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It will depend on how fast you ultimately want to go. Most of the hubs have quite a fast 280 - 300rpm winding speed, whether 36 or 48v. My hub is 36v 280rpm however I also run it at 48v which increase the winding 25 - 30%, 28/29 mph has me spinning out with 48/11t gearing. A 36V hub run at 48v...

I guess 31kg unladen is already quite heavy. My Boardman originally only started out as a frame with sus forks which I picked up from Brighton, so starting weight was about 4.5kg. End of the day unless you are going to have to carry the bike or ride unassisted weight won't have any baring...

If not bothered about legal marking could have gone with 350w Yose hub kit from Berlin for < £190. My one @17a & 48v goes vey nicely up inclines with 700w + output. Unrestricted 28mph with 48/11t gearing though could go a bit faster with 52t gearing.

New battery needed ? Though try without the BMS to rule out a BMS fault.

31kg for the R & M is light compared to my fully kitted out Boardman for single day ride outs. Rear pannier rack with top bag and leather M/B panniers. Yose hub kit. 36v 14.5ah battery. 48v 14.5ah battery. 48v 11ah battery. Suntour sus seat post. Suntour sus forks. Mudguards. Knobbly 38/40mm...

5v on both indicate they are sending info, either a signal or reading. How they were connected to the original battery no one really knows with out being able to see inside one. We know red is the v+ supply from the battery an we know the black is the v- supply, I suspect they may have all...

If you still want TS drive with the hub motor then you can get a complete new Kunteng (KT) TS kit from BMSBattery. It comprises a TS bottom bracket, TS SO6S controller with LCD3. Alternately you scrap the whole TS thing and just settle for a normal cadence sensor drive for £70- £80 and a new...

You are stuck with it as an OEM part it will only be available via a dealer who sells the UM44 model, then most likely it is only a warranty part and not available for retail onward selling.

Afraid Flecc is right. Unless the lcd allows derestriction or the controller wiring has any extra's for adjustment then you are stuck with the 25km/h. Some controllers have a thick multi white data cable though unless you have the software programming and programme cable you are again stuck...

I can't believe that all the issues with Bafang Carrera's is down to any hub issue as the motors are very much bullet proof, more likely to do with controller/software used. If the hub freewheels by hand ok then the clutch is all fine . My bafang cst with kt electronics is faultless as is my...

For any train buffs out there or any one wanting a chance to film or take pics. Another of Sir Nigel Gresley's A4's is visiting the Bluebell weekend of 12th - 14th October. 60009 Union of South Africa is due.

The two wires were most likely sending voltage info to/from controller and to the battery level indicator. Do any of them show up any significant reading when a meter is put on them as you can't allow them to remain unprotected for fear of shorting and blowing the controller.

Put a meter between Black/Orange then Black/White to see what voltage reading you get.

It is only simple with the right spokes length and using the correct X pattern for the spoke length.

Well done to Garaint Thomas on winning ' Le tour 2018 ' :). Following in the footsteps of team mate Froomey, it might even be said he is a completely clean champion untainted by accusations of TUE's excess's. Lets hope there are no French sour grapes over another British winner for Sunday's...

Not all systems will co-operate with a change in magnets counts, for instance the KT needs a change in the C1 setting. Smarter intelligent systems will not work correctly My controller with 12 mag disc doesn't work correctly if the setting is set to another magnet count, you get a pause/stutter...

Cells don't have an infinite life, the more use you get out of them the better. You have to ask your self if better value or life has been had from a battery that has been used very regularly (weekly) over 3 - 5 years or one that is only used only a few times (less then monthly) a year over a...

The Oxygen manual is for practicality, for buyers without battery management knowledge to prevent said battery from under performing from part charging causing the unbalancing mentioned. It can be equally bad practice to leave fully charged if the end user is an infrequent rider. A fully...

Lithiuim charging is counted as one full charge for life cycle. You can part charge a battery if wishing to raise to a certain voltage level if not using for a while but it is detrimental if you do this for regular use as mentioned the cells will not balance as well as underperforming with low...

Programmable/smart bms are > then $100 and probably worth it if you are building your own pack with very good quality cells. For OEM or off shelf packs it is more about as you say charging efficiently and awareness to promote battery life. Most packs with reasonably good cells will see about...