Recent content by rkosiorek

wow, they took down the link from their website. not only that but, their support forum is also down. all that's left is a splash screen telling you to email support. I should have a copy of it here somewhere. i'll post back as soon as i find it. first i have to find a flash light. i know it's...

a generous dollop of dielectric grease or even regular Vaseline on the bit of exposed leads does wonders to keep water out of the hall sensors. it is also great for sealing connectors. it may be a little messy but once it is sealed away it does not matter. rick

ebikes.ca sells the THUN brand BB torque sensor. rick

mechanically it is always engaged. but electrically the power can be turned on and off. switched off, there is very little drag. but when switched on the dynamo is doing work so it needs energy put in. the higher the electrical load, the higher the mechanical load as well. with a small...

to really impress with techie mumbo jumbo, how about proposing a dynamo that uses eddy currents at the rim an has absolutely no physical contact with the wheel. Magnic produces such a light. http://www.magniclight.com/MagnicLight/index.php/en/startseite this video may be in German but it does...

sure you can use a motor to do that. but it is a huge energy waste using a large motor to do the work a small bicycle hub dynamo can do. Shimano and SRAM both make ones that output 6V AC @1.5W. pedaling a 300W or larger motor takes a lot more effort than a 1.5W dynamo. even without a load the...

you are very correct. but i never intended these to be used completely stand alone, unattended chargers. my purpose was to be able to quickly charge up individual cells. mostly to bring up cells to a known state of charge before assembling into packs. rick

I don't have the skills to drive a car at those speeds. But i did find a solution. In Germany there is is thing called a "Nurburgring Taxi" this is a copilot experience. A pro race driver will get you the ride of your life. Back in the 80's i rented a Porsche 959 for 3 amazing laps around the...

Just use one of these: http://www.robotmarketplace.com/products/4QDW-DCI-111.html rick

4QD manufactures a multi throttle, multi controller interface board that buffers the pots. it is usually used to interface a joystick to a pair of controllers. but it can be configured to use a steer pot with a master throttle. in that configuration the steer pot will change the power to each...

i've done a fair amount of experimenting with this and i have found that charging to a voltage is very inaccurate. what is much better is to charge the cap using a CC/CV power supply for a controlled time period. since the scr drains the cap completely when it fires the timer controls the amount...

Really, REALLY, KEWL!!! now just so I can be an unappreciative bastard.. How soon before you test it on a bike? The suspense is killing me. but really that is an impressive display of what can be built with skilled hands and a few simple tools. excellent craftsmanship. rick

I'm sorry. i don't have anything against you, or generally even against the scooters. as long as the scooters stay off of the bicycle/multi-use paths scaring the pedestrians. this was a rant brought on by my recent bad experiences with scooter owners. in your post you answered your first...

If you haven't guessed already i really dislike these scooters calling themselves ebikes style contraptions. mostly because it confuses people as to what an ebike is. locally there is talk about banning ebikes on the bike paths because of the buffoons ridding these scooter on bike paths...

Firstly, that is not an eBike. it is an electric scooter. period. face it those pedals are purely decorative. do you even have them attached? or do you ride without. add to the the weight of the thing and you have an underpowered scooter. a hub motor does not have any advantage over a geared...