Search found 1292 matches

by DogDipstick
May 14 2022 7:47am
Forum: EBike General Discussion
Topic: Do 100mph bikes exist??
Replies: 62
Views: 2739

Re: Do 100mph bikes exist??

in the event you're wondering how I know these things. So what strictly defines the difference between a mc tire and a bicycle tire in your assertion? I would presume the contrary without thinking too much as to a car tire vs a mc tire. I feel my tire has very little RR. I glide for hundreds of fee...
by DogDipstick
May 12 2022 7:24am
Forum: EV Business World
Topic: Rivian's hot lunch
Replies: 9
Views: 250

Re: Rivian's hot lunch

@ $104.
Go buy it.
https://carsandbids.com/auctions/rNBMNV ... ch-edition

These things sure sell. Lol.
by DogDipstick
May 11 2022 11:50pm
Forum: Battery Technology
Topic: Any reason to not go Straight for a 14s, 52v pack for my first battery?
Replies: 6
Views: 428

Re: Any reason to not go Straight for a 14s, 52v pack for my first battery?

Dogdipstick is a BIG fan of going 60v; what are ya'lls opinions? a Lightning Rods big block kit, and a Sondors Thin[/i] I have one of those too, that I am trying to get going. Lr big block. I also have an Ecospeed geared mid drive. So many choices. Top speed, available chains and combos.. rpms, thi...
by DogDipstick
May 11 2022 11:39pm
Forum: EBike Technical
Topic: How to get full power from a dead stop using Sabvoton 96120 controller
Replies: 5
Views: 157

Re: How to get full power from a dead stop using Sabvoton 96120 controller

I have heard the Sabvoton handles the takeoff current differently? IDK I will try to find the reference. I think I might have read something like that. 80 mph is still pretty fast. IDKY you cant do them off the line, my Kelly thingies ( controllers) have alot of " umpf" and I can power whe...
by DogDipstick
May 10 2022 4:24pm
Forum: Electric Watercraft
Topic: Electric standup jetski build
Replies: 11
Views: 259

Re: Electric standup jetski build

Motor sprocket 14T Driveshaft sprocket 10T (Did this so I could adjust rpm/torque with sprockets) Even drive / Even driven.... sprockets... requires a chain with an ODD number of links or.... else your wear will be 2x faster, or even more. Just like if you have an even number of links, a even drivi...
by DogDipstick
May 08 2022 2:58am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

Chalo says it all right here. Household switches would be large, heavy, expensive, and short-lived. There would be substantial transmission losses if distribution were DC, and substantial local rectification costs if distribution were AC and residential service were DC. Convince people to reproduce ...
by DogDipstick
May 08 2022 2:27am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

Where are you located friend? This matters. Of course wiring a house exclusively for 48v would use much more copper than currently, maybe prohibitively so. It is not one house. It is not one house, we must, consider the price of copper, for. It is 2.3 billion homes. On planet Earth. Do not forget th...
by DogDipstick
May 08 2022 2:25am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

So why does code state that continuous loads can only be 80% of the amp rating? Show me. Cite a notation: a reference. Your source, so we are on the same page, please. I might be able to explain your misinterpretation. Based on your rudimentary experience in the application under discussion I see y...
by DogDipstick
May 07 2022 11:37am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

------------------------------------- Receptacles Receptacles (and breakers) would be labeled by their continuous power rating , instead of the non-continuous amp rating used now. They are rated for continuous duty. Every insurable UL tested NEC code adhering household receptacle or breaker that I ...
by DogDipstick
May 07 2022 11:27am
Forum: Battery Technology
Topic: More Power, Capacity and Less Expensive (21700)
Replies: 39
Views: 1261

Re: More Power, Capacity and Less Expensive (21700)

Here's another youtube showing what tool packs are 21700 and 18650 and the reasoning ... What's Inside Tool Batteries? Milwaukee FLEX DeWalt Makita Snap-On [18650 21700 ??] https://www.youtube.com/watch?v=Plhxnrba2D8 Tool Battery Manufacturers Welcome 21700 for the Reasons in the Thread Title -- :b...
by DogDipstick
May 07 2022 10:39am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

When copper... vaporizes... it suddenly expands by a factor of 67,000 in volume. Maybe that's 100v DC, maybe somewhat lower, but it seems in the ballpark. YOU are CRAZY for considering the contact of 100v DC. Life threatening. Certainly. it's only incapable of starting fires or injuring someone at 2...
by DogDipstick
May 07 2022 10:35am
Forum: General Discussion
Topic: Ideal Household Electrical Standards?
Replies: 31
Views: 888

Re: Ideal Household Electrical Standards?

In my opinion home electrical should be ba... If it costs a little more in copper, switches and breakers so be Due to being much safer, electrical work could probably be done without a licen You must be young to think you can design a better system than the one that is well over 100 years old. The ...
by DogDipstick
May 04 2022 10:40pm
Forum: Battery Technology
Topic: More Power, Capacity and Less Expensive (21700)
Replies: 39
Views: 1261

Re: More Power, Capacity and Less Expensive (21700)

Here is a link to a for sale thread I closed a while back. Shows a bunch more pics. yeah, Ron has started a pouch cell build thread here in the past for sure. Im here in this thread to learn about round cells though. It is important skills, to me, as a laborer trying to sell my battery repair skills...
by DogDipstick
May 02 2022 6:19am
Forum: EBike General Discussion
Topic: 21 inch down to 18 inch, good idea??
Replies: 9
Views: 319

Re: 21 inch down to 18 inch, good idea??

ebike11 wrote:
May 02 2022 6:15am
No. It is not.

Better efficiency with the 18" too. 78% vs 75%. You reach a higher RPM. You also use less amps to maintain that (top) speed.

So the range would be better.
by DogDipstick
May 02 2022 6:04am
Forum: EBike Technical
Topic: Motor controller specifications
Replies: 6
Views: 580

Re: Motor controller specifications

It's simulating the sine wave signal at 16khz. The square wave in the image. Also: there are many ways to " skin a cat". I do believe. 1200px-Pwm.png 1920px-Delta_PWM.svg.png Controller is adjusting the controller output at 16kHz so there’s a measurement, calculation and update to the out...
by DogDipstick
May 02 2022 5:47am
Forum: EBike General Discussion
Topic: 21 inch down to 18 inch, good idea??
Replies: 9
Views: 319

Re: 21 inch down to 18 inch, good idea??

Use the CroMo 5004. https://ebikes.ca/tools/simulator.html?bopen=true&motor=MCRO5004_Sinks&batt=cust_104_0.02_20&cont=cust_200_400_0.03_T&kv=16&hp=0&cont_b=cust_200_400_0.03_T&motor_b=MCRO5004_Sinks&batt_b=cust_104_0.02_20&hp_b=0&kv_b=16&wheel_b=24i&ax...
by DogDipstick
May 02 2022 5:28am
Forum: EBike General Discussion
Topic: 21 inch down to 18 inch, good idea??
Replies: 9
Views: 319

Re: 21 inch down to 18 inch, good idea??

Also how would you compensate for the loss in top speed going down to 18inch? The Grin ebike simulator will tell you definitively the top speed and tork out, per amp. Acceleration for each setup too. 18" and 21". In MPH/sec/sec. 28s pack in a 3T QS205? Goddamn how many rpm do you achieve?...
by DogDipstick
May 02 2022 1:49am
Forum: Battery Technology
Topic: More Power, Capacity and Less Expensive (21700)
Replies: 39
Views: 1261

Re: More Power, Capacity and Less Expensive (21700)

A Molicell 2600mAh 18650 ... @ @ 5$/ cell..... 5$/9.3wH = $537/kWh . That is the retail price of a single Molicel P26A (2021-dated) - 35A 2600mAh 18650. 537$/kWh. this is why the 4200 interested me, the lower and competitive price per kWh. Now dont get me wrong. If I could aford an 18650 pack I for ...
by DogDipstick
May 01 2022 3:33am
Forum: EScooters/EMotorcycles
Topic: I need acceleration, not range or top speed.
Replies: 9
Views: 405

Re: I need acceleration, not range or top speed.

I love my recycled 25Ah EV cells. They just dont quit. Power for days and high charge rates.... they laugh at 10C all day. 500A out, contin, without any damage, long term, ( they last 10 years) is easily possible in a 2p, 50Ah pack. Peaks over 1000A easy. Your motor controller phase current seems to...
by DogDipstick
May 01 2022 2:07am
Forum: Battery Technology
Topic: More Power, Capacity and Less Expensive (21700)
Replies: 39
Views: 1261

Re: More Power, Capacity and Less Expensive (21700)

Yeah ... wake me up when you can actually buy quality cells at a price that even comes close to that ! Possibly implying that the quality of 21700 cells are lagging even farther behind the quality of 18650 cells. ...... No... simply saying that for any equivalent quality cell, ( not 2nds , salvaged...
by DogDipstick
Apr 29 2022 6:40am
Forum: E-Vehicles General Discussion
Topic: Motor controller cost breakdown
Replies: 5
Views: 294

Re: Motor controller cost breakdown

Mosfets are like $4-5 each, an ebike controller can have 18 mosfets, that $90 just in mosfets, unless you go with something cheaper, then there is the micro-controler, maybe $30???? who knows.Check it out for yourself at mouser.com. Thats my effort. A controller can have any multiple of six for a t...
by DogDipstick
Apr 29 2022 6:10am
Forum: EBike General Discussion
Topic: [Connector]Single connector for motor to controller connection...
Replies: 8
Views: 318

Re: [Connector]Single connector for motor to controller connection...

There is always Cannon Combo-D Made by Cannon, Amphenol, Tyco, International Rectifier, ect. Its always been there. Will always be here. I use them. The crimper costs 490$ and the turret for the head is another 200$. You can get tehm in solder cup too, not the barrel crimp but I like the barrel crim...
by DogDipstick
Apr 24 2022 10:52am
Forum: Battery Technology
Topic: Graphene lipo dreams…..?
Replies: 17
Views: 507

Re: Graphene lipo dreams…..?

I trust him and his specs more than someone exclusively in the battery selling business. I do not. Quite the opposite, actually. I'll never trust someones own numbers.. first off.. and well... yeah, I'll stop talking trash bout other enthusiast's products right there... for now.... yeah. I trust in...
by DogDipstick
Apr 24 2022 10:44am
Forum: EBike General Discussion
Topic: 0-30 MPH with bicycle tires
Replies: 16
Views: 747

Re: 0-30 MPH with bicycle tires

My new build V3 4T is registering right around 5 sec to 40mph right now. 4.5kW contin and 150A phase peak. Pulls a solid 105A for a short timed speed test from the batt.... Likes to sit right around there.... However this Kelly is doing its thing. Yea the tork from the lower count wind is hurts a li...
by DogDipstick
Apr 23 2022 5:52am
Forum: Battery Technology
Topic: Graphene lipo dreams…..?
Replies: 17
Views: 507

Re: Graphene lipo dreams…..?

Those Graphene are good cells at a high price per kWh. Like 1000$/ kWh. To give you an idea, I pay 80$ for a kWh of recycle electric car cells... And they are 2-3x more powerful than the best hobbyking Graphene lipos... But that said... Graphene from HK will fly a plane very fast. Yes some use huge ...