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Post by ianmartin40 on Feb 13, 2021 17:18:02 GMT
Hi folks
I have just removed my front wheel for a tyre change and I must be making the task more difficult than it was as I am new to these machines, is there an easy way to do it? Do you need to remove hub at same time or am I missing something?
Ian
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Post by velocekid2 on Feb 13, 2021 23:20:13 GMT
Hi Ian, The answer to this is in two parts, as you don't mention if your scooter is fitted with 8" or 10" wheels. The 8" wheel came in two designs. The initial design was an all steel affair, where the hub assembly was welded to the rim. Easily identified as there are no visible wheel nuts. The only way of removal is to to undo the centre spindle (see description below) and the complete wheel drops out. Tyre removal on these rims is a right illegitimate person. The second 8" wheel design attempted to copy the Vespa's split rim principle, but with a severe design flaw. These wheels can be identified by the 10 nuts surrounding the area between the cast hub and steel wheel rim. To remove this type of wheel, you'll need to drop the entire wheel hub assembly from the suspension arms. Best way is to get extra height on the front wheel for the drop, using blocks under the stand feet. Undo the speedo cable from the hub, however, there should be enough feed on the front brake cable to leave this attached to the brake cam. Next, get something ready to support the hub assembly like a box, tin or upturned bowl. Take digital photos of both sides of the spindle as I think there's more packing on the right side than the left. In fact, take pictures of the entire assembly as this will give you invaluable reference as to the sequence of the elements when rebuilding. Undo the nuts that attach the front spindle to the trailing links and the anti dive arm nut on the RHS front fork leg. I also removed the nuts off the base of the dampers, as they are at full travel, and removed the bolts to move the trailing arms off the spindle. To remove the front wheel rim, look at the back of the hub face and you'll see the hub has 5 cast lugs to which the wheel studs are affixed. You only have to remove the 5 wheel nuts that are fitted to the studs to get the wheel rim off. Please note if it's the rear wheel you're removing, you'll have to remove the exhaust pipe!! Once the rim is off the hub, undo the 5 remaining nuts that hold the rim halves together. Deflate the inner tube to help coax the rim halves apart. Patience is required for this task as the split rims allow water to form corrosion inside on the mating surfaces. Resist the temptation to use any metal items to try and force the rims apart. When refitting an inner tube, ensure the valve stem is facing the correct way - see separate topic on this! as you don't want to have to do this twice!! The 10" wheel is as the 8" wheel drop, but easier as there are just 5 wheel nuts to remove, as the design reverted back to a solid wheel configuration. The 10" wheel has no inner tube, so it's just the battle with tyre levers to get the tyre off and replaced.
HTH
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Post by ianmartin40 on Feb 14, 2021 16:37:00 GMT
That comprehensive explanation is very helpful thanks My velocifero has the 8 inch wheels with the split rim very similar to the old Vespa’s . The engine, wheels and hubs on mine had been painted satin black as I assume they looked tatty and was now flaking so I have given the wheels a buff down and recoat, the rear wheel now has a new tyre fitted and is back on the bike.
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