Aprilia SX 125 (same engine as RS 125) No Spark Issues

[Miless]

Hi!

As the title explains, I am having issues with Aprilia. It will not spark whatsoever. Let me begin with saying that I have done a full rebuild during the winter where all bearings etc were replaced, and I stripped the bike down to the frame and rebuilt it.

Now, the weird thing is, ALL electric components are working flawlessly, and so are the mechanical components. Compressions is great, everything moves around and all lights, the horn and the neutral light work fine - however, there is no spark. Before I rebuilt the bike, there were no issues with the bike whatsoever, but now that everything is back together, it just won't spark. I've tried connecting my battery to my Dad's bike but it didn't make a difference, so surely it can't have anything to do with the battery... I also checked all wire connectors and they all seem fine. Does anyone possible know what I am missing here?

Thanks for your time!

Alex

[Kickstart]

Hi

Presume a Rotax 122 engine.

Check the position of the crankshaft pickup (looking at the flywheel from the side, at about the 10 o'clock position), and the clearance between it and the flywheel.

All the best

Katy
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Miless]

[Miless]

[M.C]

[stevo as b4]

Cat equipped late RS/SX/RX models were a bit slated in tests, and de-restricted they made about 5-6bhp less than the early bikes. Meeting euro emissions regs, seemed to make them more peaky and make the Carburation very poor too.

Apparently you could with different pipes/carbs/ignition mapping make a last model RS125 as quick as any other with the same engine type.

Think this goes for most two strokes though, such as the late model DT125RE's, change all the above and set them up right and you could make them like an 89 bike to ride.

[Kickstart]