Endless Sphere

Electric motors, the ones we use, produce some cogging effect at low rpm. At higher rpm it's there but not noticeable. Cogging is normal and noticeable at low rpm. It comes from magnets and poles passing each other. Comparing direct drive with gear drive: if a DD hub motor has cogging you can feel f...

Sand Fest happened in Port Aransas, TX this past weekend. Many sand sculptures are built before the opening on Friday, the event continues through Sunday. We went on Friday and Saturday, Friday has more locals and fewer tourists. We saw a lot of fat tire ebikes on Friday, most looked like factory bu...

Extremely do-able, it should work very well. Last year I rode around 1200 miles using a front hub motor and another 900 miles using a rear hub motor. I can't tell the difference between them when riding on dry pavement. Steep climbing on dirt is different, the rear hub motor worked better. Well, a f...

20 miles each way, 40 miles total on one charge is easy to do with a big enough battery. I'm using a 20ah, 14s, 8p, 18650 cell battery, with your fitness, weight and bikes, you could easily do 30 miles each way. It's an inexpensive battery from Amazon and has never been a problem. It looks like many...

Really nice scoot and the two ebikes too. Well done! I'd sure like to ride that scooter, it looks and sounds like a good design. The battery for the Speedway IV Pro is 14s, 8p of 18650 cells, same as my ebike, it should work really well and have excellent range. A long time ago I rode a small escoot...

I ride a comfortable cadence and human power output and add some epower, using the throttle, as well to get a comfortable speed. During a ride the bodies natural power output and cadence vary depending on where you are in the natural rise and fall of your bio power output ability. In pedal riding we...

I'd sure like to ride one of those bikes.

Saw two ebikes on the street today, both appeared to be 20" or 24" fat tire bikes that had throttles along with pedaling. Both riders had big smiles as they started uphill.

That should make an excellent ebike or pedal bike for that matter.

"I'm not sure what guilt "feels like". My ex-wife diagnosed me as having a sociopathic personality.

At least, one of her personalities did. Of course, it was the personality that was manipulative, so I'm not certain I trust that opinion..."

A pretty wit, Sir

Well played

Early Specialized FS bikes had an open front triangle. So did some others. Look for a GT LTS 2 or 3, they have an open front triangle. My FS bike didn't have an open triangle. First I put the 52v, 20ah battery in a bag on top of a seatpost rack. That worked well until I stopped on a steep climb, the...

Most of the ebikes I see lately have similar tires and layout but without rear or even any suspension.

That should be a very competent bike. A throttle would be a huge plus.

A friends kit came with a very thin and loose fitting torque arm. He bought a thicker torque arm from Grin, it fit much better and has worked just fine for the last 5 years. I bought a Grin torque arm for my MAC, it looks very good and fit well but I didn't use it. To fit the bike, I built a torque ...

When I rode an Ultra equipped mountain bike having big travel and off a curb plush suspension, I did not notice any noise from the Ultra. But, my hearing is terrible and I was being amazed by the integration of torque sensor and throttle performance. If there was a crank forward, full suspension, Ul...

30 degrees is 58 percent grade. Stairs have around a 65 percent grade. If that's the case, the bike needs a geared hub motor and a Cycle Analyst V3, set the cruise control when walking next to the bike and let the bike power itself and help you walk next to it, at about 0.5 mph. The steepest streets...

There are watts calculated from climb speed and weight. There are watts needed to maintain that speed due to rolling friction and air drag. Then there are watts needed to overcome inefficiencies in the drive train, tires, wheel hubs, etc. Total watts include the preceding power requirements. Human w...

I haven't found anything interesting lately, including the crank bolt that fell out of my bike.

Pete, keep us posted on what you do and how it works.

9% is a significant grade, but it's at the end of the ride so you'll be warmed up. Road speed during the climb is a big deal, slower uses less total watts. Motor watts = total watts minus human watts. The lower the climb speed, the lower the motors share of total power output. There is a tendency to...

For decades I used a top of the rear rack bag and sometimes a backpack. When the ebike came along I put the battery in the rack-top bag. Because of ageing it became harder to get a leg over the rear bag. Also balance when stopped on a climb was a problem, the bike tended to rotate nose upward about ...

All-Axle is a front hub, GMAC a rear. When riding pavement I can't tell the which I'm using, until there are bumps. Off road front hubs break front wheel traction more often than rear hubs break rear wheel traction. Front hubs transmit shock up through the front forks to the handlebars, too much for...

Pedal power and throttle assist power work really well together. Pedal power along with throttle and cruise control power work even better together. Torque sensor pedal power along with throttle power worked very well on the Bafang Ultra mid drive bike I rode. Pedaling sensor, either rpm or torque, ...

On pedal forward bikes I've had good results with a center stand that retracts both legs to the side away from the chain. https://www.amazon.com/CyclingDeal-Center-Bicycle-Adjustable-Kickstand/dp/B07H6S3S4W/ref=pd_lpo_468_t_2/147-9891221-5360765?_encoding=UTF8&pd_rd_i=B07H6S3S4W&pd_rd_r=9d0b...

In Florida a couple weeks ago I saw a recumbent that had a rear hub motor conversion and 3x7 drivetrain. It looked pretty practical. Most ebikes we saw near or in Sebastian, FL were factory fat tire bikes, the ones that don't look like pedal bikes. Age changes things, 25 years ago I lived on the aer...

1975 Stirling City Sport 15 rigid steel frame and fork, front direct drive hub, 25 lb front wheel. 36v gel cell battery, then 48v, 13ah 18650 battery atop rear rack. This was a good riding bike, it was much like a Specialized Hard Rock. Handle bar shock was bad, same for seat shock, balance was good...

Since July I've ridden 870 miles on a 1997 FS bike with a rear MAC motor. Most riding is on paved bike paths, with perhaps a hundred miles on streets. This bike rides very well, comfort is much better than the rigid ebike I rode for 1200 miles during the first half of the year. 20 mph is a comfortab...