Recent content by Santacruz

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)

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

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...

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

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...

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...

+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...

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.

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...

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...

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...

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.

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.

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

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...