Finally started to pull apart my 81 PECO 200 SWM . Not many of these were made, Not even sure if any others have survived out there.
It was a small company called "Performance Equip CO" here in the UK that modified the std 125 SWM trials , I believe 6 were made,
but some of this is just folklore, would love to hear more snippets about the history of these if anyone really knows ..
Any way I've owned it from Circa 1985, Although my memorys not as good as it was, and apologies in advance for the fuzzy photos.
And Yes it was a black frame model when it was first made...
As I'm going to restore it I thought I'd put up some pictures of the "modified" parts of the engine.
1, Heavier Flywheel and Ignition Backplate modifcation.
2, Bore and Stroke
OK So Measured the bore and it comes in at 63.5mm Diameter.
Doing the maths , IF the Stroke is std for a 125 at 54mm the that makes 171cc.
Bearing in mind this was the era when a 200 fantic was actually 156 !! , then maybe thats that.
But will do some more diggin to see if it is using the 175 enduro 57.5mm stroke crank or even the 61mm 240/280 crank.
I'll do an update to the page when the Piston and crank are out.