08 MC-54-250B Linhai - Very slow acceleration from a stop?
by: tweakgames - Sept 5, 2015 12:49:46 GMT -5
Post by tweakgames on Sept 5, 2015 12:49:46 GMT -5
Hello all,
I just picked up a decent 08 MC-54-250B with a Linhai motor in it. It is an "upgrade" from my 150 GY6 Roketa. I am in the process of fixing it all back up to normal person standards, but I seem to have an issue right now that is confusing me.
From a stop, this thing is extremely slow off the line. When I hit the gas, it revs up only a small bit, to about 2.5kish RPMs, and slowly, I mean slowly, accelerates up from there. That is the complete opposite as my Gy6, that wrapped up to 5-6k rpm, and shot me forward. Once it gets to about 20 or 30 mph, it starts to accelerate much better. I have swapped out the variator with a new one, with the same 8 14 gram weights, and it doesn't seem to have made a difference. I have confirmed reving on the stand that the variator and clutch are changing. I am about to go for a test drive later this after evening with only half the weights in the variator just to see if that makes a difference.
I also put on a new GATES POWERLINK 856 23 30 DRIVE BELT, just in case it was slipping or something. I noticed on the variator, that the belt doesn't sit all the way down onto the inside of the variator, I can slip my finger between the belt and the bottom, is that normal?
Anything else I should look at, or into? Maybe the rear clutch springs are too weak?
Thank you for your time.
I just picked up a decent 08 MC-54-250B with a Linhai motor in it. It is an "upgrade" from my 150 GY6 Roketa. I am in the process of fixing it all back up to normal person standards, but I seem to have an issue right now that is confusing me.
From a stop, this thing is extremely slow off the line. When I hit the gas, it revs up only a small bit, to about 2.5kish RPMs, and slowly, I mean slowly, accelerates up from there. That is the complete opposite as my Gy6, that wrapped up to 5-6k rpm, and shot me forward. Once it gets to about 20 or 30 mph, it starts to accelerate much better. I have swapped out the variator with a new one, with the same 8 14 gram weights, and it doesn't seem to have made a difference. I have confirmed reving on the stand that the variator and clutch are changing. I am about to go for a test drive later this after evening with only half the weights in the variator just to see if that makes a difference.
I also put on a new GATES POWERLINK 856 23 30 DRIVE BELT, just in case it was slipping or something. I noticed on the variator, that the belt doesn't sit all the way down onto the inside of the variator, I can slip my finger between the belt and the bottom, is that normal?
Anything else I should look at, or into? Maybe the rear clutch springs are too weak?
Thank you for your time.
I will post some pictures tonight! 
