taking front wheel off

[daveMac]

hiya all 
am new this scooter play but now its getting to winter i need to sort a few things one of which is changing the tyres but not sure how ?? any help or links ? cheers 
o yer its a 83 vespa pk 125 
Cheers folks 

[Robjack]

This pretty much covers it...



Getting the rims off the tyre can be a little challenging*, I've got a wooden block that sits in the rim while I walk on the tyre to pop it off. Swearing helps. You should also take care not to trap the tube between the two halves of the rim when you replace it. (Having said that, I've done it and only found out when I came to replace the tyre and it went flat as I split it. I'd done about 4k miles like that.) I partially inflate the tube with the rims loosely nipped up, and then 'walk' it around to seat the tube properly. No need to push the rims fully into the tyre, they will do that when you fully inflate them.


*a right b*st**d

[rab]

there is an art to taking old tyres off split rims one side will come off fine the other side well lets just say a big swear word but i do basically do it the same as robjack. if you have the tryes take the wheels or the scoot to a decent back street bike shop they will charge you around £30 to swap the tyres.i have 3 spare wheels so if i cant be assed getting mad at a tyre i drop them at shop collect when done and swap them over in mi shed

[rab]

bit of online how to you here fella www.vespamaintenance.com/body/split/index.html

[sbwnik]

Get some new tubeless rims and let the supplier do it for you.

But:

Front wheel off - five nuts on the hub.
To split the rim, the other five nuts.
Over inflate the tube to pop the halves apart.
The shallow side should come away easily, pull that off.
Remove the inner tube.
Get a dremmel and cut the tyre off, making sure you get the wire bead that runs around it.
Clean up all the rust off the rim, you'll be a puncture waiting to happen otherwise.
Paint the rim inside and out.

To replace...

Buy new tube and tyre - they're your bones, is it worth using an old tube?
Line the tyre up with the deep side of the rim, make sure the direction of rotation (arrow on tyre) is correct.
Feed the inner tube into the tyre, fitting the valve into the valve hole, so that it points towards the centre of the rim, not the outside.
Inflate the rim so that it's firm, not hard
Offer up the shallow half of the rim, making sure the valve goes over the cut away.
Spin the nuts on, but don't tighten - don't forget the washers
Over inflate the inner tube to around 40psi - this keeps the tube out of the way of the rims and stops it getting nipped.
Once all the nuts are on, tighten to finger tight.
Take a quick look to make sure the gap between the halves and then tighten alternate nuts, a turn at time until all are tight.
Let the air out back to around 18psi.

Done.