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by neptronix
Feb 28 2021 2:14pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

The cantilever brake hole is at the top of the fork, so it should work fine for a 20".
by neptronix
Feb 28 2021 2:13pm
Forum: Forum Rules and Features
Topic: Profile doesn't allow URL
Replies: 4
Views: 68

Re: Profile doesn't allow URL

I may be able to get away with just changing your username and removing the ' instead of deleting the account.
Let me know what you want to do via PM :thumb:
by neptronix
Feb 28 2021 9:21am
Forum: Forum Rules and Features
Topic: Profile doesn't allow URL
Replies: 4
Views: 68

Re: Profile doesn't allow URL

Congratulations, you found a bug in phpBB that is so elementary that i can only laugh at it. The issue is that you have an apostrophe, aka ' character in your username. This is preventing the database from writing your profile update. I would ditch this account and create a new one using a different...
by neptronix
Feb 28 2021 9:08am
Forum: General Discussion
Topic: What defines a high end high quality e-bike frame?
Replies: 8
Views: 252

Re: What defines a high end high quality e-bike frame?

Yup, 18fet and about 1.2kw-hr of 20C RC Lipo.
by neptronix
Feb 27 2021 8:38pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

..i'd say in practice with a leaf (16lb hub ) and very light tires, i retained maybe 33% of my rear suspension's action. It wasn't as luxury smooth, but still better than not having suspension at all for sure. I didn't feel uncertain at high speeds, but yea. For offroad, a mid drive does shine. On t...
by neptronix
Feb 27 2021 7:39pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

Get yourself a programmable controller. I like my infineon clones, but there's new and more interesting stuff out there today.

One that can do at least 40 amps would be ideal.. would give you room to experiment with higher power motors in the future. :thumb:
by neptronix
Feb 27 2021 5:32pm
Forum: EBike Technical
Topic: Battery Autopsy
Replies: 11
Views: 255

Re: Battery Autopsy

Well yes, this is ping battery's design, both the cell layout, the choice of bms, how things seem to be wired, etc.. so i call it a ping battery.. or more technically, a ping battery clone.

Hey, glad you learned. That's what this place is all about. :)
by neptronix
Feb 27 2021 5:27pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

The mid drive is an excellent route too, 3000w of power isn't a joke, it is likely just as powerful as the 45mm DD, but bike chain and derailleurs etc are rated at 500w, so they are sort of disposable maintenance items at those power levels. A downhill bike with very strong torque plates running a D...
by neptronix
Feb 27 2021 5:20pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

Motorcycle wheels are going to be too wide and have much larger diameter axles, so you can forget that. A 22" bike rim ( some are sold for BMX purposes ) is said to take 18" motorcycle tires.. you could have about a 23 inch diameter at best.. so there is some geometry that will need to be ...
by neptronix
Feb 27 2021 5:07pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

Actually i've been doing some reading.
The 1000w lightest.bike kit ( https://lightest.bike/#FEATURES ) is probably just the ticket for driving that mid drive.

Some emails have been sent.
by neptronix
Feb 27 2021 4:24pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

It was OK at 21 mph (top speed) but I would not want to go a lot faster...I just don't feel very "connected" to it like I do when riding a bicycle. Yes, that whole center of gravity problem... your point of leverage over the vehicle is just too high. Basically the opposite of a semi recum...
by neptronix
Feb 27 2021 3:20pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

2. You are probably right about the very large rear hub and more powerful controller being a better solution for my goals. However, I am in love with the idea of dual electric drive. Even if I put a larger rear hub on I would still feel compelled to add the mid drive as well. That would be more exp...
by neptronix
Feb 27 2021 2:39pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

1) Oh i see. You're using low tire pressure to get suspension at the expense of added rolling friction. You will still hit a limit with that approach at some speed. I hit my limit at 30mph on 2.0" tires when hitting odd-shaped irregularities in the road that sent my wheels into the air and side...
by neptronix
Feb 27 2021 2:26pm
Forum: EBike Technical
Topic: Battery Autopsy
Replies: 11
Views: 255

Re: Battery Autopsy

Edit Update: Número tres gotas como una roca. It is already down to 2.6 volts :cry: What about a nominal 48 Volt 15S1P LiFePO4 battery ? I'm sorry to hear you learned a hard lesson about buying used batteries. I don't even sell my used batteries. Too much of a PITA shipping them or worry about what...
by neptronix
Feb 27 2021 2:13pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

It worked pretty good in the 20" wheel on the rear of the Shuffle but did not have a temp sensor. Top speed was 21 mph on a fully charged 13s battery on it on level ground. I don't particularly care for riding a kick bike/scooter so I am selling it and going back to traditional style bicycles ...
by neptronix
Feb 27 2021 1:29pm
Forum: EBike General Discussion
Topic: Please help me critique my dream ebike.
Replies: 16
Views: 237

Re: Please help me critique my dream ebike.

Okay, since you want critique. You'll experience instant regret going beyond 35mph on a bike without full suspension. The second you have a wheel lift into the air from a bump and land in a place you don't expect, causing an emergency counter-correction, you'll regret your frame choice, because you ...
by neptronix
Feb 27 2021 1:11pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 46
Views: 2061

Re: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive

Some news.. I convinced maxaraya to ship me some of their chromoly suspension and non-suspension forks that they experimented with in early production. It's an honor to be able to get these very unique parts. image001.jpg They're oddballs. They both take 20" wheels, yet have brake bosses design...
by neptronix
Feb 27 2021 11:11am
Forum: General Discussion
Topic: What defines a high end high quality e-bike frame?
Replies: 8
Views: 252

Re: What defines a high end high quality e-bike frame?

A high end bike frame is often an ideal e-bike frame. http://neptronix.org/forumpics/hiryuu_spring.jpg This is an early 2000's Turner O2. One of the sturdiest yet lightest frames of it's age. It held up to 40-60mph duty and could have handled even more if the rear swingarm was longer. It was built t...
by neptronix
Feb 26 2021 9:03pm
Forum: Polls & Surveys
Topic: ebikes.com or endless-sphere.com
Replies: 60
Views: 981

Re: ebikes.com or endless-sphere.com

Thank you :thumb:
by neptronix
Feb 26 2021 7:48pm
Forum: EBike Technical
Topic: Battery Autopsy
Replies: 11
Views: 255

Re: Battery Autopsy

Ah, the classic signalab BMS that drains it's power from 4 cells and eventually kills those. Must be a ping battery or an offshoot. Wonder how old it is.. With extensive balancing, you'll find out if it's worth keeping or not. It would need to be on a charger for days to accomplish that. I'd return ...
by neptronix
Feb 26 2021 7:29pm
Forum: E-Vehicles General Discussion
Topic: Can Tesla converted to diesel?
Replies: 20
Views: 376

Re: Can Tesla converted to diesel?

I actually find that offensive. I think that means you win the thread. :lol:
by neptronix
Feb 26 2021 6:35pm
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 40
Views: 1102

Re: Move to XenForo software

pps - xenforo is badass and you are going to frocking love it. I can't wait to get it rolling. I have never felt so motivated to do anything in my life. Right now i'm forcing myself to ear the yogurt on top so i can savor the fruit on the bottom. Seriously.
by neptronix
Feb 26 2021 6:29pm
Forum: E-Vehicles General Discussion
Topic: Can Tesla converted to diesel?
Replies: 20
Views: 376

Re: Can Tesla converted to diesel?

I made this meme years ago to see how many people i could offend at once.
coal-rolling.jpg
coal-rolling.jpg (236.36 KiB) Viewed 92 times
I encourage you to coal roll the right way.
by neptronix
Feb 26 2021 5:55pm
Forum: Help wanted & offered
Topic: ES is looking for a SEO expert
Replies: 2
Views: 64

Re: ES is looking for a SEO expert

Ah, i don't want to get super technical and aim to be absolute #1. But i guarantee you there's going to be some low hanging fruit stuff that i don't see or even think about. That's mostly what i'd like to focus on, unless Justin wants to pony up for some really extensive SEO work. Thank you for tent...