Sur-Ron - New Mid drive Bike
- Thread starter Allex
- Start date
Grantmac
10 kW
A set of trials forks would likely work very well. Just need some adaption for the triple clamps.
Shelbygoat
1 µW
- Joined
- Mar 30, 2019
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- 1
Jasonjm said:
I have moved mine 5.5” back and 3.5” up. All bolt on, no modifications to the bike itself. It’s quite ugly, but functional for me. All supplies purchased at Home Depot. I’m not able to upload a picture here, but I bolt two Long strips of metal where the seat attaches to and extended off the back. Then used shelving brackets to raise it up and bolts the seat to them.
Jasonjm said:
Jason,
I'm 6ft2 and the cockpit is slightly cramped. After your first ride you adapt and you don't even notice it. The Sur Ron feels more like a small mx bike. Mountain bikes have a much more top heavy feeling because of the frame geometry they use.
There is a wide single track just north of Santa Clarita. It climbs 1060ft in 1.5 miles and this guy riding a KTM530 does it in ~5:35 after deducting for his stall https://www.youtube.com/watch?v=QOk4BVawcic Another guy does the same trail on a XR400 ~5:20 https://www.youtube.com/watch?v=g7eGWotwhJw
My Sur Ron hauls my 200lb butt up the same, but more degraded, trail in ~5:30. The only changes from stock are taller handlebars and a 52t sprocket. I can post the video if anyone wants to see it.
The Sur Ron is a monster on single track.
Very nice, took my bike out for the first real ride since December since the weather was finally nice.
One thing I do notice is the bike is pretty loud. People will definitely think you are riding around a gas powered bike, its pretty damn loud and everyone looks. Hopefully the belt drive will help with this. I wonder if it is loud enough to slowly do hearing damage.
Bike still amazes me how easily it can climb stairs, its like you are going up a steep hill and not stairs. I still cringe before going up stairs because I think back to how difficult it was doing it with my hub motor bike.
Bike is also amazing at slow speed riding through woods, like at 5MPH (walking speed) when you have to keep maneuvering around bushes, trees, and other stuff on the ground in deep woods off the trails.
I'm tempted to take it out for a 2nd ride today just to do some stair riding.
One thing I do notice is the bike is pretty loud. People will definitely think you are riding around a gas powered bike, its pretty damn loud and everyone looks. Hopefully the belt drive will help with this. I wonder if it is loud enough to slowly do hearing damage.
Bike still amazes me how easily it can climb stairs, its like you are going up a steep hill and not stairs. I still cringe before going up stairs because I think back to how difficult it was doing it with my hub motor bike.
Bike is also amazing at slow speed riding through woods, like at 5MPH (walking speed) when you have to keep maneuvering around bushes, trees, and other stuff on the ground in deep woods off the trails.
I'm tempted to take it out for a 2nd ride today just to do some stair riding.
aspencreek
10 mW
- Joined
- Oct 15, 2018
- Messages
- 34
Offroader said:
You can pick up one of these Quiet Ride helmets if you are concerned about your hearing while riding. I bought one to use for my regular dirt bikes and it works fantastic. Has earmuffs on the inside that you can adjust with just a few pumps and it goes from just a tiny bit of noise reduction to a ton of noise reduction - almost like you are wearing shooting earmuffs. Then you can release the air with one button and it goes back open again instantly. http://www.quietridehelmets.com/
Allex
100 MW
madin88 said:
Could be due to no friction compared to all the friction created with rollers on the chain.
Allex
100 MW
fechter said:
Can confirm that it is around that.
Here is the stats with wheel off the ground doing 80km/h
View attachment 1
And here is motor only(belt and chain removed) att full throttle:
Around 300Watts goes to belt, chain and the wheel spin.
aspencreek said:
I know a lot of people don't seem to care about hearing loss but it is not something you really want and something that you can get very easily if you don't protect yourself. Even the wind noise from riding a bicycle is supposedly loud enough to cause hearing loss. Really, any loud noise will wear out and kill your hearing cells in your ear and hearing cells do not regenerate, once they die they die. You don't want to be that old guy who can't hear anything because their high frequency hearing is gone.
Makes me think about the wind noise when hitting speeds on an ebike over 40MPH, that is really loud.
While I can't really wear a full face helmet like the one in the link because it will draw too much attention I'm just going to try and reduce noise by going with the belt drive to reduce the chain noise, and also maybe getting some wind deflectors for my bicycle helmet.
I'm thinking something like this if this will help at all, I'm not really sure if it will do anything and the only way is using ear plugs.
http://www.slipstreamz.com/products/the-slip
I may use the sur-ron bike to commute to work about 10 miles each way and there is a lot of wind noise from hitting 30-50MPH, maybe this will help reduce it without having to deal with ear plugs.
Allex
100 MW
Dunno about hearing loss, I used to shoot machine guns without hearing protection and listen to loud music and riding really loud bikes - my hearing is still perfect when tested. After all that, doubt that I will get hearing loss from e-bike rides.
Offroader said:
I noticed it is much quieter with a full face motorcycle helmet, rather than a bike helmet. Covering my ears blocks all the wind noise.
Also, check your chain tension and belt tension if the bike sounds loud. Especially since the x bike should have an O-ring chain that should reduce some of that noise.
- Joined
- Feb 15, 2013
- Messages
- 1,903
sweet custom light bee on surron uk phasebook..
(not my bike or build)
highlights include raised seat strut adapter plates, taller battery for more power & range, aftermarket programmable controller, titanium skid plate..
ref :
https://m.facebook.com/surronebike/photos/a.226680104554242/392661224622795/
(not my bike or build)
highlights include raised seat strut adapter plates, taller battery for more power & range, aftermarket programmable controller, titanium skid plate..
ref :
https://m.facebook.com/surronebike/photos/a.226680104554242/392661224622795/
liveforphysics
100 TW
Beautiful hotrod Sur Ron!!!
3DTOPO
1 kW
- Joined
- Apr 11, 2018
- Messages
- 499
Offroader said:
My X Controller has regen. It was the first batch Luna sold. Luna is now separately selling the X Controller with regen:
https://lunacycle.com/sur-ron-model-x-sine-wave-controller/
Offroader said:
The Sur Ron makes a distinctly electric ziiiing sound.
People see me zooming around, and everyone that has asked about the Sur Ron has assumed it was electric. "Is that thing electric?" is the most common first comment/question, and the next is "That would be amazing for hunting". But I have never had even a single person ask if it's gas-powered or what type of engine it has. Since people around here are used to the scream of ICE dirtbikes, everyone has done nothing but marvel at how quiet it is - not one person has said: "dang your bike is loud".
aspencreek said:
I suppose there could be some places where that would be safe, but for me, it's critical to hear a rare vehicle coming - since they aren't going to hear me coming. :wink:
Allex said:
It's my understanding that chains are more efficient than timing belts, here are results from a test, the chain was 34.6% more efficient:
https://www.bikeradar.com/road/news/article/chain-or-belt-drive-which-is-faster-36074/
3DTOPO said:
I don't think they have regen. I bought one, paid full price ($525) and it doesn't have regen. Also, very little increase in power over stock. Stock was 77 amps, X controller is 83 amps. It is slightly quieter.
It wasn't worth the work to remove it and send it back. If I had more time, maybe. But definitely wouldn't upgrade again.
aspencreek
10 mW
- Joined
- Oct 15, 2018
- Messages
- 34
3DTOPO said:
Luna confirmed that the newest ones DO have regen. They said in an email to me a few days ago "Sur-Ron only just introduced Regen back into their controllers about a month ago."
3DTOPO
1 kW
- Joined
- Apr 11, 2018
- Messages
- 499
n2mb said:
Hmm, in that case, you definitely have a bone to pick with Luna. I would make em send one with regen. Otherwise, that would be straight up false advertising, fraud even. I just tried using the Internet Archive to look back in time, but unfortunately, they didn't archive the X controller page (they did archive the Sur Ron Parts page, however).
But I recall looking before and it did not state that it had regen. It didn't state that it didn't have regen either - which would have been the only right thing to do since the prior batch did...
One problem is Sur-ron makes product changes without telling anyone. This is pretty common with Chinese companies. Bafang did the same thing. ES members figure out what’s going on before the dealers.
3DTOPO
1 kW
- Joined
- Apr 11, 2018
- Messages
- 499
fechter said:
I dunno. Luna said when they got the first batch of X Controllers that it might be the only batch with regen - ever.
The really need version numbers. Without them and using the same product name makes discussion and knowing what you are getting difficult!
3DTOPO
1 kW
- Joined
- Apr 11, 2018
- Messages
- 499
Tommm said:
You got it backward. Eco mode disables regen. I've pretty much never had/wanted to switch the switch to disable regen.
I would say regen braking is the single best upgrade - by far (not for its recharging but that is certainly a bonus). If I want to coast, I can give the throttle an infinitesimal nudge (which isn't even enough power to move the bike on flat ground - which is not possible to give it such little power on non-X controllers). But for me, by far more often, it's just the right amount of braking for going downhill.
Belt drives usually have higher losses when unloaded because of the very high tension, but under load they outperform the chain.3DTOPO said:
Thats from the article:
"The unexpected portion of the results becomes apparent when the efficiency of the belt itself is analyzed in an apples-to-apples tension comparison to the chain, without preload," Smith said. 'These results show the belt becomes more efficient above 208 watts."
Most certainly Allex will measure the no-load comsumption of the belt drive as well and then we have a comparsion.
