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by neptronix
Aug 18 2019 3:59pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

https://www.electricscooters.com/wp-content/uploads/2017/01/electric-velomobile.jpg https://lolgifs.net/wp-content/uploads/2018/09/crying-gif.gif I love this because it's easy to be seen on the road. Looks very safe. It looks very commanding. It loses some practicality points for being a wide-ish t...
by neptronix
Aug 18 2019 3:47pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

To build a very long wheel base recumbent and/or recumbent trike that is designed for back road vehicle speeds. Read : very stable bike at high speeds for a bicycle. With a fairing around it , and or some tubing on the outside of my hips extending up to around the feet in case of a crash or even lo...
by neptronix
Aug 18 2019 2:35pm
Forum: Battery Technology
Topic: Battery pack revision for Bosch 400
Replies: 17
Views: 505

Re: Battery pack revision for Bosch 400

Your Bosch has a special communication system between the battery and bike. Therefore, you need their BMS ( unless someone's hacked it! ). You're going to need to decide whether to stick with their parts, or dismantle their proprietary system and run a DIY setup to drive the bosch motor. Unless they...
by neptronix
Aug 18 2019 1:03pm
Forum: E-Bike General Discussion
Topic: Ok, I bent the new rim... Looking for a stronger rim.
Replies: 15
Views: 976

Re: Ok, I bent the new rim... Looking for a stronger rim.

The best preventer of pinch flats and rim damage is as large of tires as you can stick on the bike, plus as high PSI as you can get.
Suspension will help do the job as well. But a large diameter of compressed air inside a tire is your best defense.
by neptronix
Aug 17 2019 11:53pm
Forum: E-Bike Build Threads / Photos & Video
Topic: DH Comp Rotomax Mid drive
Replies: 34
Views: 2460

Re: DH Comp Rotomax Mid drive

That sucks to hear :lowbatt:
by neptronix
Aug 17 2019 11:18pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

amberwolf wrote:
Aug 17 2019 5:39pm
I may have a couple, if I find them you can have them for postage.
That'd be sweet.
by neptronix
Aug 17 2019 3:47pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

My fork should be ready next week. I'll pm you some pictures; if quality is ok, I can give you the contact to the guy. Excellent. Thanks for your help so far :) Hubs are not the problem. Look for vintage shimano dura ace or campagnolo road hubs. Plenty of 80 to 90mm available. What would be awesome...
by neptronix
Aug 17 2019 3:25pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

The BikeE is getting all the love as i build it's rear tail fairing; I have never ridden a bike with a rear tail fairing before, so i'm pretty excited to give it a spin. Given that the bikeE has a ~1ft shorter frame, i immediately had weight balance issues - on pedal power, the front wheel can lift ...
by neptronix
Aug 17 2019 9:40am
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

If it helps, you can have a custom spinner fork or a suntour xcm made in china. You could ask for a suspension fork with 85-90mm dropout and use an old road hub. That should help with pedal clearance. Though the brake rotor mount will need some modding. Thanks for the idea. I'm willing to use pad b...
by neptronix
Aug 17 2019 1:13am
Forum: E-Bike Build Threads / Photos & Video
Topic: Car replacement E-bike that fits me
Replies: 28
Views: 1494

Re: Car replacement E-bike that fits me

You'd be better off mounting some new thin panel ones to a bike, for shade while riding too :mrgreen:

Your bike would benefit vastly from some aerodynamic aids. Ever considered a windwrap fairing, or even a partial DIY coroplast fairing?
by neptronix
Aug 17 2019 12:33am
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

battery-mount-2.jpg Here's the battery in reality. Not bad, i eyeballed it pretty well. I'm a tiny smidge more forward than i like though, so after moving back a hair i bet the weight is more towards neutral :/ I picked up some super flat pedals for now, so that i can move forward 4-8mm: https://ww...
by neptronix
Aug 16 2019 12:31pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

Yeah, i wouldn't ride with a fairing like that more than once. But it's the basis for some interesting ideas.. how about something like that with a lower front, a windscreen up top, and a door that you can lock and unlock? I think i'm gonna harvest some more wild urban cloroplast after work.. Anyway...
by neptronix
Aug 16 2019 10:54am
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

Just a chuckle i found via the tachyon labs page. Someone made an oil tanker fairing to protest Chevron. Kinda funny to me because a recumbent with a fairing in itself is a great path off of oil dependency. condoleza.jpg three_car_garagia.jpg I'd guess that the rider exits out the back by untying th...
by neptronix
Aug 16 2019 8:55am
Forum: Battery Technology
Topic: 20AH 48V pack using Samsung 25R + Agniusm modules + Generic BMS
Replies: 51
Views: 3688

Re: 20AH 48V pack using Samsung 25R + Agniusm modules + Generic BMS

25Rs are famous for having short lives and the differences between both vintages of cells is probably pretty big.

The BMS may need a significant amount of time at the ~4.15v range to balance them.
by neptronix
Aug 16 2019 12:06am
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

Finally solved the chainline problem once and for all with a 35T up front and a 22t middle, versus the original 32T front, 22T middle. The chain line for the front section ran at a fairly sizeable angle originally, now it's nearly perfectly flat. The problem is finally solved, and i'm much closer to...
by neptronix
Aug 15 2019 4:56pm
Forum: Motor Technology
Topic: Why would a controller cut out going uphill? (probably not battery related)
Replies: 24
Views: 618

Re: Why would a controller cut out going uphill? (probably not battery related)

Yup, i see how that could be a big problem. You should get a cycle analyst or hobbyking watt meter for your own uses in the future. It'll be like a very accurate gas gauge, tachometer, and battery -> controller diagnostic tool all in one. Either device records peak amps / peak watts, and minimum vol...
by neptronix
Aug 15 2019 4:27pm
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

Aluminum frames are fine if the motor is in the rear because the rear is around 3x stronger than the front on basically every bike. As always, you need torque arms, especially at the level of power you'll need. Aluminum front forks are a bad idea at anything other than 1/10th of the power you'll nee...
by neptronix
Aug 15 2019 10:56am
Forum: Motor Technology
Topic: Why would a controller cut out going uphill? (probably not battery related)
Replies: 24
Views: 618

Re: Why would a controller cut out going uphill? (probably not battery related)

Unfortunately it didn't substantially help the problem, controller is still cutting out. Interesting thing is it doesn't cut out when I just blast full throttle uphil. It starts only when I'm taking off from a stanstill up a very steep hill on full throttle. Once I slowly pickup speed it takes a fu...
by neptronix
Aug 15 2019 9:22am
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

Motor torque alternating with regen braking can act to loosen your nuts. Can, yes. However, with a very solid torque arm setup, this is no problem, as you prevent 99.9% of the motion of the axle.. so at worst, the axle nuts can only rotate or counter rotate a millimeter or so. Meaning that they loo...
by neptronix
Aug 15 2019 1:02am
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

Of you want strong braking, then a rear DD with regen is the ticket. it can slow you down better than any mechanical brake. I'd absolutely not run high power regen on the front though as you're liable to be thrown off forwards.
by neptronix
Aug 15 2019 1:00am
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

Torque makes twist, which is your problem. You are asking 2 tubes to do the work of 4. You will probably have torque steer at the torque you need. A front motor is a very bad option for your situation.
by neptronix
Aug 15 2019 12:47am
Forum: E-Vehicles General Discussion
Topic: How Will Electric Vehicles Be Modified in the Future?
Replies: 232
Views: 4463

Re: How Will Electric Vehicles Be Modified in the Future?

Aero mods might be possible on some of these cars. Tesla can't lock you out of that, lol
by neptronix
Aug 15 2019 12:18am
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11205

Re: High performance & durability Cannondale Semi Recumbent

So anyway, the front shock arrived, and i tested for fitment and was not surprised at what i saw. I need about an additional inch to clear the suspension fork's crowns, which is really disappointing. Because the current pedal width is 5.5 inches and would need to go up to 6.5 - isn't that ridiculous...
by neptronix
Aug 14 2019 8:49pm
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

You want a rear motor. Because you're going to gravitate towards 1500W-2000W if you have that application. That will require a larger motor that will induce a funny steering feeling into the front end. It will also cause you traction issues unless you use a super wide tire to compensate for the fact...