New PCX top speed???

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sendler2112
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Re: New PCX top speed???

Post by sendler2112 »

The speed reduction is perfectly cyclic and uniform in frequency and amplitude. It never happens at 67 mph. It always happens at exactly 68 whether down hill or on the flat. I have experienced the eery feeling of hp balanced against the wind during top speed testing on my CBR250R. There is no cyclic surging. Only a random and natural interplay between the power and the wind. What I see happening with the PCX is definitely not like that. Too bad Honda didn't put a menu selection into the the screen to change the mileage into an occasional tach read out. Then we would know if I am at redline or not.
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Re: New PCX top speed???

Post by edscoot »

With 13,000 miles on the clock I don't get higher than 56-57mph top speed indicated (not gps, so probably slower - lorries overtake me now). This could be down to the belt getting near it's replacement at the 15k service.
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Re: New PCX top speed???

Post by gn2 »

Similar with mine, at 11000 miles its only doing 61mph indicated.
When new it did 67mph indicated.
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Re: New PCX top speed???

Post by you you »

edscoot wrote:With 13,000 miles on the clock I don't get higher than 56-57mph top speed indicated (not gps, so probably slower - lorries overtake me now). This could be down to the belt getting near it's replacement at the 15k service.
Pop a new belt and rollers in and I'll bet it'll be good as new
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Re: New PCX top speed???

Post by maddiedog »

The reason I think the ECU limits by speed is, it goes the same top speed on the centerstand at max throttle as it does under load.

It's entirely possible it's limited by RPM or another measure though -- I'm by no means a Honda engineer, just a backyard mechanic speculating.

My PCX has the same symptoms as gn2 and edscoot too, my top speed is down from 61 to 59mph. Something else must be coming into play here...
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Previously rides: 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
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Re: New PCX top speed???

Post by gn2 »

One wonders where the ECU and speedo get their information from...?
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Re: New PCX top speed???

Post by you you »

gn2 wrote:One wonders where the ECU and speedo get their information from...?

The Dail Mail :D
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Re: New PCX top speed???

Post by gn2 »

AKA The Daily Wail.
I much prefer the Daily Mash
http://www.thedailymash.co.uk/
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Re: New PCX top speed???

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gn2 wrote:AKA The Daily Wail.
I much prefer the Daily Mash
http://www.thedailymash.co.uk/
Or the Daily (hate)Mail
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Re: New PCX top speed???

Post by gn2 »

I remember a study which concluded that reading The Wail on a regular basis was likely to induce stress and/or depression.
Not the paper for me, I used to read The P&J.
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Re: New PCX top speed???

Post by you you »

That Dail Mash is class. Ive already forwarded the NHS story :D
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Re: New PCX top speed???

Post by gn2 »

There's some real crackers in it, the Agony Aunt column is usually hilarious.
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Re: New PCX top speed???

Post by TasmanianDevil »

maddiedog wrote:The reason I think the ECU limits by speed is, it goes the same top speed on the centerstand at max throttle as it does under load.

It's entirely possible it's limited by RPM or another measure though -- I'm by no means a Honda engineer, just a backyard mechanic speculating.

My PCX has the same symptoms as gn2 and edscoot too, my top speed is down from 61 to 59mph. Something else must be coming into play here...
My top speed is 76mph about 122kmh.

All the pcx i know do more than 100kmh...
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Re: New PCX top speed???

Post by TasmanianDevil »

maddiedog wrote:The reason I think the ECU limits by speed is, it goes the same top speed on the centerstand at max throttle as it does under load.

It's entirely possible it's limited by RPM or another measure though -- I'm by no means a Honda engineer, just a backyard mechanic speculating.

My PCX has the same symptoms as gn2 and edscoot too, my top speed is down from 61 to 59mph. Something else must be coming into play here...
My top speed is 76mph about 122kmh.

All the pcx i know do more than 100kmh...
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Re: New PCX top speed???

Post by Pcxdemon »

TasmanianDevil wrote:
maddiedog wrote:The reason I think the ECU limits by speed is, it goes the same top speed on the centerstand at max throttle as it does under load.

It's entirely possible it's limited by RPM or another measure though -- I'm by no means a Honda engineer, just a backyard mechanic speculating.

My PCX has the same symptoms as gn2 and edscoot too, my top speed is down from 61 to 59mph. Something else must be coming into play here...
My top speed is 76mph about 122kmh.

All the pcx i know do more than 100kmh...
Blasphemy!! You are going to start up the wrath of middle age dark times christianity priest who may burn you on the stake for claiming such things...Dont bother with which-craft video proof , thats just as bad and will not change their small mind ignorance thinking way. You will still buuuuurn... :lol: :lol: :lol: :lol:

But on the other subject,what have you done to yours to get it up there? :)

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Re: New PCX top speed???

Post by Taz »

Tasmanian devil where are you located? I get 106kmh indicated on my original 125.
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Re: New PCX top speed???

Post by TasmanianDevil »

Taz wrote:Tasmanian devil where are you located? I get 106kmh indicated on my original 125.
I'm on Portugal.

Once i reached 124kmh but it is hard to do.

I will make a vídeo for you. In Portugal there are many doing 75mph.
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Re: New PCX top speed???

Post by gn2 »

Pcxdemon wrote:which-craft video proof
You mean like a video where the speedo indicates 118kph which is proof of being able to do 127kph...?
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Re: New PCX top speed???

Post by Cooley_PCX_Rider »

Wheel bearings.......brakes.........tire size............

Many things on a scooter are not designed to run over a specified speed. You can hot rod anything you like
but perhaps your personal pilot should take this baby out on the roads and test it for you should your math
be off a bit.
LOL
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Re: New PCX top speed???

Post by sendler2112 »

TasmanianDevil wrote:My top speed is 76mph about 122kmh.

All the pcx i know do more than 100kmh...
Your speedo reads fast by 8%. Maybe 10%. What is the year and displacement of your PCX?
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