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  1. Sturmey

    Motor Torque Figure

    Another thing to bear in mind is that the torque quoted for mid drive motors is often at the chainring whereas hub motors are quoted at the wheel. With a middrive you have to adjust the figure by the ratio of the largest working rear sprocket to the motor chainring and allow a few %.chain...
  2. Sturmey

    Help! Pembleton Somersby help needed

    I think Halfords guarantee the battery for 2 years/500 full cycles so I think I would go back to the shop if its not a simple fix.
  3. Sturmey

    Motor Controller Not Working

    I think there is a safety feature with most controllers that register an error when you power up with the throttle pressed or the wrong throttle signal voltage as would be your case. You could try powering up the controller first and perhaps then connecting the resistors although I think you...
  4. Sturmey

    Where would I find Bafang XF07 Bearings?

    I have a MXUS xf07 which may be different to your Bafang version which I never knew existed. Mine were 6001RS and 6902 RS (cable side) I think but you should check as suggested above . I got mine at the local motor factors. They were made by 'Codex' and cost me 10 euro each.
  5. Sturmey

    Wisper Rear Brake Improvement - Suggestions Please

    Your not on your own. My old Nokia flip phone that I had for over 10 years broke down last year and replaced it with a Doro G2 flip (dumb)phone. Small and compact with large text and only needs charging every week or so. It is possible to live without a smart phone.
  6. Sturmey

    KT LCD 3 POWER SETTINGS

    You are switching back and forward between a 36v and a 48v battery so I think perhaps your controller (or LCD?) gets confused.!!!
  7. Sturmey

    Wisper Rear Brake Improvement - Suggestions Please

    If If I may add one thing extra to your list, one thing I have come across twice lately is a problem with the 'rubber boots' stopping the brakes when the pads are worn down a bit.. The boots were made from a very hard pvc type material rather than the normal flexible rubber . In both cases, I...
  8. Sturmey

    Review Tong Sheng TSDZ2 Owner Survey

    The LCD3 sits about an inch high on a pedestal. I took the display off the pedestal (2 screws) and fitted it lower, sitting directly on the handlebars using a bit of steel holed tape and cable ties. Its much more tidy and less likely to get damaged, especially when inverting bike for puncture...
  9. Sturmey

    Chain flapping noise after new drivetrain installed - Any ideas?

    Looking at photos above, I think thats a narrow wide chainring. Every second tooth is narrow/wide and the wider outer chain link must go on to the wide tooth and the inner narrow chain link to the narrow tooth.. https://www.firstcomponents.com/narrow-wide-chainring/
  10. Sturmey

    Aikema 250W hub motor opening problem

    What would you recommend to lubricate the roller clutch?. Grease can dry out and get sticky. There has been reports of roller clutches in some middrives slipping after over greasing. I have seen freewheels sticking from grease drying out. I suppose a second question is does anyone check the...
  11. Sturmey

    Aikema 250W hub motor opening problem

    Is it necessary to re-lube a motor? The reason I ask is because my Yose motor have clocked up high milage (20K miles plus) without ever been opened. I have had to open another high mileage motor to replace of a noisy bearing and added a small amount of silicon grease when reassembling in this...
  12. Sturmey

    Cheapest bike on Amazon

    But what I am thinking is that if a retailer/supplier sells a bike or kit and claims that it complies with EN15194, then he has to make some effort to make it tamper proof so to speak. I notice some suppliers (e.g pswpower) sell some kits that are completely open but they do not claim that they...
  13. Sturmey

    Cheapest bike on Amazon

    I am just wondering is it not the case now that all ebikes/kits that comply with EN15194 are suppose to have their parameters locked or am I missing something?
  14. Sturmey

    VLCD5 Thumb Throttle.

    Just to add to Az above, as well as buying the 8 pin controller, I think you may need to buy the 8 wire version of the Vlcd5 as well as special throttle that plugs in. https://www.pswpower.com/products/vlcd5-display-for-tsdz2-electric-bicycle-central-mid-motor-...
  15. Sturmey

    Woosh faro

    Had this problem with my daughters Pendleton back in 2018 ( DNP epoch 8 speed freewheel). Gave it a few squirts of 3 in 1 oil and never had problems since.
  16. Sturmey

    UPP Batteries Warning

    What sort of thermal device was fitted to your battery? The reason I ask is because I repaired a joycube/phylion battery lately. It had two thermistors embedded into the cells with white thermal goo and also a thermal fuse on the charging circuit also similarly embedded. I cant see any detail...
  17. Sturmey

    Motor for 130 mm rear drop outs

    Can I make a distinction here between 'springing' open the frame wider by an extra 5mm to fit a wider hub, and 'spreading' or permanently cold setting/spreading the chain stays wider. I have on occasions fitted wider 135 mm hubs on to 130mm wide chainstays by springing them apart, although it...
  18. Sturmey

    Brake calipers quality

    I am glad to see your brakes are performing well. I think one of the reasons your brakes work so well is because the pads are parallel to the rims and move horizontally and accurately towards the rim, ensuring even wear on both the pads and rim. I have replaced many worn out rims with ordinary...
  19. Sturmey

    How do you deal with a puncture/breakdown when out?

    Thank for that information. I also had very bad luck with a pair of ordinary Land Cruisers 700 X 42 with frequent punctures. Even very small thorns seem to puncture. I eventually took them off as I thought someone had put a curse on them. They were only slightly worn. They were a nice grippy...
  20. Sturmey

    Same Motor, Different Power Rating

    Thanks. The one thing I do notice is that there has been some additional restrictions listed in the 2017/2023 document index that are not in the 2009 documents. For example, there appears to be an extra section 4.2.17 'Anti-Tampering Measures' which makes me wonder precisely what these measures are?