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Post by reverandfunk on Oct 31, 2007 15:05:42 GMT
Going downhill with the wind behind behind the speedo on my standard px125 said 65mph. Is this accurate?
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Post by scooterdisciple on Oct 31, 2007 15:10:51 GMT
old or new px? if new thats about right, they usually do 58mph tops on the straight if its standard!!
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Post by reverandfunk on Oct 31, 2007 15:16:26 GMT
It's an 06 so as good as new, aint noticed what it will do on the flat yet lol all I know is that with an open face helmet on I looked like John Merrick....
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Post by scooterdisciple on Oct 31, 2007 15:56:38 GMT
Yeah I would get a full face, open faces look cool but no good in the winter, not nice when your faces ices up!!!!
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Post by bryno on Oct 31, 2007 19:29:52 GMT
Real world speed is probably 60 when reading 65, 55 when reading 60
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Post by reverandfunk on Nov 1, 2007 9:51:38 GMT
I wondered about the accuracy of the speedo, so when im doing 30/40 is it still inaccurate or is it just at the top end?
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Post by Spence on Nov 1, 2007 20:55:21 GMT
As Bryn said, general rule of thumb with a Vespa speedo is you can knock at least 5mph off what it says.
I've done 60mph according to the speedo on my PX200, and someone riding with me with a GPS said we were actually doing about 52-53mph.
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Post by bryno on Nov 1, 2007 21:44:27 GMT
Yep, I sometimes use a sat nav on mine so get a true MPH, speedo has roughly the same built in +10% (or more) as the average car speedo..
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Post by Spence on Nov 2, 2007 8:17:49 GMT
The of course there's always the margin for interpretation that is the needle wobble!
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Post by joey on Nov 2, 2007 9:31:29 GMT
Standard P2 showed off the clock on a trip back from Newcastle, real speed shown on Garmin 12XL was 57, so in some cases a Vespa speedo is just a downright liar!!! Now I'm running a 210 my speedo cable tends to snap every 25 to 30 miles anyway so I fitted a TOM TOM Rider, now I never get lost and I have an accurate speed all of the time. In my experience the average, not all, but average standard PX 125 will struggle to reach 55 even in the most favourable conditions, especially if still fitted with the cat. Get a decent pipe and a Malossi 166 and you'll be able to sit at about 60 with no modifications to the casings. Tune the casings and you'll notice the difference.
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Post by reverandfunk on Nov 2, 2007 10:50:13 GMT
I did the that 65 was a bit ambitious, especially when the milk float went past.....
Thinking of a simonini exhaust and DR 180 kit
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Post by Devo McDuff on Nov 2, 2007 12:16:05 GMT
Now I'm running a 210 my speedo cable tends to snap every 25 to 30 miles anyway so I fitted a TOM TOM Rider, now I never get lost and I have an accurate speed all of the time. Am digressing a bit here .... how do you have your TOM TOM mounted on the scoot? Didn't realise they were widely used on bikes. Could well be interested myself, would come in very useful if I manage to do a bit of touring round Europe next summer as I plan.
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Post by bryno on Nov 2, 2007 12:39:31 GMT
Blimey, showing 80 and doing 57 is a bit extreme, mine is alot more accurate.. My Garmin sat nav sits nicely in the T5 drinks tray, I run an elastic band across it to the ignition key just in case, but not lost it yet
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Post by joey on Nov 2, 2007 16:17:41 GMT
It's a tom tom rider, specifically designed for bikes. Needs to run off 12 volt supply and fits direct onto supplied mount for scoot. You can also use it in the car. Awsome bit of kit! DR 180 and Simo = sh*te! Malossi 166 and decent expansion, PM or Taffy = good. If you can't afford the pipe then next best choice would be a Sito+ as an interim until you can afford the expansion.
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Post by reverandfunk on Nov 5, 2007 15:28:11 GMT
The bloke at my local scooter shop swears by the DR compared to the malossi. I just do as I'm told lol
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Post by dunworking on Nov 5, 2007 18:59:03 GMT
According to taffspeed, who have always been upfront with me, the difference is simple. If you want a large increase in performance, prefer revvy type motors and are willing to do the necessary porting work then polini or malossi are leagues ahead of a dr. However if all you want is more torque (to give a bit of oomph up hills, or two up), a slight increase in top speed, cant be bothered or don't have the technical ability to do the porting work then a dr180 is worth its weight in gold - simple to fit and relatively cheap.
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james
2nd Class Ticket
Posts: 15
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Post by james on Nov 5, 2007 23:58:25 GMT
my PX 125 speedo reads 5mph when stationary !! Must be dodgy.
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Post by reverandfunk on Nov 6, 2007 8:37:53 GMT
DR180 all the way for me then lol
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barry
2nd Class Ticket
Posts: 38
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Post by barry on Nov 6, 2007 10:44:58 GMT
I know someone with the DR kit and it has made a good difference to his 125 up hills, he didnt want the porting work so thats why the shop sold him the DR.
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Post by Devo McDuff on Nov 6, 2007 12:07:34 GMT
Ha, I think the DR might be the option for me to Rever when I get round to upping the performance. Though this is cos I fall into the lack of technical ability category (with maybe a touch of the can't be arsed) ...
Just had a look at the TomTom Rider spec, they look ace. Definitely on the list (that time forgot).
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Post by Feed Your Head on Nov 6, 2007 13:09:00 GMT
mmmmm.....starting to make me want to spend some more money - unfortunately just when i've been made redundant
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Post by Devo McDuff on Nov 6, 2007 13:15:52 GMT
Sorry to hear about the redundancy Mod. Good luck on the job front. I've actually applied for voluntary severance ... been waiting for an answer for 10 ruddy months. My future TomTom plans depend on it!
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Post by reverandfunk on Nov 6, 2007 14:03:13 GMT
The DR180 will have to wait until after xmas lol.
I just want a bit more oomph going up hill and when the other half is on the back.
Much as i love riding my scooter, technically I know how to change the bare minimum and thats enough for me...
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Post by dunworking on Nov 6, 2007 21:14:35 GMT
I'd like a dr kit for my sprint but I need to get a px 125 engine or just the casings first as the kit on its own doesn't seem to make much difference to the sprint engine - prob due to the lack of ports. Keep looking on ebay and in the mags but they're fetching so much these days (wouldn't mind a T5 engine but just a set of casings fetched £200 on ebay last week) Sorry to hear about your redundancy mod, was it unexpected or have you had chance to make any plans.
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Post by Devo McDuff on Mar 6, 2008 16:21:49 GMT
It's a tom tom rider, specifically designed for bikes. Needs to run off 12 volt supply and fits direct onto supplied mount for scoot. You can also use it in the car. Awsome bit of kit! How do you have this connected to your 12 volt supply Joey? Ta.
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Post by joey on Mar 6, 2008 17:18:51 GMT
Took a wire straight from battery with inline switch and 3a fuse
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Post by Ironduke on Mar 7, 2008 8:20:29 GMT
My speedo is definitely wrong and have to take an average to work out what its doing! Interestingly I find my Tom Tom when fitted in a car never agrees with the speedo, and I've used it in loads of new cars as I hire them for weekends a lot. The Tom Tom always reads 3-5 mph less. I'll get the chance to compare it with a different make next week as two of us are sharing the driving and he has a sat nav.
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Post by joey on Mar 7, 2008 9:13:59 GMT
Duke you'll find that a GPS never agrees with any speedo as any vehicles speedo is a compromise whether it be taken direct from gearbox or from actual wheel speed (as per Vespa Lammie) as for it to be 100% accurate your tyres to remain a constant circumferance, correctly inflated etc so there will always be an amount of deviation. My Tom Tom is blob on with speed read out on my old Garmin XL 12 and generally correct with the "slowdown" read outs you get on the side of some roads. I'd trust a GPS over any mechnical speedo system any day!
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Post by Ironduke on Mar 7, 2008 22:41:34 GMT
fair enough but i thought at least one of the many cars i've used must be accurate, for instance I get 28mph readout on the tom tom when doing 30mph, I think I'll give it another go tomorrow and set 30mph on the sat nav and see if it sets off the go slow sign near me. I remember doing a course on meters and gauges years ago nd the memorable thing was that all of them are most accurate in the mid range rather than at the extemes.
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Post by Devo McDuff on May 31, 2008 19:41:27 GMT
At one point on the M56 the other day my speedo displayed touching 65 while on a downward gradient. Checked the GPS top speed reading for the journey later and it was 58. Scoundrels.
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