Search found 106 matches

by Robocog
Jan 10, 2018 2:37 pm
Forum: Battery Technology
Topic: Given 80 90 100 % what is the sweet spot?
Replies: 11
Views: 330

Re: Given 80 90 100 % what is the sweet spot?

That is a keeper reply. thanks. And seems to be what I am doing. But good to have it confirmed. I also always ride PAS, and 10 amps is max draw. My batts are ran NUDE. NO BMS. So, no full till ready to ride. But I will likely charge to 80%, then top up. I have checked per cell, even after a few nano...
by Robocog
Jan 01, 2018 11:39 pm
Forum: Battery Technology
Topic: Given 80 90 100 % what is the sweet spot?
Replies: 11
Views: 330

Given 80 90 100 % what is the sweet spot?

With a charger, that can cut off at 80 90 or 100, is 80 worth the short range, traded for longevity? Or is it better to charge to 90, and use your battery, and save the cycles? And, how does this affect the TIME lifecycle of the battery?

GA cells, but all cells should be known.
by Robocog
Jan 01, 2018 11:57 am
Forum: E-Bike General Discussion
Topic: Just finished bike ( Black Lightning)
Replies: 5
Views: 599

Re: Just finished bike ( Black Lightning)

That is dangerous looking. WOW. Does it dip the rear from rear weight? Offroad? What about torque?
by Robocog
Dec 12, 2017 12:56 pm
Forum: E-Bike General Discussion
Topic: Aluminum vs Steel vs Carbon E-bike Frames
Replies: 42
Views: 1459

Re: Aluminum vs Steel vs Carbon E-bike Frames

HEre is my recipe. NEW alum frame, full suspension, STOUT rear trangle, oversized air shock, 36 fox Talas, rc2. BBSHD. 14ah battery in custom case underslung. Onboard lock 1lb. carbon 38mm outside, 30 inside, 47mm marathon plus. ALL UP weight, 41 lbs. Goes 28 with doable cadence. 25 good cruise. I s...
by Robocog
Dec 12, 2017 12:21 pm
Forum: E-Bike General Discussion
Topic: First build questions: commuter road ebike (mid-mount)
Replies: 9
Views: 436

Re: First build questions: commuter road ebike (mid-mount)

GEt used alum bike, full suspension. Get BBSHD. Get about 15 ah. Get 42 tooth front gear. Limit your PAS to three, MAYBE four. Use thinner tires, than dirt. You will be limited to 26 mph, but it is safer, more comfy and relaxing, and easier on motor.
by Robocog
Dec 12, 2017 12:15 pm
Forum: E-Bike General Discussion
Topic: Anyone use fairings? Why not...?
Replies: 34
Views: 1130

Re: Anyone use fairings? Why not...?

I want to create a blow up streamliner JACKET. IT could have cooling channels, like our helmets. No matter your posture, you would be covered. When you got to destination, just deflate. And pack. This, in conjunction with a small front fairing, and you would have no crosswind problems, and good stre...
by Robocog
Dec 11, 2017 3:47 pm
Forum: E-Bike General Discussion
Topic: NEw tire wheel setup, 30mm int, marathon plus 45mm tires.
Replies: 0
Views: 147

NEw tire wheel setup, 30mm int, marathon plus 45mm tires.

Picked up some carbon 30mm internal width wheels, and just ordered some Schwalbe marathon plus 29er, 45mm tires. The rims, being wide, have 45 max pressure. I called the mfg, and they said, using it on pavement, with full suspension, set cushy, I could easily get away with 5 pounds more air. So, the...
by Robocog
Dec 03, 2017 10:36 pm
Forum: E-Bike General Discussion
Topic: The biggest problem at 25mph+ is rarely discussed resistance
Replies: 47
Views: 3111

Re: The biggest problem at 25mph+ is rarely discussed resist

The easy things you can do to reduce aerodynamic drag all decrease comfort substantially. The more elaborate things you can do all make the bike heavier, more fragile, more expensive in time and money, and a heck of a lot more difficult to live with day to day. My favorite solution is not to go fas...
by Robocog
Dec 03, 2017 10:15 pm
Forum: E-Bike General Discussion
Topic: Hydraulic brakes with bafang compatible cutoff
Replies: 4
Views: 193

Re: Hydraulic brakes with bafang compatible cutoff

Are there cheaper hydraulic brakes that are compatible with Bafang / BBSHD drives ? I saw https://california-ebike.com/shop/trp-zurich-high-performance-quad-piston-hydraulic-disc-brake/ Which is quite expensive. The Magura MT5E and Shimano M355 are cheaper but both have a red colored 2 pin cutoff c...
by Robocog
Dec 03, 2017 10:03 pm
Forum: E-Bike General Discussion
Topic: Best double suspension base for XC in a bafang
Replies: 16
Views: 665

Re: Best double suspension base for XC in a bafang

And, I have onboard lights and the lock fits the batt extension. It only weighs one lb. I hardly ever charge it. I can go well over 100 miles with aux batt on seatpost. It is ALMOST silent. 25 is my top cadence cruise mph. Which, with medium peddling, sips juice.
by Robocog
Dec 03, 2017 11:08 am
Forum: E-Bike General Discussion
Topic: Best double suspension base for XC in a bafang
Replies: 16
Views: 665

Re: Best double suspension base for XC in a bafang

Why not build another one, like most of us usually do ? Your ´obviously tired’ Scott Genius has broken frame? If it is only scuff and scratch, it is easy to restore. If components are worn out, it is a good reason to upgrade some. After we ride a bike for a year, we all find many things that we’d l...
by Robocog
Dec 03, 2017 11:00 am
Forum: E-Bike General Discussion
Topic: Best double suspension base for XC in a bafang
Replies: 16
Views: 665

Re: Best double suspension base for XC in a bafang

HEre is what I came up with. 43 lbs with 14.5ah batt. I has PLUSH suspension. Cushy by MTB standards. 29ers. Fully offroadable. But, built for commute. I ALWAYS pedal, so, TINY PEDALS, and a seat that has ONE perfect spot, as I NEVER get up in the saddle. And, one perfect height, so no dropper. Alum...
by Robocog
Nov 27, 2017 12:26 am
Forum: E-Bike General Discussion
Topic: Less is MOAR. power that is.
Replies: 4
Views: 319

Less is MOAR. power that is.

I am here to argue for less power. In my instance, they say 1200 watts. Some would dream of 50amp controller mods or 3000 watt motors and controllers. I say, that is foolhardy. The drivetrain is not meant for that. The bike is too heavy when equipped for speed, to handle. My bike is 42lbs with 14.5 ...
by Robocog
Nov 26, 2017 9:00 pm
Forum: E-Bike General Discussion
Topic: PAS design/ pedelecs design / control question
Replies: 25
Views: 3358

Re: PAS design/ pedelecs design / control question

Thinking abojt my idea, first think one would need is proper electric switch to cut the power on the brake lever, and maybe some progressive regen braking when further squeezed You don't need all that. JUst back pedal a smidge. Or, hit the brakes. The level of assist, is adjustable. So, like anothe...
by Robocog
Nov 05, 2017 12:44 pm
Forum: E-Bike General Discussion
Topic: PAS design/ pedelecs design / control question
Replies: 25
Views: 3358

Re: PAS design/ pedelecs design / control question

I don't mind the slow response. I hardly notice anymore. But, anything over four setting, and it would not be able to allow you to add power.

I feel guilty every time I slam the throttle. IT pegs 30 amps.
by Robocog
Oct 22, 2017 12:39 pm
Forum: E-Bike General Discussion
Topic: PAS design/ pedelecs design / control question
Replies: 25
Views: 3358

Re: PAS design/ pedelecs design / control question

I have a throttle, I have 1200 watt min. I have a 42 tooth sprocket. You don't JUSt go all PAS. First, I reprogrammed for 9 levels, on Bafang HD. Then, I went with 42 tooth sprocket. This allows a reasonable cadence up to 25 max on this system. I could go 48 tooth, and get say 32 mph max cruise, and...
by Robocog
Sep 05, 2017 7:44 pm
Forum: Battery Technology
Topic: General warning to all who make custom packs.
Replies: 12
Views: 1012

Re: General warning to all who make custom packs.

Plastic? An insulative washer? That would HELP, but not solve the problem. I figure the ends, are rather rigid, not ductile. With the kapton somewhat reaching around, so I didn't go to that measure, it wouldn't hurt.
by Robocog
Sep 05, 2017 7:22 am
Forum: Battery Technology
Topic: General warning to all who make custom packs.
Replies: 12
Views: 1012

Re: General warning to all who make custom packs.

DVDRW wrote:Im using special insulating paper 0.3mm for that.
Between series cells too.

A very fine solution. Is that hotglue between cells? I used little, and depended on the kapton wrap. Looks like you encapsulated. Nice.
by Robocog
Sep 04, 2017 11:04 am
Forum: Battery Technology
Topic: General warning to all who make custom packs.
Replies: 12
Views: 1012

Re: General warning to all who make custom packs.

Got pictures? Pack safety is no joke for sure. Peoples' lives may depend on it. Depending only on the sleeve around cells is an accident waiting to happen. It is packed into my battery tube, but, the nickel strip, was used, to solder wire to. The nickel strip, was on the outside of battery cells th...
by Robocog
Sep 04, 2017 8:45 am
Forum: Battery Technology
Topic: General warning to all who make custom packs.
Replies: 12
Views: 1012

General warning to all who make custom packs.

I made a custom pack, 14ah, using Panasonic cells. Nickel strip, soldered cells. Well, I ran the bike for a while, and no problems, then one day, it cut out, and wouldn't turn on. So, I said, I intended to dismantle the battery, check balance of non BMS pack. Better the build with fine strand copper...
by Robocog
Jul 20, 2017 11:28 am
Forum: Battery Technology
Topic: soldering vs spot welding debate
Replies: 60
Views: 3943

Re: soldering vs spot welding debate

I just came up with a brilliant idea. Spot weld, so it is in good contact, then solder, to spread the contact. You will get the best battery, if you hurry with the solder.
by Robocog
Jul 18, 2017 9:35 am
Forum: E-Bike General Discussion
Topic: Getting close to electrification. New build.
Replies: 31
Views: 2286

Re: Getting close to electrification. New build.

Well, after using the bike for some time, no long rides, till I trust it, I stay PAS. I don't go past three of nine. It gets up to 25. The amps stay at ten or under. Got a luna charger, so I can limit it to 80% charge. I can shift under power. No prob with no cutoff on brakes etc. It is just plain u...
by Robocog
Jun 27, 2017 1:37 pm
Forum: E-Bike General Discussion
Topic: Getting close to electrification. New build.
Replies: 31
Views: 2286

Re: Getting close to electrification. New build.

Well, I got my first ride. Set it to assist, level 1. Pedaled decent cadence, and it is 18 mph. Shifted to high gear, and pedaled fastish, even pace, sustainable, and 25mph. That seems fast enough. Switched to assist level 2, and I barely pedal and it is 25mph. I think usually, I will keep set to le...
by Robocog
Jun 05, 2017 4:42 pm
Forum: Battery Technology
Topic: soldering vs spot welding debate
Replies: 60
Views: 3943

Re: soldering vs spot welding debate

sand both nickel strip and batt ends. Tin both WITH flux. Blow on batt end immed. Put nickel strip on batt end, apply soldering iron and feed solder into it. IMMEDIATELY it will flow. You put more flux right? Then, mash down with a metal object, to get max contact. This will immediately start to coo...
by Robocog
May 29, 2017 1:29 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Electric skateboard motors as RC motor alternative?
Replies: 4
Views: 298

Re: Electric skateboard motors as RC motor alternative?

I was GOING THAT ROUTE, TO KEEP IT 24V TO BACKPACK, but, I neeed IT TO BE A REASONABLE CADENCE ETC. sO, I STILL HAVE THE MOTOR.