Since my last postings on this forum I have been building an SS90 Replica which has been fun and scary at the same time, I have always hated the idea of cutting any vehicle frame let alone a classic Vespa,
I know some of you will say I am stupid for cutting but its done now so no going back
The motor I do however need some tech advice on please I have used the best Independent Vespa Mech in South Africa for tuned motors but he is still having a small issue maybe someone can assist with in terms of a flat spot in the Rev range and a spike in CHT in this flat spot at higher Revs (Tony will respond and explain more for me please can someone give us some advice)
motor build as follows,
Racing Crankshaft Mazzucchlli Race
PHBL25B Malossi reed valve kit
DRT Sport Clutch 393.211
DRT Sport Gearbox 29/68 (2.34)
SIP VAPE Sport Ignition
VSP Road race exhaust
Racing Polini Cylinder GS 130cc by Worb5
the bike feels very strong for the small cc. but cant really tell as I have not yet really ridden very hard.
I know there are a few small things that are not perfect and they already bother me on the frame build BUT in my opinion I am happy with the overall outcome of this build.