Sur-Ron - New Mid drive Bike
- Thread starter Allex
- Start date
aspencreek
10 mW
- Joined
- Oct 15, 2018
- Messages
- 34
3DTOPO said:
That bike is a 240cc 4-stroke. Not a rocket, but made for tight trails. The Sur Ron was surprisingly capable and did some pretty steep hills at a good pace. If it had been a slug that couldn't even keep up with a basic youth dirt bike I certainly wouldn't have gone ahead and bought one after testing yours.
Grantmac
10 kW
motomoto said:
A 2 speed with 100% reduction would be perfect.
Wonder if an IGH could fit between the belt and chain instead of the jackshaft?
10hp would start to be interesting.
Allex
100 MW
Offroader said:No luck with the rear fender, the fender failed on its first ride. It wasn't my bracket, it was the aluminum bracket on the fender that slowly cracked.
While it worked it was really nice being able to ride over anything and get almost no mud thrown up all over your back. I would say it stopped about 98% of the mud in the rear. It seemed a few drops got by the fender when riding in really wet and muddy dirt.
The fender was also kind of annoying in that it did make some noise when riding over stuff, it was too long I think to not be supported on both sides. I see that its going to take much planning to make a fender that looks good, blocks most mud, and is very stable.
I normally don't use fenders as I mostly ride in the summer where one is not needed. At this point I'm just going to wait to see what someone else comes out with for the bike.
Just swap the bracket to a steel one. Thin Alu is never good where you have flex and vibrations.
Rix
100 TW
Allex said:
Grantmac
10 kW
Offroader said:No luck with the rear fender
While it worked it was really nice being able to ride over anything and get almost no mud thrown up all over your back. I would say it stopped about 98% of the mud in the rear. It seemed a few drops got by the fender when riding in really wet and muddy dirt.
The fender was also kind of annoying in that it did make some noise when riding over stuff, it was too long I think to not be supported on both sides. I see that its going to take much planning to make a fender that looks good, blocks most mud, and is very stable.
I normally don't use fenders as I mostly ride in the summer where one is not needed. At this point I'm just going to wait to see what someone else comes out with for the bike.
Can you make a bracket to extend the fender from the seat? I don't think any swingarm mount will work with a fender that long, plus you are adding unsprung weight.
- Joined
- Feb 15, 2013
- Messages
- 1,903
Offroader said:No luck with the rear fender
While it worked it was really nice being able to ride over anything and get almost no mud thrown up all over your back. I would say it stopped about 98% of the mud in the rear. It seemed a few drops got by the fender when riding in really wet and muddy dirt.
The fender was also kind of annoying in that it did make some noise when riding over stuff, it was too long I think to not be supported on both sides. I see that its going to take much planning to make a fender that looks good, blocks most mud, and is very stable.
I normally don't use fenders as I mostly ride in the summer where one is not needed. At this point I'm just going to wait to see what someone else comes out with for the bike.
have you looked at mudhugger rear fenders? I think a few ppl are running those on here.. or maybe cut something similar out of plastic ??
example : https://endless-sphere.com/forums/viewtopic.php?f=6&t=74615&start=50#p1285596
StingerRUS
1 µW
- Joined
- Nov 29, 2018
- Messages
- 4
motomoto said:
Just received 58 tooth sprocket form motomoto and put it on my bike immediately! Thanks motomoto!
Made some comparison table
Allex said:
Good idea, however, the fender flapped around too much, especially the very end which was plastic, so I don't think I want to use this particular fender anymore.
Grantmac said:
I agree if you put any fender on the swing arm its going to be problematic because of the swing arm movement, as I have discovered. The end of my fender which was plastic would make a flapping sound because the end was like whiplashed when hitting things in the rear.
The issue with attaching the mud guard to the seat is that it starts to make the bike look like a dirt bike. I was looking for something a bit more conspicuous and smaller.
efMX Trials Electric Freeride said:
This may be a good option as it looks really light weight. It would need to be plastic like this through the whole length. This may be worth looking into if it doesn't flap around on the swingarm and make noise.
At this point I'm leaning on not using a rear mud-guard and just not ride when the ground is muddy. What I found is the summer is never an issue as the ground dries within hours after it rains.
The winter takes like 3 days after it rains to be dry enough to ride without constantly riding through mud.
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- Feb 15, 2013
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- 1,903
Offroader said:
sur-ronusa.com
artisanstone
10 W
- Joined
- Mar 19, 2018
- Messages
- 80
motomoto said:
With this said do you still think the big controller is the way to go? Or is the bac4000 more proportionate? Did ASI have input on this?
I couldn't find much information or conflicting information on the fastace BDA53RC rear shock, was it was designed for a motorcycle or bicycle?. For some reason the suspension seems really good on the Sur-Ron and made me believe that perhaps it used a motorcycle rear shock.
I did find on their PDF catalog, listing all their suspension components, and the shock is actually designed for a bicycle. It is on a small part of the page with their other DH fork and bicycle shocks. I guess this confirms it is a bicycle shock and must be tuned for a bicycle and not a heavier motorcycle.
Then the question remains if I put on a high end rear shock like the FOX DHX2, will that actually make a noticeable difference in the suspension? It is hard to imagine it will, but supposedly these high end shocks are suppose to be much better than a cheap shock like the fastace BDA53RC.
I've also got my eye on this DVO emerald fork which I think may be the best fork out there right now for an ebike. I wouldn't pay $1700 for this, but I would possibly pick it up for around $1000-$1200 if it went on sale.
I did find on their PDF catalog, listing all their suspension components, and the shock is actually designed for a bicycle. It is on a small part of the page with their other DH fork and bicycle shocks. I guess this confirms it is a bicycle shock and must be tuned for a bicycle and not a heavier motorcycle.
Then the question remains if I put on a high end rear shock like the FOX DHX2, will that actually make a noticeable difference in the suspension? It is hard to imagine it will, but supposedly these high end shocks are suppose to be much better than a cheap shock like the fastace BDA53RC.
I've also got my eye on this DVO emerald fork which I think may be the best fork out there right now for an ebike. I wouldn't pay $1700 for this, but I would possibly pick it up for around $1000-$1200 if it went on sale.
Offroader said:I couldn't find much information or conflicting information on the fastace BDA53RC rear shock, was it was designed for a motorcycle or bicycle?. For some reason the suspension seems really good on the Sur-Ron and made me believe that perhaps it used a motorcycle rear shock.
I did find on their PDF catalog, listing all their suspension components, and the shock is actually designed for a bicycle. It is on a small part of the page with their other DH fork and bicycle shocks. I guess this confirms it is a bicycle shock and must be tuned for a bicycle and not a heavier motorcycle.
Then the question remains if I put on a high end rear shock like the FOX DHX2, will that actually make a noticeable difference in the suspension? It is hard to imagine it will, but supposedly these high end shocks are suppose to be much better than a cheap shock like the fastace BDA53RC.
I've also got my eye on this DVO emerald fork which I think may be the best fork out there right now for an ebike. I wouldn't pay $1700 for this, but I would possibly pick it up for around $1000-$1200 if it went on sale.
I don't have the fox shock but I'm pretty sure you'd notice the difference between the two. That's next on my list but for the time being I'm fairly happy with the std dnm rear shock on my bike. However the fork upgrade from dnm to marzocchi 380 forks was a major improvement in ride quality and jumps handling ability.
motomoto
1 kW
- Joined
- Jun 28, 2010
- Messages
- 458
I have the same shock but haven't tried it yet. It does have more travel at 3.5" vs the stock 3" on the Fast Ace.
I bought it because I can remake the spring retainer end with the proper eye to eye length to balance out the 280mm travel
WP AER 43mm forks.
I bought it because I can remake the spring retainer end with the proper eye to eye length to balance out the 280mm travel
WP AER 43mm forks.
Rix
100 TW
Offroader said:I couldn't find much information or conflicting information on the fastace BDA53RC rear shock, was it was designed for a motorcycle or bicycle?. For some reason the suspension seems really good on the Sur-Ron and made me believe that perhaps it used a motorcycle rear shock.
I did find on their PDF catalog, listing all their suspension components, and the shock is actually designed for a bicycle. It is on a small part of the page with their other DH fork and bicycle shocks. I guess this confirms it is a bicycle shock and must be tuned for a bicycle and not a heavier motorcycle.
Then the question remains if I put on a high end rear shock like the FOX DHX2, will that actually make a noticeable difference in the suspension? It is hard to imagine it will, but supposedly these high end shocks are suppose to be much better than a cheap shock like the fastace BDA53RC.
I've also got my eye on this DVO emerald fork which I think may be the best fork out there right now for an ebike. I wouldn't pay $1700 for this, but I would possibly pick it up for around $1000-$1200 if it went on sale.
Its not so much about the intended design MTB vs MC Suspension as is its about the valving to suite the rider and bike. I had Fox Suspension custom valve a mountain bike shock for single pivot Ebikes (FUTR Alpha) with my body weight running heaving hub motors with lots of un-suspended mass. The valve matrix they came up with was spot on and the best MTB and MC suspension I had ever ridden with only 8" of travel.
Rix
100 TW
motomoto said:
I like where you are going with this Kim.
Flykrisco
1 mW
Got my sur ron x version last month from luna cycles. I have a little over 100 miles on it. Only mods I have done is removing the brake safety switches and kickstand switch. I also instslled a direct mount stem. Im really happy with the sur ron over all but it needs more power for sure.
What are my options at this point in time.
All the mods I want to do are small. fenders, foot pegs, different front light, locking grips, but i need more power.
What are my options at this point in time.
All the mods I want to do are small. fenders, foot pegs, different front light, locking grips, but i need more power.
- Joined
- Feb 15, 2013
- Messages
- 1,903
Flykrisco said:
to get more power out of surron you will likely need a new battery.. one built with higher discharge cells (more amps for torque) and or higher voltage (for speed).. and a programmable controller upgrade..
