Lost drive and lost brakes, belt still working fine

Are you referring to a Vespa scooter? I'm also assuming it starts and idles. If it is fitted with a centre stand park it and get someone to lean on the front to keep the rear wheel off the ground. Start the scooter and DON'T rev it, let it tick over at idle speed. Step back and watch the back wheel. It should slowly turn as it idles.
If it doesn't you could have done a couple of things. You could have jumped the drive belt off or damaged a roller in the gearbox.
if it does turn your better off getting a mechanic to deal with it as the issue could be deeper inside the engine or gearbox.

If the belt wheel is pressed onto a spindle, you need a gear puller. Do you have any pictures of this? I am trying to visualize the problem.

drive shaft popped out or the clutch has gone. might still look attached but it will be disconnected in the dif. push it back in. or remove completely and replace the circlip as this is the only thing that hold the drive shaft in place. driving to fast around corners can pop the drive shaft out. can also lose all the gearbox oil if the seal is broken.

was the belt tight when you fitted new one? if so then you have a gearbox fault. it could be something minor such as the roll pin shearing off that goes through the gearbox pulley (that the belt turns) so the belt spins the pulley but not the gearbox shaft. But in my experience its usually the friction plates and needle rollers that wear out inside the gearbox and i dont hink you can but individual parts to repair the gearbox internals.So it could be an expensive complete gearbox needed.One thing you can try is making the cable that engages the drive as tight as possible on the adjuster and see if that works,if it does it might not last that long as it means the internals are nearly worn out. But check the belt,check the gearbox pulley and check the drive gears on the output shafts ( take the driving wheels off ) and make sure the gears are not full of mud and old grease.

Sounds like you have stripped splines, damaged CV joint or popped axle retaining clip. jack one wheel at time, run slowly in drive with brakes off. the offending wheel will not rotate but axle will. if gearbox/diff axle should not rotate.

Hi, your problem is simple and is all to do with the brake you adjusted. Remove the two bolts, one either side of the brake adjuster, remove the brake assembly, remove clean and lubricate the two pins and the holes they slide in. Reassemble the brake assembly and adjust the centre nut so that the brake comes on and off. This should be about a quarter inch of travel on the short brake lever. Regards Phil.

Look for something broken, slipping, or out of adjustment within the clutch / drive belt mechanism.

Surpinetine belt broken/ slipping could also be belt tensioner problem

hi Garrett,

sounds like a frozen gearbox. check the pulley that is being driven by the motor or by the secondary belt that you are saying. it could be the gear box broke and would not spin. another thing to look at once the gearbox is down is the brake mechanism. it could have broke down and would not run because the brake is not yet released.

tnx 4 using fixya,

drcool

Instead of removing the drum, remove the belt and the cover over the gearbox. The gearbox cover is normaly fixed in place by screws around the drive pulley. There may be a couple of screws under the pulley, if so they can be accessed via holes in the pulley wheel itself. Check for worn or stripped gears. These gears can be replaced if need be, but if this is the case make sure you remove and clean out all the grease first and replace that aswell as it may contain bits of teeth that have come off the faulty gear. As far as I know belt sander drive rollers can not be removed without removing the drive inside the gearbox first.