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  1. D

    The wheel-building spoke-lacing thread, post your tips

    AH THANKS guy,... knew youd be of some help here. But let me clarify my concerns a bit more. A motorcycle rim HAS been considered, but they are typically 40h, making it rather incompatible with a 36h hub. AND, unless hub is specifically a 40h motorcycle hub, I'm not terribly thrilled with...
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    The wheel-building spoke-lacing thread, post your tips

    Glad to see a bit more life in this,... AND, looking for a bit of input and opinion. NEW BUILD,... full custom framed, traditional motorcycle "chopper" style, in other words, typical stretched-fork and capable of carrying two,... ADULT passenger and rider. This means a rear carrying capacity...
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    Poor Man's RV

    I'm a poor single retiree, and now live year-around in my "34' rolling upstairs apartment", with no other income than my meager SS retirement benefits. I DO NOT travel much as my RV consumes about a gal of gas for every 6mi traveled!!! AND, this is an upgrade from my previous retirement...
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    Road trippin' with an eBike

    I live alone year around in a 34' "upstairs apartment on wheels"!!! Not something to run to store with, so I depend on my e-bike for a lot. And, I have some choices in power with alternatives and backups too! USUALLY,... I'm attached! A "shoreline" to get some AC power for fridge, microwave...
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    EBike Tire Speed Rating

    Personally,.... I use a general "rule of thumb", depending on tire size. Up to 2" width,.... inflate pretty solid, tire should not deform or flatten any more than that barely noticed when bouncing very heavily on seat of stationary bike. 2'-3' width,... inflate very firm, tire shouldn't deform...
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    EBike Tire Speed Rating

    There is really NO universally accepted and established testing standards in such regard as there is in say, an established ISO, SAE, DOT, etc. That "maximum" PSI rating is that which limits and minimizes tire deformation under max expected load conditions, as designed, established, and tested...
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    EBike Tire Speed Rating

    Dang! Jus noticed this! Yes,... 50psi, about what I kinda expected. Remember too, that minimum is still relative to load!!! Your tires shouldn't typically "flex" much under load!!! Typically means other than heavy "fats" and such. In general, most flexing contributes to failures. That "minimum"...
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    EBike Tire Speed Rating

    Ahhh,... you noted SEVERAL specifics of my interest. #1-REAR tire has major wear over front, NOT due to abrasive skids. Nothing really unusual, but demonstrates a typical distribution of your total weight from front to rear. All things equal,.... the rear will wear faster with greater weight...
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    EBike Tire Speed Rating

    My next build will be wound to run that 25-30mph most efficiently, because that's about my most comfortable over long distance continuous speed. Currently wound to 40mph and rarely EVER run that. You noted in your OP that your "stock" tires lasted only about 200mi and that "..they were crap"...
  10. D

    EBike Tire Speed Rating

    It is, somewhat. It's more a "nominal" speed rating, as its obvious that 25kph on a 20" tire has more rpms than a 29er at 25kph!!! But it's also safer for mfgs to rate FAR below maximum capabilities!!! And many here will attest that a 1000w rated motor can easily be driven at two or three times...
  11. D

    EBike Tire Speed Rating

    Ugh! Tires,.... AGAIN! For something so relied upon, I DO wish folks TRULY understood the technology and industry of tires!!! "EBike Tire Speed Rating",... the common term that defines an "e-bike tire" as unique. Yet it has NOTHING in common with the speed ratings of motor vehicle tires,... but...
  12. D

    PSA: dont underspec your strips

    A relatively large, soft, semi-liquid contact might actually carry a greater current than those tiny poorly bonded welded contacts depicted in the photos of the OP. As I noted previously, the technology available today in regards to soldering, is MUCH improved over my lifetime. While coppers...
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    PSA: dont underspec your strips

    This is very much what I intend to do in assembling an unusually shaped custom job. I'll also be testing a bit on some scrap cells to determine best flux, solder, and tinning coats to minimize that "brutality". AND, I'll tin my copper before applying, to minimize heated contact time between...
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    Ebike prices expected to rise? 25% tariffs.

    Then I would lose on much different principles. In various industries of services and products, I've always found the "truly elite rich" to be my favorite and easiest customers,... no mention of cost, price or value, "jus do it!" Those of restricted budgets never questioned cost, price or value...
  15. D

    Ebike prices expected to rise? 25% tariffs.

    I'd bet that you WOULD pay that $5000,..... IF, you had an income that allowed you to!!! Nobody wants something cheap, if they can afford otherwise. And many would pay extra for convenience too,.... IF, they can afford to do so. Patriotism is relative to home and family. Even if you personally...
  16. D

    Conversion to electric motorcycle

    Some older vehicles (mostly motorcycles) had engine number established VINs,... this was before a more unified VIN system was established in early 80's. These early VINs were typically manufacture serial numbers. Some vehicle manufactures had stamped same matching serial numbers on both frame...
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    Conversion to electric motorcycle

    It's been more than a few decades, since I last built a full custom that required a "builders title". These weren't common then either, but far easier than obtaining all you need today! My best suggestion,... build (RE-build) around an established and titled base. This ONLY establishes titled...
  18. D

    The ultimate torque arm (For <2kW and standard axles)?

    No motor in this pic,... jus a good closeup that depicts my exact dropout plate.
  19. D

    Need opinions on custom build project

    After a year or so of various design and detail considerations, I'm about to begin a custom build and am now in need some input regarding some remaining questionable details. Strictly a street cruiser, the large heavy frame will be of a simple open design in a themed classic "chopper" style...
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    The ultimate torque arm (For <2kW and standard axles)?

    Interesting concept, but the most basic simplicity is often the key to the best designs of durable dependability. And my specific needs are not the same as many others. This photo best illustrates my dropouts identically. My axle is seated deeply as possible and I have no slippage at all. While...
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    The ultimate torque arm (For <2kW and standard axles)?

    And this is a common problem in the design of many "universal adapters" for conversion,... not truly universal or safely adequate for most needs. As I noted previously, this is great for "MY" particular needs. Although my heavy plate aluminum dropouts seem sturdy enough for my current...
  22. D

    The ultimate torque arm (For <2kW and standard axles)?

    Not so thrilled of that unusual design above,.... mostly due to cost and precision of manufacturing for markets. BUT, it may have a place in some unique applications. And I suppose that's what I like most of that original "multi-layered" design,... it's not much different than typical TAs for...
  23. D

    The ultimate torque arm (For <2kW and standard axles)?

    I agree,.... and I mean that nicely. I does looks good. So give it a go, and see how it does. IMO,... they would be quite reliable for use in under 1000W applications. Being a past die maker, these could be easily stamped and treated with acceptable tolerance for that sub-1000W use. And they...
  24. D

    Is REGEN, really worth it ?

    Let me start by stating that I really like Regen Braking,.... I liked it on other vehicles too, from golf cars to the kids Civic Hybrid. AND I like it on my e-bike as well. Being a heavy 29" beach cruiser, it coasts with pretty good momentum. I do have some anticipation ahead, but my heavy regen...
  25. D

    Specific heat absorption capacity of disc brakes

    The amazement of age, is seeing for ourselves the unexpected and incredibly rapid advances in technology and everyday applications! Like coaster brakes, sealed-beam headlights were a long established and common standard for nearly half my life,.... then suddenly SEVERAL various technologies...
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