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Search: Posts Made By: Doc_Wui
Showing results 1 to 50 of 989
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09-22-20, 08:18 AM
Replies: 22
Views: 761
Posted By Doc_Wui

Four years ago, I swapped a RST Crappa suspension...

Four years ago, I swapped a RST Crappa suspension fork into my Trek 830. That's a 1" threaded steerer. I was unable to cut the additional inch of thread needed on the steerer rube with my $39 die,...
09-17-20, 06:49 AM
Replies: 8
Views: 234
Posted By Doc_Wui

I think I would only need a 5nm wrench. The...

I think I would only need a 5nm wrench. The bigger bolts I can do by feel. The bike specific tools look very handy. This one has been tested a a bike group and rated accurate.
...
09-15-20, 10:44 PM
Replies: 27
Views: 820
Posted By Doc_Wui

I also found the estimate of 260K new infections...

I also found the estimate of 260K new infections not very real. Nonetheless, someone did reportedly die in Minnesota and they have a few dozen known cases. Still, it only took a couple of dozen....
09-15-20, 10:36 PM
Replies: 8
Views: 306
Posted By Doc_Wui

You really have to open the pack and check all 10...

You really have to open the pack and check all 10 series groups. A 40V output is OK for a tired pack if all ten groups are around 4.0V each.

If you have 8 groups at 4.1V and two groups at 3.6V,...
09-14-20, 01:04 PM
Replies: 5
Views: 153
Posted By Doc_Wui

They pay you? You pay them? Well, a battery isn't...

They pay you? You pay them? Well, a battery isn't much more than 8 pounds anyway.
09-11-20, 08:57 AM
Replies: 14
Views: 360
Posted By Doc_Wui

Working with my cheap hub kits, I often have to...

Working with my cheap hub kits, I often have to shorten the throttle, display, and brake cables. That's 12 splices. and if you have to do it, then you do it.

Probably four wires. That's what's...
09-08-20, 09:20 AM
Replies: 11
Views: 723
Posted By Doc_Wui

If your motor draws a lot of current, longer...

If your motor draws a lot of current, longer wires will drop some voltage and waste energy in the form of heat. You get around that by using the heaviest gauge wire that you;re comfortable with. Wire...
09-06-20, 09:47 AM
Replies: 9
Views: 937
Posted By Doc_Wui

Fat tire bikes are like a fashion statement....

Fat tire bikes are like a fashion statement. Non-riders like the looks and go for it. Veteran riders mainly saw them as trainers and work-out machines in the summer. Without electricity, the masses...
09-04-20, 01:43 PM
Replies: 12
Views: 455
Posted By Doc_Wui

The second link is impossible, They claim...

The second link is impossible, They claim 20000mah (20AH) fromt a 40 cell, 10x4 (10S-4P) pack. The accepted way to figure AH is to add the combined AH rating of the number of cells in parallel. In...
Forum: Folding Bikes
09-01-20, 05:16 PM
Replies: 21
Views: 785
Posted By Doc_Wui

Yes. Do look down the inside of the stem for a...

Yes. Do look down the inside of the stem for a fastener. Sure looks like a quill to me, and you want to be sure there is something mechanical holding it in place, and not just rust.

Nice looking...
08-24-20, 10:37 AM
Replies: 5
Views: 355
Posted By Doc_Wui

If the controller is able to take the high...

If the controller is able to take the high voltage, it's still going to try to shut off at 29V per the label on your picture. A true 48V controller would shut off around 40-42V, A 48V battery...
08-24-20, 10:26 AM
Replies: 21
Views: 1,168
Posted By Doc_Wui

LAst year was a bad year for water and my ebikes....

LAst year was a bad year for water and my ebikes. I had one inexpensive ebike get water inside the controller, but luckily I had disconnected the battery after coming home soaking wet, The next day,...
08-18-20, 04:49 PM
Replies: 5
Views: 253
Posted By Doc_Wui

You want to go from a single crank to a triple up...

You want to go from a single crank to a triple up front? The bike probably doesn't have a derailleur mount, so you 'll have to buy one of the clamp on mounts, and use a front derailleur suited to it....
08-17-20, 03:08 PM
Replies: 13
Views: 1,147
Posted By Doc_Wui

I converted a Trek 830 mtb bike 5 years ago,...

I converted a Trek 830 mtb bike 5 years ago, Steel frame made around 1991. It was not difficult. Rear hub motor, about $200. Battery on frame, about $280. I found the center pull brakes were too old...
08-17-20, 11:19 AM
Replies: 14
Views: 749
Posted By Doc_Wui

The motor is wound for a certain speed at a given...

The motor is wound for a certain speed at a given voltage. A motor intended for 36V will run a little faster on 48V, which is alright, However, some motors designed for 48V will run too slow for the...
08-16-20, 08:44 AM
Replies: 2
Views: 333
Posted By Doc_Wui

If you're OK with facebook, there's several...

If you're OK with facebook, there's several Ecotric groups there which is pretty sociable. People post pic, ask questions, brag about their bikes, ***** about problems. One is run by the Ecortic...
08-12-20, 09:53 PM
Replies: 2
Views: 260
Posted By Doc_Wui

I have a few 36V controllers. They're set to shut...

I have a few 36V controllers. They're set to shut off at 30-31volts. The battery, if left to its own devices, would probably go down to about 26volts, but unless you have something like a 36V17AH...
08-10-20, 10:11 PM
Replies: 5
Views: 576
Posted By Doc_Wui

Battery placement is difficult on DIY folders. ...

Battery placement is difficult on DIY folders. One positive about the Ancheer is the battery in the frame, but it's only 36V and maybe 10AH. A BBS02 needs 48V to run although you could get a 36V...
07-22-20, 10:02 AM
Replies: 51
Views: 2,614
Posted By Doc_Wui

I got good advice here when I did my first DIY...

I got good advice here when I did my first DIY ebike in 2015. Put a 500W hub motor on my aluminum Diamondback and was advised to use torque arms. Instead, I shifted the motor to my steel Trek, and...
07-22-20, 07:54 AM
Replies: 6
Views: 522
Posted By Doc_Wui

You might play with the air pressure to see how...

You might play with the air pressure to see how that affects handling. It might turn a little faster with higher pressure, but that also might detract from being able to ride on loose surfaces.

I...
07-10-20, 05:02 PM
Replies: 1
Views: 346
Posted By Doc_Wui

A 13Sx6P pack is 78 cells, which is close enough...

A 13Sx6P pack is 78 cells, which is close enough to your 80-ish number.

Did you really mean to say 48V 10.5AH? Divide the 10,5 by 6, and you have 1.8AH cells, which are relatively low capacity for...
07-09-20, 08:59 PM
Replies: 8
Views: 1,802
Posted By Doc_Wui

We have the 8FS, with front and rear suspension....

We have the 8FS, with front and rear suspension. Isn't a the 9FS the same? A suspension fork is considered too risky for a hub motor by many, me included. I'm not a fan of motors on a rigid fork...
Forum: Folding Bikes
07-03-20, 10:10 AM
Replies: 15
Views: 1,392
Posted By Doc_Wui

I've added a front derailleur on a bike (26")...

I've added a front derailleur on a bike (26") that had no front derailleur brackets. Being mechanically inclined, I found it was fun. Will it make a $500 folder more like a $1000+ folder? Well, it...
Forum: Folding Bikes
07-03-20, 09:54 AM
Replies: 2,342
Views: 374,979
Posted By Doc_Wui

Since Bromptom sells a front motor for their...

Since Bromptom sells a front motor for their bikes, as does Citizen, a 250W motor on rigid, perhaps Cr-moly forks must not be a liability. Being a worry wart retired engineer, I went with rear motors...
07-02-20, 02:36 PM
Replies: 3
Views: 368
Posted By Doc_Wui

Not a trivial project. You would need the same...

Not a trivial project. You would need the same controller that Juiced uses, and also have to machine the rear frame to fit their sensors they use.

Or you could buy a BB sensor, and the Cyclle...
07-02-20, 08:52 AM
Replies: 7
Views: 692
Posted By Doc_Wui

It's more than just the classes as you have to...

It's more than just the classes as you have to look at your particular state and its local regulations. A couple pf years ago, I loaded up our ebikes and drove 1200 miles to Colorafo only to find...
06-17-20, 08:02 PM
Replies: 21
Views: 1,168
Posted By Doc_Wui

What makes a kit not work? 1. When the motor...

What makes a kit not work?
1. When the motor doesn't fit in the dropouts,.
2. Motor turned out too slow. Conversely some motors are too fast for the user.
3. Crappy pedal assist, like when level 1...
06-17-20, 06:14 PM
Replies: 111
Views: 7,602
Posted By Doc_Wui

[QUOTE=Thomas15;21539127 At this point on the...

[QUOTE=Thomas15;21539127
At this point on the trail there is a road crossing so you have to stop and when they stopped one of the ladies went down like a sack of horse feed. My thinking is that you...
06-17-20, 04:25 PM
Replies: 21
Views: 1,168
Posted By Doc_Wui

It's most likely a kit that only uses freewheel...

It's most likely a kit that only uses freewheel compatible motors. THey offer to sell you a 7 speed 14-34T freewheel for $5.

I personally keep the 3 speed front derauilleur on conversions. On one...
06-16-20, 03:31 PM
Replies: 4
Views: 478
Posted By Doc_Wui

This has no effect on my riding. It's probably a...

This has no effect on my riding. It's probably a 13S-4P or a 52 cell pack.

https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/1600x1201/p1510255_76852aa67bd674b33e01f293162d73fcd5fdf8b9.jpg
06-14-20, 09:43 PM
Replies: 17
Views: 1,514
Posted By Doc_Wui

More than a leveler, it's an enabler. I don't...

More than a leveler, it's an enabler. I don't think my wife would be riding at all without electric assist. We don't go very fast, only 12-14 mph, but these small inclines that used to to stop her in...
06-13-20, 11:31 PM
Replies: 10
Views: 786
Posted By Doc_Wui

I always wondered about the funky band brake on...

I always wondered about the funky band brake on the Natko, but it;s the front that does most of the stopping anyway.. Enjoy it and have fun with the pickle ball.
06-13-20, 11:24 PM
Replies: 4
Views: 337
Posted By Doc_Wui

A suspension fork with a electric motor has a...

A suspension fork with a electric motor has a high probability of failing and throwing you over the handlebars. Don't do it.
06-13-20, 11:07 PM
Replies: 17
Views: 1,514
Posted By Doc_Wui

Oooh. Ten to twelve weeks means sixteen weeks...

Oooh. Ten to twelve weeks means sixteen weeks shipped to US, and I get it in November, Brrr.
06-12-20, 09:32 PM
Replies: 17
Views: 1,514
Posted By Doc_Wui

Cool. When do you expect to see the kits?

Cool. When do you expect to see the kits?
06-10-20, 09:22 AM
Replies: 12
Views: 1,297
Posted By Doc_Wui

Review of the earlier Swytch kit. ...

Review of the earlier Swytch kit.
https://www.youtube.com/watch?v=N_Tt4J6BLGc
Forum: Folding Bikes
06-09-20, 05:41 PM
Replies: 1
Views: 421
Posted By Doc_Wui

They're electric. Otherwise they would be not...

They're electric. Otherwise they would be not very rideable, with 4"wide tires that are 23-24" high and 60 pounds or more in in weight, There are a couple of importers bringing them to the USA for...
06-07-20, 08:03 PM
Replies: 3
Views: 330
Posted By Doc_Wui

A $75 chinese charger? I never seen one that...

A $75 chinese charger? I never seen one that expensive. Must have had too many parts so it blew up., The $10 models have hardly anything inside to fail. Seriously, battery and charger do have to...
Forum: Folding Bikes
05-21-20, 10:07 AM
Replies: 23
Views: 1,665
Posted By Doc_Wui

You may still have to add shipping for the Nova....

You may still have to add shipping for the Nova. Wonderful bike. I've had the latter for 3 years ($279 in 2017) now. All it has needed was some oil for the hinge, and I wish all my folders had the...
05-20-20, 03:23 PM
Replies: 4
Views: 322
Posted By Doc_Wui

Unit Pack Power is currently selling on amazon. I...

Unit Pack Power is currently selling on amazon. I bought a U.P.P. battery on ebay last October. I asked them to give me a price on a 48V Dolphin pack, 12AH with Samsung cells instead of their typical...
05-15-20, 02:16 PM
Replies: 13
Views: 997
Posted By Doc_Wui

Where I live ...Illinois ... electricity is 30%...

Where I live ...Illinois ... electricity is
30% Coal
54% Nuclear
7% Natural Gas
10% Wind
It cost about 13 cents for 1000WH. here.

We have ridden our ebikes 1012 miles this year, and average...
05-14-20, 12:41 PM
Replies: 5
Views: 409
Posted By Doc_Wui

Gimme any wind. What do I care. These days, I...

Gimme any wind. What do I care. These days, I love wind when I ride as it lowers the risk of catching an airborne virus off a nearby rider, walker, or whatever when riding a bike.
05-13-20, 01:08 PM
Replies: 14
Views: 1,475
Posted By Doc_Wui

Something like this one?...

Something like this one?...
05-12-20, 01:29 PM
Replies: 6
Views: 704
Posted By Doc_Wui

I thought the Decathlon 500e was something...

I thought the Decathlon 500e was something exotic, but it looks like a normal 20" ebike. We own several electric folders. Mine has close to 2000 miles on Kenda 20 x1.75's. Just tread wear. I put...
05-11-20, 10:46 PM
Replies: 4
Views: 472
Posted By Doc_Wui

Yes, the heavy ellow, green, and blue wires from...

Yes, the heavy ellow, green, and blue wires from the controller go to the same color wires on the motor cable. However, you habe the w rong connector for the six thinner wires on the motor cable.
...
05-11-20, 09:05 AM
Replies: 10
Views: 557
Posted By Doc_Wui

I been following a Walmart e-bike thread on...

I been following a Walmart e-bike thread on another forum. The customer just broke a spoke, complained, and Walmart sent him an entire wheel/motor. That's not bad for a $2 spoke, getting a whole new...
05-11-20, 08:50 AM
Replies: 4
Views: 472
Posted By Doc_Wui

Man, they cannot even spell Brainpower anymore,...

Man, they cannot even spell Brainpower anymore, Wonder if that is a real unit or a copy. Not that "Brainpower" was any good. I had two. They weren't too good. Too weak. What kind of motor do you...
05-09-20, 10:40 PM
Replies: 62
Views: 6,144
Posted By Doc_Wui

Well. it's true that electric bikes are not a...

Well. it's true that electric bikes are not a good option for the poor, not when they are selling Vado;s for thousands of dollars.

Your friend could probably buy a new silverfish battery on ebay...
05-09-20, 05:13 PM
Replies: 5
Views: 299
Posted By Doc_Wui

We still have two regular bikes. The rest are...

We still have two regular bikes. The rest are ebikes.
05-06-20, 07:09 AM
Replies: 9
Views: 659
Posted By Doc_Wui

Unless I'm mistaken, the typical consumer cannot...

Unless I'm mistaken, the typical consumer cannot ship lithium batteries legally to these rebuilders.
Showing results 1 to 50 of 989
 


 
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