Posts
21
Joined
10/31/2015
Location
Santa Cruz, CA
US
Anyone with any experience running the Lectron Carburetor on there 2 stroke at the moto track?
I’m more of an off-road guy that races a 2020 250sx so I’m drawn to the ease of self adjustment for when we’re racing at different elevations. But I really don’t want to lose anything when training at the track during the week, as I've heard they can potentially run leaner then desired. Any experience or opinions appreciated. Trying to get my bike dialed before getting back to racing
I’m more of an off-road guy that races a 2020 250sx so I’m drawn to the ease of self adjustment for when we’re racing at different elevations. But I really don’t want to lose anything when training at the track during the week, as I've heard they can potentially run leaner then desired. Any experience or opinions appreciated. Trying to get my bike dialed before getting back to racing
The Shop
Overall the lectron has been great, installed with no mods, had to adjust idle slightly, but no adjusting needed after that.
Starts easy, idle is crisp, bottom end might be a touch worse, but the mid range and transition from bottom to mid and top end if all flawless. May more predictable and easier to ride now and also doesn't load up on tight low speed technical stuff anymore.
I also love the sand, ride a lot of sand tracks with a lot of wide open time. This is the one thing that scared me away from a lectron at first as I read a couple horror storys about this type of riding on lectrons but in my experience they turned up false because this thing has been great on the sand and heavy wide open riding.
I do however agree a well tuned keihin PWK is just as good as a lectron, had a PWK on my 200 and that thing ran flawless, however just had to be adjusted on elevation trips, the lectron I just leave it and works everywhere.
The one thing shying me away from them is hearing about them running lean during wide open stuff, I feel way better after reading your post.
I bought Langhams 2018 sx150 and swapped the lectron for the keihin PWK fitted with the stic block and this setup was much better IMO.
That said, my biggest beef with lectron is std and not metric bolts, plus, the choke is on the wrong side.
Never mind. I found the videos and not going to cough up that kind of coin only to hap hazardly have to whittle a needle down on my own with a flat bastard.
But the downside is the price.
No comment on the Lectron but the STIC is the real deal. Basically four stroke power curve. Makes 125's an absolute hoot to ride......
The ONE problem we had was that the Lectron seems to start RICHER, not leaner. My son and I _both_ fouled spark plugs on the start line of an enduro. And this was after testing them at home during several rides. I think it was the BR9EIX plug myself as we'd switched him to one before switching to the Lectron and he suddenly had starting issues. Also, the plugs were just wet fouled, no carbon. Dry them off, they'd work fine. I switched back to the stock plug, he's using a BR8EG.. Tens of hours later, not a single fouled plug. I also fouled one my '04 KX 125, which NEVER fouled plugs. On startup.
My experience vs a Mikuni with all the Jarvis mods and JD Jet block gasket is that the Lectron pulls HARD and FAST. The first time I rode the XC-W with the Lectron, I gave it the normal throttle and darn near flipped it. The next thing I noticed is that it'll run at steady throttle (say, on a fire road transfer) with no burbling or sputtering at all. Last thing is that my top end went from about 67 MPH to 75 MPH at which point I didn't go any faster.
The Lectron is not perfect. It still loads up just a LITTLE bit on the low end (agreeing with my _slighty_ rich feeling), but it cleans up with ONE throttle blip.
I'm cheap, tight, and HATE spending $500 on a $7500 dirt bike that's "Ready to Race" (insert sneer here), but I wanted to try a Lectron because I never have and because I'm getting old and running out of time to try stuff. I rode it 15 minutes and told my son- "You're gonna want one".
Here's video of us fouling plugs on the line.
https://www.youtube.com/watch?v=lGBsalprhzA
Pit Row
https://technologyelevated.com/smartcarb-vs-lectron/
My bike seems to be the favorite when the fancy lectron users ride mine. 18 TX300. 38mm kiehen from a 13 or 14 150sx. And a STIC. My low end grunt is next level compared to the lectron 300s.
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