Scooterotica

The rear end of the Series 3 is wobbly...more noticeable when slowing down & braking. No play in the rear hub, tyre pressure is spot on. New forks, races, rods, springs, end caps & buffers fitted during the rebuild....any ideas ?

Could it be the rear shock It is the original one i.e. almost 40 years old.

have you used dome nuts to hold your rear wheel on?

mark wrote:have you used dome nuts to hold your rear wheel on?

No mate..... I used good old nylocs.

You might have nipped the fork bearings up to tight, this normally feels like the scooter wants to lean left then right when riding in a straight line. Then needing a little extra correction... only a thought...... but it could be something completely different.

just remembered , the last time my bike felt like a wheel was loose (for about 2 months) the engine mount on mag side snapped off goin round a roundabout . that was f@@king scary that was in 97

I used to experience 'wobble' at the front end on my Imola.
Fitted a new rear shock absorber (Hagon) Sorted!

I think the chromed Indian jobbie i was using was just too soft and compressed so far it took my weight off the front end !!!!!!!

which way does it wobble, left to right or up and down like the wheel is oval.

tyre problems i have had lately. tubeless tyres are tighter on the rims and dont seat properly. cure= use hand soap on the rims take out the valve and inflate with compressed air not a foot pump. the idea is that the tyre needs to expand to the edges of the rim quickly and at high presure or the tyre will just find a comfy spot and just sit there. to shift it from that spot is near impossible. the idea of not fitting the valve is that the tyre will inflate fast, you will then need to deflate and re inflate once the tyre is seated.

the feeling of the tyre being oval i have found to be one of two things. the tyre will have a heavy and a light spot. most tyre firms mark the tyre with a yellow dot which i think is the light side. the light side goes with the valve. if you get it wrong then the heavy side of the tube and of the tyre is on the same side so the wheel is off balance.

the other one i have had is from using slime in my tubes. in a hot day the slime becomes more liquid and runs to the bottom of the wheel and re jels into a lump. i cut a tube open to see this was the case. i think i had put too much in as well.

some old shocks loose damping unless they are fully compressed which means at low speeds you can get rebound bouncing, same as if you run a spring thats too hard for the damping to cope with.

im sure i have not provided a cure but this is this years wheel paranoia for me.

I had that problem with my scoot. At first i had the paranoias that Nick talk about, then I just happened to take the front end off and revise it, then, I retightened all the nuts, then I deinflate the tires and inflate them about five times to make sure no "confi spots" happened in there. Well, it happened the hub had been "eaten" by the teeth from the layshaft. F@@Kin hell! A nice spanish drum as well... Anyhow, I replaced the hub, and problem solved.

J.

Sorted. I had a few issues :-

1/ Rear Shock was knackered.

2/ Bottom steering race was creased.....stripped out the ball bearings and packed them into a well greased bottom steering cone.

3/ Front hub was slightly off alignment.

Result Feels like a different scoot now