Search found 188 matches

by pullin-gs
Jul 27 2020 1:22pm
Forum: E-Bike Technical
Topic: Problems with a hub motor
Replies: 7
Views: 236

Re: Problems with a hub motor

I counted at least 5 spoke holes that are gone due to chunks gone from case on the left side alone. Well spotted, the other side of the is exactly the same. It was almost free :wink: I've physically it restored by drilling new spoke holes 1/2 way between the original spoke holes and re-laced it wit...
by pullin-gs
Jul 26 2020 1:36pm
Forum: E-Bike Technical
Topic: Can I make my bike use only the odd gears?
Replies: 4
Views: 179

Re: Can I make my bike use only the odd gears?

speedyebikenoob wrote:
Jul 23 2020 9:07pm
Will the derailleur be able to accommodate the jump in size between the gears since they aren't as close in diameter anymore? Sorry I don't know much about these bikes.
It might make a little more noise while shifting, but should be okay.
by pullin-gs
Jul 26 2020 1:32pm
Forum: E-Bike Technical
Topic: Problems with a hub motor
Replies: 7
Views: 236

Re: Problems with a hub motor

That motor is ready for the parts-bin anyway. I counted at least 5 spoke holes that are gone due to chunks gone from case on the left side alone. The right side is missing more spokes it looks like?
by pullin-gs
Jul 04 2020 11:19pm
Forum: Battery Technology
Topic: Solar panel charging question.
Replies: 4
Views: 128

Re: Solar panel charging question.

I took another approach. Instead of mounting panels on trike I just use them to charge battery. I plug up when I get home after each ride. 100W panel works nicely for my packs (I have two 8AH 12S packs). Panel is mounted to outside of garage wall. Charge controller (programmable for lithium chemistr...
by pullin-gs
Jul 01 2020 10:32am
Forum: Battery Technology
Topic: Spim08hp 3.7v 8ah 200amp cell
Replies: 21
Views: 811

Re: Spim08hp 3.7v 8ah 200amp cell

This is what I settled on for connecting cells together for 1P packs. Ive built an 10S, 11S, and 12S pack using this "clam-clip"method. "clam-clip" method These packs have been in heavy service (30-amps maximum) for my daily-driver pack for past 6 months: IMG_0708.JPG https://www.youtube.com/watch?v...
by pullin-gs
Jul 01 2020 10:21am
Forum: Battery Technology
Topic: Spim08hp 3.7v 8ah 200amp cell
Replies: 21
Views: 811

Re: Spim08hp 3.7v 8ah 200amp cell

Tabs are only 3/8" long......and cell is 1/4" thick.
Any attempt to bend cells over each other will ruin cells.
by pullin-gs
Jun 28 2020 5:30pm
Forum: E-Bike Technical
Topic: Increasing top speed by overvolting?
Replies: 19
Views: 655

Re: Increasing top speed by overvolting?

I'm a big fan of overvolting. Be careful though because you can fry your electronics&motor if you overdue things too much. Familiarize yourself with a motor analyzer tool where you can input motor specs, battery, controller information and test "what if" overvolting scenarios. I use ebike.ca's motor...
by pullin-gs
Jun 22 2020 7:37am
Forum: E-Bike Technical
Topic: Geared hub motor threw a magnet......
Replies: 3
Views: 274

Re: Geared hub motor threw a magnet......

Well it took a few months....but I finally got around to fixing old motor. I used Loctite EA 9394. It is pretty expensive, so I waited for a good deal and got a 50ml mix for about .10c on the dollar. Rated for almost 400 degrees, has a working time of 90 minutes before it starts to thicken. I went a...
by pullin-gs
Jun 03 2020 10:16pm
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1433

Re: E-bike or E-motorcycle?

ddk wrote:
Jun 03 2020 5:53pm
For some reason, people laugh when I call my 'other' trike a velomobile!
...dunno why that is...my other trike part 2.jpg
...or pray!
Its the E-popemobile! :D
by pullin-gs
May 31 2020 3:39pm
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 39
Views: 690

Re: Would like to make an eTrike less prone to tipping over

As you have already mention, keep CG as low as possible. And riding technique will keep you right-side up as well, which is a learned skill specific to trike your model/build. My first trike was a Sun....it was OK, but the model I had was prone to tipping over and I sold it shortly after I bought it...
by pullin-gs
May 31 2020 11:54am
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1433

Re: E-bike or E-motorcycle?

Do you think an e-trike would feel stable at 30-35mph on a gravel bike path? No. 20MPH max on gravel. My trike is quite stable on paved surfaces up to about 25MPH. Things get twitchy for anything over this. 30MPH+ is dangerous and asking for trouble on my setup. A longer wheelbase trike that the on...
by pullin-gs
May 29 2020 7:50pm
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1433

Re: E-bike or E-motorcycle?

CONSIDERABLE SHOUTING wrote:
May 29 2020 6:42pm
That's pretty neat. The Viper's cool too!
Unfortunately the dodge sees less action than the e-trike does!
https://www.youtube.com/watch?v=mD_mHqUxeXw&t=102s
by pullin-gs
May 27 2020 4:11pm
Forum: Battery Technology
Topic: Any lipo checker that is not powered only from first cell?
Replies: 17
Views: 412

Re: Any lipo checker that is not powered only from first cell?

General Lithium Ion/Poly voltage levels @ 1C discharge relative to percent of capacity avaiable: 100.00% 4.2 90 4.13 80 4.06 70 3.99 60 3.92 50 3.85 40 3.78 30 3.71 20 3.64 10 3.57 0.00% 3.5 Running an LCD voltage monitor for five hours will utilize (10Ma load on cell#1) 1/2 of one percent of total ...
by pullin-gs
May 27 2020 1:34pm
Forum: Battery Technology
Topic: Any lipo checker that is not powered only from first cell?
Replies: 17
Views: 412

Re: Any lipo checker that is not powered only from first cell?

A switch wouldn't really help in my application because I'd like to use it while riding Exactly....turn it on when you ride, turn it off when done with ride. But it would probably still drain too much current while riding to cause small cell imbalance I guess. Not true....they only draw about 50MA....
by pullin-gs
May 27 2020 12:48pm
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1433

Re: E-bike or E-motorcycle?

This 28Mph e-conversion project was engineered with a focus on value, performance, and stealth. My build does not look like its e-powered. It is also very quiet. Motor wheel swaps out for standard wheel: Still provides efficient PEDAL-ONLY option for fitness rides without sacrificing my speed (human...
by pullin-gs
May 24 2020 11:24pm
Forum: E-Bike General Discussion
Topic: Are 3.7 8ah LiPo batteries 25c 200A super cells good for ebike
Replies: 36
Views: 5762

Re: Are 3.7 8ah LiPo batteries 25c 200A super cells good for ebike

I was just following this thread but I will follow up here and let you know when the batteries here I and what's going on what shape but they seem too cheap to be true which is I don't know. But there's some reason there's a ton of these to be sold new and used They are surplus cells from hybrid bu...
by pullin-gs
May 24 2020 11:04pm
Forum: Battery Technology
Topic: Any lipo checker that is not powered only from first cell?
Replies: 17
Views: 412

Re: Any lipo checker that is not powered only from first cell?

Put a switch on first input wire to lipo checker.....just turn it off when not in use and it does not draw current.
by pullin-gs
May 23 2020 5:53pm
Forum: E-Vehicles General Discussion
Topic: Time to drop a cell (or two?) from my packs? Speed is getting a bit much.
Replies: 3
Views: 387

Time to drop a cell (or two?) from my packs? Speed is getting a bit much.

I've had a ton of fun with my etrike for past year, upgrading it and getting faster along the way. Currently trike does 28MPH (faster if conditions are right). Those speeds can do some serious injuries? Either I need to gear up or slow down. :-( FYI I also own a motorcycle: When I ride I ALWAYS wear...
by pullin-gs
May 20 2020 10:20pm
Forum: E-Bike General Discussion
Topic: Are 3.7 8ah LiPo batteries 25c 200A super cells good for ebike
Replies: 36
Views: 5762

Re: Are 3.7 8ah LiPo batteries 25c 200A super cells good for ebike

I've been using them for over two years now.
Built a 3S3P pack for my e-kayak.
an 11S and 12S for my two etrike projects.
I find them very reliable and as safe as any quality LIPO pouch cell.
https://www.youtube.com/watch?v=mD_mHqUxeXw&t=102s
by pullin-gs
May 13 2020 12:46am
Forum: E-Bike General Discussion
Topic: Question about making recumbent e-trike
Replies: 21
Views: 572

Re: Question about making recumbent e-trike

I also built mine from scratch. Took a budget&minimalist approach though. My trike build is dialed in for 25MPH for entire ride....It will do 30 under right conditions (fresh pack, no head wind, etc.), but I rarely take it that fast. My favorite cruse speed is around 20MPH which gives good economy w...
by pullin-gs
Apr 28 2020 11:03pm
Forum: E-Bike Technical
Topic: Why does my 36v e- bike cut off when I put a 42v silver fish battery In place of the 36v silver fish battery
Replies: 15
Views: 474

Re: Why does my 36v e- bike cut off when I put a 42v silver fish battery In place of the 36v silver fish battery

My controller works great on 10S 36V pack. It also works great for 13S 48V pack.
The controller auto-adjusts LVC for either a 10S or 13S pack.
However 12S is not so great......unfortunately it adjusts LVC for a 13S pack.
So over 4V (13*.33V) is left on the table.
by pullin-gs
Mar 22 2020 1:26pm
Forum: E-Bike Technical
Topic: Geared hub motor threw a magnet......
Replies: 3
Views: 274

Re: Geared hub motor threw a magnet......

Thanks.....Loctite 9460 Hysol.
I'll give this a try.
by pullin-gs
Mar 22 2020 9:36am
Forum: E-Bike Technical
Topic: Geared hub motor threw a magnet......
Replies: 3
Views: 274

Geared hub motor threw a magnet......

One of the magnets on my motor came unglued.
Anyone ever have any luck gluing them back with epoxy?
Motor is geared Q128C hub motor....magnets are on armature.