Search found 838 matches

by parajared
Jul 24 2018 12:19pm
Forum: E-Vehicles General Discussion
Topic: Self-balancing electric bike
Replies: 26
Views: 4168

Re: Self-balancing electric bike

Maybe for those low-slung two wheel recumbents?

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by parajared
Jul 20 2018 10:12am
Forum: E-Vehicles General Discussion
Topic: Most interesting/useful non-vehicle thing to make from a Zero powertrain?
Replies: 14
Views: 1522

Re: Most interesting/useful non-vehicle thing to make from a Zero powertrain?

i already built one that does 60mph.... :roll:

worse thing is that it could so faster but the original tires come off the rim at that speed. :mrgreen:
Well that would go well with the username "flippy" :lol:
by parajared
Jul 19 2018 5:14pm
Forum: Electric Aircraft
Topic: Zunum Aero, hybrid aircraft
Replies: 9
Views: 2504

Re: Zunum Aero, hybrid aircraft

I'm not familiar with UDF airliners but in powered paragliding the noise from the "noisy" 2 stroke motor is peanuts compared to the roar of the propeller itself.

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by parajared
Jul 19 2018 4:54pm
Forum: E-Bike Technical
Topic: What is normal voltage deviation between series connection?
Replies: 4
Views: 370

Re: What is normal voltage deviation between series connection?

What will happens with old batteries is that you get a cell (or two) that start to flake out on you. Most notably you will charge to 4.2 volts per cell and you get a cell that will only go to 4.15 or another thing that happens is that you will discharge down to 3.8 volts per cell and you will have t...
by parajared
Jul 19 2018 4:40pm
Forum: E-Bike Technical
Topic: How to correctly estimate range and maximum power
Replies: 5
Views: 538

Re: How to correctly estimate range and maximum power

When I experimented with a temperature sensor I came to the conclusion that you can overvolt and overamp the motor as much as you would like so long as you keep the motor cool (I cut off at 110 celcius). -RC hobbyking airplane motors intended for 3s overheat and seemingly run very inefficient (ineff...
by parajared
Jul 19 2018 4:14pm
Forum: E-Vehicles General Discussion
Topic: Most interesting/useful non-vehicle thing to make from a Zero powertrain?
Replies: 14
Views: 1522

Re: Most interesting/useful non-vehicle thing to make from a Zero powertrain?

flippy wrote:
Jul 19 2018 1:18pm
should make a nice powertrain for a kart, or the worlds fastest mobillity scooter....
I have my suspicions that a number of long-time endless-sphere users are going to end up with some impressively awesome mobility scooters in their later years.
by parajared
Jul 18 2018 10:51am
Forum: E-Bike General Discussion
Topic: Mid Drive OR Rear Hub?
Replies: 5
Views: 756

Re: Mid Drive OR Rear Hub?

oops, I misread that.

I was comparing "right hand" mid-drive to hub.

You are interested in a "left hand" mid-drive I think. I don't think you would want to run 7.5 kilowatts down a bicycle chain. Sorry, I have never used a "left-hand" mid-drive so I can only speculate.
by parajared
Jul 18 2018 10:45am
Forum: E-Bike General Discussion
Topic: Mid Drive OR Rear Hub?
Replies: 5
Views: 756

Re: Mid Drive OR Rear Hub?

Hub on the flatter stuff. Mid-drive on the windy, steep stuff... Mid-drives feel a bit wimpy, what happens is that when you start to exceed about 1200watts or so they wear out the components in your drivetrain. Other users report snapping chains but for me personally the biggest issue was gears star...
by parajared
Jul 18 2018 9:59am
Forum: E-Vehicles General Discussion
Topic: EV Myths - add your own!
Replies: 107
Views: 6945

Re: EV Myths - add your own!

First thing that came to mind for me was actually that high voltage / low amps somehow equals higher efficiency versus high amps / low volts.
I was about to post that. It looks like you beat me to it.
by parajared
Jul 12 2018 9:57am
Forum: E-Bike General Discussion
Topic: Legal trails?
Replies: 33
Views: 2175

Re: Legal trails?

My experiences is that mountain bikers are a generally noisy group. They frequently ride in pairs and groups and they frequently yammer as their knobby tires grind away at the trail they are riding. In the still morning desert air I can usually hear their conversations plainly from hundreds of yard...
by parajared
Jul 11 2018 3:43pm
Forum: E-Bike General Discussion
Topic: Which Laptop for Bicycle Touring ... ?
Replies: 8
Views: 654

Re: Which Laptop for Bicycle Touring ... ?

How's you eyesight, a fold-out keyboard for your smart phone maybe? That's what I would use.
by parajared
Jul 11 2018 3:17pm
Forum: E-Bike General Discussion
Topic: Legal trails?
Replies: 33
Views: 2175

Re: Legal trails?

If it's okay with you guys I would prefer to visualize mountainbiker24 as a bike hating curmudgeon who harbors deep disdain for the outdoors, fun, and the MTB community. Thank you. Hello ya salty old fist shaker you! To answer your question, I enjoy single-track here in the mountains and while its l...
by parajared
Jun 29 2018 6:14pm
Forum: E-Bike General Discussion
Topic: Any interest in a "Hybrid" gasoline kit? Supercaps?
Replies: 24
Views: 1463

Re: Any interest in a "Hybrid" gasoline kit? Supercaps?

In the 100 watt trailer scenario I'm making a lot of assumptions. 1) I assume 10 watthours per mile is really legging it for you whereas 25wh/mi is reasonable enough. The math I guessed on was 2000 watthours of deficit because 25wh/mi x 100 miles = 2500wh. Subtract about 500 watthours that you would...
by parajared
Jun 29 2018 1:47pm
Forum: E-Bike General Discussion
Topic: Any interest in a "Hybrid" gasoline kit? Supercaps?
Replies: 24
Views: 1463

Re: Any interest in a "Hybrid" gasoline kit? Supercaps?

Yep. 10 lbs and around 200-400 watts seems to be the target and also doesn't seem to exist. Here's another close but no cigar generator. It is four stroke and supposedly quieter. But it still weights over 20 lbs. As Amberwolf outline to me a while ago, with solar you probably need at least twice th...
by parajared
Jun 27 2018 11:09am
Forum: E-Bike General Discussion
Topic: Any interest in a "Hybrid" gasoline kit? Supercaps?
Replies: 24
Views: 1463

Re: Any interest in a "Hybrid" gasoline kit? Supercaps?

I believe Dogman hauls a portable generator around with him on long trips. He uses it at the campsite. I have a foggy memory of him quoting something like 25lbs. 25lbs is only about 2000 watthours of lipo battery according to my math (not sure where I'm going with that info). It's a viable approach ...
by parajared
Jun 10 2018 1:25pm
Forum: E-Bike Technical
Topic: Which motor and battery for touring rinding with some hills
Replies: 65
Views: 5736

Re: Which motor and battery for touring rinding with some hills

hi... 1: one bigger rear geard hub is better that two small 2wd. No, less reliable less traction to have one motor Yes, less weight, more stealth to have one motor maybe he will disagree but i fell 2wd is a lesser choice that a reag hub or cheap mid cyclone3000. All perfectly reasonable choices. If...
by parajared
Jun 09 2018 9:28am
Forum: E-Bike General Discussion
Topic: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?
Replies: 74
Views: 6832

Re: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?

MPGtm lol, that's great wtuber! And here I thought the lion's share of the price was in the batteries wearing out when all along it was those darned kilocalories driving up the price. I think in my work place I could calculate in the "intermittent break-room donut variable", "Jared's ...
by parajared
Jun 08 2018 2:46pm
Forum: E-Bike General Discussion
Topic: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?
Replies: 74
Views: 6832

Re: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?

^^ Hehe... "I would not have accepted store credit."... In the drive to the bottom (lowest cost per mile), electric assist not the clear winner? I would not have accepted store credit. Yeah, exactly the point. It was a pretty crappy business practice on Hobbyking's part. It wouldn't have ...
by parajared
Jun 08 2018 2:36pm
Forum: E-Bike Technical
Topic: Which motor and battery for touring rinding with some hills
Replies: 65
Views: 5736

Re: Which motor and battery for touring rinding with some hills

Cycle analyst works with a wide variety of operating voltages and amperage. If you don't have the wherewithal to keep an eye on your SOC (state of charge) you will have to set a new low voltage cutoff in the CA menu when you swap to a battery of different voltage... or don't, the 80% cut-off voltage...
by parajared
Jun 08 2018 12:29pm
Forum: E-Bike General Discussion
Topic: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?
Replies: 74
Views: 6832

Re: It's now Spring 2018.. Why haven't e-bikes gotten cheaper?

I dunno. It seems that the "super" HobbyKing battery deals are either out of stock, or they pull a "bait and switch" by listing a sale price on their search list that magically disappears when you click on the battery. Maybe some day I'll actually find one of those really good d...
by parajared
Jun 08 2018 11:46am
Forum: Battery Technology
Topic: 48 volt 1000 watt hub motor add solar ?
Replies: 6
Views: 584

Re: 48 volt 1000 watt hub motor add solar ?

I personally use a 9-panel 450 watt panel system but if I had endless money and could simply re-build it all over again I would have just bought three HQST "lightweight flexible" 100 watt panels and serialized them together for 300 watts.
by parajared
Jun 08 2018 11:41am
Forum: Battery Technology
Topic: 48 volt 1000 watt hub motor add solar ?
Replies: 6
Views: 584

Re: 48 volt 1000 watt hub motor add solar ?

In regards to Suntrip (the long-distance solar bike challenge): https://www.thesuntrip.com/presentation/our-solar-bikes/ Everyone seems to pack a fair amount of battery. 800-1100 watt hours of battery pretty much across the board. I didn't see any packs above 1100 watt hours so I presume ruling must...
by parajared
Jun 08 2018 11:24am
Forum: Battery Technology
Topic: Batteries - a better approach?
Replies: 11
Views: 1296

Re: Batteries - a better approach?

Looks great, very clean!

BLDC motors and escs last a very long time. I suspect there's a number of e-bikes where the prongs or something has enough "grab" available that you could solder on your own connectivity and get a propitiatory-locked e-bike up and running again.
by parajared
Jun 08 2018 11:14am
Forum: E-Bike Technical
Topic: Which motor and battery for touring rinding with some hills
Replies: 65
Views: 5736

Re: Which motor and battery for touring rinding with some hills

i intend to find a way to monitor the inside heat of the motor to never go above like 90 oC You said you are using cycle analyst. If you have version 3 they sell a temp sensor that plugs directly into your CA. If you are using CA v2, I find that "Traxxas on-board" works well (TRA4091). Yo...
by parajared
Jun 06 2018 5:09pm
Forum: General Discussion
Topic: Paratransit
Replies: 3
Views: 668

Re: Paratransit

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