Gothlife
1st Class Ticket
Rookie on the learning curve.
Posts: 84 
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Post by Gothlife on Jul 3, 2017 7:58:18 GMT
Good morning.
So the time has come to spend a couple of hundred quid on the PX125. The 20mph I lose riding up the one big hill I go up on my way to work is starting to get to me... I need more power!! Top end speed I can take or leave I just want abit more action off the line and up through the gears...
I've drilled out my air filter and my main jet is sitting at a 100. Scoot does seem to have a slight over fuelling issue when idling but I think I've fixed that by turning up the idle speed. in general the thing rides pretty nice if not slightly aggressive. Anyway that's getting away from my question.
What is my next move?
I'm guessing an exhaust is my obvious next step but is there any other little tips for me? Am I missing some simple power increases?
My electric start is currently busted so would fixing this and getting a new CDI help me out or am I better just using the kick and eventually removing the electric starter?
A kit will probably be coming at the end of the year but for now I wanna do as much as I can for around £200-£250.
Any advice will be highly appreciated.
Cheers. Kirss.
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Post by henri on Jul 3, 2017 9:28:04 GMT
simples , sip road2 pipe an a 102 main jet , about £120 an 20mins work . H
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Post by pxguru on Jul 3, 2017 9:46:26 GMT
Was just about to write something H. A SIP road is what to buy for sure. vespa.proboards.com/thread/6216/base-gasketsFor even more power without spending anything much, put some more base gaskets on. Like I have said before, the first part is to add up to 1.0mm of base gaskets, this will go faster with this alone. Although, if you like that and want some more, take the 1.0mm back from the cylinder head, either by sanding on glass or on a lathe (a 125 head is 39 quid new, so almost disposable). If after you have the SIP Road on and still need more power, square off the top edge of the oval exhaust port with a Dremel or hand file (more details available if needed). Should be keeping up with a DR kit by this point  |
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Gothlife
1st Class Ticket
Rookie on the learning curve.
Posts: 84
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Post by Gothlife on Jul 3, 2017 11:39:20 GMT
Well this is exactly what I was after! Thanks alot.
Ha, it'll not be a 20 min job if 17 years of rust and dirt have anything to say about it! Still, one I would be comfortable doing myself.
Yer a SIP 2.0 was what I was thinking, seems to be the best all rounder.
The base gasket trick also seems like a good little trick that might be worth a shot for a couple of months before I get a new head. Will get a slab of them ordered at the same time as the exhaust.
Thanks a lot people!
Kriss.
Thank's again
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Post by bignico2411 on Jul 3, 2017 13:00:06 GMT
Was just about to write something H. A SIP road is what to buy for sure. vespa.proboards.com/thread/6216/base-gasketsFor even more power without spending anything much, put some more base gaskets on. Like I have said before, the first part is to add up to 1.0mm of base gaskets, this will go faster with this alone. Although, if you like that and want some more, take the 1.0mm back from the cylinder head, either by sanding on glass or on a lathe (a 125 head is 39 quid new, so almost disposable). If after you have the SIP Road on and still need more power, square off the top edge of the oval exhaust port with a Dremel or hand file (more details available if needed). Should be keeping up with a DR kit by this point guru, the base gasket thing is still on my to-do list, but I'm curious re taking the 1.0mm off the cylinder head. Forgive me for the stupid question, but how do you measure what you've taken off? And I assume doing this would mean another upjet? |
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Gothlife
1st Class Ticket
Rookie on the learning curve.
Posts: 84
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Post by Gothlife on Jul 3, 2017 13:57:15 GMT
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Post by pxguru on Jul 3, 2017 14:30:35 GMT
That one wont fit on a 125, as its for a 200. This one will though www.sip-scootershop.com/en/products/~/products/gasket+cylinder+base+th+10mm+_90783300 its for a Polini but that should be ok. The best way is just buy a sheet of 1mm ally (about a quid) and make your own. With the head, measure the height of the lip before and after. Best way in the shed is to hold it on an 80 grit belt sander to get the most off then progressivly finer wet and dry on glass. Is a bit animal but works fine and only takes 30 minutes  |
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Post by sime66 on Jul 3, 2017 14:35:15 GMT
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Gothlife
1st Class Ticket
Rookie on the learning curve.
Posts: 84
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Post by Gothlife on Jul 3, 2017 17:29:17 GMT
Well that's my shopping list sorted. Cheers both of you.
Farther inlaw has a trade account so probably do it through him.
Just gave the beast a wash, actually scrubs up ok (apart from the tatty mudguard!)
Thanks again!
Kriss.
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Post by ironsloth on Jul 4, 2017 17:01:27 GMT
If the electric start is causing problems, get rid of the starter and blank the hole. Change the flywheel to a non electric start and change the cover too. Getting rid of that dead weight is always a good move in my eyes. As for any power increase, I've no idea but it made me feel better about mine..... Oh yeah, change that mudguard!! 😆
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pecker
1st Class Ticket
Posts: 65
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Post by pecker on Jul 5, 2017 10:45:13 GMT
Hello gothlife, Really great to read about your enthusiasm, I noticed your top-speed in your signature, are you using a standard speedo or do you have a SIP speedo and have you checked it with a gps or satnav  ? All the best pek |
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Gothlife
1st Class Ticket
Rookie on the learning curve.
Posts: 84
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Post by Gothlife on Jul 5, 2017 11:55:33 GMT
Cheers Pecker.
Well, it's the standard speedo going down hill... To be honest it waswaving about over 65 but the 66.6 fits the spooky image. Hahaha.
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Post by pxguru on Jul 6, 2017 3:30:05 GMT
You might be better changing that signature to a less spooky 55.5 mph |
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pecker
1st Class Ticket
Posts: 65
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Post by pecker on Jul 6, 2017 9:59:01 GMT
If your going to get right into your tweaking/tuning i would highly recommend that you get a SIP speedo fitted, if you get it dialled in correctly it is superb.
Obviously you have the accurate speed, but also you have your engine temperature to look at, and you can even see your RPM'S as you go through the gears etc....
I have also got a little gps (size of a match box) fitted via velcro just above speedo in little groove for cross reference.
Have fun.
pek.
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