Search results

Hi all Another newbie question here. For a 36V 500W controller (S12S/P and CST motor both from BMS battery) what cable gauge should I run from battery to controller? And from battery to lights? I'll need to run a meter on them when all the bits arrive but all LED based, most running 36V except...

Rouge trader? Spare their blushes!

Thanks D8veh

Thanks chaps. Very helpful. Mike that fuse holder is better than the ones I've found - rated for 40A. Unfortunately I am going to have to remove the battery for charging at work - thus the interest in fuses! Thanks for the tips on lights as well - good to know what others who have...

Thanks Andrew, I have a cheap DC-DC converter on order from fleabay for one of my lights (8.4V Cree), but the others I've ordered run off 20-80V supply so should be OK. Thanks for the links - that ebikes.ca USB one looks nice. Phil

Hi all, Apologies for all the questions - I've been reading away both here and over at endless-sphere, but there are still some things I'm confused about. I'm going to be building (when the bits arrive from BMSbattery) a 36V "nominal 250W (actually 500W)" CST ebike. Adding fuses seems like a...

Hi all, I've had a search and can't find anything apart from 103Alex's incredibly complex and clever wiring of lights on his bike build. I'm hoping to go with something much simpler for my first (36V) build. Detail of possible lights at base of this message I was thinking of having a switch on...

Congrats Jimod. Going up any hill at speeds of more than 10 mph is worth celebrating in my book!

Thanks to both of you for the helpful advice. Order placed with BMS. Now I just have to possess my soul in patience... I've ordered the new S12SH (http://www.bmsbattery.com/controller/667-s06-250w-imitation-torque-square-wave-controller.html) as well as the S12S & S12P to see which works out...

Hi Mike. Not quite - although it is a steel framed road bike. What are now called cyclecross, but 20 years ago would just be a standard road bike. I wanted to be able to fit mudguards, large tyres, but still have drop bars for comfort and tucking out of the frequent Scottish wind, so this was...

Thanks d8veh. No my brakes are cable rim brakes (cantilevered)

Thanks both. I've added a spoke wrench and spare throttles and hidden brake cable sensors. I hadn't thought of spare spokes - what size for a 700C (28" in BMS battery options) wheel with 36 spokes?

Hi all, I'm in the process of placing an order with BMS battery for a 36V 500W CST kit. I'm hoping to use the S12S (or the new S12SH which I'll order as well) but wondered which speed sensor & PAS to use. Speed sensor BMS seems to have 2 - one labelled for King meters, one with no labels at...

Thanks all - food for thought in all this. If I can get away with just using 1 battery as d8veh has suggested I think this sounds more straightforward for me as one who is new to this whole thing. Thanks again. Now the next challenge - moving the pannier rack forward and low enough without...

Thanks for that - I thought 20 Ah total would be a bit tight for range - one way I have just under 20 miles including some big hills. Is that 50 mile range based on flat terrain? If it is enough this would be much easier to wire in and less obtrusive. Cheers

Hi all I've been lurking for a while, and now have the important approval from the financial controller (aka she who snores in my bed) for buying a kit. I'm more or less settled on the BMSbattery 500WCST kit, built into a 700C wheel for my Surly Cross Check. Thanks to D8veh for the helpful...

Thanks Alex - very helpful pointers. Despite my bias to road bikes, particularly old steel frame road bikes I'm slowly coming round to the view that I'll need a big battery, thus a solid, slightly heavier frame is needed. Nuts. I like the look of road bikes, but think it will have to be a...

Thanks for the info on 36V vs 48v on this kit. I don't know about the OP but I found it very useful. 36V for this kit seems like it might be a better match to avoid over taxing the engine, particularly with my 15st frame on the bike plus a pannier or two.

Very handy guide for a newbie like me. Thanks for sharing Phil

Thanks all for the helpful replies. Lots to think about for me! Just to add to the fun I have lots of hills between my home and work, and the commute is 19.5 miles either way. It's beginning to sound like carrying the battery in frame might be the best option to get enough capacity. I'll do as...