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newsV20 Pro fat-tyre ebike
I bought one of these, assembling it right now. From these guys in Australia:
As to why, ah, that will become apparent soon.
For a 20x4 full-suspension fat-tyre ebike, these are very cheap. They are a "no brand", the Chinese company sells them to distributors world-wide who put their own branding on it. But they all have the generic name "V20 Pro". There is also an older "V20".
They are manufactured with various motor sizes, and the one I
bought has the smallest motor, to meet local regulations. You need
to be careful about that, if you want your ebike to be legal. You
will see some on Temu, Aliexpress and Amazon advertized as 750W,
1000W and 1500W -- these are "peak" watts, not continuous rating.
There is engraving on the motor showing the actual continuous
power rating. I think that those higher-power motors are legal in
some States of the US. After some online reading, I determined
that the ballpark continuous rating is half, or under half, of the
advertised peak rating. But what does "peak" mean anyway? When
starting off from stand-still there is a surge current, maybe only
for a couple of seconds, so that is probably where they get the
"peak" figure from.
A product made to the lowest possible cost, we have to expect some issues. I watched reviews of course, and have verified one problem; the tyres come almost deflated, and have to be inflated with great care. The problem is, in the deflated state, the tyre can come out of the rim. There is a photo here, showing the tyre problem:
https://forums.bikeride.com/thread-8846.html
...that's an earlier V20 model with spoked wheels, but the problem is the same.
The fix is to inflate the tyre a little bit, then press in both sides with the hands, get the tyre into the rim, then inflate a bit more, check, then inflate again.
The front wheel was easy to do, as it came separate; however, the bike had to be laid on its side to inflate the rear wheel, as the weight had to be taken off the wheel so as to get the tyre to evenly pop back into the rim all around.
A bit weird, but I guess the positive side is it should be easy to get the tyre off when need to repair the tube.
The bike is all steel, and heavy. Though, the wheels are alloy.
There is an assembly manual; however, not very useful. Fortunately, there are lots of assembly videos on YouTube, such as these:
"How to assemble the e-bike V20 when you receive it ?"
https://www.youtube.com/watch?v=AaE__g9vp-A
https://www.youtube.com/watch?v=ZR_UV4eP0MY
"V20Pro assembly process"
https://www.youtube.com/watch?v=iq-XEdhLHgg
Some videos also on modifying the V20. I have a spare 48V 20AH battery, and interested in adding that as a second battery for greater range. The vendor supplied me with a 48V 18.2AH battery, bigger than advertised, which was nice of them; however, I would like to get closer to 100km range. It is pretty simple to add a second battery, as this video explains:
"Extra Battery on TamoByke V20 or Movcan V20 - more range"
https://www.youtube.com/watch?v=p_Spml-tukk
There is even a Facebook group especially for the V20.
The seat is 88mm above ground, probably too high for some, but
there are similar models with lower seat.
There is a plan for this bike, will post more soon, and will make
a video for YouTube.
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