bogging down

a bog then picks back up is rich and have a deep 4 stroke sound
a lean condition will rev to the moon, sound like a small 85cc scream, but fell like it not's building any power or picking up speed

what needle you have in that 34 ???
 
you have to find a pilot that responds to airscrew adjustments first (assumining the float height is correct)

no sense even revving it past 1/4 throttle if the pilot isn't correct
start at the bottom and work up
that has v-forces in it ?
you did use the insert for the reeds ?
you're not running a reed spacer are you ?
if so, the reed spacer must be in front of the reeds.

just looking for anything we overlooked.
 
you have to find a pilot that responds to airscrew adjustments first (assumining the float height is correct)

no sense even revving it past 1/4 throttle if the pilot isn't correct
start at the bottom and work up
that has v-forces in it ?
you did use the insert for the reeds ?
you're not running a reed spacer are you ?
if so, the reed spacer must be in front of the reeds.

just looking for anything we overlooked.

Yes I have vforce, does infront of it mean engine side or carb side?
 
engine side
we saw that center piece and the piece that holds the reed petals pushing back out under pressure when the reed spacer was behind the vf's, the intake bolted directly to them must hold it in.
 
My buddy runs a 48 pilot and cel needle. Feels spot on. Turning the choke knob is very touchy on his carb. A 1/4 turn is like 3/4 of a turn on the stock carb. We ride at sea level. His air screw is a 2 turns out. Hope this helps.
 
Awk, my spacer is after the reeds. SO i will change that around..But why would it not do whatever its doing from the first few rides around yard? Why start after?
 
Awk, my spacer is after the reeds. SO i will change that around..But why would it not do whatever its doing from the first few rides around yard? Why start after?

the one we found that out on would make it about a mile from my shop, then under heavy power on a hill, the center section of the vf's would push back out into the reed spacer area, essentially leaving an open hole from the carb to the engine and zero reed petal action, or possibly the whole piece pushing in and out, lightly sealing acting as a set of reeds ???

the spacer's gotta go in front of vf reeds !!!!
 
Took carb n junk off. This is what i found.

What the F%&$ caused this? Intake was torqued down to proper specs.

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Outer piece came loose and seperated some how which let the outer petals come loose and were just chilling.
 
Probably had something to do with the spacer being in the wrong spot. Not sure though. Did you check the number on your slide? You will get it nailed this time.
 
yep...thats the result of the center sections pushing back into the open reed spacer area, allowing everything to come loose
snapping that center reed petal piece into the outer cage is what holds the outer petals in place, the inners are held in by those wedge shaped pieces, thats why they stayed put.
reassemble, put reed spacer in front of reeds against the engine, and intake right against the back of the vf's and you'll be dandy I:I

ps...use a very thin layer of ultra copper rtv or yama-bond on all sides of the gaskets, allow to cure overnight and leakdown test it
 
the 2 flaps on the outer cage, circled in orange, are the only thing that holds the outer petals on their notches (green arrows) and in place, when the center section was allowed to push back, those notches came out from under the flaps, allowing the petals to come off, luckily they didn't get inhaled and chewed up !!!!

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