RollaCosta
Active member
Gday all
today is the day when i say goodbye to my adventures with J. Costa variators.
The one i had installed, has has a fair run of a 20000km and the rollers are buggered as supposed to be.
i have had 25g rollers installed as they do not make heavier. i wish they were more like 25.5g but not enough steel weight can fit into 34mm shells.
Moreover i believe that this upgrade may have caused overheating and destruction of the driven pulley bearing in the lid, causing the nut to unroll and some further shaft damage.
But it was fun, beating MT-09 and MT-10 off the lights and in the mountain twisties
“We shall make C650 great again”, this time with stock variator mk2 and 42g dr pulleys rollers
I have changed my avatar but wont change username.
All in all, the best J.Costa was for T-Max but with heavier 16g pistons.
They are just no good for larger scooters.
All the best
today is the day when i say goodbye to my adventures with J. Costa variators.
The one i had installed, has has a fair run of a 20000km and the rollers are buggered as supposed to be.
i have had 25g rollers installed as they do not make heavier. i wish they were more like 25.5g but not enough steel weight can fit into 34mm shells.
Moreover i believe that this upgrade may have caused overheating and destruction of the driven pulley bearing in the lid, causing the nut to unroll and some further shaft damage.
But it was fun, beating MT-09 and MT-10 off the lights and in the mountain twisties

“We shall make C650 great again”, this time with stock variator mk2 and 42g dr pulleys rollers
I have changed my avatar but wont change username.
All in all, the best J.Costa was for T-Max but with heavier 16g pistons.
They are just no good for larger scooters.
All the best
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