Search found 197 matches

by DRMousseau
May 25 2019 1:19am
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 242
Views: 40728

Re: 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. If you use a 16" motorcycle rim, you may be able to get one with spoke holes oriented for the oblique angles of your spokes. And you will have a rim that can take very high tension on thick 12ga or 10ga spok...
by DRMousseau
May 25 2019 12:00am
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 242
Views: 40728

Re: 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 beyond ...
by DRMousseau
May 24 2019 10:13pm
Forum: E-Bike General Discussion
Topic: Poor Man's RV
Replies: 178
Views: 5568

Re: 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 home,.... a ...
by DRMousseau
Feb 15 2019 12:42am
Forum: General Discussion
Topic: Road trippin' with an eBike
Replies: 8
Views: 963

Re: 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, etc., a...
by DRMousseau
Feb 12 2019 1:41pm
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: 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 with ...
by DRMousseau
Feb 12 2019 11:37am
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: EBike Tire Speed Rating

It says the max is 50 PSI. What's the minimum? That's the important number, if you're worried about too little inflation. 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...
by DRMousseau
Feb 11 2019 11:43pm
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: EBike Tire Speed Rating

It says the max is 50 PSI. What's the minimum? That's the important number, if you're worried about too little inflation. 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...
by DRMousseau
Feb 11 2019 11:33pm
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: EBike Tire Speed Rating

The stock tires on the bike are Bontrager XR2s, yeah the rear one wore really fast, but I guess that's to be expected when dumping 2400 watts on the rear wheel? Idk you tell me, you seem to have an equally or more powerful bike than I do. No idea what the TPI of those tires are though, but I ran th...
by DRMousseau
Feb 11 2019 12:31pm
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: EBike Tire Speed Rating

...because I probably wouldn't do more than 23-24 mph continuously, anything above 25 makes my eyes water. (yup I'm a wimp) :D 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 an...
by DRMousseau
Feb 10 2019 10:49pm
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: EBike Tire Speed Rating

I understand this but, I still don't get where the 25 kph "limit" on these speed rated "e bike" tires comes in to play. It seems like it's just a number they threw on there. 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 25k...
by DRMousseau
Feb 10 2019 9:57am
Forum: E-Bike Technical
Topic: EBike Tire Speed Rating
Replies: 35
Views: 1221

Re: 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 seem...
by DRMousseau
Oct 03 2018 12:07am
Forum: Battery Technology
Topic: PSA: dont underspec your strips
Replies: 26
Views: 1949

Re: PSA: dont underspec your strips

Low melting point solder, dudes. Sometimes I use pure indium, MP about 300F. Its electrical and thermal conductivities are much better than lead-tin solder. Sometimes I use indium-bismuth alloy, MP about 165F. Both are expensive, but a little goes a long way. So if i were to pull some serious amps ...
by DRMousseau
Oct 01 2018 10:54pm
Forum: Battery Technology
Topic: PSA: dont underspec your strips
Replies: 26
Views: 1949

Re: PSA: dont underspec your strips

https://endless-sphere.com/forums/download/file.php?id=241412 That looks great for conductivity but bad for brutalizing the cell with heat from soldering. I pre-tinned the cells using generous amounts of Rosin Flux to minimize time applying the iron. OF COURSE, I used Thick cardboard insulating rin...
by DRMousseau
Sep 20 2018 11:50pm
Forum: E-Bike General Discussion
Topic: Ebike prices expected to rise? 25% tariffs.
Replies: 164
Views: 5748

Re: Ebike prices expected to rise? 25% tariffs.

You would lose your bet. I assure you , I have a income that can easily afford a $5000 ebike. No need to spend that when I was able to get all the performance I need, for $3000. Then I would lose on much different principles. In various industries of services and products, I've always found the "tr...
by DRMousseau
Sep 20 2018 2:10pm
Forum: E-Bike General Discussion
Topic: Ebike prices expected to rise? 25% tariffs.
Replies: 164
Views: 5748

Re: 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 worke...
by DRMousseau
Sep 07 2018 7:30am
Forum: E-Bike General Discussion
Topic: Conversion to electric motorcycle
Replies: 18
Views: 828

Re: 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, chass...
by DRMousseau
Sep 06 2018 11:54pm
Forum: E-Bike General Discussion
Topic: Conversion to electric motorcycle
Replies: 18
Views: 828

Re: 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 (right...
by DRMousseau
May 05 2018 8:23pm
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 8065

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

Buk___ wrote:
May 05 2018 6:24am
Is that a motor behind there? It looks like an ordinary wheel.
No motor in this pic,... jus a good closeup that depicts my exact dropout plate.
by DRMousseau
May 05 2018 4:52am
Forum: E-Bike General Discussion
Topic: Need opinions on custom build project
Replies: 0
Views: 282

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 with ver...
by DRMousseau
May 05 2018 2:15am
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 8065

Re: 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 the ...
by DRMousseau
May 02 2018 2:41am
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 8065

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

I reached the conclusion that there is so much variation in the shape and size of both front and rear dropouts that coming up with a single pattern that would fit a reasonable number of them would only be possible by recreating the existing, clunky, two-part designs that requires jubilee clip or so...
by DRMousseau
Apr 20 2018 1:44pm
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 8065

Re: 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 genera...
by DRMousseau
Apr 14 2018 12:03am
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 8065

Re: The ultimate torque arm (For <2k and standard axles)?

Looks good. Give it a shot... 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 ...
by DRMousseau
Apr 13 2018 11:20pm
Forum: E-Bike General Discussion
Topic: Is REGEN, really worth it ?
Replies: 73
Views: 4822

Re: 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 set...
by DRMousseau
Apr 12 2018 10:13am
Forum: E-Bike Technical
Topic: Specific heat absorption capacity of disc brakes
Replies: 147
Views: 10891

Re: Specific heat absorption capacity of disc brakes

CMC discs, like most composite parts, will become affordable pretty soon, and their performance could be changing the bicycle brakes for the best. Smaller, thicker rotors, with big carbon calipers. Maybe I am too old to live to see it, but I believe it will happen. The amazement of age, is seeing f...