Did some more work on my red Ciao, I really enjoy this bike. Im finding myself more and more comfortable with the front forks at high speeds. I finally passed my Gf who was riding my stock Derbi Variant Sport (Which is a big deal to me). Im still loving the single speed setup because of its speed reliability. Here are some pics of the current radiator setup after I added an overflow bottle. Ive been experiencing average temps from 260-310 but thats just in town riding, I really want to get a reading of what my temps would be like at WOT for miles.
Tucked in there.
I used a M.O.P.E.D. oil tube from our shop for the overflow bottle. I drilled and tapped a 15mm Bing banjo into the fillcap of the radiator and the bottom of the oil tube. I then put a small hole at the top of the bottle for overflow. Its really rad to see the coolant boil up into the bottle after short blasts.
So Im rebuilding my Vespa Grande engine currently for my winter Grande. I figure I should just have one bike to destroy in the snow and rain this year. My Grande has always been an outside only bike and you can totally tell. So far Ive replaced the bottom end bearings and seal, done deeper case matching (64cc Malossi), Bored the intake, cut the crank, and cleaned it up a little. The stock crank has been holding up very well for the amount of miles that have been put on it. No its time to rebuild the stator with my "Go To" format. This is my favorite way to wire a Vespa and it applies to Ciao, Bravo, Grande, Si, and most vespa powered mopeds.
So this is your whole electrical system (you may have another coil for turn signals), points, condenser, lighting coil, and ignition coil. Inspect every wire and solder point for in perfections.
I found that my ignition wire leaving my points was worn.
The red wire attached to this square male plug is for your lights. I dont like this design and I disable it, Ill show that later.
It clips into this square hole
So on your ignition coil there are 2 wires, one (red) goes to your points and the other (blue) is for your brake lights. On Vespas and many other Italian mopeds, there is a safety feature that kills your ignition when your brake light is out. I am not a fan of this setup because it compromises the reliability of the bike because you never know when you might blow a bulb. Grounding this blue wire out eliminates the whole brake light circuit and you never have to worry about losing spark because of it. I suppose if you really wanted to have break lights but have a way around this incase of a blown bulb, you could always have a ground switch for the whole brake light system. Ive had the most success with grounding it out as it is one less thing to worry about (that's important in building mopeds).
Be sure to loctite everything!
I cut the blue wire and ground it out using a small (5mm) circle wire connector and connecting it to the coil bolt. Also be sure to not cut the blue wire too long or too small.
Like I said earlier, I eliminate the square plug that the lighting coil connects to. I used matching red wire (duh) and made it extra long to be safe. If you are familiar with Vespas you will know how frustrating it is on a Bravo/Grande/Si when the female lighting plug comes loose from the square connector. Gah!
The lighting coil bolts down on the bottom of the stator plate, the condenser goes on the right side.
Wires seen here (all three have small circle connectors on them for attaching to points) : Red is from your internal ignition coil to your points, Black goes from your points out to the external ignition coil, and Yellow is from the condenser to the points. Make sure to tuck your wires in the cool channels!
So this case plug used to have the blue (brake light) and black (ignition) wires coming out of it. Since I internally grounded out the blue brake light wire, I have room for the new light coil wire as well as the black ignition wire.
Looks good! I went ahead and stuck the disabled square light plug back in the cases to seal it up. So I run the black to the external ignition coil and the red to the lights. No kill switch, only decomp, one less thing to fail.
So then connect the yellow, black, and red wires to the points and you are good to go..... well time your bike first!
Look at this Malossi 64cc kit! I love the fact that this is an aftermarket part that looks worse than some original parts. This guy came into the shop one day and said "Im out of mopeds, I want you guys to have this" He gave us a box full of Vespa stuff. I dug this rusted Malossi kit out and broke the rings free. It ran decently for a trashed kit and when I took it apart this last time, I checked the ring gap and its was 3 mm! Thats right not .03 or .3 mm! hahah. I also got a very used Vespa Simo pipe from him that I run on this Grande as well. Free build!!!! Its kind of rad to get handed down parts and keep them alive.
Got to build this rad dude! This was non variated before but now its a fun little variated ripper. Lots of new goodies. Parmakit 74cc, Polini head, motor mounts, Tun-r launch lever, Sim Turbo pipe, Modded J spring, Malossi varplus, le party CDI..... and the list goes on.