what kind of carb should I get for a built 686 I am having problems tunning I am open to any recomnendations

 

Lectrons

 

what are lectrons?

 

The best carbs made. It takes a little to get them tuned at first, but day to day tuning as the weather changes is simple. Mr. Horsepower can get you a set.

 

FCR's.

 

What carbs are you running now and what kind of tuning problems?I have a 690 that i have dialed in after many jetting and fuel combinations so if you have any specific questions maybe i can help.What fuel do you run and what size mains do you have in?

 

I am running stock carbs my main jets are 180 and 185 pilot jet is 27.5 and 2.5 turns out on my air fuel screw and 3rd clip that is the best jetting that I have gotten to work for me so far now my problem is that it seems like the like the engine is loading up with gas around 3,000 rpms has good bottom end throtle response it just coughs in the middle the topend runns good also

 

I am also running 50/50 110/92

 

If you are having a mid range stumble it (may )be your needle position but what you should do to remedy it as far as what position will take experimentation on your part.I asked about your carbs to let you know that you can get very good performance with the stock carbs if you spend the time necessary to get them dialed in to your conditions such as altitude,temperature and fuel choice(octane).I have a 12.5:1 compression level on my 690 and i run stock carbs with 175-180 mikuni mains with stock needle jet settings and stock pilot jet and 3 turns out on my air fuel screws.I have learned a lot in the last couple of years from this forum about carbs and getting them dialed in and one of the most important things to remember is jet for your conditions and take your fuel into consideration as well.As you will find through researching this subject using too high of an octane level for your compression can (greatly)decrease your performance as well as having the wrong jetting.If you give the altitude you ride at and list your compression level you will probably get some responses from those who are more skilled in the art of proper carb tuning but i have at least layed out the basics to get you going in the right direction.I have mentioned the octane issue more than once to try and get the point across that it is much more important than most people realize.These are of course just my opinions but i do ride many weekends out of the year and my experiences are real world on my 690 which is at least similar yo your quad so most of this information should apply.