Modern Vespa

Hello!



What's the difference between a Super/Sprint and a PX kickstart and quadrant?


I know that the small kickstart cog had 13 and 12 teeth respectively but the quadrant looks the same on pictures.

for one thing the splines for the kick arm are different.

beyond that I'm not sure on the viability of an interchange.

what are you trying t achieve?

I want to rebuild a VBC engine from the latest series and I have a SIP Kickstarter lying around in amy store. I assume it's for a PX engine but I'm not sure.

P kicker is very angular. Rises at linear angle and then flattens out kinda parallel to the floor boards.

Sprint/Super is much more of just a gentle curve up.

P:
https://www.scootermercato.com/Scooter-Parts/Kickstart-Levers/BG-6000

Sprint, etc:
https://www.scootermercato.com/Scooter-Parts/Kickstart-Levers/174310

My kickstart is either one of these two:

https://www.sip-scootershop.com/en/product/kickstart-lever-sip-vbb-style_751222BL?usrc=Kickstart


https://www.sip-scootershop.com/en/product/kickstart-lever-sip_150004BL?usrc=Kickstart



Tomorrow I snap a pic of mine.

Now I know:


At the PX/LML version the angle of the fixing bolt is obtuse






Now I wonder that the quadrant gear is interchangeable in the crankcase or not.

You want change quadrant just for mount the lever? Maybe better get suitable lever?

this is the answer if you're just looking to change the lever.

I believe the springs are wound in the opposite direction.

The clocking of the splines on both the quadrant shaft and the aluminum lever are different. If you put a stock P motor in an older bike and try to use your old curved lever so it looks like the original motor, it will point to the sky unless you swap out for the older quadrant as well. That is unless you invest in one of these little beauties from SIP: https://www.sip-scootershop.com/en/product/kickstart-lever-sip-vbb-style_751222PO

Possible, but WHY? but I don't think so, given that you kick both in the same direction, presumably winding the spring TIGHTER on your down stroke, and uncoiling to return lever up.

I only say this because I remember finding an NOS large frame spring from Peter Ricambi. I made the assumption that it would be a replacement for the SS180 spring, that was a bit ratty, I had in the engine. When it arrived, I realized it was wound in the opposite direction. I kept the tatty original and it's worked fine. My mechanic told me the NOS spring is for a PX. Now, I took his word that it's a PX spring, but that I'm not 100% sure of that. The photos are of the NOS spring which does not fit in an SS180 engine because it's wound in the opposite direction.

EDIT::Wait. I see now. I think I'm wrong on that. After looking online, I've realized the nos spring I have is not PX; it's for small frame. Duh.
So, I guess an SS or GS spring is the same as a PX, Sprint. All this time I didn't know it's for a small frame. Sorry for misleading.

Now my brain is all f**ked up. The OP is not even asking about a Super Sport. He's asking about a Super Sprint. I'm not aware of that particular model.

My bad all around.

Is a Super Sprint not a small frame? The mind boggles. Maybe after all this nonsense, I'm right.

Anyway, what I'm sure of is that large frame kickstart springs and small frame kickstart springs are wound in opposite directions.

I think this is the PX version.



post image online


Is it possible to install into a late VBC case if I use a PX quadrant?

I didn't read carefully enough.
Super/Sprint, Super Sprint, and Super Sport are four different bikes.

Nope, that is the curved older style UNLESS it's that special SIP version to work w/ P style motors to make them look older in older frames like yours. Hard to tell in your pic.

Sure, you could install a P quadrant and get a P lever to make your older motor look NEWER, but why?

I have 2 Supers, the original motor in one and a newer P style motor(LML) in the other. They both have the kickstart lever original to the motor.

Yes. It is SIP lever for PX. And for PX engine in older frames.

Only one question - will PX quadrant fit VBC case? Do you have PX quadrant on hands? If no why not just buy suitable VBC lever? Or something is wrong with your VBC quadrant?

The problem with my VBC quadrant is that the O-ring is worn and sweats some oil and the kickstart lever was stuck to the shaft and I had to give it some heat and whack out the shit of it to remove so the old quadrant and the lever is trash because the teeth became crooked in the process.


So I have this SIP lever and I wonder I can put it into the VBC case with a PX quadrant.....

If I'd was on yours place - I'd better buy model correct quadrant and lever.

That's the best advice so far. It's simple and straight forward.

I've considered going reverse and putting a PX quadrant and lever in an old motor. I've got a 2 port in bits sitting in my attic. If a PX frame comes along without engine, I might just do it. But normally people don't go this direction.

I wonder if a PX quadrant can be fitted into an oldie.

Yes it can. But depends on the xmas tree/countershaft diameter where the matching kickstart gear sits... the gear has different internal diameters depending on the model. To be honest I'm not sure if each 12-tooth gear is compatible with each type of 11-tooth quadrant. So probably too much hassle if it doesn't work. I put an entire PX gear set into my VBC case, it needed a particular input shaft to work.

Just to be clear about fitting the wrong lever to a quadrant, it will be either much too high or much too low if wrong.

I know you'd like to save money so if there's nothing wrong with the quadrant in there at the moment it'll be cheaper to buy a Super/Sprint kickstart lever.

I know I'm off-topic, but can I fit a 77' Pinto exhaust and muffler on a 57' Chevy?

Yes, definitely, sometimes 2 of them