Thanks for putting video out! This pretty much solidifies my decision to buy a carburetor rather than going with a smart carb. I currently have the stock carburetor on my 2017 XC 250... Again I appreciate you putting out this series of videos discussing Fuel Delivery Systems
Never been to Japan I live in the Rocky Mountains but grew up riding in the deserts of so Calif. I watch all your videos very interesting and informative.
I ride a 2017 TE300 with a lectron carb and v force reeds. I can tell by the sound that your bike is running great. I might have to try out the carb your running.
Excellent review. For those of us looking to improve performance overall on the ‘18 XC-W’s and not really looking to increase top end so much, how do we decide between the 36 and the 38 Keihins, and, how de we get info on the jetting options. As a NY trail rider, I don’t have altitude issues so much as trying to keep the bike running smooth and clean, as opposed to the headaches we now have with the Mikuni. Thanks for the input.
hello jaja - My experience has been that the Keihin with STIC is much less sensitive to temp and elevation changes. I ride year round, temps vary from about -5C to 30C, elevation sea level to 2000m and I use the same jet setting and only fine tune the air screw setting.
What kind of fuel are you running through your bike with the Keihin and STIC metering block? I was reading on the HPracedevelopment site that they recommend a minimum of 98 octane combined rating ((RON)+(MON))/2. In my area I have one station where I can get ethanol free 91 octane. VP MS98 or VP C12 would be a hassle to get especially if I wasn't using it for racing.
I discovered that I can buy Sunoco race fuels locally, I just emailed the guys who make the STIC metering block... looks like I may be removing my Lectron carb and giving that a shot. In your experience, how well does the Keihin/STIC combo handle temperature and elevation changes?
Tokyo Offroad thanks that sounds outstanding I think I’m going to order one. I ride from 1,300 to almost 3,000 meters. I emailed the HP guys and I got a response very quickly saying that 91 octane ethanol free pump gas would work fine so I have no reason not to try this.
Very interested in this for the power increase, I am running a 38mm HV Lectron that is pretty spot on... looking at my bank account trying to decide if this is worth it xD
STIC: jetting procedures: o-its HOOOOOOTTTTTTTTTTTTT! Jane and Spot tell Dick, wake up; you have to believe me when we tell you the STIC calibrates differently than conventional carburetors! The main jet for 125 to 500cc will typically be a 182/195; the pilot jet will be 50/55. The air screw; set at 3to 4 turns out. Recommend you use the N3EJ or the N3WK needle. Thank you, Jane and Spot’s STIC Rapid Transit system
mixalis - No, I haven’t ever fitted a Lectron to my bike. I have ridden a friend’s 2017 KTM 250 EXC which had the same performance modifications as my bike (SX Head and VForce reed block). I’ve also tested and reviewed a SmartCarb 38 th-cam.com/video/_UemW9bim_E/w-d-xo.html&app=desktop
Watched your videos of your carb reviews, great BTW, and have read all the comments. Very interesting, you stay very neutral Mark which is commendable to you. Reading between the lines it would seem to me that the results are that the STIC is a better option if you like to fiddle and work on a perfect solution for the specific individuals riding type and elevation. I do wonder however with the effort required and cost / time, if a Lectron or Smart carb is an easier 'fit and forget' carb that will tick 9 out of 10 boxes for most people. So, if you had to do it all again Mark, and pay for it, would you choose the same conclusion? Reason i suggest this question is, i run a Lectron in my 300 and did 'fiddle' with the metering rod but came back to the factory settings, riding hard enduro i get over 100kms before i hit reserve and found the thing will lug up the steepest hills i dare attempt. It does not quite sound as clean and crisp as yours when off the gas or very light throttle, but as soon as you need clean throttle response then it is there. Its an interesting discussion. Sorry to say Mr Boswell but although you answer questions very well, you do present a very biased view towards the STIC system. I have enjoyed all of Marks videos for his total unbiased view and the informative way in which he makes the videos. I think people could make there own decisions after watching on the carbs without it being pushed at them like you have. Please don't take this in a negative way and i don't mean it to sound like your product is not fantastic, just the content of your messages is very pushy, in my opinion.
If I knew what I knew now when I first got my 2017 KTM 250 EXC I would have purchased a Keihin 38mm Air Striker Short + STIC and jetted it as I have it now. When I got the STIC no one else had set it up on a 2017 KTM 250 for off road use so it took some trial and error to get the jetting tuned. But now it's dialed in the jetting doesn't require any fiddling and I'm confident that anyone else with a 250, or 300 could start from the same setting and get very similar results. I've used it from -5C up to 35C and elevation from sea level to 1,800m with no jetting changes and it has perform flawlessly. Power is much stronger than stock, the power band broadened, response is excellent and no loading up when riding slowly. I can highly recommend this setup.
Great. You can measure some values by household appliances. Most simple and accurate is top speed, on tarmac more accurate. Said, it was 120 km/h and became 126 km/h then here is promised 5% gain. As You feel this on every gear switch it is crucial. Another option is smartphone auto/moto GPS app or Sigma MC odometer will give bunch of ciphers hard to understand.
2 Shoes - Most of our riding is in the mountains. There is pretty good variety, including high speed fire roads, single track, woods, hill climbs, rocks and roots. There’s not much flat ground though and no desert like open spaces.
Good question. Would love to hear feedback regarding what could be done better. I'm already working on a new intro video as I have received feedback that it's too long, loud and don't like the music. The new intro video will be ready shortly and will be half the length. But what else could be done better? And what content would you like to see?
Tokyo off road I am Spanish and I follow your channel, but the comment that you have put me does not let me copy it to put it in the translator, if you could put it in Spanish I thank you, thank you.
Buena pregunta. Me encantaría escuchar comentarios sobre lo que podría hacerse mejor. Ya estoy trabajando en un nuevo video de introducción ya que recibí comentarios de que es demasiado largo, alto y no me gusta la música. El nuevo video de introducción estará listo en breve y tendrá la mitad de longitud. Pero, ¿qué otra cosa podría hacerse mejor? ¿Y qué contenido te gustaría ver?
Ok, when I have any doubts, I'm asking the truth. I've been on the channel for a short time and I'm watching all the old videos and I love it, and your way of working on the bikes is also very fine using the tightening torque, not all people do it, a greeting.
This is the worst Clutch and Tire abuse that I have ever witnessed. Not to mention.... are you TRYING to overheat your engine and put it into HARD DETONATION ???? You couldn't devise a worse torture test than giving your bike to these riders. Just maintaining a little bit more momentum, IN A LOWER GEAR, would be FAR easier on the bikes AND the riders. When going up-hill, or through heavy mud or sand, you need to PLAN HOW TO HIT IT, AND MAINTAIN SPEED, if you come to a stop, you may not get out of it. I guess if that's your "thing", to each his own, but I prefer to "go-over", rather than "go through" obstacles. Maybe these guys just never learned how. I'll be relaxing at the top of the hill, waiting on you guys to figure it out. You're not driving a 4X4 rock climbing machine. Just damn..... I'd never abuse my bike like that, you guys much be independently wealthy. . .
By watching this video i just realized again how lazy people with electric start get. When you have kick start only, you truly get to know your bike properly. Awesome vid btw!
Thanks for putting video out! This pretty much solidifies my decision to buy a carburetor rather than going with a smart carb. I currently have the stock carburetor on my 2017 XC 250... Again I appreciate you putting out this series of videos discussing Fuel Delivery Systems
Never been to Japan I live in the Rocky Mountains but grew up riding in the deserts of so Calif. I watch all your videos very interesting and informative.
I feel like this is the hardest I’ve seen you ride like the bike was alive
I ride a 2017 TE300 with a lectron carb and v force reeds. I can tell by the sound that your bike is running great. I might have to try out the carb your running.
Excellent review. For those of us looking to improve performance overall on the ‘18 XC-W’s and not really looking to increase top end so much, how do we decide between the 36 and the 38 Keihins, and, how de we get info on the jetting options. As a NY trail rider, I don’t have altitude issues so much as trying to keep the bike running smooth and clean, as opposed to the headaches we now have with the Mikuni. Thanks for the input.
Another great day in the trails with spot on jetting.... win/win :)
I have a Lectron that runs flawless.
this is probably dumb but is this a 250 or 300 and will the settings for a 250 work on a different model 250
Is the jetting affected by temperature and altitude like stock carb? When riding in conditions of -10 to +30c?
hello jaja - My experience has been that the Keihin with STIC is much less sensitive to temp and elevation changes. I ride year round, temps vary from about -5C to 30C, elevation sea level to 2000m and I use the same jet setting and only fine tune the air screw setting.
air screw setting??
What kind of fuel are you running through your bike with the Keihin and STIC metering block? I was reading on the HPracedevelopment site that they recommend a minimum of 98 octane combined rating ((RON)+(MON))/2. In my area I have one station where I can get ethanol free 91 octane. VP MS98 or VP C12 would be a hassle to get especially if I wasn't using it for racing.
I use high octane pump gasoline (Mobile ESSO F1) which has a RON of 100
I discovered that I can buy Sunoco race fuels locally, I just emailed the guys who make the STIC metering block... looks like I may be removing my Lectron carb and giving that a shot. In your experience, how well does the Keihin/STIC combo handle temperature and elevation changes?
John John - I’ve ridden from 100m to 1,300m and temps 15C to 25C and the current Jetting setup has felt great.
Tokyo Offroad thanks that sounds outstanding I think I’m going to order one. I ride from 1,300 to almost 3,000 meters. I emailed the HP guys and I got a response very quickly saying that 91 octane ethanol free pump gas would work fine so I have no reason not to try this.
Very interested in this for the power increase, I am running a 38mm HV Lectron that is pretty spot on... looking at my bank account trying to decide if this is worth it xD
STIC: jetting procedures: o-its HOOOOOOTTTTTTTTTTTTT!
Jane and Spot tell Dick, wake up; you have to believe me when we tell you the STIC calibrates differently than conventional carburetors! The main jet for 125 to 500cc will typically be a 182/195; the pilot jet will be 50/55. The air screw; set at 3to 4 turns out. Recommend you use the N3EJ or the N3WK needle.
Thank you,
Jane and Spot’s STIC Rapid Transit system
What is your elevation and temp for the settings your running
I’ve ridden from 100m to 1,300m and temps 15C to 25C and the current Jetting setup has felt great.
Have you ever used a Lectron ?
mixalis - No, I haven’t ever fitted a Lectron to my bike. I have ridden a friend’s 2017 KTM 250 EXC which had the same performance modifications as my bike (SX Head and VForce reed block). I’ve also tested and reviewed a SmartCarb 38 th-cam.com/video/_UemW9bim_E/w-d-xo.html&app=desktop
Watched your videos of your carb reviews, great BTW, and have read all the comments.
Very interesting, you stay very neutral Mark which is commendable to you.
Reading between the lines it would seem to me that the results are that the STIC is a better option if you like to fiddle and work on a perfect solution for the specific individuals riding type and elevation.
I do wonder however with the effort required and cost / time, if a Lectron or Smart carb is an easier 'fit and forget' carb that will tick 9 out of 10 boxes for most people.
So, if you had to do it all again Mark, and pay for it, would you choose the same conclusion?
Reason i suggest this question is, i run a Lectron in my 300 and did 'fiddle' with the metering rod but came back to the factory settings, riding hard enduro i get over 100kms before i hit reserve and found the thing will lug up the steepest hills i dare attempt. It does not quite sound as clean and crisp as yours when off the gas or very light throttle, but as soon as you need clean throttle response then it is there.
Its an interesting discussion.
Sorry to say Mr Boswell but although you answer questions very well, you do present a very biased view towards the STIC system. I have enjoyed all of Marks videos for his total unbiased view and the informative way in which he makes the videos. I think people could make there own decisions after watching on the carbs without it being pushed at them like you have. Please don't take this in a negative way and i don't mean it to sound like your product is not fantastic, just the content of your messages is very pushy, in my opinion.
If I knew what I knew now when I first got my 2017 KTM 250 EXC I would have purchased a Keihin 38mm Air Striker Short + STIC and jetted it as I have it now. When I got the STIC no one else had set it up on a 2017 KTM 250 for off road use so it took some trial and error to get the jetting tuned. But now it's dialed in the jetting doesn't require any fiddling and I'm confident that anyone else with a 250, or 300 could start from the same setting and get very similar results. I've used it from -5C up to 35C and elevation from sea level to 1,800m with no jetting changes and it has perform flawlessly. Power is much stronger than stock, the power band broadened, response is excellent and no loading up when riding slowly. I can highly recommend this setup.
Is the N3EJ a YZ250 or YZ125 needle?
CSAR FE - I heard that it was used in the YZ125
Great. You can measure some values by household appliances. Most simple and accurate is top speed, on tarmac more accurate. Said, it was 120 km/h and became 126 km/h then here is promised 5% gain. As You feel this on every gear switch it is crucial. Another option is smartphone auto/moto GPS app or Sigma MC odometer will give bunch of ciphers hard to understand.
36 or 38 carb ?
38mm. I just updated the video description to include this.
Do you ride anywhere else besides the thick of all the trees? I like single track but like a verity of terrain.
2 Shoes - Most of our riding is in the mountains. There is pretty good variety, including high speed fire roads, single track, woods, hill climbs, rocks and roots. There’s not much flat ground though and no desert like open spaces.
Nice Video Bro, Airscrew Setting Please? Thank You💨🤘🏁
You should find it works well with the airscrew 2 ~ 2.5 turns out from full in.
@@TokyoOffroad Thank You💨🤘🏁
why the people in this channel see the videos that are very good and do not like them?
Good question. Would love to hear feedback regarding what could be done better. I'm already working on a new intro video as I have received feedback that it's too long, loud and don't like the music. The new intro video will be ready shortly and will be half the length. But what else could be done better? And what content would you like to see?
Tokyo off road I am Spanish and I follow your channel, but the comment that you have put me does not let me copy it to put it in the translator, if you could put it in Spanish I thank you, thank you.
Buena pregunta. Me encantaría escuchar comentarios sobre lo que podría hacerse mejor. Ya estoy trabajando en un nuevo video de introducción ya que recibí comentarios de que es demasiado largo, alto y no me gusta la música. El nuevo video de introducción estará listo en breve y tendrá la mitad de longitud. Pero, ¿qué otra cosa podría hacerse mejor? ¿Y qué contenido te gustaría ver?
Not sure if that makes sense. Direct from Google Translate...
Ok, when I have any doubts, I'm asking the truth. I've been on the channel for a short time and I'm watching all the old videos and I love it, and your way of working on the bikes is also very fine using the tightening torque, not all people do it, a greeting.
This is the worst Clutch and Tire abuse that I have ever witnessed.
Not to mention.... are you TRYING to overheat your engine and put it into HARD DETONATION ????
You couldn't devise a worse torture test than giving your bike to these riders.
Just maintaining a little bit more momentum, IN A LOWER GEAR, would be FAR easier on the bikes AND the riders.
When going up-hill, or through heavy mud or sand, you need to PLAN HOW TO HIT IT, AND MAINTAIN SPEED,
if you come to a stop, you may not get out of it.
I guess if that's your "thing", to each his own, but I prefer to "go-over", rather than "go through" obstacles.
Maybe these guys just never learned how.
I'll be relaxing at the top of the hill, waiting on you guys to figure it out.
You're not driving a 4X4 rock climbing machine.
Just damn..... I'd never abuse my bike like that, you guys much be independently wealthy.
.
.
Sheesh 😆
By watching this video i just realized again how lazy people with electric start get. When you have kick start only, you truly get to know your bike properly. Awesome vid btw!
Must not be able to afford electric start
ccenduro what you on about? It's clear you missed my point. Instead of riding better you try to get clever over a keyboard.
Drewdude444 what's your point? Skill and money has nothing to do with your comment.
Clap clap
Drewdude444 shame, you ok there lady boy?