Bike shakes accelerating

MIwarrior

MIwarrior

New Member
#1
#1
Hi, all Ive finaly got mini bike an I love it its got the 6.5 but when I go full throttle it shakes alot and It kind feels like I'm reving past the engine and the idle seems high, but i put the bike up on jack stands and gave it the gas it still shook. so I cant be the tires I dont what it its. would apreciate the help.
 
Oldsalt

Oldsalt

Well-Known Member
#2
#2
Vibration or shake? If it is an 'out of balance' engine the bike will respond at the 'RPM' of the engine. Shake would seem to be a much slower movement of the frame. Are you sure that it is not a 'normal' situation found in all minibikes that have a one cylinder engine?
 
Quickdraw

Quickdraw

New Member
#3
#3
MIwarrior said:
Hi, all Ive finaly got mini bike an I love it its got the 6.5 but when I go full throttle it shakes alot and It kind feels like I'm reving past the engine and the idle seems high, but i put the bike up on jack stands and gave it the gas it still shook. so I cant be the tires I dont what it its. would apreciate the help.
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my bonanza shook quite a bit, turned out to be a bent rear axle, still shakes a little of the line but seems like the nature of the mini bike
 
jeep2003

jeep2003

#4
#4
usually when you get a shake like that its the tire. The cheapo wheels dont really have a positive bead so you have to center them up as your inflating them. And cheapo tires are almost always out of round
 
Tom S.

Tom S.

#5
#5
MIwarrior said:
...i put the bike up on jack stands and gave it the gas it still shook. so I cant be the tires I dont what it its...
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jeep2003 said:
usually when you get a shake like that its the tire...
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I agree w/Jeep. And maybe it's not so much out of round as out of balance. The tire could have a heavy spot. Have you tried revving it up w/the chain removed? That takes the tires & wheels out of the picture completely.
 
grindking

grindking

Member
#6
#6
could be all sorts of things really... i like the sugjestions so far also check motor mounts & that its all running inline like the clutches & sprockets?
iv had a few differnt toys with rear bearins goin out that sounds like what your describing
 
MIwarrior

MIwarrior

New Member
#8
#8
turns out most of the bolts on the bike were very lose i tightened them up pretty good the motor stop shaking but now the chain is making a buzzzing noise It doesnt really seem to hurt anything So I was wondering was that nomal. but, I exspected some work for a 300 buck bike :laugh: O and what spark plug does the 6.5hp motor take its a black motor and the sticker got ripped off It looks like the harbor fright 6.5 but its black.
 
Oldsalt

Oldsalt

Well-Known Member
#9
#9
MIwarrior said:
turns out most of the bolts on the bike were very lose i tightened them up pretty good the motor stop shaking but now the chain is making a buzzzing noise It doesnt really seem to hurt anything So I was wondering was that nomal. but, I exspected some work for a 300 buck bike :laugh: O and what spark plug does the 6.5hp motor take its a black motor and the sticker got ripped off It looks like the harbor fright 6.5 but its black.
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I would guess that if the chain emits a buzzing sound that it is far too tight. A sound like that is not normal for any chain drive you are likely to encounter on a minibike.
 
jcdvested

jcdvested

New Member
#10
#10
I have the same vibration with TAV. Did you find out what it was?? I haven't found mine yet. Feels like chain grind/slippage. 7-7-2015
 
jcdvested

jcdvested

New Member
#12
#12
Well at least you responded. So it worked.. :) Just looking for someone with the same problem and good results..

Sent from my SCH-I545 using Tapatalk
 
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