robintb

That's good, cos I made a mess! Thanks for all the collective help

Last one on this, so how much does it matter with the shunt mod if I'm a bit messy with the soldering... Basically I didn't go more than 2/3 up the leg, but it was thicker then just a bit of tinning.... Definitely blobby

Thanks Wheelie Pete. So have just done the shunt mod! I went about 2/3 up one of the legs of the shunt (only 1). So about 20-25% of total length I reckon...immediate improvement noticeable on hills, and pick up is much better. Thanks for all the help here - lets hope I haven't overcooked it

It doesn't feel like the same power on all levels at low speeds - if I bump up through the PAS, it pulls harder from take off, rather than it being just as powerful in PAS1 as PAS5 at low speeds.... Maybe I'm just being a newbie on this though....

Righto, thanks for that. have been slowly trawling through it now....presumably it only reduces range when its being worked 'hard' i.e. PAS5 when I try to push it trying to get up hills. Otherwise, on the flat, I'll be able to lower the PAS level for the same drive as before the mod and therefore retain similar current draw in these moments?

Thats great, thanks! I think I'll try the shunt mod first and if I kill it, I'll go for the KT controller. Where's the best place to get it/is KT the brand or just the protocol? ebay seems a bit random....

Hi Vfr, Will I lose top speed with this mod or just gain grunt at low speeds? Capped at 15mph here so don't want to lose any of that......

ok! just watched a video on someone doing this.....looks doable....any other side effects of doing this?

Thanks NealH.... I have no idea about how the controller achieves this, but will try your suggestion of PAS1 or 2 on hills, not sure I quite understand why this might be (!) but happy to give it a go!

I have a 2014 Batribike granite pro with a 250w rear hub motor (see photo)- can anybody tell me is this likely to be a geared motor or gearless? Can't see a model number.... I'm also wondering if the motor is up to full strength - it struggles on steep hills on maximum assist - is this normal? I'm not that heavy but am I expecting too much? The battery has just been re-celled by Jimmy at Insat, so no problems there.... The other thing I'm wondering about is regen braking - I live in a super hilly area, so I've read you can retrofit regen braking if the controller and motor are suitable....The controller is made by DMHC and has a couple of extra wires (black/purple) which I wondered whether they were for hooking up regen.... Be useful to reduce brake pad wearing, if not for actually charging the battery! Any advice greatly appreciated!

I have a 2014 Batribike granite pro with a 250w rear hub motor (see photo)- can anybody tell me is this likely to be a geared motor or gearless? Can't see a model number.... I'm also wondering if the motor is up to full strength - it struggles on steep hills on maximum assist - is this normal? I'm not that heavy but am I expecting too much? The battery has just been re-celled by Jimmy at Insat, so no problems there.... The other thing I'm wondering about is regen braking - I live in a super hilly area, so I've read you can retrofit regen braking if the controller and motor are suitable....The controller is made by DMHC and has a couple of extra wires (black/purple) which I wondered whether they were for hooking up regen.... Be useful to reduce brake pad wearing, if not for actually charging the battery! Any advice greatly appreciated!

Hi Gordon That's a great tip will check the fuse Thanks!

Thanks for the help. Will test after next charge, assuming it does!

Hi, Apologies if the info I'm after is already distributed about this wonderful forum but thought I'd ask some specific questions... I've just bought a 2014 Batribike Granite Pro, with a supposed dead and totally unresponsive battery, or at least one that needs re-celling, however on getting it back, plugging the charger in, the following happened: First off, it wasn't interested in charging, but when I switched the battery to the on position (on the actual battery), the red charge light on the charger came on. I wasn't sure how safe this is (??) anyhow, I switched it back off but left it connected to the chrager which then showed green. After 20minutes, I decided to put the battery back on the bike, and there was power to the computer! Whats more, I just took it for a 3-4 mile ride! So I was totally unexpected that it works at all. So this brings me to several questions...I understand that some of the battery cells might be dead or on the way out, and therefore could it be that the BMS is intermittently allowing voltage in/out? Whilst riding it, the computer showed 5/5 bars of juice for nearly the whole time, occasionally dropping to 4, yet the battery charge indicator on the actual battery is red (<30%). Whats the craic here? The power cut out twice while riding it - I repowered and away I went again. So I'd love some helpful thoughts on whats going on here....I suspect the battery is on its way out ( its done 1400miles but probably been left idle in a state of discharge for some time) and needs investigating, but also its now hapilly charging (red light on charger, battery switch is off this time). Thanks! Robin