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Search: Posts Made By: Doc_Wui
Showing results 1 to 50 of 1000
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Forum: Electric Bikes
09-17-24, 04:21 PM
Replies: 7
Views: 157
Posted By Doc_Wui

Since it's threaded, the allen screw on top only...

Since it's threaded, the allen screw on top only holds the handlebars tight, You have to lift off the decorative cone shaped cover, and you'll find a big fastener. Sometimes you can tighten them with...
Forum: Electric Bikes
09-16-24, 11:10 PM
Replies: 6
Views: 227
Posted By Doc_Wui

Can't answer your hotel question. We stayed at a...

Can't answer your hotel question. We stayed at a nice place last May. Rulebook said no bicycles in the condo. I put our ebikes in the enclosed porch. On a second trip, we took the folding ebikes and...
Forum: Electric Bikes
09-15-24, 10:46 PM
Replies: 3
Views: 145
Posted By Doc_Wui

I only have the standard 7 speed freewheel for...

I only have the standard 7 speed freewheel for gears on my BBS02 conversion, but I still like to pedal so I'll pick a gear for a comfortable cadence, even though the bike could be run on throttle in...
Forum: Electric Bikes
09-15-24, 10:34 PM
Replies: 7
Views: 157
Posted By Doc_Wui

Is it threadless or threaded? You use allen...

Is it threadless or threaded? You use allen wrenches on the first type and a headset wrench on the second.
Forum: Electric Bikes
09-14-24, 09:24 AM
Replies: 2
Views: 136
Posted By Doc_Wui

Building both wheels then? I believe that...

Building both wheels then?

I believe that the reason they use crossing patterns is that there's strength gained from having the spokes touch at the cross. I've read that a radial pattern, which is...
Forum: Electric Bikes
09-07-24, 08:43 AM
Replies: 10
Views: 523
Posted By Doc_Wui

We can buy a very good electric drill for $200,...

We can buy a very good electric drill for $200, Forget the App crap. I think Ryobi and Bosch could make one and sell it for less, and I think it would be a steady seller. The V-shaped roller is a...
Forum: Electric Bikes
09-05-24, 09:48 PM
Replies: 217
Views: 20,998
Posted By Doc_Wui

We're talking crosswalks here, where a bike path...

We're talking crosswalks here, where a bike path and sidewalk are combined. It's way safer to cross on the don't walk when no cross traffic is visible. If you wait for the green ;ight and walk...
Forum: Electric Bikes
08-31-24, 03:12 PM
Replies: 6
Views: 272
Posted By Doc_Wui

For about 2X the price, the electric version of...

For about 2X the price, the electric version of the M200's...
Forum: Electric Bikes
08-31-24, 07:24 AM
Replies: 6
Views: 272
Posted By Doc_Wui

Mt200's don't have switches on the brake levers,...

Mt200's don't have switches on the brake levers, but a good DIY person can add them. They're good brakes.
Forum: Electric Bikes
08-28-24, 10:52 PM
Replies: 6
Views: 272
Posted By Doc_Wui

Should be able to look at pics on ebay or amazon...

Should be able to look at pics on ebay or amazon and get what you need.
Forum: Electric Bikes
08-25-24, 01:40 PM
Replies: 5
Views: 391
Posted By Doc_Wui

You can lose the front generator, if you wish to...

You can lose the front generator, if you wish to go with a front motor, You have a battery to run the lights A rear rack battery should fit,

A mid drive kit is a better option in my opinion. It's...
Forum: Electric Bikes
08-17-24, 06:23 PM
Replies: 18
Views: 1,126
Posted By Doc_Wui

JGaerland, I use the same wattmeter. They're...

JGaerland, I use the same wattmeter. They're quite repeatable on the same unit, but a 10% variation between units is typical. They're also fragile. I have about three just quit working. Oh well, I...
Forum: Electric Bikes
08-12-24, 08:06 PM
Replies: 6
Views: 347
Posted By Doc_Wui

If you were to clamp the wheel in a vise, is it...

If you were to clamp the wheel in a vise, is it still stuck now?

A short circuit in one of the three motor coils will make it judder. If it is a geared motor, it will roll forward but not...
Forum: Electric Bikes
08-05-24, 02:40 PM
Replies: 18
Views: 1,126
Posted By Doc_Wui

How long the battery lasts is a real measurement...

How long the battery lasts is a real measurement most of us can appreciated. . This is affected by weight, tires, wind, hills, ride speed and how hard the rider wants to pedal, so everyone's numbers...
Forum: Electric Bikes
08-02-24, 11:21 AM
Replies: 31
Views: 6,037
Posted By Doc_Wui

I bought the Trail Passes for the the Mickelson....

I bought the Trail Passes for the the Mickelson. Also bought Trail Passes for Wisconsin. They do nice bike trails. Might as well get paid for them, The Wisconsin passes are stored in the phone. If I...
Forum: Electric Bikes
07-29-24, 02:30 PM
Replies: 16
Views: 1,922
Posted By Doc_Wui

Horrific way to die. A tragedy. It's not...

Horrific way to die. A tragedy.

It's not going to change my zest for ebiking, but I am aware of the battery risks. Be careful.
Forum: Electric Bikes
07-15-24, 10:57 PM
Replies: 3
Views: 364
Posted By Doc_Wui

Hi Tony, it always helps to give a location as...

Hi Tony, it always helps to give a location as that may affect what is available.

And a link or picture of the donor bike is good if you want people to give advice. Some mountain bikes have no...
Forum: Electric Bikes
07-12-24, 10:55 AM
Replies: 37
Views: 2,304
Posted By Doc_Wui

Mackinac Island is a rare case, being a town with...

Mackinac Island is a rare case, being a town with 600 fulltime residents and reportedly over a half million visitors in season per the very rich guy who runs the ferry. I can see why they don't want...
Forum: Electric Bikes
07-06-24, 12:00 PM
Replies: 8
Views: 442
Posted By Doc_Wui

Not really that odd, it is typical for the...

Not really that odd, it is typical for the battery charging port to spark when the charger is plugged in. Over time, the connector may be blackened.

To minimize it, you can plug in the charger to...
Forum: Electric Bikes
06-29-24, 10:55 AM
Replies: 7
Views: 759
Posted By Doc_Wui

Remove the battery and inspect the contacts on...

Remove the battery and inspect the contacts on both the battery and cradle for corrosion. If you leave it out in the rain, water can collect in that area and attack the nickel plating on the...
Forum: Electric Bikes
06-28-24, 02:18 PM
Replies: 19
Views: 1,475
Posted By Doc_Wui

One of my retirement hobbies is converting...

One of my retirement hobbies is converting regular bikes to electric. I've done all three motor types and done them on heavy and light donors..If If I apply my own DIY prejudices to commercial ebike...
Forum: Electric Bikes
05-27-24, 08:26 PM
Replies: 14
Views: 1,068
Posted By Doc_Wui

I worked as an EE/scientist. Now ab ebike...

I worked as an EE/scientist. Now ab ebike hobbyist and retiree. I've read the data sheets on battery cells. I've looked up the studies that are available to read. Here a chart from one of them.
...
Forum: Electric Bikes
05-26-24, 04:19 PM
Replies: 2
Views: 515
Posted By Doc_Wui

I believe the Swytch kit replaces the front hub,...

I believe the Swytch kit replaces the front hub, Don't believe they offer a rear hub motor,

If you are running LED lights, you could probably rig up a converter to power them off the Swytch...
Forum: Electric Bikes
05-21-24, 07:38 AM
Replies: 3
Views: 2,494
Posted By Doc_Wui

There are different versions for the Bk29. Some...

There are different versions for the Bk29. Some are 36V and others are 48V. In my experience with different 500W hub motor bikes, a 36V model will have a max speed of 18-20 mph, and the same motor...
Forum: Electric Bikes
05-18-24, 10:09 AM
Replies: 2
Views: 496
Posted By Doc_Wui

This seems like a mechanical fit issue. If...

This seems like a mechanical fit issue.

If the rotor is too far from the caliper, scraping the inside pads. add spacers to the caliper bracket where the horizontal bolts hold it to the frame,
...
Forum: Electric Bikes
05-08-24, 11:31 AM
Replies: 7
Views: 1,041
Posted By Doc_Wui

Looking out 20 years for a e-bicycle is pretty...

Looking out 20 years for a e-bicycle is pretty demanding. I'll be happy if I'm still alive and riding in 5 years. In the 9 years since I bought my first ebike battery, which was a 36V10Ah pack, I can...
Forum: Electric Bikes
05-04-24, 07:57 AM
Replies: 31
Views: 6,037
Posted By Doc_Wui

I've been to those places, Mickelson. Wisconsin,...

I've been to those places, Mickelson. Wisconsin, Iowa, Minnesota, gravel roads, etc, with my beater ebike conversions. Poking along at 12 mph, I don't need much power. Rail Trails were intended for...
Forum: Electric Bikes
05-04-24, 07:06 AM
Replies: 217
Views: 20,998
Posted By Doc_Wui

I was skeptical about potting the cells, because...

I was skeptical about potting the cells, because of the vent issue, but I watched a Grin ebikes Video where the mad scientist in charge tried it, The cells still vented, and fhere was less fire. I'm...
Forum: Electric Bikes
05-04-24, 07:03 AM
Replies: 8
Views: 1,366
Posted By Doc_Wui

If the rent is dented, it's toast. If it's just...

If the rent is dented, it's toast. If it's just wobbling back and forth, that can probablt be trued with a spoke wrench.

Trueing a wheel is not hard and building one is more of the same. Takes...
Forum: Electric Bikes
05-03-24, 08:59 AM
Replies: 10
Views: 1,236
Posted By Doc_Wui

I won't store any of my ebike batteries in the...

I won't store any of my ebike batteries in the house, but I could make an exception for a Specialized.
Forum: General Cycling Discussion
04-28-24, 11:58 PM
Replies: 26
Views: 1,494
Posted By Doc_Wui

-Used a crank arm puller and forgot to remove the...

-Used a crank arm puller and forgot to remove the bolt that held the arm.
-Mounting tires with the rotation arrow backwards.
-Cutting a threadless steerer tube a wee bit too short.
-Mounting an...
Forum: General Cycling Discussion
04-28-24, 11:45 PM
Replies: 3
Views: 369
Posted By Doc_Wui

I have used an XTC since 2015! One caution. Never...

I have used an XTC since 2015! One caution. Never get lazy and skip the pin on the center post/

I did that once, and the center post flipped down while I was on the freeway. Both bikes went...
Forum: General Cycling Discussion
04-28-24, 11:21 PM
Replies: 115
Views: 7,860
Posted By Doc_Wui

Used to irritate me when they didn't move over,...

Used to irritate me when they didn't move over, but kept on riding 2 abreast while yakking away on their bikes. Happens a lot around Chicagoland. Now I don't let it ruin my day,

Pretty much...
Forum: Electric Bikes
04-28-24, 03:41 PM
Replies: 40
Views: 5,217
Posted By Doc_Wui

I don't feel the excitement. Just a sadness that...

I don't feel the excitement. Just a sadness that bikes are too complicated for the American buyer..Gotta give them automatic downshifting and upshifting, plus a big motor to move it up to 20 mph, At...
Forum: General Cycling Discussion
04-18-24, 10:33 PM
Replies: 21
Views: 1,141
Posted By Doc_Wui

I like Shimano Trigger shifters as an upgrade....

I like Shimano Trigger shifters as an upgrade. Around $15-20l,
Forum: Electric Bikes
04-18-24, 10:22 PM
Replies: 6
Views: 1,248
Posted By Doc_Wui

I tried to get my wife to ride this 20x4" fat...

I tried to get my wife to ride this 20x4" fat tire ebike, but she thought it was too heavy. It was about 60+ pounds compared to her 40 lb 20x1.75" e-folder. I tried to like it, and it was OK with...
Forum: Electric Bikes
04-18-24, 10:05 PM
Replies: 3
Views: 540
Posted By Doc_Wui

Here you go. SRAM patent,...

Here you go. SRAM patent, (https://www.pinkbike.com/news/sram-patent-shows-compact-motor-x-battery-unit.html)

I count 28 cell holes, enough for a 52V7AH battery using 18650 or a 48V7AH if they...
Forum: General Cycling Discussion
04-16-24, 07:56 PM
Replies: 28
Views: 1,885
Posted By Doc_Wui

Is that 40 mile bike ride in NYC the Five Boro...

Is that 40 mile bike ride in NYC the Five Boro Bike Tour om May 5? Over 32000 riders, I've read. Five hours.

If so, have fun. Wish I was there and had a registration,
Forum: Electric Bikes
04-15-24, 10:43 AM
Replies: 3
Views: 2,149
Posted By Doc_Wui

Yikes. It's the Godzilla of ebikes. Terror on the...

Yikes. It's the Godzilla of ebikes. Terror on the bike paths. It's coming. I'm out of breath just watching it.

A couple of reliability/safety comments from an old geezer.
-Those folding stems...
Forum: Electric Bikes
04-15-24, 08:14 AM
Replies: 6
Views: 1,248
Posted By Doc_Wui

If you were a former biking enthusiast, I think...

If you were a former biking enthusiast, I think you wouldn't care for this bike, People who haven't ridden for years, on the other hand, don't have biking expectations, and will find fat tire bikes a...
Forum: Electric Bikes
04-08-24, 08:08 AM
Replies: 54
Views: 5,581
Posted By Doc_Wui

I see the purpose of the timer as a safety...

I see the purpose of the timer as a safety cutoff, in the rare event that the charger fails to shutoff. With most batteries, the BMS is what stops charging by refusing to accept any more current. As...
Forum: Electric Bikes
04-04-24, 09:25 AM
Replies: 9
Views: 1,116
Posted By Doc_Wui

"You can often tune the torque response, so that...

"You can often tune the torque response, so that it requires less pedal effort to get full power."

Yes, you can, I had tweaked up level 1 and 2, However, she said it was in the highest assist...
Forum: Electric Bikes
04-04-24, 09:19 AM
Replies: 19
Views: 1,764
Posted By Doc_Wui

Of the 3100 miles I rode last year, 560 were on a...

Of the 3100 miles I rode last year, 560 were on a regular 21 speed hybrid. This year, I am at 750/50 miles.
Forum: Electric Bikes
04-03-24, 06:21 PM
Replies: 9
Views: 1,116
Posted By Doc_Wui

My wife and I celebrate 49 years of marriage this...

My wife and I celebrate 49 years of marriage this summer. Since COvid, the two of us ride a lot more, and we get about 2400 miles together annually. Neither one of us is a hard core cyclist, but have...
Forum: Electric Bikes
04-02-24, 10:56 AM
Replies: 16
Views: 951
Posted By Doc_Wui

Yes it depends on how you use the battery. Most...

Yes it depends on how you use the battery. Most of the time, my rides are short enough that I don't go below half charge. Then I will recharge til the battery is full, unless I know I won't be riding...
Forum: Electric Bikes
03-18-24, 08:44 AM
Replies: 10
Views: 1,369
Posted By Doc_Wui

The only things I've bought from Grin is a pair...

The only things I've bought from Grin is a pair of 20" x 60mm" Weinman rims. Pretty hard to find, I think their GMAC geared motors are a flawed concept, Satiator too expensive, and their torque...
Forum: Folding Bikes
03-16-24, 10:16 AM
Replies: 1
Views: 570
Posted By Doc_Wui

Stem replacements?

I have two folders with the Downtube Nova threadless stems, and a Downtube FS8 with their 1 1/8" threaded stem. All seem pretty sturdy to me although the last one always had some play in the hinge...
Forum: General Cycling Discussion
03-15-24, 04:31 PM
Replies: 122
Views: 6,386
Posted By Doc_Wui

I learned last year that there are two types of...

I learned last year that there are two types of cyclists in the boonies. Those that carry TP and those that don't.




.
Forum: Electric Bikes
03-14-24, 09:13 PM
Replies: 10
Views: 1,369
Posted By Doc_Wui

Grin Technolog: Cheap cells are major cause of Ebike Fires.,

Grin Techbology's take on ebike fires and UL testing, March 13, 2024,

https://www.youtube.com/watch?v=j92Gt4VviSQ&t=2453s

The first part is the history , but you can skip to around the 30...
Forum: Electric Bikes
03-10-24, 02:34 PM
Replies: 217
Views: 20,998
Posted By Doc_Wui

Regarding those single bike NYC fatalities........

Regarding those single bike NYC fatalities..... We had one fall last year that was single rider, and could have been far worse. As it was, my wife cracked all her ribs on one side after hitting the...
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