I got it pretty cheap, around $450. It looked rugged with bad tires, missing mirrors, broken levers, dirty and with a broken 12v battery.
It started fine on the kickstarter, so I picked it up and brought it home.
SIP scootershop has been my friend in the process, starting with items like mirrors, turn signals, new switches, emblems, handles, break levers, fuel-hose, belts, led-headlight-bulb (from other store), plug,battery... Just the things to get it up and running and looking like a complete scooter again.
But, as always one wants more power. Specially as I live by the sea with steep roads all around to get anywhere.
The thing was kind of derestricted, the spacer at the belt was removed, the exhaust inlet was opened up, the restrictor tube in the exhaust was welded and the carb-inlet restrictor was removed. Though the main fuel jet was the original 53. It ran lean and hesitated at full throttle.
Wanting to keep the scooter looking original I went down the trial route to get some more power, keeping the original exhaust...
Starting with a main 60 jet and a SIP double layer filter. I also removed the (broken) reed valve and blocked the exhaust-tube. This helped a lot, but it was still running lean and hesitated at full throttle. A new order with main jets from size 68 to 78 was made. I ended up running the 78 size main jet. The needle is on the original setting as it was too rich at higher settings. It seems a tad rich on full throttle, but that should be ok for piston safety. It starts immediately, idles as low as I want and pulls without hesitation.
What I am now testing is 6.1g rollers and the White malossi variator spring. With the original de-restricted exhaust the engine seems to run best at original rpms. It does not really like the high rpm with the 6.1g rollers and 30% stiffer variator spring. It seems the original variator spring with the 6.1g rollers is a pretty good combo for pulling uphill and keeping top speed. It ran out of breath with the stiffer spring both uphill and for "high" speed.
So, I'm pretty happy with the setup, though I might switch back to the original 7.5g rollers to keep the rpms down. Hill-climbing and top speed seems about the same with both roller sets, but initial acceleration is better with the 6.1g rollers.
I can keep 50 km/h up a pretty steep hill and it pulls to about 75-80 km/h on a long straight.
So, if anyone is going the same route, I hope these tips and hints may be of some interrest.
⚠️ Last edited by espen on UTC; edited 1 time
