Search found 57 matches

by niwrad
Feb 17 2020 9:48am
Forum: E-Bike General Discussion
Topic: Direct Drive Gearless Hub Motor Drag Technical Q
Replies: 18
Views: 2170

Re: Direct Drive Gearless Hub Motor Drag Technical Q

Should be good. Neptronix makes a good point: 16 inch wheel. Geared motors don't give you multiple gears, they just allow the motor to operate at a faster speed than the wheel, which (I'm sure you've already figured this out) is what you're already getting with a 16 inch wheel. The lady of the hous...
by niwrad
Feb 15 2020 7:49am
Forum: E-Bike General Discussion
Topic: Direct Drive Gearless Hub Motor Drag Technical Q
Replies: 18
Views: 2170

Re: Direct Drive Gearless Hub Motor Drag Technical Q

There is a lot of good info above...I am just attempting to add to it. Not sure where you are with your project but the GMAC geared hub motor has some advantages compared to a Direct Drive motor...lighter, more torque, and it has regen. It actually a Geared Direct Drive Hub. Disadvantage is that if...
by niwrad
Dec 07 2019 8:34pm
Forum: E-Bike General Discussion
Topic: Regen
Replies: 41
Views: 2464

Re: Regen

I think the regen% on CA should be interpreted best as, 'how much larger battery I would have needed', i.e. if you recover 100% of your energy then you would have infinite range, which makes sense. So if I run dry and had 15% regen, then without regen I would have only made it 85% of the way home, o...
by niwrad
Oct 24 2019 7:11pm
Forum: E-Bike Technical
Topic: Mixing old & new batterys grin LiGo
Replies: 1
Views: 300

Mixing old & new batterys grin LiGo

Hello, I was wondering if there's any particular way to arrange batteries to make a pack when having old and new ones. For reference using the airplane portable LiGo from Grin. Each one has two pairs of positive and negative terminals. I've used four of them together for about 2 months daily, using ...
by niwrad
Oct 17 2019 9:30pm
Forum: E-Bike Technical
Topic: Field weakening, how does it work from battery draw
Replies: 1
Views: 296

Field weakening, how does it work from battery draw

Hello all, have phaserunner with field weakening feature. was wondering what the setting means- 0-x AMPS for field weakening. To my understanding, more amps means more field weakening. Just to clarify, is more amps means more amps drawn from the battery? If so, is this in addition to amps required f...
by niwrad
Oct 14 2019 8:53pm
Forum: E-Bike General Discussion
Topic: Fast Ebike for a tough commute
Replies: 59
Views: 3873

Re: Fast Ebike for a tough commute

matmaxgeds wrote:
Oct 14 2019 10:05am
You are waiting for a different non-freewheel geared motor to this one? https://www.ebikes.ca/product-info/gmac.html
Yeah, I emailed Justin already. I need the Brompton version, the one listed is used with standard 10cm dropouts but I need their narrow motor
by niwrad
Oct 14 2019 8:52pm
Forum: E-Bike General Discussion
Topic: Why not comfort bikes?
Replies: 87
Views: 6472

Re: Why not comfort bikes?

I would go with suspension is not as needed depending on the rider and ability to navigate around potholes and ability to stand and flex both knees and elbows over potholes.

That said, I am looking to get more suspension by modifying what I can
by niwrad
Oct 13 2019 7:51pm
Forum: E-Bike General Discussion
Topic: Fast Ebike for a tough commute
Replies: 59
Views: 3873

Re: Fast Ebike for a tough commute

I can see why regen braking can be unpopular. I am currently waiting for a fixed clutch geared hub motor to be available within the next 6 months to solve the weight problem, as the large direct drive motors are indeed heavy. However as for pedaling with the motor off, I've done it a few times and i...
by niwrad
Oct 02 2019 7:00pm
Forum: E-Bike General Discussion
Topic: 43 mph unicycle...who's faster?
Replies: 29
Views: 1310

Re: 43 mph unicycle...who's faster?

I'm really interested in the electric unicycle. It's a very interesting vehicle for multimode transport. You can't get lighter or smaller than just having a single wheel. I can see it being better than those electric kick scooters since the large format wheel allows it to handle potholes more easily...
by niwrad
Oct 02 2019 6:54pm
Forum: E-Bike General Discussion
Topic: Show me your front light(s)
Replies: 41
Views: 3596

Re: Show me your front light(s)

I got this for $20 from ebay. Called NovSight Bicycle Light

has cut-off so it limits brightness to horizon or below 140 lux at 10 meters

https://imgur.com/a/eXWllrd
by niwrad
Sep 28 2019 9:26pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1248
Views: 260059

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Hello all, I've been using the freewheel function on the phase runner. Makes me feel like I'm always gliding downhill which is great. However I noticed that's a very high pitch whine that occurs whenever the motor is producing power. It's not very noticeable over wind noise but it is easily picked u...
by niwrad
Sep 28 2019 11:29am
Forum: E-Bike General Discussion
Topic: Fast Ebike for a tough commute
Replies: 59
Views: 3873

Re: Fast Ebike for a tough commute

I bike everyday and average 14 mph, top speed 40 with pedaling. Use about 15 w-h/mi. If you are fit enough you can definitely make an ebike that can reach 40 for 40. Regenerative braking is a must, I get an additional 17% range with my high power setup, and even more if I derate the maximum speed. M...
by niwrad
Sep 22 2019 8:58am
Forum: E-Bike General Discussion
Topic: Tiny 250 W hub motors
Replies: 12
Views: 797

Re: Tiny 250 W hub motors

i think a rear motor is gonna wheelie and toss you off going up a hill
by niwrad
Sep 02 2019 8:40pm
Forum: E-Bike General Discussion
Topic: pedal assist or scooter?
Replies: 8
Views: 633

Re: pedal assist or scooter?

The cycle analyst has a variable power assist option, which increases the level of assist with cadence, so higher pedaling speeds leads to higher assist. I use this to give a baseline level of assist which helps to offset the increased wind resistance. Since wind resistance scales exponentially I al...
by niwrad
Aug 14 2019 6:31pm
Forum: E-Bike General Discussion
Topic: Carteret NJ Police get the E- Grin
Replies: 7
Views: 457

Re: Carteret NJ Police get the E- Grin

NJ and the NYC area are getting more ebike friendly as it's pretty clear most people want to be able to use ebikes because no one really wants to self propel themselves if they just can have a car do it for them. They've passed some laws that are legalizing ebikes slowly in NYC throughout 2019 I act...
by niwrad
Aug 12 2019 8:22pm
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 270
Views: 17739

Re: Hub motor industry dying?

to add in my experience, using the grin hub motor hasn't caused any problems with the local police, and I more or less see them every single day, multiple times a day. For context though, my system is entirely pedal assist so I more or less fly under the radar this way
by niwrad
Aug 09 2019 9:41pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

Got home and still managed 20% regen despite using more power for higher average speed. Sub 40 minute commute now

https://imgur.com/a/ygaNQfT
by niwrad
Aug 07 2019 10:11pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

Ah okay fixed my post

according to Grins user manual it’s 1.000 mOhm so it should be correct already.
by niwrad
Aug 07 2019 3:59pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

i never really understood how you use throttle and pedal assist at the same time though
by niwrad
Aug 07 2019 12:21pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

Yeah I have it set up so my bike is solely controlled by pedal assist and an AUX input which changes the degree of assist. I think I use about 300-400 watts while traveling around 20 mph. I estimate that I can continuously output 200 watts depending on what kind of incline I put into the Grin Tech s...
by niwrad
Aug 07 2019 8:04am
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

I’m using the CAV3 with the direct plug into the motor controller. Also I plugged in my battery and the electrical readout said 0 amps. Left the shunt value at the default 1 mOhm.
by niwrad
Aug 06 2019 7:42pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

edit: nevermind, but will see to re-zero it
by niwrad
Aug 06 2019 7:32pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

nope, riding the urban jungle of NYC. Tallest incline is either the Manhattan or Brooklyn bridge
by niwrad
Aug 06 2019 7:29pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Re: Maximum normal regen? Is CA V3 correct?

flat tire wrote:
Aug 06 2019 7:27pm
This is the exact same question with the exact same data as your other thread. Same answer. It's probably high, depending on the specifics of your ride.
what other tread? Maybe you're confusing me for someone else, this is the first time i posted here about this Q
by niwrad
Aug 06 2019 7:15pm
Forum: E-Bike General Discussion
Topic: Maximum normal regen? Is CA V3 correct?
Replies: 17
Views: 665

Maximum normal regen? Is CA V3 correct?

Hello all

I've started my daily commute with my finished DYI ebike kit along with a cycle analyst V3. Someone said that the regen I'm getting is unrealistic. Is this correct or is there something potentially wrong here?

cycling thru CA stats in link
https://imgur.com/a/ygaNQfT
(22%)