Search found 581 matches

by cycleops612
Feb 18 2017 1:04am
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

Cars and some motorcycles have one-piece wheels because they're cheaper, and because limiting weight is not an engineering imperative for those vehicles. Where weight is a factor, as in motocross bikes, electrathon cars, and solar racers, wire spoked wheels are still used-- because they are much st...
by cycleops612
Feb 17 2017 7:46am
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

Anyhoo, further searching has confirmed that 20" is the biggest cast w/ integrated DD hub i can find also. if u can live with 20", it sure sounds a bulletproof, simple way to go for those, who like me, are disinclined to the wheel tuning learning curve (substantial, as your posts make very clear). L...
by cycleops612
Feb 13 2017 4:40am
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

seems to me the topic isnt about the best way to spoke a wheel, but I am sure many are elsewhere. Its more about a strong wheel for big commuters, w/o the hassles your posts so amply demonstrate. Advances have altered the paradigm. Large diameter light wheels were the preserve of spokes despite the ...
by cycleops612
Feb 09 2017 9:50pm
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

I am so glad this thread was started. I teeter back and forth on the same idea, has haunted me for months. Issue I have is strength, we speak of it very ambiguously. I just got a 1700g 16" steel moped rim in the mail today. I have a 1100g aluminum motorcycle rim, and some 400-600g double walled bic...
by cycleops612
Feb 09 2017 5:33pm
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

I, and I hope others, remain unconvinced by the few relevant counter arguments. TBF, w/o relevant specs on loads, costs and respective weights, its hard for any of us to be conclusive. but if the rear wheel is the weak spot for a given big riders bike, then cast seems stronger, and by integrating th...
by cycleops612
Feb 08 2017 6:04am
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

Re: heavy rider spokeless integrated hub motor. Discuss?

Yes, a badly damaged rear wheel does mean a new rotor/wheel the same (the stator could be swapped over at no cost). Its a valid choice to go for better less repairable tho. If i damage my axial mid-drive bikes frame, its the same situation - its customised for the Bofeili motor. I accept that, as it...
by cycleops612
Feb 08 2017 4:57am
Forum: E-Bike General Discussion
Topic: heavy rider spokeless integrated hub motor. Discuss?
Replies: 117
Views: 9119

heavy rider spokeless integrated hub motor. Discuss?

WheelsCast.png I have reflected a lot on the fact that so many great candidates for bikes are handicapped further by exceeding mainstream bicycle design weight limits. Whatever the bike chosen, i read that big riders main weak spot is the rear wheel. re the below link (Proof of concept only): its a...
by cycleops612
Jan 19 2017 7:12pm
Forum: E-Bike Technical
Topic: Sturmey-Archer 5-speed hub, it's real!
Replies: 81
Views: 18565

Re: Sturmey-Archer 5-speed hub, it's real!

Yes, so I might try my hand at a 3 speed hub when this one blows up.... Otherwise it's back to a casette, and replacing chains and gears every so often. I guess what we really need is an internal transmission that goes with the motor setup. I think 4 gears is all you really need at this power level...
by cycleops612
Jan 19 2017 3:26am
Forum: E-Bike Technical
Topic: Sturmey-Archer 5-speed hub, it's real!
Replies: 81
Views: 18565

Re: Sturmey-Archer 5-speed hub, it's real!

All good input re limits for potential punters, but lets not lose our grip on reality.

WE ARE TALKING BICYCLE COMPONENTS.

"My component wont take 3kw, boo hoo/poor quality..." is not reality.
by cycleops612
Jan 12 2017 4:46pm
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

I use cheap low spec chains, chainring and cassette because I don't worry about weight. They tend to last about a year treating them disrespectfully ie no gear sensor and shifting under power. A little Rock n roll gold every week really helps but the big killer is the sand after rain. Ride in the d...
by cycleops612
Jan 12 2017 4:36pm
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

A 3-speed IGH will work well with a BBSHD, but only if the limited choice in sprockets is suitable. The are delivered with either an 18t or 22t and, depending upon your budget, go up to 27t. I am 175lbs and ride exclusively off-road and I found that I needed more gear, eventually making a 34t sproc...
by cycleops612
Jan 12 2017 9:44am
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

I have a BBS01 in a Giant Reign and a BBS02 in a Specialised Big Hit 3 - both running at 36 volts. While I'm about 80 kegs the bike and battery and all the crap I carry commuting is about 35 kegs - and the BBS will haul me up any hill on the Perth bike path with a little bit of pedalling, so the BB...
by cycleops612
Jan 12 2017 5:27am
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

This looks not bad for you. https://www.alibaba.com/product-detail/fatboy-electric-bike-150kg-capacity-fat_60586224503.html?spm=a2700.7724838.0.0.ipKHgG they claim 150kg max load, then later 120kg, but the bike is 30kg~, which explains that. The frame is persuasive. The rear rack is integrated with ...
by cycleops612
Jan 11 2017 12:55pm
Forum: Large EV General Discussion
Topic: Faraday Future car
Replies: 39
Views: 6413

Re: Faraday Future car

I think Faraday a very apt name for a plug in EV, as it wont go far a day.
by cycleops612
Jan 09 2017 3:39am
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

A simple solution is toss the pedals. Are u really going to use them?
by cycleops612
Jan 09 2017 3:23am
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

I hear u guys re cops. I have checked it out here in sydney oz (a continent away from Perth (like LA/NYC distance~)), and consensus is u could be in trouble if u crash blind drunk into a cop car and break their windscreen. Perth is a different state but methinks eu rules apply nationally (we really ...
by cycleops612
Jan 07 2017 10:44pm
Forum: E-Bike General Discussion
Topic: Hub motor vs BBSHD for hill climbing fat guy
Replies: 27
Views: 3449

Re: Hub motor vs BBSHD for hill climbing fat guy

Mid drive.

A major issue for you is the max load of the bike.

most MTBs? are 120kg total, some, 130kg.

Another issue is street legal in Oz is only 200/250w, which equals a lot of pedaling, but still....

Maybe you should consider a motorbike?
by cycleops612
Jan 07 2017 11:37am
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

All good then OP. u r chasing some redundancy & a fun project & not fussed about power & money is an issue & u r committed to the motor anyhoo - so u have u solution & answer. re the general discussion aspect, what ifs etc., ... just saying, u get some redundancy, but what u get is 2 of the same~ he...
by cycleops612
Jan 07 2017 10:48am
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

fyi ping site: Specifications: Suitable Wattage of Motor: up to 2160 Watt (with High Rate BMS), 500-1200 Watt (with Regular BMS) Suitable Motor Controller: up to 50 Amps (High Rate BMS), up to 35 Amps (Regular BMS) Applications: E-Bike, Electric Bike, E-Scooter, Electric Scooter Voltage: 48 Volts (5...
by cycleops612
Jan 05 2017 9:17pm
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

Where am I wrong guys? If a LFP is rated for 2000 cycles (admittedly at .2c dis/charge I hear), which is so common and anecdotally verified, it cant be complete BS. i.e. a full daily charge for ~5 years, then does it really matter in real terms if we are a bit rough on them? All the pouch CELLS (if ...
by cycleops612
Jan 05 2017 5:13am
Forum: Battery Technology
Topic: 24v pack, is it 7s or 8s?
Replies: 4
Views: 549

Re: 24v pack, is it 7s or 8s?

I'm confused,, maybe reading this too early. You are building a brand new li ion pack? Then it will need a charger to out put 7 times 4.2v. It sounded a bit like you were going to replace some of the lifepo4 in the pack with li ion. don't do that. It's all good now, I am replacing all the cells and...
by cycleops612
Jan 04 2017 11:55pm
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

No comment on the lipo idea, other than it beats me why folk would take on the anachronistic time consuming hassle of balancing paks etc. I would say tho, lose the backpack. You only get one back, and u will probably live to wish u had taken better care of it. Potholes at ebike speed with a 7.5kg~ b...
by cycleops612
Jan 04 2017 11:23pm
Forum: Battery Technology
Topic: Can a ping 48v15ah do two motors? And fullriver packs?
Replies: 28
Views: 2903

Re: Can a ping 48v15ah do two motors? And fullriver packs?

So I ended up with a Ping 48V 15ah battery pack. I currently have one of those ebay 1000w front kits. *Currently works great except the BB5s are too tall for the motor casing. I have coming a ebikekit.com 350W rear geared motor kits. I've done a ton of reading on 2wd, batteries, etc... so I'm guess...
by cycleops612
Jan 04 2017 3:58pm
Forum: Battery Technology
Topic: charging 14S with 13S charger.
Replies: 5
Views: 686

Re: charging 14S with 13S charger.

Or put another way, if you have a 90% charge charger, u have an arguably desireable charger. Many would like that re battery longevity - they hate sitting fully charged. Grumble to the supplier re wrong kit & get the 2 amp (.2C) el cheapo correct charger as well - cheap. Most days, connect 90% charg...
by cycleops612
Jan 04 2017 3:34pm
Forum: E-Bike General Discussion
Topic: Advice on first kit
Replies: 10
Views: 1485

Re: Advice on first kit

The biggest single factor and the one that is never mentioned in such advice requests, are one and the same. Rider weight. Go figure?