leaf blower rebuild, eventually to power little bicycle, fun!

[r97]

ok, well i'm 99 percent sure idle is 1800, max is somewhere around 7000. i have decided against the jack-shaft (too complicated), and i'm just gonna a get a 6t and a 72t sprocket, minimum speed will be about 5mph, but it will take a while to reach that, and ill have a kill switch within reach. i'm getting a bit annoyed now, this engine won't start, got spark, put my thumb on plug hole pressed down and pulled the recoil and it blew my thumb right off, so i got compression. i have spayed carb cleaner in there but it just gets blown right out the exhaust, no fire, so i wan't tp figure out whats up with that then ill think about the carb (which has bean cleaned), new fuel, new fuel lines new fuel filter, exhaust doesn't have too much carbon (pull recoil and a puff of air comes out), no sing of leaky gaskets, and the cylinder is nice and tight (so is the crank case), spark plug is snug, and from what i can see timing is good. whats going on!?

edit moved this question two its own thread, its more likely to be acknowledged there.

 

[Bluethunder3320]

ahhh, i hate screwing with 2 strokes. likely an air leak? wait, did you put the rings on right side up?

 

[r97]

i (russ) figured it out, timing was off and these dang things have the key cast into the flywheel, so i gotta buy a whole new fly wheel (only 4.50, but the delays from shipping are what annoy me)

 

[Bluethunder3320]

oh yeah, the keys are so weak.

 

[r97]

ordered the fly wheel, should be here by thurs or fri. then i'll get it running and weld up a mounting bracket for it while i'm waiting for the chain and sprockets

 

[Doc Sprocket]

i found a way to convert a calculator to sorta work as a tach.

You did that how?

 

[r97]

like i said it sorta works as a tach, only approximate, and pretty annoying to use unless your in the shop. prob a you tube video about it. take calc apart, solder wires onto the = button leads, then rig it up to the spark plug, punch the + button, then press the 1 button, so every spark triggers the = button and adds one, get a stop watch and record the # on the calc after 1 minute.


EDIT: you could prob make it better if you really wan't ed, but thats all i was gonna need.
this is how i found out my rpm, i know the max is prob approx because he prob modded it but what ever,
http://www.youtube.com/watch?v=YdmNwQdfhR8

 

[Bluethunder3320]

yup but if there is more load on the motor it gets lowered obviously so shoot for 6,500 or 7,000

 

[r97]

i have bean typing 6,500 into the calc. be cool if idle was brought down a bit too.

p.s. me likey his muffler!

 

[Bluethunder3320]

ahh, got ya.

yeah the box mufflers are weldable on low amps, i did one.

 

[r97]

do you just rip out the guts and weld on a pipe?

 

[Bluethunder3320]

i didnt, i actually repaired one on that chinese motor thats broken now. the bolts came out of the holes, hehe suprise suprise. so i just welded over it.

 

[r97]

hmmmm, unfortunately i'm prob just dreaming here.

 

[Bluethunder3320]

yup, weld 55amps wire feed 1/10 .035 lincoln wire i did it.

practice on an old muffler before doing a good one.

blows holes if your not super careful, but its do able

 

[r97]

prob turn the wire speed up to. so i finally heard this thing run for 1 sec, but i decided i need to clean the carb again, so i do that and sure enough once i put the carb back together the primer doesn't work. good news s i got a lot of work done on the kart!

 

[Bluethunder3320]

saw your post, its looking good! and i still am kartless, lol.

clean the carb thouroughly and start it at WOT running rich, then lean it out properly and adjust idle.

 

[r97]

i will, but i can't get gas into the carb because the primer build is messed up, i'll fix it soon, weekend or something.

 

[Bluethunder3320]

is the primer on the carb? or seperate?

 

[r97]

on the carb, i'm beginning to think i made a really stupid mistake.

 

[Bluethunder3320]

i always want to rebuild a motor even if it runs but then i always end up breaking stuff and it doesnt work. shoot gas or that cold start fluid stuff into the carb and pull until it revvs and dies.