A few problems and questions

vinnie · Post by **vinnie** » Thu Sep 11, 2008 1:23 am

Well I have a Nifty 50 which as some of you may remember seized up.

I have the piston kit and am ready to get the cylinder bored to fit the new 0.5mm oversize piston but I have a couple of questions:

No 1, I want to make sure I don't snap the piston rings when I stick them on, does anyone here have any tips for installing them? I am also slightly unsure which piston ring goes where i.e. which one is top and which one is bottom.

No 2, I was fiddling around with the scooter the other day just cleaning it, and I decided to look underneath the transmission case thing (not sure what it's called) and I saw what I assumed to be the centrifugal clutch cog. I played with this a little (carefully) but when I turn the rear wheel, I hear a sort of clicking sound coming from the rear axle. Does anyone know if this is normal? I can't remember if it always did this, I am just a bit worried because I am scared that in taking of the cover, I stuffed something up.

No 3, can I make my own top end gasket out of standard gasket paper?

Thanks all, I have recommended this website to heaps of people by the way

keithw · Post by **keithw** » Thu Sep 11, 2008 10:04 am

#3, no the stock gasket is aluminum. A paper gasket will go away quickly. BTDT. If you want to make one use aluminum flashing material. Just order one or reuse the old one. They aren't spendy and they usually don't go bad.

keithw

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Sep 11, 2008 3:48 pm

Go slow and be careful handling the rings, dont force anything and LUBE THE s*** out of the piston rings, bore, and rod bearings, this ensures that the bike wont "run dry" when first fired.

Bear45-70 · Post by **Bear45-70** » Thu Sep 11, 2008 5:35 pm

For the wrist pin and rod bearings use assembly lube and they almost never have an issue then. There ae ring installing tools out there, but all I have ever use is the thumb nails on each hand to hook the ends of the ring and then stretch it only enough to fit over the piston.

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Sep 11, 2008 5:39 pm

30 weight works fine.

Bear45-70 · Post by **Bear45-70** » Thu Sep 11, 2008 6:14 pm

Kenny_McCormic wrote:30 weight works fine.

Actually if you are gonna use oil, use the same stuff you have in your oil tank. That's what most manufactures will recommend if you don't use assembly lube.

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Sep 11, 2008 7:14 pm

I just use whatever is on the bench in a squirt bottle (usually mower oil).

vinnie · Post by **vinnie** » Thu Sep 11, 2008 7:39 pm

Thanks guys,

Any ideas about the clicking noise from the rear axle?

Cheers