Planet Minis

EddieNewYork · 09-28-2009, 01:56 PM

Hey guys,

After riding the 108 and 117 motors in my monkey, I've noticed that after around 50mph, maybe 55+ I get this scary wobble in my handlebars which keeps me from going any faster. Do you guys think replacing those ball bearings in the tube out for some tappered bearings will fix this or perhaps balancing my wheels will do the trick?

rc164racer · 09-28-2009, 01:57 PM

Better chance of curing the problem by balancing wheels than putting tapered bearing in.

fiddy4ever · 09-28-2009, 01:59 PM

just stay on the rear wheel and your good haah

monaghan · 09-28-2009, 02:03 PM

just stiffen up the head, thats probably the best thing. or wheelie the whole time lol

fatcaaat · 09-28-2009, 02:22 PM

I've never experienced wobble on my bikes at speed even though I can get them in the 80's. Obviously check the basics...the nuts are all tight and your stem nut and bearings have not slop in them. Tapered bearings won't matter on this one. The next thing is to check your swingarm bolt and bushings for play and your shock bushings for play. That will make any small movement be more exaggerated at speed.

A few other things to check. Tire pressure. Get those puppies up to 35-40lbs. Finally, make sure that the tires are well seated all around and are having no major wobbles observed when you rotate them while on a stand. After all that, then go get those suckers balanced.

reynolds_brad · 09-28-2009, 02:32 PM

Static balance your wheels, make sure your swingarm bushings arn't shot, Tighten your triples correct to the head tube so there is no play, and have some good damping in your forks.

The most important in that list is the balanced wheels.

chasetheface123 · 09-28-2009, 02:46 PM

Tighten your trips. Make sure the wheels are true, check all bushings/bearings.

slimbo · 09-28-2009, 02:55 PM

my buddy sold his r1 endurance race bike at the end of the season to a street guy. guy complained of shimmy at 120. turned out to be tires that were worn in the center only from straight line riding.... brad would never have this problem....

yzrcr73 · 09-28-2009, 02:58 PM

my 50 does that, i tightened/played around w/ the steering bearing and nut up a lil and its alot better

EddieNewYork · 09-28-2009, 05:13 PM

Cool, thanks for tips guys!

09-28-2009, 01:56 PM	#1 (permalink)
EddieNewYork Buck Fifteen Join Date: Oct 2007 Location: Los Angeles, CA Posts: 1,913 My Mood:	High speed wobble Hey guys, After riding the 108 and 117 motors in my monkey, I've noticed that after around 50mph, maybe 55+ I get this scary wobble in my handlebars which keeps me from going any faster. Do you guys think replacing those ball bearings in the tube out for some tappered bearings will fix this or perhaps balancing my wheels will do the trick?

09-28-2009, 01:57 PM	#2 (permalink)
rc164racer 2nd Gear Member Join Date: Sep 2008 Location: Brisbane, CA Posts: 917 My Mood:	Re: High speed wobble Better chance of curing the problem by balancing wheels than putting tapered bearing in.

09-28-2009, 01:59 PM	#3 (permalink)
fiddy4ever 2nd Gear Member Join Date: Aug 2009 Location: Socal IE Posts: 517 My Mood:	Re: High speed wobble just stay on the rear wheel and your good haah

09-28-2009, 02:03 PM	#4 (permalink)
monaghan 2nd Gear Member Join Date: Dec 2008 Location: Toronto, ON Posts: 967 My Mood:	Re: High speed wobble just stiffen up the head, thats probably the best thing. or wheelie the whole time lol

09-28-2009, 02:22 PM	#5 (permalink)
fatcaaat 3rd Gear Member Join Date: Sep 2004 Location: Arlington, VA Posts: 3,778	Re: High speed wobble I've never experienced wobble on my bikes at speed even though I can get them in the 80's. Obviously check the basics...the nuts are all tight and your stem nut and bearings have not slop in them. Tapered bearings won't matter on this one. The next thing is to check your swingarm bolt and bushings for play and your shock bushings for play. That will make any small movement be more exaggerated at speed. A few other things to check. Tire pressure. Get those puppies up to 35-40lbs. Finally, make sure that the tires are well seated all around and are having no major wobbles observed when you rotate them while on a stand. After all that, then go get those suckers balanced.

09-28-2009, 02:32 PM	#6 (permalink)
reynolds_brad Advertiser Join Date: Dec 2003 Location: San Francisco, CA Posts: 2,719	Re: High speed wobble Static balance your wheels, make sure your swingarm bushings arn't shot, Tighten your triples correct to the head tube so there is no play, and have some good damping in your forks. The most important in that list is the balanced wheels. __________________ pecore nere ufficiose Motoshop Z - Honda50.com

09-28-2009, 02:46 PM	#7 (permalink)
chasetheface123 Chuck Norris for president! Join Date: Nov 2007 Location: Boyne City Michigan Posts: 4,816 My Mood:	Re: High speed wobble Tighten your trips. Make sure the wheels are true, check all bushings/bearings.

09-28-2009, 02:55 PM	#8 (permalink)
slimbo 2nd Gear Member Join Date: Jan 2006 Location: etters, pa Posts: 251 My Mood:	Re: High speed wobble my buddy sold his r1 endurance race bike at the end of the season to a street guy. guy complained of shimmy at 120. turned out to be tires that were worn in the center only from straight line riding.... brad would never have this problem....

09-28-2009, 02:58 PM	#9 (permalink)
yzrcr73 1st Gear Member Join Date: Aug 2008 Location: Straight out of Mahwah,NJ Posts: 241 My Mood:	Re: High speed wobble my 50 does that, i tightened/played around w/ the steering bearing and nut up a lil and its alot better

09-28-2009, 05:13 PM	#10 (permalink)
EddieNewYork Buck Fifteen Join Date: Oct 2007 Location: Los Angeles, CA Posts: 1,913 My Mood:	Re: High speed wobble Cool, thanks for tips guys!

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