2 stroke minneralli motorized bike engine slow take off but once gets up to 3/4 throttle it is fast ( and this is brand new motor running 20%1 mix ) after get going fast all sudden falls on it face clutch gear spinning but not drive gear locks up back tire I pull in clutch handel and once i.get down to about 5 to 10 mph release clutch and it spins fine but feels like having hard time moving often could drive sprocket be on wrong ? Idk.wth the problem is please help any ideas ?
2 stroke mineralli drive sprocket problems
- Thread starter Trog38
- Start date
Sloppyslopster
Active Member
Your clutch is probably too loose. If I’m reading what you said correctly, the bike tire will lose power at higher rpm? Meaning you have to tighten the clutch. Another problem could be having is tuning related. If you threw that carb on without adjusting it, it’s super rare that carbs out of the box will run perfectly. If it’s not your clutch and it loses power up top almost like it’s suffocating/ cutting out it means you’re running too lean.
I have been adjusting carb to best I know how it idles really good starts really good slow at getting up to speed but takes off about 3/4 really fast then tire locks up I then pull n clutch wait till bike slows down and release clutch and drive gear is spinning again but seems like something bogging engine I pull clutch lever n I can't spin sprocket on motor that chain goes on by hand which normally on other engines I could it seems to be really hard to move to spin but if go on clutch plate side and spin it I can get sprocket to move once it locks back tire up it seems to run bad and wpmt idle does as soon as pull clutch very slow on take off it got me confused idk what to do never have had this problem bike idols and starts better then any bike I've had I have a bbr volt master stage 2 cdi box and bm20 carb with upgraded expansion chamber exhaust I got less then 20 miles on motor running 20/ 1 mix
Chainlube
Well-Known Member
What size of wheel sprocket? A 40, or 44 tooth will get you up to speed faster.
You don't want to run it wide open until it's broke on. Check your head bolts often.
You don't want to run it wide open until it's broke on. Check your head bolts often.
By any remote chance, are you riding a bike with stock spoked rims that has a coaster brake in the rear???
No have mag wheels 10 spoke and one is cracked right at rim tire feels lil crazy at times maybe has something to do with it I been riding it today after putting chain tensioner and moving chain back tire didn't lock up all the way but I think once clutch gets hot it slips
Ok thnks
36 t sprocket
This is the reason that most of us here in the forum that run mags run only the three spoke mags as they are stronger with much more surface area adhesion to the hub and the rim...I've been riding mine for over 4.5 years now and not so much as a stress crack even with the bike weighing between 80 to 100 pounds and my fat arse sitting on it at around 217 pounds...And I'm running a real torque monster motor, the Phantom 85.