Trials rider new to Sur Ron

[Twist]

I've just received my X and started exploring how to mod/tune it to make it a serviceable trials trainer. Looking forward to tapping in to the collective wisdom and experience here and contributing when appropriate.

Some of my initial questions are:

- What's the largest front wheel/tire I can put on Killah forks?

- I'm thinking turning off all regen to get momentum over obstacles with the throttle off. Thoughts? Should I just get used to holding some throttle on to keep it out of regen/engine braking?

- Since the programming option is either all on or all off for e-brake interaction with the motor, I'm considering pulling the cable for the rear brake but leaving the front active. I'm thinking that dragging the rear brake with some throttle may resolve some of the no/part throttle awkwardness when crawling around. Thoughts about this approach?

I'd love to hear some thoughts from owners that do trials type riding on their Sur Ron X.

Wes

[CosmicG]

Hey welcome! I'm not a trials guy but hopefully some of this helps.

For the stock wheels (19x1.4) your probably looking at the Shinko 241 2.75x19. They aren't very big tires but unfortunately options are limited especially for Trials type tires. There is a 3.5 version of the Shinko 241 which might fit on the front but it will rub on the rear. If you upgrade your wheels you'll have some other options. With a 21" front wheel and the RST fork you should be able to use the 2.75x21 trials tires out there. The 80/100-21 tires may not fit with the RST fork. I don't have the RSTs but it looks like lowers narrow right below the arch which limits tire clearance. One thing to keep in mind is upgrading to moto wheels and tires adds significant weight which might impact the bikes trials ability. Regardless I would suggest a larger rear sprocket, I just put a 58 on mine and its a nice improvement.

I've turned regen off on mine since it doesn't seem to give you much back and I wanted the bike to feel more like what I'm used to (2 stroke).

I don't have my brake sensors disconnected yet but I will once I start practicing wheelies. :)

[Twist]

Hey welcome! I'm not a trials guy but hopefully some of this helps.

Thanks!

I just received a Stinko 241 that I'm going to put on the rear:


My goal for that tire is to get better grip on obstacles like logs and rocks while leaving less of a trace behind that I've been riding there. I frequently do some trials practice in my backyard landscaping :)

I feel like a 21" front is going to be a really good upgrade but where I really wish I had more tire is on the rear. Lots of torque and skinny tire plus quirky throttle map on the Sur Ron ends up being a challenge. I know of one guy that put the wider tire on the back by dishing the wheel a bit. More research required.

I ordered the 54T sprocket when I ordered the bike. Big improvement but now I'm wondering what the 58 or 60 would be like to ride. With the 54 it's a threat to loop on me. In that regard, I did disconnect the rear brake motor interlock but left the front active. It's working much better to be able to drag the rear brake while keeping some throttle on it for low speed maneuvering. I can tap the rear brake on a wheelie without engaging regen braking but I can grab front brake if it starts to get away from me and get power brakes :)

Some guys seem to be going the MTB wheel route - lighter and less expensive for a 26" solution but I'd be concerned that it wouldn't hold up to the punishment. I'm looking at the Woody's complete turn key 21" wheel for the Sur Ron.

[CosmicG]

I just recently laced up a 19x1.85 rear wheel and put a Heidenau K67 (3.25-19) on it. I believe my wheel is pretty centered (no dishing) and the tire fits without any rubbing. No actual riding on it yet so I'm hoping I don't run into any unforeseen issues since the clearance is somewhat tight. The tire looks great on the bike, but it is significantly heavier and twice the price. Its a shame the Shinko SR241 3.5x19 is too wide and they don't make a 3.25x19. The Shinko 241 3.5x19 should fit with offset and or sprocket spacers but its too wide for the stock rims. It's really easy to start spending a lot of $$$ on these things.

[dules]

I've just received my X and started exploring how to mod/tune it to make it a serviceable trials trainer. Looking forward to tapping in to the collective wisdom and experience here and contributing when appropriate.

Some of my initial questions are:

- What's the largest front wheel/tire I can put on Killah forks?

- I'm thinking turning off all regen to get momentum over obstacles with the throttle off. Thoughts? Should I just get used to holding some throttle on to keep it out of regen/engine braking?

- Since the programming option is either all on or all off for e-brake interaction with the motor, I'm considering pulling the cable for the rear brake but leaving the front active. I'm thinking that dragging the rear brake with some throttle may resolve some of the no/part throttle awkwardness when crawling around. Thoughts about this approach?

I'd love to hear some thoughts from owners that do trials type riding on their Sur Ron X.

Wes

Hey,
glad to see someone attempted to use Surron for trials.
I currently own a Sherco 250 (older model), I'm not an advanced trials riders, but do basic things ok. Now i'm considering switching to Surron as its more versatile for other things and electric.

How is your experience with Surron used for trials, can you do trial technics like balancing, wheel hoping (front,rear), double blip, splat and how is it compared to regular trials bike?

Also I'm wandering is it possible to remove the seat assembly completely, or is the seat frame crucial for the bike (like holding the battery or something)?

[sparlbtx]

Anybody else using a Surron for light trials riding? Seems like OSET 24 would be a good option for an actual electric trials bike at a similar price point but availability is limited.