Fixed my bogging at takeoff problem

[802 305]

     Hey guys, been a while since I posted on here, but ive been lurking for quite some time and soaking up alot of info. I recently tore down the whole bike, painted the frame, wheels, bought some 91 forks because mine were so pitted, ran some new wires, rebuilt the carbs, clip ons, used rotors, ss lines, used tank, etc. I wont get into all of that here, because I want to address my one big problem after the carb rebuild/rejet.

     I had a pilot jet that was clogged and stripped - a drill bit and left handed screw worked wonders. So I reinstall carbs, tank, etc, and the bike starts up beautifully.  I had put in 145 mains, 40 pilots, 2 washers ( the #4s came in metric or regular, I felt stupid but used regular because they were smaller ID) and backed the mix screws out 2.5 turns. It idled very smoothly, and sounded good. I went to take a drive, and there was a horrible bogging when releasing the clutch on takeoff from first, so bad it almost stalled, however it would fight through that and run great for the rest of the rpm range. This problem got worse and worse the hotter it got, which to me pointed to running very rich. Messing with the mix screws, turning them 1 turn out would get me a very very lean idle but still bogged, almost exclusively taking off from first, and turning them to 3 made the problem much worse...

     So re-read alot of stuff, and decide to take a washer off - Buddha recommended a single washer so that made sense, even though alot of people went with two. I live in Key West, FL and its super hot and humid. For example we only have two seasons - swamp ass season and mega-swamp ass season. I thought maybe this is was contributing to my richness. It then occurred to me that I had never checked the floats on the bike after switching float needles and possibly bending the tang inadvertently. My left carb was probably a good 4-5mm too high, which is just awful. What I believe was happening was the float was letting in too much fuel and so pouring through the main jet at an rpm more suitable for the pilot jet, though I could be wrong. I throw everything back together, check the floats, and they are close enough. Start it up, take a ride... oh man what a different bike. I dont have a tach or speedo (yeah yeah) but ive owned the bike for 4 years and feel pretty comfortable knowing when to shift... setting the idle... etc.  However before with the clogged and stuck pilot with no mix adjustment I would surge and pop from around 4-6k. It feels excellent now!

     Hope this helps others with a takeoff bogging problem. When I searched, practically everyones answer was ride it like a bike, slip the clutch, your disengaging too early, its a small engine, etc. I can ride easily in the 3k range and not lug, and takeoff very smoothly from low rpm if I want... I dont usually 

edit for snickety readers

[adidasguy]

Maybe you can edit it and add a little better spacing and paragraphing to make it easier to read?

[802 305]

 

[Calpantera]

Yay! Isn't it great to have a decent running bike.. I am dreading pulling my carbs apart..

BTW Adidas, is "paragraphing" a word?   

[weedahoe]

Carbs are east to pull apart. But you should synch them also

[802 305]

+1 weed... I bought the carb syncher, new intake boots and o-rings before I did the carb work but the boots are on backorder so they will ship together...

[weedahoe]

Ive got two pair of boots sitting here..........

[adidasguy]

Yay! Isn't it great to have a decent running bike.. I am dreading pulling my carbs apart..

BTW Adidas, is "paragraphing" a word?   

par·a·graph  (pr-grf)
n.
1. A distinct division of written or printed matter that begins on a new, usually indented line, consists of one or more sentences, and typically deals with a single thought or topic or quotes one speaker's continuous words.
2. A mark ( ¶ ) used to indicate where a new paragraph should begin or to serve as a reference mark.
3. A brief article, notice, or announcement, as in a newspaper.
tr.v. par·a·graphed, par·a·graph·ing, par·a·graphs
To divide or arrange into paragraphs.
[Middle English paragraf, from Old French paragrafe, from Medieval Latin paragraphus, from Greek paragraphos, line showing a break in sense or a change of speakers in a dialogue, from paragraphein, to write beside : para-, beside; see para-1 + graphein, to write; see gerbh- in Indo-European roots.]
para·graphic, para·graphi·cal adj.

[Funderb]

having the needles set very far out of ideal will play hell with the off idle acceleration. for reals.