anarce wrote:Wow, lots of great feedback and info to chew on here, thanks!
1. Everybody pretty much confirmed my thought that I want a 48V 15ah battery from Ping for my application. I think that and a Falcon EV bag are pretty much settled.
2. Motomech, that eBay kit actually looks pretty good - especially the price! For $100 less I could probably handle the extra 6 lbs from the DD motor instead of the geared motor. I'm not really concerned about stealth. I see that this kit comes with a 6 gear freewheel though as opposed to the 7 gears I have now. Will my stock derailleur be compatible? Will I be able to pedal at 20 mph or higher, or would I have to change the crank gears to keep up? I don't have much experience with bike gearing and maintenance. I've worked on cars a lot, but not so much with bikes.
3. d8veh, the brake switch options look interesting. I'll look into that and consider whether to do switches or change to separate shifters/brakes. If I get the eBay kit and use those brakes, how much do you think it would cost to get some separate shifters? My Trek has Shimano gear and is a 21 speed.
anarce wrote:Do I really need the motor cutoff on both brake levers? I never brake with just the front, so it seems like I could leave the combo shifter/brake alone on the left, put the e-brake lever on the right and just buy 1 new shifter.
d8veh wrote:If you have integrated brakes and want to keep them, it;s no problem to make brake switches. That's all they are: switches that switch on when you brake. There's several solutions depending on how much work you want to do. Here's two simple methods:
Method 1: tape a reed switch to your frame cross-tube; fix a speedo/cyclecomputer magnet to the bare inner cable along the cross tube. When you brake, the magnet moves over the reed switch and switches it. You have to experiment a bit with the position of the magnet to get it to switch at the right point. This method is not so easy for the front brake because you need to make a bracket to hold the reed switch.
Method 2: Buy two of these light/horn/indicator things; cut off the little switches that clamps on a cable. They operate the brake light that you don't need, so cut off the connector from your kit's e-brakes and join the wires. Fix it to your cable and that's it. If you hunt round on Ebay, you can find them a bit cheaper than this
http://www.ebay.co.uk/itm/3-1-Bicycle-B ... 2314c5cab4
HAROX wrote:I don't mean any disrespect here, however the paths you're referring to, from Chatfield all the way downtown are multi-use, including runners, and AFAIK, all are posted 15mph. I've been using them constantly and see injuries, many from excessive speed. I remember one, a nice person with half her face ripped off. All she could say was "it all happened so fast..." Good thing she was just a block from DGH where I'm sure they stitched her up for all her $$$$$$$.
dogman wrote:Ebrakes are not needed. Chances are you are smart enough to let go of the throttle when braking.
dogman wrote:Let me make this moronicly clear.... yes you do need some kind of way to kill the bike... Yes you really do, but it does not HAVE to be in the form of brake cutoffs.
Sorry if poor choice of words made it sound like nothing that kills the bike is needed. I mentioned two alternatives to ebrakes, but wasn't very emphatic that a way to kill the bike is mandatory. It seemed fairly obvious. Throttles can stick, or short into wot, so do have a way to kill the bike.
My method is just pretty simple, easily reached and unplugged battery wire. One swipe with a hand at my seatpost and it's not just off, but disconnected from power.
dogman wrote:Reading back, the original poster never asked about or even mentioned ebrakes anyway. Another thread highjacked.
anarce wrote:My bike:
I have a stock 2007 Trek 820 that I like a lot for general riding. Nothing fancy, but it fits me well and I'm comfortable with it. From reading on here, it sounds like it's actually a good candidate for conversion since it's a steel frame and all. One drawback is that the shifters and brakes are all one unit, so it would not be simple to swap to e-brakes. I don't know if this is a big deal or not.
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