Sur-Ron - New Mid drive Bike

johnrobholmes · Apr 18, 2018

gashero said:
new to the forum, just got the light bee couple weeks ago and the weather has not been cooperative but took it out to day and noticed the limp mode ( no more than 25 mph in sport mode) when the state of charge is 40%. Does anyone have this issue.

Mine did this once when I was riding in freezing weather, soon after receiving the bike. I chalked it up to the battery probably getting too cold, as I wasn’t riding hard and it had some time to get cold. My last full discharge in warm weather hit soft cutoff at 18% soc.

Rix · Apr 18, 2018

artisanstone said:
I would really like to have more rubber in the back. Anyone think a 110/80 trials tire will fit?

It will not fit, but I think a Shinko SR241 2.75-19 will fit. It a bit bigger than the stock tire.

3DTOPO · Apr 18, 2018

Rix said:
3DTOPO said:

Click to expand...

You can always drive into Banks and eat there giving you a 3rd option. Beautiful picture. That probably took some effort to pedal the fat bike in that snow.

Problem with Banks Cafe is everyone sells the same style food up here: American.

Yeah, it was a bit brutal getting up there - especially on that fat bike - it was a 50 pound tank! Since then I got a much more reasonable ~30 pounder.

I cheated a bit using the original rechargeable power assist, my trusty Siberian Husky! (you can see his lead going out of frame on the picture).

Rix · Apr 18, 2018

3DTOPO said:
Rix said:

3DTOPO said:

Click to expand...

You can always drive into Banks and eat there giving you a 3rd option. Beautiful picture. That probably took some effort to pedal the fat bike in that snow.

Click to expand...

Problem with Banks Cafe is everyone sells the same style food up here: American.

Yeah, it was a bit brutal getting up there - especially on that fat bike - it was a 50 pound tank! Since then I got a much more reasonable ~30 pounder.

I cheated a bit using the original rechargeable power assist, my trusty Siberian Husky! (you can see his lead going out of frame on the picture).

AWESOME!!! Story keeps getting better and better. Nice animal BTW!

3DTOPO · Apr 18, 2018

Rix said:
artisanstone said:

I would really like to have more rubber in the back. Anyone think a 110/80 trials tire will fit?

Click to expand...

It will not fit, but I think a Shinko SR241 2.75-19 will fit. It a bit bigger than the stock tire.

I too would like as wide as possible tires.

Please forgive me (I am a total motorcycle tire noob), but 2.75" essentially equals 70mm. Would the SR241 2.75-19 actually be wider than the stock tire?

P.S. thanks for your compliments!

Rix · Apr 19, 2018

The shinkos SR241 is way way wider than their advertised size. Mine measures out at a little over 3 inches wide. They are considerably bigger (higher profile) and wider than the stock tires.

Edit///2 inches was incorrect, 3 inches is correct.

fechter · Apr 19, 2018

The Husky looks like he has a rechargeable battery on his collar. Is he cheating?

efMX Trials Electric Freeride · Apr 19, 2018

Rix said:
The shinkos SR241 is way way wider than their advertised size. Mine measures out at a little over 2 inches wide. They are considerably bigger (higher profile) and wider than the stock tires.

I think Rix means the shinko 241 19 x 2.75 is just over 3 inches wide.. if you try to go any wider the rear tire will probably make contact with the chain.. Sur-ron should come out with a wider rear swingarm fat tire version of the light bee..

efMX Trials Electric Freeride · Apr 19, 2018

Enginepy said:
Hey guys,

New to the forum and also e-bikes. Been reading this thread for a while and placed my pre-order through Luna. I'd been waiting for a while and then, with a healthy dose of vodka saturday night, I placed my order at 2am!

Pre-ordered a steel-gray with RST. They say on their website should ship out first half of May. Super excited.

Does anyone have thoughts on the must-do upgrades? (chain, tires, handlebars, lights, etc).

not sure about "must do" upgrades.. ride it first and see what you need.. depends on how and where you ride.. if your riding street much then get some street tires or the super moto wheel set and some mirrors.. if your riding off-road then consider the primary drive chain conversion, larger rear sprocket (and longer higher quality chain) for steep trails, and a more durable rear tire.. higher rise bars if your tall.. bark busters / hand gaurds would be nice too.. and how about a second battery for quick swap and endless riding..

Alex Imreh · Apr 19, 2018

The battery is approximately 14.5" X 6" X 5.5", 369 x 153 x 140mm. Good, i was waiting for that info, thank you.
About competition gathering info, I am sure some competitors already bought a Sur-Ron, i know at least 2-3 doing that. Maybe it is time to do the other way round, reverse engeneering in Europe for something designed in China haha.
Now for all EVs, main issue is battery size, range. When there will be on the market a bike similar with SurRon, same engine but battery 2 times bigger = 100km range, and frame a bit bigger, than such a bike will really hit mainstream, that is the ebike that I am really waiting for. Now Sur-Ron is a good city bike as range, without EU homologation to be used in cities. With double battery/range it could be used better offroad, no need for homologation there.
This size 369 x 153 x 140mm is size for the biggest battery? Battery compartment size? There is no way to increase range/battery for SurRon with this frame?? With a battery 2 times bigger total weight could be still much under lightest gas enduro, even with bigger frame and bigger engine.

Gloert16 · Apr 19, 2018

gashero said:
new to the forum, just got the light bee couple weeks ago and the weather has not been cooperative but took it out to day and noticed the limp mode ( no more than 25 mph in sport mode) when the state of charge is 40%. Does anyone have this issue.

I saw this too when my battery read ~35%. I was still in my first discharge cycle since getting the bike, so waiting to see if it persists. From reading reviews I didn't think limp mode kicked in until <5% charge.

gashero · Apr 19, 2018

Great to hear that it just not me that got the limp mode. Its my first discharge and it was pretty cold out yesterday. Thanks for all the reply.

motomoto · Apr 19, 2018

58 tooth sprockets coming along. They need to be plated one more time with alodine to protect the exposed
raw 7075 from corrosion.

johnrobholmes · Apr 19, 2018

Updates on my battery, and I find and fix a loose spoke.

[youtube]BgSbqqTs9Ug[/youtube]

Rix · Apr 19, 2018

efMX Trials Electric Freeride said:
Rix said:

The shinkos SR241 is way way wider than their advertised size. Mine measures out at a little over 2 inches wide. They are considerably bigger (higher profile) and wider than the stock tires.

Click to expand...

I think Rix means the shinko 241 19 x 2.75 is just over 3 inches wide.. if you try to go any wider the rear tire will probably make contact with the chain.. Sur-ron should come out with a wider rear swingarm fat tire version of the light bee..

Thanks for catching that Natas, I fat finger the keyboard, and yes the SR241 19-2.75 is just over 3" wide.

artisanstone · Apr 19, 2018

motomoto said:
58 tooth sprockets coming along. They need to be plated one more time with alodine to protect the exposed
raw 7075 from corrosion.58t 1.jpg

Price?

3DTOPO · Apr 19, 2018

Got mine today! Oh man what fun. Totally exceeds my expectations!

Just got back from my first ride. Now I just need a faster dog!

Came with 50% charge and didn't have any issues (other than one missing sticker).

Rix · Apr 19, 2018

motomoto said:
58 tooth sprockets coming along. They need to be plated one more time with alodine to protect the exposed
raw 7075 from corrosion.58t 1.jpg

Better than porn!!!

Rix · Apr 19, 2018

johnrobholmes said:
Updates on my battery, and I find and fix a loose spoke.

[youtube]BgSbqqTs9Ug[/youtube]

nice review, I have a couple of nipples that are warped as well from tensioning the spokes. My hope is the spokes take a set and I don't have to worry about it for a bit.

Rix · Apr 19, 2018

3DTOPO said:
Got mine today! Oh man what fun. Totally exceeds my expectations!

Just got back from my first ride. Now I just need a faster dog!

Came with 50% charge and didn't have any issues (other than one missing sticker).

Yah!! And you got a green one like mine!

Hyena · Apr 19, 2018

How's the colour in person ? Is it powdercoat or anodizing ?
It looks fairly thin in the pics but I guess it's hard to tell. In the pedal kit tutorial video posted ages back the swing arm and main frame are a different colour which looked pretty average.

As for the battery charging thing, as I always say anything with the potential to release energy has teh potential to blow up, be it battery, nuclear, gas, steam etc. I leave mine in my garage without a second thought and I reckon the risk of it spontaneously combusting is the same as my car or lawn mower is. (ie virtually none)

johnrobholmes · Apr 20, 2018

The green is anodized. Green is the hardest color of all IMo. Too much and it quickly turns dark, so a lighter green such as this bike will be on the “thin” looking side of anodizing. It’s still a proper coat, mine hasn’t scratched at all.

Rix · Apr 20, 2018

Hyena said:
How's the colour in person ? Is it powdercoat or anodizing ?
It looks fairly thin in the pics but I guess it's hard to tell. In the pedal kit tutorial video posted ages back the swing arm and main frame are a different colour which looked pretty average.

As for the battery charging thing, as I always say anything with the potential to release energy has teh potential to blow up, be it battery, nuclear, gas, steam etc. I leave mine in my garage without a second thought and I reckon the risk of it spontaneously combusting is the same as my car or lawn mower is. (ie virtually none)

In addition to what JRH said, mine is flawlessly anodized and the pics don't do it justice. I still cant believe the quality of this machine for the price.

Raisedeyebrows · Apr 20, 2018

One of these certainly would look good on one of the green bikes.

efMX Trials Electric Freeride · Apr 20, 2018

Raisedeyebrows said:
One of these certainly would look good on one of the green bikes.

question for Sur-ron dealer / distributors :

what is the headset size / standard used on light bee, 1.5 standard, 1 1/8 standard, tapered, integrated or external bearing cups.. this will be a factor in what after market forks can be fitted (and headset bearing / frame head tube durability)..

example : motoped uses 1.5 head tube standard with 1.5 to 1 1/8 reducer cups and external bearing cups..

motomoto did you ever disassemble your headset for damage inspection after the double jump??

reference : https://www.parktool.com/blog/repair-help/headset-standards#article-section-9

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