New Rider
Currently Offline
Posts: 30
Likes: 0
Joined: Apr 7, 2013 19:56:46 GMT -5
|
Post by tkrocks2 on Apr 20, 2014 14:38:03 GMT -5
I just bought a yamaha vino 125 the top speed is 80km/h
I changed the contra spring to a 1000 rpm and 10gram roller weights I want to get 100-120km/h at the highest
but when i get it up to 85km/h it wobbles really bad I noticed it at 80km/h but it was only a little wobble but it is fine at 60-65km/h anything over that it has a wobble.
I was thinking of changing the front forks to a set off of a zuma 125 i noticed the forks are built different but i won't to use my stock vino front end
Please any help on this would be great. Thanks
|
|
|
|
Post by tvnacman on Apr 20, 2014 15:07:05 GMT -5
Check your tire pressure and wheel balance .
John
|
|
New Rider
Currently Offline
Posts: 30
Likes: 0
Joined: Apr 7, 2013 19:56:46 GMT -5
|
Post by tkrocks2 on Apr 20, 2014 17:22:09 GMT -5
checking my tire pressure was one of the first things i did. Not sure how to check the wheel balence i will have to look into that.
|
|
|
|
Post by JerryScript on Apr 20, 2014 18:06:29 GMT -5
The easiest way to check wheel balance is to take it to a tire shop. However, you can do the same at home with a piece of strong rod that will fit through the axle hole in the tire. Spin the tire slowly on the rod, and when it stops mark the bottom point with a piece of chalk. Spin it again a few more times, and if it stops in the same spot each time, you are out of balance. If it stops in different spots each time, you are balanced. You can balance it with weights, resin, or dynabeads.
Tip: You can add dynabeads anytime, even if your wheels are currently balanced. They will do their magic when the wheels do eventually go out of balance, and all wheels do go out of balance over time. Here's a demo video showing how dynabeads work:
|
|
New Rider
Currently Offline
Posts: 30
Likes: 0
Joined: Apr 7, 2013 19:56:46 GMT -5
|
Post by tkrocks2 on Apr 20, 2014 18:25:17 GMT -5
thanks i will have to look into those Dynabeads they seem to be the easyest way to balance wheels.
|
|
|
|
Post by shalomdawg on Apr 21, 2014 0:03:21 GMT -5
howdy and thanks for the demo. I had a new tire put on and they were unable to balance them so they were bad. then I had another shop balance them and they still are not right. maybe the dynabeads will finish the job.
lotsa miles and smiles to ya
ken
|
|
|
|
Post by rockynv on Apr 21, 2014 12:10:41 GMT -5
Dynabeads will not correct things when a wheel/tire is dynamically out of balance or if the tire casing is not round inside. Generally the name brand tires such as Pirelli will not need as much weight to balance them due to the higher precision of their molds. Typically I have seen is only 1/2 to 1 ounce of weight required with the name brands.
|
|
New Rider
Currently Offline
Posts: 7
Likes: 0
Joined: May 4, 2013 8:54:42 GMT -5
|
Post by mater on Apr 21, 2014 19:18:53 GMT -5
You didn't indicate the mileage of the vino. I would torque the front axle to 70 Nm and the rear wheel nut to 105 Nm. those are the Yamaha specs from the service manual. Then take it for a ride. If you do not have a Service Manual, get it here: www.itistheride.com/Yamaha_YJ125_Service_Manual.pdf. |
|
