Post by justin010304 on Jun 30, 2013 8:21:12 GMT -5
Picked up this scooter last year for $300 from a lady who didn't know she needed a motorcycle lisence to drive it. It is a BKM Sauron by Vento. She went down on it when she first got it and had it painted bright sparkly red, hideous IMO.
I rode it for a few months then decided I needed to have it painted. I went with a platinum gray metallic.
While I had the plastic off I took the oppurtunity to upgrade the horn. I picked up a WOLO model 419 bad boy horn www.wolo-mfg.com/air.htm . I found a spot under the front plastic just big enough to fit the horn. Set it up with a relay to make sure the wiring wouldn't fry.
While I was in there I deleted the alarm system, didnt want to risk it leaving me stranded.
After another a couple more weeks I decided I wanted to change to a foam filter from the factory air box. I picked up a foam filter from scrappydogscooters, what a mistake that that was. I put it on and I couldn't get the jetting correct for the life of me. Initially I took it out and it wouldn't pull past half throttle. I tried a larger jet, no go. Tried another still didn't work, put the stock jet back and it was a little better, put in a smaller jet and it got even better. Finally I pulled the filter back off and looked at it.
The "high flow filter" wasn't very high flow, more like choke flow! Threw it in the trash and picked up a uni filter. What a world of difference! Better flow for sure!
Up till this point I never played with the variation weights because it seemed to go pretty good. Well I thought I would try out some different stuff. I weighed wheat was in there, turned out to be 11g rollers. So I ordered some 10g and 12g rollers to see what it liked. Both lost top speed, 10's rev'd too high and 12's wouldn't rev high enough, they both lost top speed. So, the 11's went back in. Went out and did a top speed run, 62.6 mph on flat ground tucked down. This is with a basically stock 125, no fancy spark plug, high performance coil, nothing besides an air filter.
That was about the end of last season. That brings up up to this year. Decided I wanted more power and speed to cruise to work on 55mph roads. Put the scooter in the garage and pulled the motor out and ordered parts.
TAIDA valve cover
TAIDA Ti retainers
NCY 61mm cylinder and head
Bored cases from kspower
2.2mm stroked crank from kspower
BanJin heavy duty starter clutch
NCY 16/38 gears
NCY valve springs
NCY SS high compression valves
Gates powerlink 842 belt
1.5k rpm clutch spring
I also picked up starter clutch tool, flywheel puller and a couple pullers to combine so I could pull the kick start gear off.
So far during the tear down process I have figured out that this freak of a motor has a taller head, longer valves, longer cam chain, longer head studs, fits a 13" tire even though it is a shortcase, and the oil pump sprocket is held on with a c clip not a bolt. The starter idle gear and pin is different the old one won't fit in the new cases, it's too big. All the transmission gears are different. The oil pump sheet metal cover is different, the mounting holes are further apart.
I rode it for a few months then decided I needed to have it painted. I went with a platinum gray metallic.
While I had the plastic off I took the oppurtunity to upgrade the horn. I picked up a WOLO model 419 bad boy horn www.wolo-mfg.com/air.htm . I found a spot under the front plastic just big enough to fit the horn. Set it up with a relay to make sure the wiring wouldn't fry.
While I was in there I deleted the alarm system, didnt want to risk it leaving me stranded.
After another a couple more weeks I decided I wanted to change to a foam filter from the factory air box. I picked up a foam filter from scrappydogscooters, what a mistake that that was. I put it on and I couldn't get the jetting correct for the life of me. Initially I took it out and it wouldn't pull past half throttle. I tried a larger jet, no go. Tried another still didn't work, put the stock jet back and it was a little better, put in a smaller jet and it got even better. Finally I pulled the filter back off and looked at it.
The "high flow filter" wasn't very high flow, more like choke flow! Threw it in the trash and picked up a uni filter. What a world of difference! Better flow for sure!
Up till this point I never played with the variation weights because it seemed to go pretty good. Well I thought I would try out some different stuff. I weighed wheat was in there, turned out to be 11g rollers. So I ordered some 10g and 12g rollers to see what it liked. Both lost top speed, 10's rev'd too high and 12's wouldn't rev high enough, they both lost top speed. So, the 11's went back in. Went out and did a top speed run, 62.6 mph on flat ground tucked down. This is with a basically stock 125, no fancy spark plug, high performance coil, nothing besides an air filter.
That was about the end of last season. That brings up up to this year. Decided I wanted more power and speed to cruise to work on 55mph roads. Put the scooter in the garage and pulled the motor out and ordered parts.
TAIDA valve cover
TAIDA Ti retainers
NCY 61mm cylinder and head
Bored cases from kspower
2.2mm stroked crank from kspower
BanJin heavy duty starter clutch
NCY 16/38 gears
NCY valve springs
NCY SS high compression valves
Gates powerlink 842 belt
1.5k rpm clutch spring
I also picked up starter clutch tool, flywheel puller and a couple pullers to combine so I could pull the kick start gear off.
So far during the tear down process I have figured out that this freak of a motor has a taller head, longer valves, longer cam chain, longer head studs, fits a 13" tire even though it is a shortcase, and the oil pump sprocket is held on with a c clip not a bolt. The starter idle gear and pin is different the old one won't fit in the new cases, it's too big. All the transmission gears are different. The oil pump sheet metal cover is different, the mounting holes are further apart.
