Recent content by Dave Sloan

I know that when I bought my hub motor that they were all rated at 36v 500w = at least that what was stamped on the outside. Most of the people that bought these ran 56v or better batteries. These hubs all came with stainless steel spokes so that you could probably do 3500w which you may need if...

It is quite interesting what you are saying. I have read a lot on extending the life of lipo and lifepo4 batteries. I bought a drone about two years ago and the lipo batteries just do not last if they get too hot. My take on them is to make sure that they cool off before recharging and charge...

To balance the battery you require a low amp charger. To achieve this add a load using a light bulb or resistor that slows the charging rate down. Most bms load up the cells that are close to charged giving the other cells a chance to catch up. If a charger with greater then 1.5 amps is used the...

With a new DD motor on a bike it appears that there is resistance. This is probably not due to the brake regen but that the bearings are still tight. After about 1500 miles on my bike I noticed less resistance when coasting. My controller was programmed for regen when I first got the bike and I...

I tested the five different charger that I have and there is not enough current going back into the charger to run a cell phone = when the battery is plugged in first. My largest charger is 5 amps - so I can only assume these are high current - cheaply built chargers. Most of my chargers are...

I have been riding a bike like this for five years now. It is a Trek 820 with a 48v 20a lifepo4 battery measuring 13x5.5x5.5 inches. I have done an average of 30 mi at 30 mph many times. In hilly areas this usually means speeds between 23 and 45 mph. At these speeds though you had better have...

I would suggest that you get an infrared heat gun. You can get them on sale for about 30 bucks. They will tell you where the problem is/isnt. Sounds like a bearing problem - but which one? I know that after about 500 miles on my bike the wheel had less resistance/heat. The tires could be the...

Go for the NEW Trek as Dogman suggests especially if you are going for a front wheel as the 820 has the right suspension for the DD hub. For climbing hills a 20ah is minimum in lifepo4 but a 15ah a123 (only) might suffice. I use a 30 amp controller and it is plenty strong enough = 1800w peaks...

I have two 48v 20ah VPower batteries. One is five years old and the other four. The BMS on one blew last spring. It was my fault for not having a precharge resistor. I got a new different BMS from Cellman and it works great. To top up a charge with a three amp charger - wait until the red light...

Merry Christmas to everyone - especially Justin - since we would not have this thread if it was not for the early Christmas present. And Happy Holiday to everyone else. Best in the New Year and looking forward to going to the RGV now that I am finally retired and extending my Electric Biking...

A high end throttle is NOT one that when your 30 something daughter wants to try your ebike and gets so scared from the unexpected speed that she breaks the grip off in her hand and the bike surges forward at full tilt until Dad meets her around the bend and pulls the battery connectors off to...

Looks like everyone started from motor bikes including myself. The first control that I used on an ebike was a half grip. It worked OK for short rides but was not as comfortable as (I thought a full grip). After building a bike from scratch I first started with a full grip which worked quite...

Reminds me of when I used to buy GM cars because they advertised such great mileage. When my GM burnt up due to a faulty heater cord sensor I bought my first Ford. I was not looking for the mile maker at the time but it came with a display showing number of miles left and miles per gallon. After...

Probably it is because the air is less drag = thinner. As far as cooling goes - there is not much difference - less air to take the heat away.

I use a front wheel drive on two of my bikes that I use for trail riding. I think that the biggest missing component is the suspension which is needed front or rear - there is only so much you can do with a tire. I have never been a fan of too much suspension on the powered wheel as this can...