Sur-Ron - New Mid drive Bike

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
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motomoto   1 kW

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Re: Sur-Ron - New Mid drive Bike from China

Post by motomoto » Dec 08 2017 1:27am

Maybe put an Agni motor in it.

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Re: Sur-Ron - New Mid drive Bike from China

Post by JuiceMeUp » Dec 08 2017 1:34am

I see your point Drum.

I've successful 3D printed a number of fans for motors that have worked quite well.
As long as there is a bit of shaft to attach to, can offer the same here.

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Re: Sur-Ron - New Mid drive Bike from China

Post by bionicon » Dec 08 2017 4:21am

If money is no issue than take the Hacker Q150 the controller works at maximum 60volts and the motor has a diameter of 150 mm and weight arround 2,5 kg, at the moment i am pulling 14kw out of it.
QST150-rueckansicht-elektromotor-industrie.jpg
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Re: Sur-Ron - New Mid drive Bike from China

Post by motomoto » Dec 08 2017 10:43am

I didn't know about that motor. Thanks.

Just talked to the salesman. $3500 with the proper controller.

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 09 2017 2:52pm

I was planning to build an e-moto using a crf250 frame and an Emrax motor. They have a 188mm motor good for 30kw continuous 70 kW peak.
Plettenberg also do a compact motor good for 30+ hp from memory.
Both are very expensive but super high end.

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 09 2017 3:25pm

Here are some pics of the motors fitted to the batch i have received, are they the same?
I was told that these are the NEW motor!
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Re: Sur-Ron - New Mid drive Bike from China

Post by motomoto » Dec 09 2017 4:14pm

My motor doesn't have fins. And the right side is new.

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 09 2017 4:25pm

That is interesting, does your motor have a serial number?
These bikes start with 20171020 which appears to be the build date then 100+
Except one that is 029...

These bikes feel like they have a programmed secondary setting like a carby bike.
The torque/current may be limited under a certain speed then it changes over to a high setting?
You can feel it change over when slowly increasing the throttle.

The throttle is cable too which is something that my other e-bikes don’t have.
Top speed for the 60v was 81km and 48v reaches 63km

I got 34kms of bush trail riding out of the 48v battery whilst the 60v still had 53% left.

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 09 2017 4:30pm

I will try to get some videos up too as I’m sure they are much quieter

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 09 2017 11:18pm

Here is a quick walk around video

https://youtu.be/ZBHHDee7udQ

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Re: Sur-Ron - New Mid drive Bike from China

Post by Aebrennan » Dec 10 2017 6:56am

Here is the first part of our test bikes in action more to come

https://www.youtube.com/watch?v=pFBLHOI ... tion=share

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Re: Sur-Ron - New Mid drive Bike from China

Post by Allex » Dec 11 2017 5:35pm

Aebrennan wrote:
Dec 10 2017 6:56am
Here is the first part of our test bikes in action more to come

https://www.youtube.com/watch?v=pFBLHOI ... tion=share
Could you tells us how the dif. forks feel, wich one feel better?
Will love to see Stealth vs this bike in comparison. How are they from dead stop, wich one feels more powerful?

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Re: Sur-Ron - New Mid drive Bike from China

Post by gridlok » Dec 12 2017 1:53pm

Test rode this ebike for several days a couple weeks ago. Finally got around to posting a review. https://electricbike-blog.com/2017/12/1 ... dirt-bike/ if you have any questions PM me directly. Thanks.
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Re: Sur-Ron - New Mid drive Bike from China

Post by dirkdiggler » Dec 12 2017 2:30pm

Posted this in the US group buy thread. Needs to be here too.

Well, I found it at Luna. Should of bought direct from Sur-ron. Doesn't look like much savings as it is listed at $3,300 and $160 shipping. $3,460 is not bad, just $400 more than I was quoted by Sur-ron. I guess you do get support and not having to do a direct transfer to a Chinese bank gives you some piece of mind. As always Luna is great at doing upgrades for their products. Looks like there are going to be some options coming.
https://lunacycle.com/luna-sur-ron-dirt-mx-ebike/
ODAY THIS BIKE IS ONLY AVAILABLE FOR ACTIVE USERS ON FAST ELECTRIC BIKE FB Page

LUNA is first once again to bring a brilliant product to market

This is the newest version of this bike with a new motor with better heat fins, more power, and significantly quieter than the first prototypes seen online.

For Off Road Use Only!

Not legal in all 50 states.

Suprise! Luna and Sur Ron have partnered to offer an awesome dirt bike to the North American public.

Read one review on the Sur Ron from Ev Nerds here

Check out the review on electricbike-blog.com (coming soon)

We will ship with the speed limited to 20mph which could be argued is street legal but we do not recommend riding it on the street since street riding is dangerous. WE recommend you do not remove the speed limiter because with the speed limiter off the Sur-Ron will do 45mph.

If you do not want your bike shipped with the limiter please specify your bike is for racing in your order notes and you want speed limiter removed

There has been a lot of excitement about the release of the Sur-Ron bike for good reason.

This bike is 50 and even 100cc honda killer... the ultimate little dirt bike perfect for young or inexperienced riders...but also good for just about everyone (great xmas present which you can use yourself)

This electric mini motorcycle is fast, reliable, giant range, and built at a quality that we have never seen before for an EV out of China.

Sur Ron and Luna have secretly been working on developing this product for the North America market and Luna is the exclusive North American Dealer for this product.

Luna will also be announcing some exciting new upgrades which will only be available to people who buy their Sur Ron from us. Also we will support the product from here in the USA getting you any warranty replacement parts you might need shipped direct from California.

This bike is built like a tank and we are confident it will provide years of reliable service.

It has one of the best constructed battery packs ever offered in a small EV....

This bike is easy to customize and upgrade... the performance upgrades are limiteless from the battery to the controller. We think this motor can handle easily 12,000 watts with a fov sine wave controller, and we will be soon offering that as an upgrade kit.

We will be offering an easy to install pedal kit in the next few weeks.

This bike has the capacity to be the ultimate hot rod ebike.

Other Features:

Quick swappable battery pack (we will be offering extra batteries shortly)

Fast 3 hour charging
Image

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Re: Sur-Ron - New Mid drive Bike from China

Post by dirkdiggler » Dec 12 2017 2:44pm

While I'm at it. Another vid:

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Re: Sur-Ron - New Mid drive Bike from China

Post by dirkdiggler » Dec 12 2017 2:54pm

Looks like Sur-ron has a Youtube channel now.
Another one:

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Re: Sur-Ron - New Mid drive Bike from China

Post by AMM118 » Dec 12 2017 6:28pm

I'm liking the concept but what kind of dudes make a dirt bike with no front fender - I mean they must not ride in the dirt at all....

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Re: Sur-Ron - New Mid drive Bike from China

Post by tomjasz » Dec 12 2017 9:50pm

dirkdiggler wrote:
Dec 12 2017 2:30pm

Well, I found it at Luna. Should of bought direct from Sur-ron. Doesn't look like much savings as it is listed at $3,300 and $160 shipping. $3,460 is not bad, just $400 more than I was quoted by Sur-ron. I guess you do get support and no

Not legal in all 50 states.


Other Features:

Quick swappable battery pack (we will be offering extra batteries shortly)

Fast 3 hour charging
Warranty? Parts access?
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

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Re: Sur-Ron - New Mid drive Bike from China

Post by scrambler » Dec 12 2017 9:56pm

As mentioned in the Luna text:
" Also we will support the product from here in the USA getting you any warranty replacement parts you might need shipped direct from California."

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Re: Sur-Ron - New Mid drive Bike from China

Post by tomjasz » Dec 12 2017 9:59pm

scrambler wrote:
Dec 12 2017 9:56pm
As mentioned in the Luna text:
" Also we will support the product from here in the USA getting you any warranty replacement parts you might need shipped direct from California."
Stock? Heck some Bafang parts are still hard to get...
Warranty period? 30 days? 1 year? Labor?
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

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Re: Sur-Ron - New Mid drive Bike from China

Post by motomoto » Dec 13 2017 1:02am



I want to race these things so Bad !!! It would be so Fun !!!!

Young guys with skills would be awesome to watch. Downhill dudes would be amazing !!!

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Re: Sur-Ron - New Mid drive Bike from China

Post by dirkdiggler » Dec 13 2017 1:12am

From your video, it doesn't look like these guys would be much of a challenge!

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Re: Sur-Ron - New Mid drive Bike from China

Post by liveforphysics » Dec 13 2017 3:06am

I had some friends who used that motor spinning props, and the efficiency was sad and heating was sad, but it did work for while.
They went to a Joby motor and it ended up having half the losses.

With motors its tough to know if it's the motor that sucks or the motor/controller combo that sucks, so some controller they didn't test may work out fine on it.
bionicon wrote:
Dec 08 2017 4:21am
If money is no issue than take the Hacker Q150 the controller works at maximum 60volts and the motor has a diameter of 150 mm and weight arround 2,5 kg, at the moment i am pulling 14kw out of it.QST150-rueckansicht-elektromotor-industrie.jpg
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Re: Sur-Ron - New Mid drive Bike from China

Post by FlightService » Dec 13 2017 7:49am

Get some street tires on that thing, a decent head light, and some pedals and you have a strong competitor for the motoped.
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Re: Sur-Ron - New Mid drive Bike from China

Post by dirkdiggler » Dec 13 2017 12:26pm

They do have a supermoto version. I don't see it listed on Luna though.

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