Flywheel weight Q

JW381
Profile picture for user JW381
Posts
10642
Joined
7/21/2009
Location
Harrisburg, OR US
JW381
Edited Date/Time 4/23/2014 1:10pm
Does adding a flywheel weight have any effect on the longevity of the motor? My first thought was that it could maybe add a little life since the crank would have a little more inertia, possibly taking some of the load off? Looking to get one regardless, just wondering. Is it plug and play, or do you mess with jetting?
|
markit
Profile picture for user markit
Posts
2638
Joined
1/10/2013
Location
Bogalusa, LA US
markit 4/23/2014 8:03am
4/23/2014 8:03am
It possibly could but likely due to the motor not having to work as hard. you wont have to mess with jetting at all, happy trails!
Skerby
Profile picture for user Skerby
Posts
1254
Joined
4/9/2013
Location
Mayes County, OK US
Skerby 4/23/2014 8:07am
4/23/2014 8:07am
I think they actually reduce longevity. By adding a bunch of weight to one side of the crank, the FW weight is putting more stress on the left main bearing. There was a note in the steahly box that said something like that, I ran one for around 80 hrs in a new yz250 with no problems. A guy I know had one bust the key out of his crank after running it for around 200 hrs.
JW381
Profile picture for user JW381
Posts
10642
Joined
7/21/2009
Location
Harrisburg, OR US
JW381 4/23/2014 1:10pm
4/23/2014 1:10pm
Skerby wrote:
I think they actually reduce longevity. By adding a bunch of weight to one side of the crank, the FW weight is putting more stress on...
I think they actually reduce longevity. By adding a bunch of weight to one side of the crank, the FW weight is putting more stress on the left main bearing. There was a note in the steahly box that said something like that, I ran one for around 80 hrs in a new yz250 with no problems. A guy I know had one bust the key out of his crank after running it for around 200 hrs.
Ah, I didn't think of that. That makes sense. If and when I do get one, I'll try to keep an eye on my crank bearings and catch any problems before they turn catastrophic.

Post a reply to: Flywheel weight Q