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Post by paddedjohn on Jul 18, 2010 0:30:09 GMT
Hi all my PX125 is standard apart from a simonini exhaust, im 13.5 stone and according to my speedo im hitting 80km/50mph tops with the ashtray empty. Any cheap ways of improving this or is it about right? Cheers John
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clive
1st Class Ticket
Posts: 81
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Post by clive on Jul 19, 2010 22:51:14 GMT
great Question... I'm looking 4ward to an answer to this one
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Post by joey on Jul 20, 2010 18:00:39 GMT
It should be a smidge quicker than that fella but not much.
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Post by scootlin on Jul 22, 2010 12:02:38 GMT
just a tip for you, if you look at kits and its speed you want, dont go for the dr180. it only increases the speed by a few mph. on the other hand, it increases the torque tenfold!!
i now laugh in the face of headwinds and hills!!!
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Post by scootlin on Jul 22, 2010 12:07:54 GMT
someone on this forum posted this one day.
CHEAP
FAST
RELIABLE
you can always get two of those words to apply to a scooter, but you will be doing well to ever get all three!!
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Post by joey on Jul 22, 2010 18:29:20 GMT
Fast and reliable every time!
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Post by paddedjohn on Jul 25, 2010 20:13:17 GMT
Cheers everyone, im not really bothered about modifying the engine as i like to keep old things as standard as possible but just thought i may be going too slow. It has been mentioned to me that i should be doing around the sixty mark and was just double checking with folk more knowledgable than myself. Oh and by the way since a full rebuild a year ago (n.o.s) parts it is ultra reliable and i think with the state of our roads nowadays 50mph will probably do me. Once again thanks
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Post by malcymal on Feb 21, 2011 17:19:06 GMT
Just seen this old thread as i was wondering the same about px125 speed. I have a standard 03 plate PX125 MY disc and since i had it serviced its hitting 100KMH every time out. thats 62 mph. Appreciate that speedos can be be out, but its certainly got more punch than my old P125X of years ago.
My first Px125 was lucky to hit 56 mph (had a fresco on it back then). Just wondering if there is anything different about the PX125 MY Disc model regarding engine setup, as it certainly takes off in gears 3 and 4. Standard exhaust. Any ideas why its got such a good top end?!?!? Were these engines different in anyway?
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Post by Devo McDuff on Feb 21, 2011 22:31:51 GMT
The catalytic converter on modern PXs slows them down. Not sure what year it first became standard.
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Post by Smallframe on Feb 26, 2011 20:33:00 GMT
1981 px could need new rings or even a rebore depending on mileage. Could be in need of a serious decoke, ports need polishing, may have had replacement head and squish needs looking at, carb body may have foriegn objects were the jets sit, exhaust hammerred. MMMM where do we start.
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