Search found 2987 matches

by Sunder
Nov 09 2020 9:01pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

You need to get it together and start riding! Wish I was in someplace where the weather is warm, I'd be out riding every single day. I'd be seeing granola's with turtle necks and fleece and I'd be shirtless. You know what? You're right. I've let my bike sit too long unfinished because I have nowher...
by Sunder
Nov 05 2020 5:57pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Not really had time to read through your thread lately, and not sure what you asked me to respond to. But to charge the car from inside, you're on the right track. Find a place to wire up a connector that doesn't require ignition to be on. Get a voltage regulator that will do 14.8v @ 9A (a bit of he...
by Sunder
Nov 03 2020 6:26pm
Forum: E-Bike General Discussion
Topic: The downside of more electric bikes
Replies: 32
Views: 899

Re: The downside of more electric bikes

Good to see a variety of feedback from people, and that the movement is worldwide. For Sydney, heaps of the new riders are just food delivery, but still a sizeable chunk I see are commuters. People who can't afford to drive into the city but don't want to risk public transport. I did find an old mem...
by Sunder
Nov 01 2020 7:03am
Forum: E-Bike General Discussion
Topic: The downside of more electric bikes
Replies: 32
Views: 899

The downside of more electric bikes

I didn't think there would be one. More parts, greater general acceptance, used bikes to buy and modify, etc. At worst, I thought if they were mostly home made, one or two incidents would cause police to start cracking down on the obvious duct tape bikes. But since Covid, almost all increases are fa...
by Sunder
Oct 16 2020 8:26pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Hi LC, goos to see your projects advancing. I've been out of action on work projects for a bit, so haven't contributed. Bit of reading to catch up, but it seems like you are having some successes, even if you are also having some frustrations. Good luck with the projects. I should be here a bit more...
by Sunder
Aug 31 2020 6:03pm
Forum: E-Bike General Discussion
Topic: What will it take to make ebikes, More mainstream ?
Replies: 173
Views: 16012

Re: What will it take to make ebikes, More mainstream ?

I suspect that it's similar in some other cities around the world, but here in Sydney, a full day of parking is around $80, lower in the more residential parts of the city, and higher in the retail and financial parts of the city. The minimum wage is about $20, so after tax a minimum wage earner, if...
by Sunder
Aug 31 2020 2:43am
Forum: E-Bike General Discussion
Topic: What will it take to make ebikes, More mainstream ?
Replies: 173
Views: 16012

Re: What will it take to make ebikes, More mainstream ?

What a thread necro! But I have the answer for Sydney... Ubereats and a pandemic lock down. Man, I have never seen so many eBikes before. Not just as a proportion of cyclists - total number. There are swarms of dozens around the restaurants in my suburb anywhere near dinner time, and during the day,...
by Sunder
Aug 20 2020 3:04am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery
Replies: 177
Views: 32035

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S (now 32S)- Seeking the Ultimate Commuter Battery

li ion is best choice - LTO has zero advantages - It's not for everyone, but to say it has zero advantages is throwing the baby out with the bathwater. I have a 48v 4Ah pack for my eBike. It's tiny, and just enough to get me to work 18km away, as long as I pedal. I have a 144v 28Ah pack for my elec...
by Sunder
Aug 18 2020 11:13pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Front hubs are only good for one thing - Simplicity. They are they easiest to get working, easiest to change the tyre on, and hardest to get wrong, which is why I sent you one in the first place. Now you have more skills working on bikes, rear hub and PROPER chain drives with sensible gearing and RP...
by Sunder
Aug 18 2020 9:06pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Rims can go out of true just from vibrations and normal road bumps. A good quality wheel on smooth pavement can last years and thousands of miles without needing a true. But a low quality wheel on a poor quality road can require truing as little as every 100 kilometers. Having a heavier load and tra...
by Sunder
Aug 16 2020 8:26pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

So are hub motors really better than chain drives ? Nothing at all wrong with chain drives, and in fact the BBS02 is one of the more popular motors in this parts. However, there is a problem with badly designed chain drives. For example, let's do some maths. Lets say you want to hit 40mph - your ma...
by Sunder
Aug 16 2020 6:45am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Another thing you need to notice(?) is that "quick release" wheels run a steel skewer through the center of the hub motor. Sooo ... you will have to drill a hole through 3/4 of the axle, without hitting the wiring, then squeezing the skewer through without damaging anything. Haha :mrgreen...
by Sunder
Aug 16 2020 6:40am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Don't see why an easy to release torque arm wouldn't be possible, but it wouldn't be 3D printed. It'd have to be CNC'ed which is the reverse of 3D printing (Start with a solid block of metal, remove the bits you don't want). You can do sintered metal 3D printing, but even on my salary, I couldn't af...
by Sunder
Aug 15 2020 8:23pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

When I said "below par", all I really meant was not getting what you should be capable of getting out of your equipment. So you might have bought a powerful motor, but because of poor design issues, not been able to get full performance out if it. It has nothing to do with the size or cost...
by Sunder
Aug 15 2020 6:40pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

As the Hub motors will be turning and hopefully the LiPo Fire won't be Burning. There's no earthly way of knowing Which direction we are going There's no knowing where we're rowing Or which way the river's flowing Is it raining, is it snowing Is a hurricane a-blowing Not a speck of light is showing...
by Sunder
Aug 13 2020 9:14pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

If I get the stimulus money I might sell the car for 500 or best offer and get a motor cycle frame and try and build a street legal bike with the FX - 75 - 5 motor. Do you know if it would be possible and what the low budget would be for that? Please let me know. My budget was $10k AUD, so about $7...
by Sunder
Aug 13 2020 8:59pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

I've dedicated this weekend to getting my 47kw battery properly managed and fully waterproof :) I had it working on a bench, but without the necessary mounts and seals to make it water proof.

My job is finally giving me the time and energy to work on it again, so I hope progress is fast from here.
by Sunder
Aug 13 2020 8:32pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Man. Keep digging yourself a hole, don't you. :/ That much overfilling at least is reasonably easy to fix. After draining to the right level, you probably want to check the plugs,and run some head cleaner through your car. There's a cheaper way to do it with water, but I hesitate to tell you, becaus...
by Sunder
Aug 13 2020 5:50pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Man, didn't you inspect the car before you paid for it? Blown motors generally aren't worth the manual labour to repair, even if you do it yourself. The rebuild kit can often cost as much as a second hand working motor before you spend a minute taking anything off. If you can get a junk yard motor f...
by Sunder
Aug 12 2020 7:34pm
Forum: E-Bike General Discussion
Topic: Why are geared motors worse than direct drive for climbing hills?
Replies: 58
Views: 3096

Re: Why are geared motors worse than direct drive for climbing hills?

Okay, thanks guys. I may make the plans something like 0.5mm too small, and then spend a few hours filing it to a perfect fit.

I don't think I want to use a mallet - Feels like there's a decent risk of damaging the motor's axles, and it's a QS273, a bit expensive to lose such a cheap part.
by Sunder
Aug 12 2020 5:03pm
Forum: E-Bike General Discussion
Topic: Why are geared motors worse than direct drive for climbing hills?
Replies: 58
Views: 3096

Re: Why are geared motors worse than direct drive for climbing hills?

You don’t need hard steel to make custom dropouts or torque plates..... The important factor is not hardness, but precision. The fit need to be tight. 100% agree. No point having a high strength torque arms if the axle is generic Chinese steel. Minimising stress in the axle is the goal . Minimise s...
by Sunder
Aug 11 2020 12:16am
Forum: Battery Technology
Topic: Quick question for any battery expert
Replies: 12
Views: 321

Re: Quick question for any battery expert

While Sunder is technically correct that if the BMS is functional the battery could still be used but with a lower capacity, the amount of time required by most BMS boards to correct the imbalance would probably make it impractical. I'm wondering if you think it would be very slow, because you're a...
by Sunder
Aug 10 2020 8:00pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

I never had hard shell LiPo. I know that when the soft LiPo packs have an unstable cell it puffs up. I wonder what happens if a hard shell LiPo gets an unstable cell. How can it puff up ? I am just curious. Hopefully it wont happen as the cells I bought off of e bay were cheap junk. Hardshell LiPos...
by Sunder
Aug 09 2020 10:23pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 6134
Views: 512196

Re: new eZip motor

Seen these? https://cdn-global-hk.hobbyking.com/media/catalog/product/cache/1/image/660x415/17f82f742ffe127f42dca9de82fb58b1/1/8/189966.jpg https://hobbyking.com/en_us/turnigy-5000mah-4s1p-14-8v-20c-hardcase-pack-1.html?queryID=&objectID=74826&indexName=hbk_live_magento_en_us_products_hbk_pr...