Less tuning is a given for sure. I can see it being and advantage at a fuel economy standpoint. I ran a Keihin for over 10 years on my 300. I'm so used to it that tuning is a non issue.

Thanks Dan!!!!!

That is awesome! Keihin carb is great but the guys over at smart carb are doing something special.

Ohh yeah add to the Sherco quiver!

Fuel mileage is a huge plus!!!

No doubt, I think I could almost go back to my stock tank for my XC races and Hard Enduros.

I'm going to be racing enduro this year (my first season) and having only one arm I drop my bike soooo much! Every time I do that I lose a ton of fuel! Can wait to get one of these beauts on my Sherco.....unfortunately I need to find £6,500 for a bespoke arm brace first so I won't be fitting one any time soon but kudos on a fantastic piece of kit Smart Carb! And as always, great video James!💪

@@1armenduro thank you for your comment and kind words. Please reach out to us directly.

@@SmartCarbFuelSystems what's the best email to reach you guys on?

1st of, stop pushing the misconception that a circuit in a conventional carb "kicks in" at any setting. All are effective at all of the time. You don't believe the Main jet effects Idle, well adjust for prefect idle and than take out the main jet. Report back what you have found. Same goes for every circuit component. Yes a main jet will effect idle to much less degree than it will effect WOT but it is effecting it. already from 1/4 throttle he MJ has significant influence on jetting. You say that the carb handles the top and mid range, yet there are multiple metering rod types with different WOT richness specs. also not al displacements will need the same on a single carb. Yet you forget to mention that the metering rod has to be selected for a particular bike in order for it to work properly. When I enquired for a specific bike that's not "off he mill" you haven't even responded at all, let alone with appropriate metering rod range what was the enquiry.

@@mbalunovic you misunderstand us. Yes all circuits are active at all times in a conventional jet/needle carburetor, but their effectiveness varies throughout the throttle range with circuits going into and out of their maximum effect. That was our point as it compares to the SmartCarb which uses one single circuit. Omission isn't deception. Of course we pre-select the correct metering rod for the applications needs, taking into account the engine's characteristics, engine/exhaust modifications, riding style(s), and fuel selection/oil mix ratio. We require that information from every customer and are always happy to advise users on correct metering rod selection for their needs, even offering an exchange program for metering rods for new or second-hand owners. We have never claimed that one metering rod will sufficiently fuel any application. We have series of metering rods with varying grind angles (fuel profiles) to handle the fueling needs of a wide variety of applications. With the correct fuel profile in place the customer needs only position it for the best idle/off-idle response, tuning from the bottom up. Provided that has happened then yes, the metering rod and internal float bowl venting will handle fueling mid to top. At that point the only reason to change the metering rod out to change the top end fueling would be for major engine modification (compression in particular) and/or changing to race fuels, particularly oxygenated race fuels. Lastly, we can't find your name in any of our email accounts or social media messages. Regret that you may have been left unanswered, but we encourage you to try again. Happy to tell you whether or not we have a SmartCarb solution developed yet for your application.

The fuel economy is sick!!!

Stock carb is great!!!

Heck yeah John!!! One day away from knowing!!!

Thanks for watching!

lol...some day

Awesome!!!

Great idea!!!

I have no idea - Matt

The SmartCarb SC2 can be tilted up to 30 degrees down-draft and up to 15 degrees side-to-side, but no further. In your case a manifold may be required for proper mounting.

Interesting! Personally I run my 300 on the low power mode - Matt. I can tell a big difference.

Hi Mauricio, have you tried leaning the clicker adjuster out a few clicks to soften the response a little bit? We tend to ship them a little rich which can make them more aggressive than some people prefer.

@@SmartCarbFuelSystems I really appreciate your support… I think I found the culprit… I installed the Zero Resistance Throttle (ZRT) cam for ODI grips and I just learned that it is a quick turn cam design, so the bike is running so well that every throttle input was giving me too much of a response… I have since installed the ODI S cam (regular throttle travel) and find much more fine control for hard enduro and the bike runs so smooth and responds so well to throttle inputs that I might as well be on a completely different machine… wanted to share this data with you so you can continue providing such excellent customer service.

@@mrmauco thank you for sharing! Let us know if you need anything else, we're always happy to help.

@@SmartCarbFuelSystemsi just wanna have access to the SC in Europe …speaking as a dealer….contacted you guys, long response times, something about possible european setup by some scooter guy who dont respond well either

We've already done that: smartcarb.com/wp-content/uploads/2024/04/AVG-SC2-VS-Keihin-New-Rod-Design.jpg 7 test averages performed same-day. Keihin tune confirmed for ambient conditions by Webb's former mechanic Cody Richelderfer. Smooth, torquey, AND more low to mid power doesn't come at the expense of any less on top. There are no downsides. That the SmartCarb outperforms the Keihin, dialed, on the top end wasn't in question. Our land speed records, youth MX champion racers, snowbikers (BRC endorsed), and more attest to that. Our latest tuning developments in metering rod fuel profiles based on Cody's feedback focused in on that low to mid range and the D-F series metering rods that came out of that process are what Cody and other top hard enduro racers compete with today including the other 3 top finishers at last Sunday's Moab Hard Enduro - not to mention Alfredo Gomez with Rieju.

We have not had the best experiences with Lectron

@@InsideEnduro what were those experiences with the lectron?

The SmartCarb has a variable throttle rate venturi (non-round) designed to keep a stronger signal at the metering rod down low (0-1/4 throttle). Makes for a more crisp, strong off-idle response.

@@SmartCarbFuelSystems dam I shoulda went with the smart carb cuz my lectron sux off idle. I'm thinking of slapping my stock carb back on. Thanks for the info keep those vids coming

James wears XL or XXL. I wear a medium hehehe - Matt

I think Smart Carb may....Not entirely sure tho.

@@InsideEnduro I couldn't find it on their site though.. I can send them an email and ask, thanks!

The SC2 is about 50% heavier, but it more than pulls its own weight 😉

Exactly, which is why we're seeing a huge increase in interest from the paramotor market (Polini Thor & Vittorazi Moster owners primarily).

Smart Carb has carbs for almost every bike!

Would be killer

James was not wearing a GoPro for Romaniacs. I posted Ditrocks GoPro vids from my helmet - Matt

Shoot! I have no experience with those bikes

We've equipped many KX250s over the years and have solid tuning baselines. Feel free to reach out anytime.

Would need multiple carbs

@@InsideEnduro it only has one carb

Maybe, I have never ridden an XR250r with a smart carb installed.

yes!

@@InsideEnduro well crap oh well your videos have convinced me to buy one for my yz250x

@@robertbaker9329, if the floats stick causing a loss of float control, check-valves in the internal vent passages prevent fuel flow out of them and into the venturi but fuel may still flow past the metering rod (main and only circuit). At idle position that opening is very small and any fuel flow is highly restricted. The vent passage check-valves are intended only for short-term or tip over protection. We recommend keeping the fuel turned off at the tank petcock unless actively riding the bike (turn it off in the pits, if laying it down to clean it, during transportation or overnight storage, etc). Every SC2 ships with an in-line fuel filter included to keep the fuel free and clear of debris entering the SC2. Keep the fuel clean, keep it off while not riding, clean the carb annually, and replace service parts including the float needle seat & o-ring every 2-3 years and you're set.

@@SmartCarbFuelSystems ok that all makes sense just turn off the fuel and you won’t have a problem but I ended up ordering a smartcarb from you last Tuesday I’m hoping it ships soon I’m pretty excited I ordered a black one so I’m not sure if there made to order or not but the wait is killing me but I’ve also noticed how often you guys reply to people on KZfaq and that’s amazing I never see a company reaching out to people directly like this you guys are seriously awesome I really do appreciate it

Not true. SmartCarbs are a single circuit fuel system bottom to top. No multiple circuits signing on and off through the range. That's the electric feel - optimum fueling and atomization at every throttle position with no transitions, not lean running. SmartCarbs increase economy by improving combustion efficiency, meaning they put less fuel/oil unburnt charges out of the exhaust. That and they don't spill fuel. Haven't ridden anything that feels better you say. Well you should really try a SmartCarb sometime. They pair excellently with Apex heads. And don't lump the SC2 in with the Lectron, they're not the same thing.

insideenduro.com

Absolutely. The SC2 gives about the same range increase as the typical IMS oversized tank does, only without the added weight, higher center of gravity, and fuel cost savings. Another way to look at it is to do what Cody Webb did at round 1 of the 2024 US Hard Enduro Series at King of the Motos in January. The fuel economy gains the SmartCarb gave him allowed him to skip the final fuel stop headed into the last lap, giving him the advantage of breaking away from fuel injected KTM/Husqvarna racers Trystan Hart and Ryder LeBlond to take the win.

I am not sure. Check with Smart Carb

I am not sure about that.

@@InsideEnduro it depends on the 4-stroke and the fitment challenges it provides whether or not we can equip them with our current top-pull throttled SC2 models. Kits are in heavy development and we'll have more information about 4-stroke kits in the coming months.

interesting! May have to give one a go

We hear that they do make power but at the expense of horrible fuel economy, and for how/where/how far these guys ride that might be a problem. And at the end of the day, even with the STIC, you're still jetting for elevation/temp changes. Our whole MO is to ditch jets/jetting entirely. And SmartCarbs make plenty of power themselves, especially with our new D-F series metering rods for hard enduro 👍

Yes! Head to insideenduro.com

Happily!!!

messy

I run the stock carb on my 2 strokes for now - Matt But...I have quite a bit of experience with the smart carbs and they are legit. I still run the stock carb because I am always perfecting our jetting for customers that buy new 2 strokes from us.

Exactly 💯 🤣🤣🤣🤣🤦‍♂️