Search found 346 matches

by BalorNG
May 26 2022 2:32am
Forum: Bike Mechanical & Structural
Topic: reversed suspension, pull suspension, is it a thing?
Replies: 8
Views: 136

Re: reversed suspension, pull suspension, is it a thing?

Again, a pull suspension makes a ton of sense if you want to use rubber bands as suspension element.
Cheap, easy, somewhat tuneable, actually works fine - you only need some topout bumper.
Otherwise, why reinvent the wheel?
by BalorNG
May 25 2022 5:42am
Forum: EBike Non-hub Motor Drives
Topic: Simple, open source middrive anyone can build
Replies: 6
Views: 169

Re: Simple, open source middrive anyone can build

Hi Balor, I think we’re heading in slightly different directions, but I see what you mean. It’s great to see someone else using RC kit. I’m most interested by your comment about it having no torque from a standstill. What ESC are you using and is the motor sensored? I do plan to use a production Ne...
by BalorNG
May 25 2022 2:26am
Forum: Bike Mechanical & Structural
Topic: reversed suspension, pull suspension, is it a thing?
Replies: 8
Views: 136

Re: reversed suspension, pull suspension, is it a thing?

The shock is called 'snipped motorcycle inner tube' :) There are quite a few DIY projects featuring those. No sticktion, some damping, nice progression, infinitely fine-tuneable by varying 'preload' and number of 'rings'. You do need some sort of stop in suspension to keep the o-rings from falling o...
by BalorNG
May 24 2022 11:43am
Forum: EBike Non-hub Motor Drives
Topic: Simple, open source middrive anyone can build
Replies: 6
Views: 169

Re: Simple, open source middrive anyone can build

I already did that, sort of. I think using a custom laser cut 100+ T 6.25mm pitch chain cog (will NOT cost much) on with 12T or whereabouts (10T is a bit noisy) will likely work for a single step reduction for a middrive that is regen brake capable, coupled with 6384 120kv motor. A HDT5 belt drive w...
by BalorNG
May 24 2022 3:04am
Forum: EBike Troubleshooting
Topic: What does overvolting mean?
Replies: 13
Views: 188

Re: What does overvolting mean?

Since '20amp' controller (when it comes to battery amps) will usually push more phase current though the motor with a higher voltage battery, 'overvolting' is also 'overcurrenting' the motor, unless your controller allows to control phase currents as well. You get higher torque and higher top speed ...
by BalorNG
May 07 2022 4:44am
Forum: EBike General Discussion
Topic: Secondary friction motor for increased voltage
Replies: 11
Views: 411

Re: Secondary friction motor for increased voltage

Just like other people said, a friction drive with low turn count CAN allow you to reach higher speeds from same battery, provided it is powerful enough to overcome air resistance it that speed, and your battery can provide it. Otherwise, indeed, this is just a perpetual motion machine you are tryin...
by BalorNG
Mar 22 2022 2:16pm
Forum: E-Vehicles General Discussion
Topic: Pedals which drives a generator
Replies: 4
Views: 341

Re: Pedals which drives a generator

"You need to furiously pedal for 30min in order to drive the electric motor for 3min" Could you post data to support that, please. It doesn't seem to align with the statement made about the 200 watts out can be had with 250 watts input. Not trying to be confrontational, just would like to...
by BalorNG
Mar 02 2022 12:22am
Forum: Bike Mechanical & Structural
Topic: Thai drag bike tires.
Replies: 26
Views: 1070

Re: Thai drag bike tires.

Well, in F1 racing if they could have got away with bicycle width tires they would have done that, right? No aero nightmare to manage... well, obviously they did not. Things, of course, are more complex than that: F1 tires are literally 'flypaper full of glue', have rolling resistance of a piece of ...
by BalorNG
Feb 27 2022 6:09am
Forum: EBike Build Threads
Topic: eMTB with Custom Build Drive Kit
Replies: 12
Views: 44550

Re: eMTB with Custom Build Drive Kit

Nice build; nice to see a DIY mid drive setup. Why did you go with a single speed setup? I plan to use the bike on flat, off-road terrain. The thinking behind using a single speed was that I would have a lot of power to my disposal to accelerate to 20/25kmh and can then pedal with constant high cad...
by BalorNG
Feb 27 2022 6:04am
Forum: EBike Build Threads
Topic: eMTB with Custom Build Drive Kit
Replies: 12
Views: 44550

Re: eMTB with Custom Build Drive Kit

Nice build; nice to see a DIY mid drive setup. Why did you go with a single speed setup? I use a similar sized motor at about 2,500 watts and drive directly to the rear wheel with a separate #219 chain (more like the China gas bikes at 50cc) and you just don't need gears except for when you hit a h...
by BalorNG
Feb 25 2022 3:29pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

My point is you don't need to understand these things to buy them, you don't need much knowledge to assemble them, and you don't need anything at all to have an opinion. But you have to understand what you're doing at least relatively well if you are to build a unique thing from scratch and get it ...
by BalorNG
Feb 25 2022 3:06pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

The fact remains that any fool (besides yourself) can tell you that a linkage steered bike doesn't steer as well as a direct steered bike. But maybe if we all just give it more time.... Well, I have to agree that it does not HAVE to be that way. Making something linkage-steered is harder than direc...
by BalorNG
Feb 25 2022 2:47pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

https://www.velopiter.ru/vlp/cache/preview/max2000/be7/be79191ad75541043090cadc8068deea.jpg By ditching the outboard wheels for a single rear one and fabbing 'droupout extenders', not by much, I think 5-7 cm, with along with rear left side RC drive. Any tips? I've considered removing the subframe f...
by BalorNG
Feb 25 2022 1:29pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

Please take such comments elsewhere john61ct you have no backbone. Well, you might have one, but it is not connected to anything, apparently :D And you believed that lower center of gravity hurt stability in single track vehicles until I straightened your ass out. :lol: If there is a vote for banni...
by BalorNG
Feb 25 2022 12:01pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

ebike4healthandfitness wrote:
Feb 25 2022 11:54am
john61ct wrote:
Feb 25 2022 1:39am
ebike4healthandfitness wrote:This statement... needs to be banned.
Please take such comments elsewhere
john61ct you have no backbone.
Well, you might have one, but it is not connected to anything, apparently :D
by BalorNG
Feb 25 2022 12:01pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

Well... I've ridden linkage steered bikes from Bullitt, Cetma, Human Powered Machines, Virtue, Bilenky, and a couple made by friends of mine here in Austin. They were all fine, and they all had hinky steering that felt better going slow. I've built some linkage steered trikes, too, that (unlike bik...
by BalorNG
Feb 19 2022 4:44am
Forum: EBike General Discussion
Topic: What Would You Build?
Replies: 11
Views: 373

Re: What Would You Build?

If you wanted a Adult 20" Trike. [...] You do not want to go fast mainly ride on thr sidewalks. If those were the things I wanted for myself, I'd probably stay home and drink myself into an early grave. How about start with a real bike, and ride in the street where vehicles belong? I know we a...
by BalorNG
Feb 17 2022 3:49pm
Forum: EBike Technical
Topic: Max safe Flux Weakening
Replies: 20
Views: 2300

Re: Max safe Flux Weakening

Flux weakening is good on IPM motors where a considerable portion of the power is made using reluctance torque anyway. https://www.automate.org/industry-insights/interior-permanent-magnet-motors-power-traction-motor-applications So, SOME motors paired with SOME controllers (middrives, basically) are...
by BalorNG
Feb 05 2022 11:17am
Forum: Motor Technology
Topic: Motors - state of the community
Replies: 13
Views: 778

Re: Motors - state of the community

At very high speed, and lacking massive energy density of fossil fuels (tank), only way to *cruise* at very high speeds w/o towing a Tesla-sized battery pack is streamlined shell, and we have an entire thread dedicated to that in ebike section :) Thanks, I'll check for this! So far what I've found ...
by BalorNG
Feb 03 2022 6:11am
Forum: Motor Technology
Topic: FLIPSKY new 20s 100A tiny controller (vesc based)
Replies: 360
Views: 21376

Re: FLIPSKY new 20s 100A tiny controller (vesc based)

b264 wrote:
Feb 02 2022 9:59pm
mxlemming, you're extremely ungrateful and hate-filled.
Hey, I'm all for free software and all, and I have great respect for what VESC and Co are doing, but boy you are one sanctimonious prick.
by BalorNG
Feb 02 2022 1:50am
Forum: Motor Technology
Topic: Motors - state of the community
Replies: 13
Views: 778

Re: Motors - state of the community

I am doing an electric conversion on a 1980 Yamaha SR250. My wish is to be able to cruise at 140 kph. Emptying your battery pack in a few minutes isn't "cruising". My back of the envelope estimate suggests you'll need about 30 kW at the wheel to hold 87 mph. At very high speed, and lackin...
by BalorNG
Feb 01 2022 9:41am
Forum: Bike Mechanical & Structural
Topic: Considering build - Sun X-3 recumbent
Replies: 10
Views: 401

Re: Considering build - Sun X-3 recumbent

I'd say a nice grocery getter in foul weather, especially with some sort of roof.
Does not seem like something *fun* to ride though.
by BalorNG
Feb 01 2022 2:08am
Forum: Motor Technology
Topic: Motors - state of the community
Replies: 13
Views: 778

Re: Motors - state of the community

I am doing an electric conversion on a 1980 Yamaha SR250. My wish is to be able to cruise at 140 kph. Emptying your battery pack in a few minutes isn't "cruising". My back of the envelope estimate suggests you'll need about 30 kW at the wheel to hold 87 mph. At very high speed, and lackin...
by BalorNG
Jan 31 2022 1:57am
Forum: Motor Technology
Topic: Smart ESC
Replies: 17
Views: 1110

Re: Smart ESC

How much phase current can it handle? Erpm limits?
by BalorNG
Jan 28 2022 4:51am
Forum: Motor Technology
Topic: vesc red lighting on decel
Replies: 5
Views: 206

Re: vesc red lighting on decel

I've expected a thread that uses internal accelerometer to power a set of brake lights :) To be fair you do is simpler, ehehe.
What kind of VESC is that anyway? What is 'HI200'?