mephisto

I like that setup, perhaps would just choose a men's bike in place. What about the gears, is the cassete something like 11-36T? Does it give a reasonable range? I was wondering it it would make sense to replace it with a wider range cassete like 11-42 or even wider up range?

this boardman bike looks nice setup like that, very discreet! What bike model is it?

did you receive the bike in the end? any VAT surprise or import tax?

I was planning to buy my kit and battery from EM3EV but so far I've been trying to ask them questions for nearly a week about parts that I want included in the kit, no response by email and facebook. I think I'm not going buy from them, if they can't answer pre sales queries, imagine post sales or customer services when something goes wrong

very detailed information, thanks. You and a few more people have mentioned to stick with BBS02 as well, I'm beginning to think that indeed that may be best cost benefit with still some fun factor included. It is difficult to judge without having both but you guys have tons of experience and it seems more logical to lean towards the BBS02

regarding LIPOs, considering all pros/cons like many have said these 30Q batteries have very good discharge rate and capacity so I think that would be my route for now

Thanks for the comprehensive answer, much appreciated! Yeah I get your point, blame that brunopower youtube video making me feel like playing with these things. I know I don't need more than 150hp on my car but I was not happy until we managed to get 430hp out of it, I can tell it is fun Jokes aside, I know it may be overkill, so I'm also considering the BBS02B as an alternative, my idea of the BBSHD is simply for an extra fun, which may be the wrong choice but I can confess it is really tempting still

cool, 30Q it is then

that would be for a 2nd project for sure, I've read a lot about it and it seems interesting, just a bit too time consuming for me at the moment considering other projects I have ok, that works for me then, so many reports like yours a lekkie sort out many of the problems with chain coming off, I'm sold on that. I'll check the other replies tomorrow, working flat out today, just got back home after 2 hours on the M25 from Kingston.

That is exactly what I was looking for thanks! Good to know the gear sensor is useful, so definitely will be on my checkout That makes sense, with my LIPOs each cell has a wire back to the charger to balance it, not sure if it just a sensor or if there is actually some sort of electric switch that the battery switch on/off depending of the voltage on each cell? another one nailed, thanks!

so the BMS itself is not always balancing the charge? pardon my ignorance as I come from a LIPO background for remote controlled cars, I use to balance charge the battery but the controller itself and balancer is in the charger. The battery only has a wire to inform the voltage delta between the cells. Is that the same way these batteries for ebikes work as well or the controller that actually balance the cells (BMS) is what actually balance them, meaning every charge is always a balance charge?

Hi guys, I'm beginning the project to convert a Carrera Kraken which is about 6 years old I believe and has been gathering dust for a while. After researching a lot I'm thinking about a mid drive motor as if later on I feel like using in another bike I can easily do. My idea was to first get a commuter bike in place as I ride a road bike every day, but it seems I can have some more fun converting first a spare bike and see how it goes offroad. I'm a bit geek so I spent the last week researching about what works best. Here are some pics of the bike: What I have in mind is to use a BBSHD and a large battery pack 52v 14.8ah (Samsung 30Q cells). Do you guys see any issues judging by the pictures and the bike model? I've come with a list of things that may be an issue: Will I have problems with chain wheel touching the rear side of the frame? Is there a aftermarket plastic/nylon sort of derailer to help keep the chain in place as I've seen some bikes using on single wheel chain? I'm thinking to begin with a 46T lekkie wheel chain, considering I use 54 on my road bike I think 46T or 42T should be a good start? How PAS works? Is it going to work based only on wheel speed using the mag sensor? What connector the 6V volt output uses for lights? I'm thinking about buying some strong LED lights so I'm wondering if there is any reayd to use solution? The gear sensor from gearsensor.com, does it really work well when shifting gears to cut off motor power? Can I connect brake and gearshift to the same cable? I have Hydraulic brakes so I'll need to use some mag sensors. What are the battery connectors like? I'm wondering if I should customise them at both battery and motor or should I follow some recipe/ready connector types? Specific tools required: bafang midrive installation tool, crank arm puller, bottom bracket remover, plastic bonder to glue brake sensors, torque tool to tighten things to the right torque I've looked at a few suppliers so far: 1- em3ev BBSHD + DCP14 = £463 Lekkie 46T £70 Gearsensor £35 52v 14.8ah 40A (14S5P) battery (30Q) £388 58.8v 5A charger with 90% switch £47 total £966 + £124 shipping = £1091 + possible £20-30 from customs 2- electronbikes BBSHD + DCP14 + gear sensor (not sure model) + hydraulic brake sensor = £625 52v 15ah 40A battery (30Q) £499 if purchase both as part of a kit with 2A charger£1050 similar to lekkie chain whell 42T £60 total £1110 shipped from the UK I've also seen eunorau-ebike.com, ebikebatteries.co.uk, eclipsebikes.com but it seems they don't offer 52v batteries. Alibaba and aliexpress prices seems similar to em3ev. I like what em3ev does to the batteries, you really know what is inside and the video that brunopower made in their factory show how much attention they have given to the batteries, that makes me feel inclined to buy from them even though it may take longer. As I'm not in a hurry that would be an option for me. I understand the weight of BBSHD is around 6.5kg and the battery another 5kg, I've got no problem with that. Some video tutorials about BBSHD installation that I'll use to guide me through the process: luna cycles #1 luna cycles #2 rev ebikes I'm open to ideas, suggestions and any general advice about problems I may face with this setup Thanks!

I'm thinking about a 52v 15ah using samsung 30Q cells, it can deliver 40A continuous. I'll post a new topic as a project for the other bike I have, it makes more sense so other people can use as reference in the future easily

not in a hurry, I'm considering em3ev as well as I can get 52v batteries with samsung 30Q I'm making a short list now with all suppliers, I've seen there is a new display DCP18, may be worth an upgrade

I'm considering the price difference and the potential to play with an offroad bike later with the BBSHD getting the kit from em3ev. I may actually convert a spare mountain bike I have here instead of playing with a road bike