Increased vibration

Olie · May 27th, 2014, 11:05 AM

After installing the Area P exhaust and rejetting the carbs, I have noticed an increase in vibrations from the 5K RPM range on up. Didn't notice it before as I can really tell on the seat and at the tank. Big Jim and the twins noticed it first and it can get a bit annoying on longer rides. Once I started paying a little more attention to it, I can feel it in the handle bars and every now and then on the foot pegs. It feels like a normal vibration, I'm just wondering with the changes I made if this is normal?

alex.s · May 27th, 2014, 11:09 AM

are your carbs out of sync?

cbinker · May 27th, 2014, 11:09 AM

the elevated power could be elevating the ride height of the bike, might be a suspension issue. since the suspension is cheap.

DaBlue1 · May 27th, 2014, 11:27 AM

Weight. Heavier exhausts not only deaden sound but vibrations as well. You shed about 7 lbs and gained about 12db (with a short muffler). Loose the stock exhaust hanger and you loose the rubber dampener.

Olie · May 27th, 2014, 11:46 AM

Quote:

Originally Posted by alex.s

are your carbs out of sync?

I don't think so. I made a sync board and they are synced at idle. I will hook it up and see what happens at 5K RPM but then wouldn't syncing them at that RPM change the sync at idle?

Quote:

Originally Posted by DaBlue1

Weight. Heavier exhausts not only deaden sound but vibrations as well. You shed about 7 lbs and gained about 12db (with a short muffler). Loose the stock exhaust hanger and you loose the rubber dampener.

This makes sense. The vibration seems normal just more noticeable.

Thanks everyone for your input.

mgentz · May 29th, 2014, 06:31 AM

could just be your over sensitivity to a change as well.

May 27th, 2014, 11:05 AM	#1
Olie New Old Guy Name: Olie Location: Oahu, Hawaii Join Date: Mar 2014 Motorcycle(s): 2011 250R SE Posts: 57 Blog Entries: 1	Increased vibration After installing the Area P exhaust and rejetting the carbs, I have noticed an increase in vibrations from the 5K RPM range on up. Didn't notice it before as I can really tell on the seat and at the tank. Big Jim and the twins noticed it first and it can get a bit annoying on longer rides. Once I started paying a little more attention to it, I can feel it in the handle bars and every now and then on the foot pegs. It feels like a normal vibration, I'm just wondering with the changes I made if this is normal?

May 27th, 2014, 11:09 AM	#2
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	are your carbs out of sync? __________________________________________________

May 27th, 2014, 11:09 AM	#3
cbinker Track Clown Name: Chris Location: Kingman, AZ Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot. MOTM - Sep '15	the elevated power could be elevating the ride height of the bike, might be a suspension issue. since the suspension is cheap. __________________________________________________ TEAM ALFALFA www.apexassassins.com

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May 27th, 2014, 11:27 AM	#4
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	Weight. Heavier exhausts not only deaden sound but vibrations as well. You shed about 7 lbs and gained about 12db (with a short muffler). Loose the stock exhaust hanger and you loose the rubber dampener.

May 29th, 2014, 06:31 AM	#6
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	could just be your over sensitivity to a change as well.