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  1. Santacruz

    Random cutting out solved

    My bike I built from scratch 5 years ago. Stealth type frame. Sabvoton 96120 controller, QS273 motor, 22s5p battery pack of 26650 cells, CA3 for control and display. After 5 years of trouble free cycling, 2 years everyday to work and 3 retired, so shopping/pleasure riding. Started to get random...
  2. Santacruz

    What motor windings would you go with?

    My rear wheel is 19", the tyre is 3.50 x 19. The overall diameter is 3.50 + 3.50 + 19 = 26" A 3.00 x 19" tyre would give 25" and a 2.50 x 19" tyre would give 24". This is based on new tyre, as with wear, obviously the diameter can change (How much would depend on the tread type)
  3. Santacruz

    using 100mm rockshock with enduro frame

    Thank you. Not a bad "bicycle" for 25kph with only pedal assist 🤣
  4. Santacruz

    using 100mm rockshock with enduro frame

    While I built my own from scratch (I copied different parts from E-bike clones), I messed around for a year with different shock set ups. I went from the triple crown DH type to Fox 140mm shocks for the front and from a 26" wheel to a 24" wheel. Rides very nice and have about 9000kms street and...
  5. Santacruz

    Rear shock setup help on a stealth bomber clone.

    Take a look at this thread (just over halfway down on page 6). I had similar problems and tried various ways. Maybe one of these ideas will suit you. https://endless-sphere.com/sphere/threads/new-enduro-clone-build.113133/page-6#post-1742137
  6. Santacruz

    Rivnuts

    I have used them for years, at work and at home on many projects. I have never had a problem with them. One trick I use, is to coat the outside of the rivnut with stud lock (Loctite green). Then there is little risk of them trying to turn when you want to unscrew a fitting. It is also important...
  7. Santacruz

    Alternatives to Alibabi-Express for buying QS Motors and controllers, etc..

    The contact I have used at QSMOTORS Harry Zhou Sales Director QS MOTOR LTD But, I have not had anything from them since Feb 2021 (Not needed as everything has been reliable), so I don't know if Harry is still there. But when I made orders, I would specify what I wanted and they confirmed they...
  8. Santacruz

    New Enduro/clone build

    +1 on the shock. I did the same a year ago. First I tried an idea of 2 air shocks that really worked well, but, they needed constant topping up and I got a bit fed up with it. So, I sized and fitted a pit bike shock with remote reservoir. Now, very nice ride and handles the QS273 well. Twin...
  9. Santacruz

    Alternatives to Alibabi-Express for buying QS Motors and controllers, etc..

    You can always contact and order direct from QSmotor themselves. I have done for the last 5 years and always had top service. Contact and advice by email when needed. I also know that I am not getting fake goods, which is always possible through other channels.
  10. Santacruz

    QS 273 motor 2 different versions ...

    When I built my bike, all the figures on paper, gave a top speed of about 125kph. With the bike on a stand and spinning it up in the air, it indicated 115kph. In the real world, top speed is around 80kph. That is adding my weight, the bike weight and wind resistance etc. But also from the real...
  11. Santacruz

    QS 273 motor 2 different versions ...

    A point to note. A difference between the two motors is, one is designed for bicycles and one is designed for motor bikes. So motor nr.1 will have the disc brake on the right side and motor nr.2 will have it (and a different PDC) on the left side. I cannot see if you have a chain from your...
  12. Santacruz

    Possible to add Pedal assist to 100a Sabvotron controller?

    I second the CA3. I have used the CA3 on nearly all my builds for the passed 15 years. My present system uses a Sabvoton 96120 (from QS Motors) and with the CA3 I have a multitude of fine tuning I can do. The PAS can be dialled in to behave how you want, independent to how the throttle works...
  13. Santacruz

    Ant bms lcd not displaying speed

    From what I see, you need the circumference to be 2326mm. Your entry in meters will be 2.326, or 2.33 or 2.3 if your input is not accepted. The value I see at the moment is 1 km !!! That is some wheel. For pulses, that depends on your motor.
  14. Santacruz

    Sabvoton+Cycle analyst = 2 level Ebrake

    Not at all irrelevant. I had an 8 magnet ring and changed to a mini 24 magnet from Grin and it made a huge difference. I am running a Sabvoton 96120 with a CA3 using pas and it is perfect. But, obviously, you know what you are doing.
  15. Santacruz

    Sabvoton+Cycle analyst = 2 level Ebrake

    I would also like to ask, how many magnets do you have on your PAS magnet ring?
  16. Santacruz

    EEB Chinese clone rear shock

    The different lengths of shocks will give different heights to the saddle. What I did with my build, was to use a length of bar, with holes in it. One end bolted to the swing arm, the other end drilled at 190, 200, 210,220mm and then tried each position to see what felt comfortable. For me it...
  17. Santacruz

    Hydraulic brakes - adjustment & mineral oil

    For mineral oil, I would stick with a known brand. I have always used Shimano and never had a problem with it. Every hydraulic calliper I have come across has not had any adjustment possibility. normally there is an adjustment that can be made at the brake lever. But this only changes the...
  18. Santacruz

    Sabvoton Mounting

    Mounted in that location, you will need it to be covered. One of the main things that will happen, is the controller will be sprayed with water and dirt by the front wheel (whether is is raining, going through puddles or off road). That frame I believe comes with a controller cover, but you...
  19. Santacruz

    Front forks keep shaking in frame

    Just a couple of points from experience, that is worth noting. If the rear swing arm pivot is the rubber bush type, seriously consider cutting it out and changing to ball bearings. The rubber bushing used will give an unstable rear end when riding. (Although I built my bike from scratch, I...
  20. Santacruz

    How many volts do you run on your daily driver ebike, emoped or eBSM?

    On my Stealth type build. 22s5p @ 90.2v (Lion 26650 cells) (Cells charged to 4.1)
  21. Santacruz

    Is this real?

    These have been in the Netherlands for about 2 years or so. They can be bought or rented.
  22. Santacruz

    hot disc brakes on hub motor?

    I am running a QS273 with a 180mm disc mounted. I did some experiments with different pad compounds to see what gave the best braking performance rather than wear. So a lot of runs with heavy rear braking, to the point I actually melted one pad and the material flew off! During all these tests...
  23. Santacruz

    Sabvoton SVMC 72150

    The 2 pots on the current sensor are for "gain & offset" and used to calibrate the multiple sensors that might be fitted. This PDF should give a fair explanation and that would be basically, don't touch them, they have nothing to do with getting more power...
  24. Santacruz

    Reclaimed cells. Great deal or bad choice ?

    I have used Nkon for some years now and had both reclaimed and new cells. (New, when the reclaimed were out of stock). I have not done any scientific tests, only built and used packs in my bikes and can say, I have never seen a difference. (I have done some random capacity tests from each batch...
  25. Santacruz

    Sabvoton SVMC072150 controller review, variable regen *PICS*

    Why not just leave the pack as 22s and only charge it to 84v. Same output, but with a benefit of the battery pack lasting a bit longer. On my set up, I solved it by using a 96120 and fixing my 22s pack at 90v. Nearly 18months with no problems at all and using regen and flux weakening.
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