Recent content by knurn

Great post Teklektik, I plan on adding motorcycle signal and brake lights to my ebike this winter. The use of the opto-relay to trigger the brakes is really elegant; I was going to use a leaf switch but I’ll use your opto-driver board solution. I have a question regarding grounding of the...

Thanks again AW, I looked through your search results and it helped my understanding of the circuitry needed to use signal lights as running lights and turn signals. Below is a diagram which meets most of my needs. A relay is added as a switch to make the running lights blink when the turn...

I have a Golden Motor 901 kit (48V LiFe battery, 1000w motor) on my ebike. I added two projection LED lights as headlights. I would like to add a horn and motorcycle running lights, turn signals and brake light. These will be led lights and run off the 48V battery as the energy source. The...

What are the options for a brake light switch for regular cable operated bicycle switches? Below is a picture of one example but I do not know where I can purchase just the switch. I would also like the solution to be an easy installation.

Amberwolf, scavenging is good. The second donor bike was given to me by a neighbor. It was sitting in their back yard with flat tires and the gear shifters were not working properly. The bobber rear fender is made from two used 26 inch fenders. One oversized and the other for narrow tires. I...

Amberwolf, I used two bikes because one had a damaged rear triangle and my welding skills aren't up to the task needed to repair it. PS I posted to the topic you suggested sorry for the re-post, kn

Sorry for the re-post...I should have did a reply to this topic. Thanks Amberwolf. Here is my bike.... I used two of these donor bikes. One had a damaged rear triangle and the triple tree forks Before:

Before: I used two of these as donor bikes. One was an older model with triple tree forks.

I will try and answer this myself; please provide feedback. Since I am looking for a 48v 15 AH LiFePo4 battery pack 1c is 15A so I could safely charge the pack at 15A and the BMS will manage this at the cell level. Is this correct?

Thanks dnum, cycborg and Wes. Other than needing a charger for a 48v lifePo4 battery pack what other considerations are needed for the charger? How can I determine the maximum amperage to safely charge the battery pack?

I built an ebike years ago from a Grubee kit with lead acid batteries. I am now returning to the EV scene with a newer bike and a direct drive 1000 watt Golden Motor that I have had sitting around idle. Choices today are overwhelming - which is actually a good thing I am starting to look into...

donob08 the spokes appeared to been laced properly. All 6 spokes were broke on the sproket side and at the hub not the rim. I will look to insure the spoke hub ends are properly seated in the future. thanks, knurn

JS Tyro, the hub motor is on the front of my bike. The spokes that broke were on the back which has the weight from the 4 LA batteries. I mentioned that all spokes broke on the cassette side because I that this was possibly too much of a coincidence. Is it possible to just use better spokes or...

northernmike, I live in Cambridge, Ontario. There are a number of local bike shops here and in neighbouring Kitchener-Waterloo. The Weinmann rim appears to fine so I will consider lacing it. thanks

I have a 500W 48V Grubee front hub motor mounted on an old rigid Arashi Matrix mtn bike. The rear wheel is the original Wienmann made in Switzerland. On the rim is mounted heavy duty tube with slime and a 26 x 2.125 inch Kenda tire. Coming back from a ride today I hit a pothole that was only 2...