Razor e300 ultra. Technical guide

Had bit of a nightmare with the setup of the motor on the vesc, the vesc had a firmware issue first of all that wouldn't update and then after I did manage to push the update the software didn't recognise and kept asking for a update, after manually pairing it with its unique uuid code over Bluetooth and then entering this into the pc software the vesc started to behave correctly and allowed me to set it up.

Then to my horror the motor was not syncing properly with the throttle when ever i changed position there was a pause and loss of control over the rotor making a banging noise as it stalled out, so many hours of digging through the parameters I come across a section in the advanced motor section that's says lower the number better the rotor control for low kv motors so I set this number to 1 and as if by magic the motor behaved perfectly, hopefully 2020 will see this one out the corner of my room and working.
 
How have you found the wet weather tyres?

I’ve considered buying a set of these. I’m just worried they might wear fast in non wet conditions.


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When i get to ride it I'll let you know, but at the moment it's middle of winter and stinking outside so I got a month or two before I get some decent riding weather.

I'm hoping for a few hundred miles at best out of these they are quiet a soft compound, I've got a set of junior tyres too so once it's running I'm just gonna beast them have a blast all summer when ever i can see how much abuse it can take before weakness shows.
 
Just wanted to say what a great post this was! I just started down the road of building up my old E300.

I was hoping you could recommend a solid hub motor and matching controller from a reliable seller? I am looking for 1000w power max. I also plan on making the E300 frame longer with some welding. That should also allow for more batteries if needed and lots of foot space. :)

Thanks again.
 
Cheers hopefully it turns out beast.
I got myself a different clamp in the end I had a change of mind the original was 6061 alloy but this one is 7075 that is more rigid and suitable as a clamp and it still has the 8mm bolts too.
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I got some camouflage grip tape for the deck and a decent set of grips but I'm still waiting for the 1600w nominal hub too clear postage on aliexpress then it's 20-40 days post so gonna be 2019 till this one sees some serious riding again.
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Hi,
I bought this motor from the same seller. I have trouble finding the exact nut for securing it to my frame.
The shaft is not suitable for a M12 nut (the nut barely can engage on the filets) and M13 is too large for it.
I think the thread is not metric, but I have no tool/no knowledge to be sure. Could you help me ? Thanks
 
Hi,
I bought this motor from the same seller. I have trouble finding the exact nut for securing it to my frame.
The shaft is not suitable for a M12 nut (the nut barely can engage on the filets) and M13 is too large for it.
I think the thread is not metric, but I have no tool/no knowledge to be sure. Could you help me ? Thanks
Sorry to hear of your troubles, im not sure on the thread pitch im sure its a left hand thread though, wish you well with your project but im not sure im of any help.
 
I found the nuts I needed: 12 mm diameter, 125 thread pitch (not sure what that means). I was lucky enough to find an ebay seller in my country selling these at a reasonable price. From discussing with specialists of nuts and bolts, this format of nuts is pretty standard in auto parts, but could find those nuts on auto parts shelves. Go figure ! Anyway, I'm happy now cause I'll be able to resume my project ! Yoohoo !
Thank you Ian, if only for telling me you read my question !
 
Did the ultra Razor ever get a proper test or did you find a better toy to occupy your time? Admittedly a big problem for myself...
 
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