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Search: Posts Made By: Doc_Wui
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04-16-24, 07:56 PM
Replies: 14
Views: 442
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,
04-15-24, 10:43 AM
Replies: 3
Views: 265
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...
04-15-24, 08:14 AM
Replies: 3
Views: 161
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...
04-08-24, 08:08 AM
Replies: 50
Views: 2,405
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...
04-04-24, 09:25 AM
Replies: 9
Views: 469
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...
04-04-24, 09:19 AM
Replies: 17
Views: 536
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.
04-03-24, 06:21 PM
Replies: 9
Views: 469
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...
04-02-24, 10:56 AM
Replies: 16
Views: 383
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...
03-18-24, 08:44 AM
Replies: 10
Views: 568
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: 297
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...
03-15-24, 04:31 PM
Replies: 122
Views: 4,175
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.




.
03-14-24, 09:13 PM
Replies: 10
Views: 568
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...
03-10-24, 02:34 PM
Replies: 154
Views: 10,834
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...
03-02-24, 09:41 AM
Replies: 24
Views: 1,173
Posted By Doc_Wui

With regular bikes, having light/durable...

With regular bikes, having light/durable components makes a big difference, along with the weight. You want to be perfect,

With an ebike, having a motor covers up a lot of flaws. That's why there...
03-01-24, 10:13 PM
Replies: 24
Views: 1,173
Posted By Doc_Wui

Does the Giant have a throttle? Let her test ride...

Does the Giant have a throttle? Let her test ride it. You should ride it too.
02-29-24, 07:23 PM
Replies: 10
Views: 504
Posted By Doc_Wui

You must be in a bike shop. Would you take...

You must be in a bike shop. Would you take batteries from individuals to be picked up by Call2Recycle? Would they have to be in typical battery enclosures? Would you take these?
...
02-21-24, 10:50 AM
Replies: 55
Views: 3,798
Posted By Doc_Wui

Boy meets girl. Boy buys bike. Boy gets girl, ...

Boy meets girl. Boy buys bike. Boy gets girl,
50+ years later, they're still riding,
02-14-24, 10:52 AM
Replies: 30
Views: 1,272
Posted By Doc_Wui

A couple of our mopeds, if you wanna call them...

A couple of our mopeds, if you wanna call them that. Cheap ebiking,
https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/img_4612_d51c1c6b875f49e6676d3ed2402a0f0cb5da28f7.jpg
.
These...
02-11-24, 10:46 AM
Replies: 132
Views: 5,504
Posted By Doc_Wui

We'll be chugging along on sodium-ion or go back...

We'll be chugging along on sodium-ion or go back to less volatile LiFe packs in a few years, Maybe 2x-3X the volume for the former. I see that 18650 sized sodium cells are available now, and they are...
02-07-24, 12:11 AM
Replies: 7
Views: 379
Posted By Doc_Wui

All my bike conversions are ridden on pavement,....

All my bike conversions are ridden on pavement,. so I didn't have to worry about jumps and hard knocks of a battery on the frame. and never even considered the possibility that a mid motor could...
02-03-24, 12:54 PM
Replies: 9
Views: 766
Posted By Doc_Wui

People have wondered whether riding with a...

People have wondered whether riding with a throttle locked in cruise control uses less power than riding with cadence pedal assist at the same average speed, When I have tried it, the wattage...
01-14-24, 12:48 PM
Replies: 2
Views: 448
Posted By Doc_Wui

I reject on principle. Don't want my ebike to...

I reject on principle. Don't want my ebike to measure my blood oxygen, pulse, and blood pressure while I ride. If it's going to log data, have it watch the battery temperature and start blaring an...
01-04-24, 01:01 PM
Replies: 58
Views: 5,518
Posted By Doc_Wui

This is, in my opinion, one of the better...

This is, in my opinion, one of the better analysis of why batteries burst into flame. It's sometimes a charger or circuit failure. but all it takes is a random cell from a bad lot going thermal....
12-24-23, 09:55 PM
Replies: 7
Views: 590
Posted By Doc_Wui

It was pretty warm om the 21st here in Northern...

It was pretty warm om the 21st here in Northern Illinois. Around 50F. https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/1080x810/dec21_97046541afa3458732dc1b9b3084b03d16493315.jpg
12-20-23, 09:15 PM
Replies: 37
Views: 2,974
Posted By Doc_Wui

On the amason questions page, someone asked if...

On the amason questions page, someone asked if this was a geared motor and a customer answered "Yes'. I think that from its size, it looks like it's geared. Direct Drives tend to be much bigger, and...
12-16-23, 02:50 PM
Replies: 4
Views: 1,122
Posted By Doc_Wui

If it were a Trek or Giant frame, where they do...

If it were a Trek or Giant frame, where they do fatigue testing, etc .... I dunno about the little carbon shops in China that make these things. Can you trust them..
12-06-23, 07:31 PM
Replies: 76
Views: 3,848
Posted By Doc_Wui

Those jump starters are not that big, They...

Those jump starters are not that big, They contain pouch cells. I bought three of them from Walmart on clearance for around $25 each in 2015. Ran them in series to power my 36V bike. Cheap power...
12-04-23, 10:59 PM
Replies: 76
Views: 3,848
Posted By Doc_Wui

All of those Hailongs that have a space in the...

All of those Hailongs that have a space in the cradle to hold a controller only have two locking tabs to lock the battery down. They shouldn't be used upside down with half the weight of the battery...
12-03-23, 11:01 PM
Replies: 4
Views: 512
Posted By Doc_Wui

I like this one at first glance. Mid drive. Easy...

I like this one at first glance. Mid drive. Easy to replace rack battery.
.
https://sport.woot.com/offers/delta-cycle-ebike-mdrive-7-speed-6?ref=w_cnt_wp_10_13
12-01-23, 05:41 PM
Replies: 76
Views: 3,848
Posted By Doc_Wui

Many of the chinese import ebikes do use commonly...

Many of the chinese import ebikes do use commonly available batteries, even if most have moved to designs that integrate batteries in the frame.

In the DIY world, you're going to be choosing...
11-30-23, 10:57 AM
Replies: 76
Views: 3,848
Posted By Doc_Wui

With regard to the Euro directives, I would...

With regard to the Euro directives, I would assume the same ...LMT includes electric only and electric/human power.

I believe the bigger batteries will eventually have ports like cars do today...
11-27-23, 12:58 PM
Replies: 9
Views: 913
Posted By Doc_Wui

Well chosen! You can't lose with the lighter...

Well chosen! You can't lose with the lighter weight, plus the better fitting frame.
11-18-23, 01:11 AM
Replies: 76
Views: 3,848
Posted By Doc_Wui

I hope the NYC law requiring UL listed batteries...

I hope the NYC law requiring UL listed batteries on new ebikes/scooters helps. I believe that a lot of the NYC battery fires come from people who are using batteries that have been rebuilt with...
11-18-23, 12:16 AM
Replies: 23
Views: 1,514
Posted By Doc_Wui

Yes they should. Usually 210 rpm for 26" or...

Yes they should. Usually 210 rpm for 26" or larger tire diameter and 280 rpm for 20" tire diameter, With the above aliexpress vendor, they show the two rpm values for their motors. I figure they...
11-17-23, 11:20 PM
Replies: 50
Views: 2,405
Posted By Doc_Wui

It's a good idea just in case both the battery...

It's a good idea just in case both the battery and charger fail at the same time, which is unlikely, but sure seems to be common in New York City.

I try to never leave my batteries charge...
11-15-23, 10:20 PM
Replies: 8
Views: 483
Posted By Doc_Wui

Back before we had internet, I was put in charge...

Back before we had internet, I was put in charge of UL safety approvals for our company's product. Good thing I had experts in my group because I knew nothing, but I developed a great respect for the...
11-10-23, 01:23 PM
Replies: 23
Views: 1,514
Posted By Doc_Wui

He did state Origami Bull. ...

He did state Origami Bull.
https://www.origamibicycles.com/shop/p/bull

Folders are tough to find a location for the battery and controller that keeps them small/foldable. Those store bought...
11-06-23, 07:25 PM
Replies: 170
Views: 7,430
Posted By Doc_Wui

This time of year, it's wooly bear caterpillars,...

This time of year, it's wooly bear caterpillars, Run over one, and you make it rain, according to Pogo,
11-05-23, 11:01 PM
Replies: 23
Views: 1,514
Posted By Doc_Wui

I also see the 20" amazon motor kits from China...

I also see the 20" amazon motor kits from China with controller/display for under $275, as low as $250 depending on display, You get the IT4 cable harness and waterproof connectors all around, plus a...
11-03-23, 11:32 AM
Replies: 39
Views: 1,828
Posted By Doc_Wui

A few years ago, I mounted my front tube with a...

A few years ago, I mounted my front tube with a double twist in it, The tube took several years before it started to leak in one of the twisted sections. That's not so bad. I also drill out Presta...
11-01-23, 12:46 PM
Replies: 8
Views: 568
Posted By Doc_Wui

So keep posting til you get the requisite...

So keep posting til you get the requisite approval levels. You might also mention what country you post from.

I would only buy from a vendor that keeps warehouse stock in my country. not hard to...
10-30-23, 06:23 PM
Replies: 37
Views: 2,974
Posted By Doc_Wui

I was riding this bike around in the Cook County...

I was riding this bike around in the Cook County Forest Preserves back when it was warmer, I bought the Giant Rinco for 50 bucks. The motor is a Tongsheng TSDZ2B middrive, ordered from China for $262...
10-29-23, 04:06 PM
Replies: 12
Views: 969
Posted By Doc_Wui

I poke along at 12 mph and even though I ride...

I poke along at 12 mph and even though I ride cadence sensor bikes most of the time, that's fast enough in level 1 PAS that I do feel hills and headwinds.On my torque assist bike conversion, I only...
10-29-23, 03:06 PM
Replies: 8
Views: 568
Posted By Doc_Wui

Let's see your sales link. Of course, it will be...

Let's see your sales link. Of course, it will be a risk if you buy from China, but where else can you go? Maybe the risk can be minimized.
10-29-23, 03:03 PM
Replies: 128
Views: 6,349
Posted By Doc_Wui

My wife and I were riding bikes last Fall when...

My wife and I were riding bikes last Fall when some young adults yelled out, "Good going! You're an inspiration!" Ugh. That unkempt white hair, or what's left of the comb-over hanging past the...
10-29-23, 02:55 PM
Replies: 96
Views: 5,439
Posted By Doc_Wui

And after a second short ride on Day 13, plus an...

And after a second short ride on Day 13, plus an hour of blowing leaves, I am really tired. Almost sick again. Day 14 will be spent streaming Day of Thrones.
10-28-23, 11:52 PM
Replies: 8
Views: 568
Posted By Doc_Wui

It's probably a chinese parts bin ebike, so it...

It's probably a chinese parts bin ebike, so it will use a battery that other online models use, but the name TODO only comes up in a US Google for exercise bikes

For most batteries queries, either...
10-27-23, 02:15 PM
Replies: 96
Views: 5,439
Posted By Doc_Wui

Got the Covid (first time that I know of) 12 days...

Got the Covid (first time that I know of) 12 days ago. Even though I still feel weak in the knees, I want out for a ride today because at age 75, I always feel weak kneed, First 4 miles were good,...
10-21-23, 03:26 PM
Replies: 5
Views: 495
Posted By Doc_Wui

I'd buy the Ride 1Up Roaster V2, and since I was...

I'd buy the Ride 1Up Roaster V2, and since I was given $2k, I would try putting a TSDZ2B middrive on the BB and losing the hub motor. Might run OK on 36V7AH. Might disappoint.

OK, let's think...
10-21-23, 03:02 PM
Replies: 37
Views: 2,974
Posted By Doc_Wui

The Voilamart direct drive motor is not something...

The Voilamart direct drive motor is not something that fits my biking needs. It's very heavy and high power, so it needs a sturdy steel fork for the front drive version It likes to be ridden under...
Showing results 1 to 50 of 1000
 


 
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