I played with my new pwk's a bit today. It was cold out and I didn't want to die of fumes in my basement so it was basically A quick start and a few throttle pulls. A quick sync by sound and feel.
To test out some theories in this thread I hooked up a standard generic throttle (tc bros first) and the carbs were kinda crap. The left side seemed weak on the pull..But it's what I expected from mr. rigg's input and previous issues I had with a set of takeis on my rd200.
(on an aside the rd is running the stock cable from 75 and it's an odd 2-1 cable in 2 pieces and seems a bitch to get an after market new cable from yambits, so I just lubed the shit out of it and routed it off the factory routing so it just hung loose a bit. Fixed all the carb problems with that bike other than a slight hesitation off take off (which I hear is cleared up with a y intake manifold and 1 filter)
anyway back to the xs..... I shut it down and hooked up my motocross turbo throttle... I forgot the model but removal of the "j" end of the standard XS cable lets me connect right into the stock end piece with just enough room for adjustment... Quick start up and quick sloppy sync and it revved well. Returned well, sounded pretty mean.
Keep in mind a few things.. I didn't ride it yet since it's 12 in buffalo and we have about a foot of snow and I do not run anything by the book or neat on my bike.
I have nothing I do not require on the bike. It's a hardtailed, absolutely no suspension but the fork stripped down bike. It's fun for bar hopping and city cruising.. So I'm not expecting a lot out of these carbs just to run decent and open up quick when I want them too. I just hate vacuum carbs in any capacity because it sucks when they get stuck and often do on one side and you have every person in the world pointing and laughing at you on your bad ass bike puttering on one cylinder maxing out at 45 trying to limp it home. (or worse yet you have the thing wide open and the carb unsticks and you go turbo in traffic)
I don't know my point, just wanted to throw some input based on a bit of trial, error, and a lot of trouble. My major carb problems in "fine tuning" them often resulted more from the cable routing or actual cable or throttle than anything else. If you can stand the hardware on your bars I recommend a motocross throttle with a quick pull and hard return. I also have the ability with the bike style to not route my cables at all. I just let em all hang. Many problems with this.. They sometimes get in the way if you aren't used to it, if you don't run tape on your exhaust they will burn, ect.. but a free hanging cable often leads to less problems for me on throttle and non hydraulic brakes.
older pic, but the only thing I did to this thing in terms of performance was eliminate A LOT of weight (the only thing holding that rear end down is my ass) and throw a brembo caliper upfront which is good for throwing you over the bars or putting 10,000 miles on your rear tire in about 30 seconds.
First impression on the carbs.. They seem to work decent in a casual sense, and are an affordable out of the box alternative then a new set of VMs, dellorto, or lectrons. The overall carb make seems "cheap" and if I ran this bike as a racer I wouldn't get them. They just seem kind of plastic to me. I do look forward to trying the bike out in the spring and will report back when I do. I'm only riding this bike about a month and selling it anyway as I have upgraded my bobber ride with an old shovel and don't have the room
*** oh yea, this was the out of the box settings.. I didn't fiddle with the jetting or needles, I'm kind of confused about the chokes on these things, if they actually work or are just there for show or something, they seemed unresponsive.. All I did was play with the idle screws