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  1. Blunderbuss

    Zobop

    When I saw the conversion that peter.c had done on the zobop I was very smitten, and as I was going to do an full suspension bike next that made my mind up. So a few months down the line I am at stage that makes me feel it was the right thing to do – I love it . All the mechanics are done and I...
  2. Blunderbuss

    Battery layout.

    I have got a tight space to fit a 13S4P into and have been messing around with layouts for a while and i think this is my best option. I have two thoughts on connecting S11 to S12, one is to put an extra thick layer of insulation over the ends of the cells in S10 and S9 so i can lay nickle strip...
  3. Blunderbuss

    Problems Indexing on a 1x9

    I have got a problem in getting the indexing to work on a 1 x 9. I was riding for 90% of the time in the middle gear on the front and 10% on the smallest (22/32/42 as per standard on Carreras) so the 42 never got used. Also the mud would clog up the front mech, so I decided to get rid of it and...
  4. Blunderbuss

    Theoretical power Vs Actual power

    I have been doing some checks on what the potential power of system should be and what the display reads: Build 1 = 13s6p – 2200MaH cells – 20a BMS – 20a controller – 350W 36V Bafang hub motor. Theoretical – 52v off the charger = 1040W (52vx20a) Actual reading on the LCD was 820w Build 2 =...
  5. Blunderbuss

    Small front motor Q85 / Q75?

    I am working out the components to do a build for a light rider (45kg) who wants the simplest of setups; only going out at weekends, on tarmac when the weather is okay and not more than a couple of hours at a time. With that spec list I was thinking of a small front hub, I will build the...
  6. Blunderbuss

    18650 cell suppliers

    Has anyone got any experience or recommendations for companies that can supply new cells, the best price i have found so far is Nkon in Holland, works out about £3.50 for a Samsung 30q delivered. https://eu.nkon.nl/rechargeable/18650-size/samsung-inr-18650-30q-3000mah.html Thanks.
  7. Blunderbuss

    Red LED on BMS

    I have just connected up the BMS on my first battery build and three of the LEDs are lit up. I can't find anything to tell me what that means, does anyone know?
  8. Blunderbuss

    Battery building help

    Having now built three ebikes I have realised that for me it is the battery that has been the biggest problem, I have spent far too long measuring and remeasuring to see if any will fit :confused:. I bought one that I knew would be snug, only to realise that the dimensions stated did not include...
  9. Blunderbuss

    Overheating Controller

    Before I throw my controller in the bin I just wanted to check if anyone else had come across what started to happen today. After being out for about 1 hour my controller cut out due to getting to hot, I use the PAS and only for uphills so it had done 17 mins work over the hour, I checked all...
  10. Blunderbuss

    Sine Wave Controller help.

    The last bit of my project turned up (PSWPower 48V 350W Sine Wave Controller) and having installed it my bike runs “rougher” than with the previous square wave controller when below 12mph, above 12mp it is smooth. It propels the bike fine, and the power levels are great (PAS 1= 100w – PAS 5 =...
  11. Blunderbuss

    26" wheel in a 27.5" frame

    I have got a 27.5" donor frame for my next ebike project and I had a severe bout of impatience, knowing that my controller would be several weeks in delivery from a far off land, and even thou my local independent bike shop would turn around getting my new 350W Bafang into a 27.5 wheel very...
  12. Blunderbuss

    Advice on a controller

    I am building my next ebike and have a Bafang 36V 350W (BFSWX02) which is being "spoked" into a 27.5" wheel, I have a 48V downtube battery but no controller - so am looking for any advice on a suitable one. I connected the motor to my existing bike which is also 48V and has a controller which...
  13. Blunderbuss

    BMSBattery

    I was just looking at the Q128C from BMSBattery and the postage is £126, whilst the wheel is only £95, does anyone who has ordered from them before know if there are any other options - is there a UK outlet?
  14. Blunderbuss

    Are a Hub and Mid Drive comparable by power?

    I am just about to embark on building my second ebike and whilst it will again be for off road i am going to give a mid drive a go, so does anyone know if i can make a simple comparison for power. My current bike is a 500W 48V bafang geared hub with a 20 amp controller, so if i spec the Mid...
  15. Blunderbuss

    Not making the same mistake twice.

    I am now looking to get my other half setup with an ebike, and having got it wrong with what i thought i needed for my bike (more power = better - how wrong I was) i would welcome your opinions of fulfilling the following criteria: Kit needs to fit to a 14" frame, 26" wheel mtb. Rider weighs...
  16. Blunderbuss

    Direct Drive vs Geared Hub

    I have just changed my 1000w DD for a 500w GH (thanks to anotherkiwi, Nealh and d8veh for educating me on the “way of the watt”) Because of the rubbish weather over the weekend I only got to do a couple of miles. The first thing of note is the weight difference is massive – the GH is nearly...
  17. Blunderbuss

    Does this sound correct?

    I have the chance of getting a 8fun motor with the following details and would appreciate someone marking my homework :). Rear Hub 8fun on a 26” rim – the code on the motor is: CST 36V 500W 1606 0529-6 So using the data from this chart I am presuming it is a code 16...
  18. Blunderbuss

    Parallel or separate for batteries.

    Any advice you have on putting multiple batteries on my bike would be welcome? I am going to build my second ebike, I have learnt loads from building my first and I intend to have something that is more flexible. It will be a geared hub (thanks for all the help with this) and I would like to...
  19. Blunderbuss

    Question about the C5 setting on the KT-LCD3?

    Does setting the C5 value lower make any difference to distance I would get on my battery. Trying out the different values I can feel the changes in the power (torque?) and I have settled on 05 as that gives me the range of pedal assist that works for me; I rarely use the thumb throttle and...