effort...
  17. wturber

    Freewheel for motor output?

    This may be useless trivia, but it is fairly simple process to change the ratchet direction on an ACS Freewheel by spending a little bit of time with a Dremel type rotary tool and a long thin grinding rod. Of course, you will have to deal somehow with the ratchet forces wanting to unthread the...
  18. wturber

    Used Jump Bafang Hub for Budget Build?

    Alternatively, reset the LCD odometer and ride some route that you can easily check on Google maps. If the odometer distance is too short, the speed is under-reported. If too long, then over-reported. The odometer should be calculated from the same data as the speedometer. The longer and simpler...
  19. wturber

    See a lot of inexpensive brushless hub motors nowadays (hallomotor etc) are these any good?

    Sorry for not answering. I've been off most forums and social media. FWIW, there was a simple integrated connector. Probably not the one you wanted. But it was a pretty easy one connector affair. The difficulty in removing the rear wheel has more to do with the torque arms and rack on my bike...
  20. wturber

    Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

    Sure. But at 2-3 times the price of ordinary PLA, it isn't exactly exotic. And it is only about 50% more expensive than the Carbon Fiber PETG that was initially used. The problem with these things is the cost of experimenting. But if Grin is going to be using 3D printing more and is willing to...
  21. wturber

    Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

    Here's a better video with testing of Polymaker's Polymide CoPA filament. I get the feeling that Stefan and Justin would get along with each other famously. Q_i-57SEGlo
  22. wturber

    Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

    I'd make sure that the hygroscopic nature of nylon doesn't bite you when using it on a boat. I'm sure the issue varies depending on the particular nylon blend. Just make sure you investigate/test before going all in. But yeah - nylon is tough so might be good. The big issue with PC is that it...
  23. wturber

    Motor cover split around freewheel while pedaling.

    That is you best bet. I'd wager that your epoxy scheme won't work. I doubt there is enough surface area to bond to. And the only epoxy likely to hold would be something fairly expensive like 3M DP 420. Please note in this video that the bonded area is stressed in sheer and there is a lot of...
  24. wturber

    Farewell Segway

    Perhaps in some areas. But what I saw was the opposite. The Segway was often given privilege over other similar transportation devices that have different wheel arrangements. Very specific laws granting exceptions to Segways were enacted in some (many?) cities.
  25. wturber

    Legal classification of my custom build - Quadricycle? ATV? Wheelchair? All?

    Maybe. But with four wheels I wouldn't count on it. I think most LEO would immediately recognize that as "not a bike." Maybe a handicap placard prominently placed would dissuade them from bothering a rider though?
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