I need to order one for my 1976 7 speed Hercules GS175. We ran Lectrons back then. I think I would need a 32mm. It came with a 34mm Bing.
Works great , starts first kick and has a nice idle . It really pulls , it took the big hit out of it and it now has real smooth powerband . I went with a 30mm per Kevin , it had a 28 and i was never able to get it to run like I wanted . I have spent many a afternoon trying to jet it. The Lectron took about 20 minutes and runs perfect . I also just put one on my 165 , these carbs really work well . Nice job Dwight with bringing them to our attention.
How cool. I wondered how that little carb would work, I guess just like the big ones! Thanks for the report. For sure. A few months ago I thought everything was fine. he he he Good stuff Tim.
Yes I wonder what's next. I now will own two carbs I didn't even know I needed. Now I can't stomach the thought of putting a standard carb back on even for a test.
Wondering about 4t also ... thinking of doing the sacreligous ... replacing the EFI on my TXC310. Simpler, less weight, same altitude/temperature compensation, less off idle abruptness, more top end?
i think there will be lots of issues going from EFI to carb. Testing starts next week. Also have some interesting things happening, others involved, and maybe dyno runs.
Having just found this thread and skimming through the 24 pages so far, the APT carb sounds good, its more expensive then the Lectron and is not being pushed over the Lectron as a better carb, is this a fair assessment? Moving on to the Lectron, fitment seems to be a problem and the intake boot is rubbing on the shock spring, has this been sorted? The throttle cable needs to be a good fit and does Lectron supply the brass cable holder at a 45% angle, or something else? A longer KTM cable has been mentioned, is that the way to go and who's using it and from which bike? Those points aside i'm also thinking about the size of the carb will it be 36mm or 38mm. I was going down the road of the 36mm, then i'm seeing no difference for the 38mm, now i'm back thinking 36mm.....I really dont know which is best. Does the 38mm fit any better then the 36mm and does the 38mm have the lower rpm response of the 36mm? I don't mind making a few adjustsments to the carb settings but i need it to fit my 2009 bike with out me having to modify any other part of my bike? Plug and Play are we there yet?
The APT was very good, so is the Lectron. Performance wise very close. I found the people at Lectron far EZer to deal with, have been in biz for 30 plus years, came up with the whole metering rod concept (which ATP copied to a large extent), has countless development hours and has piles of product shipping every day. APT does not really have product yet unless you want to by a $900 CNC version. Also the Lectron has an adjustable top end circuit which I like. Even cut down the Lectron is larger than your typical TMX and for sure TMXX which is a really short carb. the stock cable works fine now that ia all sorted out. BUT the stock cable on many of these bikes is to short as stock. Bottom line is you can make it work with the stock cable but the longer one is really the way to go. Walt tested both. I spoke to him again today on the phone and he said it really makes little difference in his opinion. Both work great off the bottom and rev like crazy on top. If you like to rev a lot I would get the 38. I am running the 36 and it has WAY more top end than my TMX ever did and everyone is reporting the same thing. pretty much. you might turn the rod a 1/4 or 1/2 turn as all bikes are very different. Once you ahve it where you like it you should never have to look at it again other than to set the idle if you go big elevation changes.
The latest Lectron's for the 09 and later Huskies has been shortened ~4 mm on the intake side. From what I have read this eliminates the slight rub on the shock. I rode mine with the slight rub for 200+ miles in rough terain last month and you couldn't tell where it was rubbing. The cut down model for the Husky 125 09 and later should eliminate it completely from what I have seen. The made to fit cable is waiting for the supplier to come through. Should be soon. The stock cable will work fine, you just have to re-route it accordingly.
Ok so I fired up the bike with choke on and it started on 2nd kick. It idled really low so I kept it running using the throttle. Turned off choke and as it warmed bike settled in idle. Raised idle a hair and warmed up bike. All seemed pretty good. Seemed to be pretty crisp when revving it. Took it for a quick ride up and down the road and bike seemed to ride pretty smooth and clean through the powerband. Seemed almost electric. Kind of lost that fun two stroke snap though. I havent messed with powerjet adjustment yet until I put in a new plug. My concern is how can you tell if rod is rich or lean when revving bike. I suck at jetting and thats why i got this carb. I believe i will be able to do top end by checking plug but just not sure if i should mess with metering rod. I moved it a 1/2 turn leaner before the install. Only thing I noticed is when i rev bike sounds like it might hang for a millisecond before coming back to idle. Normal? Anybody feel like letting me email a video of it running just pm me your email...would love to have someone who knows what the hell they are talking about to let me know what they think. I also emailed this to kelly. He has been awesome with answering any of my questions Steve
All KTM 2 stroke cables are the same length for the 125s and up, I have used them from the day I went over to the Keihins, much better choice of routing and are only £10 even from a KTM dealer, the air boot from carb to airbox is only £17 from a husky dealer as I cut mine back for a real easy time of getting the Lectron in and out but can return the bike to stock if I sold it . THERES NO WAY even if I did buy another bike would I even think about even riding it without popping the Lectron between the boots first, I ordered a 38mm from Kelly as some of our events are fast in places so thought I may gain a bit on top, cant wait for the new one to arrive just to compare it with the old type one im using now and will report back as soon as it does lol
Its really heard to say from your description but it does sound like it is running good. Yes, it will take away some of the peaks and valleys as now it is running right all the time instead of rich, lean, rich, lean etc. I have also found the you need to dig deeper into the throttle with these carbs and they like it. Give it more gas. Also check out the top end. I think once you get used to the type of power and how to get to it (open the throttle more) you will love it.
Funny as there are many of us talking this way. Walt sold his carb to a buddy and ordered another one from me and called me all in a panic he might have to ride his bike with his old carb (GASP)
Maybe an odd question, but how come the Lectrons are hyped all of the sudden. I mean they have been making these carb's for years, what has changed? For me the APT cast version looks more appealing to the eye (in terms of quality), could be wrong though. To bad they aren't available here in Europe (or at a premium price). Doesn't Keihin or Mikuni have a similar carb?
I wouldn't say hyped but discovered. poor marketing I would blame it on company that is set up by technical people that strive to have the best product in the world but not know how to sell it. personal I don't care to much how it looks if it works well (this is in case of a carb) for women I have a different take on that let it send to you or get somebody bring it over (standard practices when you live in Cambodia ) no otherwise nobody would buy the regular type anymore. Robert-jan
Good question. I did explain this elsewhere but here's the deal. Kevin whom is the prez at Lectron now has worked there for many years (like over 20 I think). The dude that ran it before him, Paul Gast (Spelling?) was big into drag racing and that was the focus. Makes sense as these carbs for some reason have huge top end power. So these got known as drag race or snowmobile carbs. They sold and sell piles to those groups. About 5 or so years ago Kevin took over, bought some equipment like another dyno and wet flow bench and went to work developing more fuel rods. One of the goals was perfect metering across the range. He (they) did it. the carb has been around for a long time and many have used it on MC and loved it in the past. I think it just went largely overlook in the dirt bike groups because we were all focusing on TMX and PWK's as the defacto carbs. So basically the newer metering rods, APT's added visibility and us trying it made this all come about. I am in the same boat, had seen them before, never thought much about it etc. Then John sent me a APT out of the blue and I was like WTF! then Vinduro sends me a Lectron and I am like WTF! As for the APT and quality. The Lectron, despite it's on line pictures is very well built. All the machining is very nice. Everything fits super tight, slide, rod, etc. Cable holder int he slide is EZ and brilliant, idle adjustment is smooth and responsive, carb works fantastic. It IS very well build and you realize this when you have one in hand and take the slide out etc. As for the APT they only have $900 CNC billit versions right now. The cable holder sucks, it is huge, weighs a ton. It does work very good. IT touts altitude compensation which the Lectron does as well. The Lectron has an adjustable power jet for the top end the APT does not. I think this is important. They both use very similar looking metering rods which Lectron has 30 years of development on and APT has a few years and Lectron developed this technology. It is a great idea, Lectron has refined that carb and added features it thought it needed and move development forward int he last 5 or so years and now we are all befitting from it. As far as availability in Europe? We have sent many over seas already. We ship international all the time. if you want a Lectron let me know. thanks Kelly I have zero issues with the quality of this part and consider it very high quality.
I have not adjusted my Lectron (other than idle screw when up to temp) and it just runs good as delivered. It might be a little rich, but I cannot tell from how it runs so I am not gonna adjust mine till I have a reason to. When something runs good, starts easy, idles well, pulls like a freight train and never loads up, I am there. A little more snap and power if I go leaner? Maybe, but I can't use all of the power I have now and I would rather be a little rich than a little lean. This carb really made my 300 very user friendly. Really like how well third gear pulls on hills and such with little clutch work. When I was talking to Kevin, he did say, once I get it to my liking, the only other adjustment I might need to do, is if I am gonna ride above 7K feet (I live and ride 500 feet to 3.5K feet), I might lean the needle a click or two in addition to adjusting the idle. But for the most part, once you set it, you are good to go.
