Why is my ped only doing 40mph?

[Kizza]

I recently had my Peugeot Speedfight 07 model scooter de-restricted and a leo vince tt race pipe put on. The bloke said it would reach speeds of 50 - 55 but dissapointingly it only goes 40 on the flat The rollers that came with the exhaust are 6.7 grams, and these are installed on the bike. I weigh 11 stone. But my mates are going at least 50 and some of them only have race exhausts. Down hil it almost reaches 50, So i presume it is not the CDI that is stopping it at 40mph. Has anyone got any sugestions To how to improve speed or why it is only going 40mph

Thanks in Advance
Kizza

[asdf]

Im not sure if there is a variator restriction on speedfights but if there is it is a washer in the middle of the variator which stops the two halfs coming completley together. This can effect the top end quite a bit.

https://www.scootnfast.com/images/derestrict04.jpg

If there is one it should look something like that.

[Devans]

There are numerous reasons why, even though you have a racing pipe, has it had the restricter removed from it, it's in the top of the manifold?

it won't have a resonator tube on it anymore so that's fine.

Also the CDI won't stop the scooter from speeding up, when your going down hill, because it's half coasting. that's £18 to get done.

The washer in the variator as mentioned above needs removing.

With a new exaust and rollers you need to get the carb re-jetted i think, but don't quote me on that

Can't think of anymore, it should do 50mph with all that done tbh.

[matt_uk]

Because its a ped...
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- - - BIKE - - - Passed CBT : 21/07/06 - - - Currently : Riding a 2001 Aprilia rs125 (SOLD)
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[druidsam]

[ms51ves3]

[southeastpete]

beat me to it matt...

[Kizza]

The washer was took out when de-restricted and also the exhaust is de-restricted, A bloke mentioned the rollers are too light??

[Devans]

Nope those 6.7 is quite heavy, any heavier an acceleration will suffer.

Something hasn't been de-restricted, my ludix 50cc ped does 45mph with only a de-restricted exhaust, so something isn't right on yours matey.

i'm 11stone aswell so weight isn't the issue.

How old is your Speedfight?

My mate had an 07 so i'll ask him, if yours is the same age?
Because his had a Rev limiter/CDI on it or something, i can't remember exactly what though.

Get back to me with what year it is an i'll find out exactly what restrictors you've got in yours.

[The Artist]

i see matt_uk and southeastpete had the same idea as me

[Andy levitt]

Have you taken the plate out of the variator? As my speedfight got just over 40 with that taken out and a standard restricted exhaust. I got about 50 mph with a viper exhaust and derestricted variator. your exhaust and rollers should be fin. It must be that the plate is still in. Have a word with that mechanic or better yet just whoop it out yourself. Although youll need an impact wrench costs about £15-£25 methinks. PM if you decide to do it yourself and ill give you specific instructions.
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Speedfight 50 -> Honda NSR 125 -> Y reg YAMAHA YZF R6 -> 08 YAMAHA YZF R6 -> Honda CBR1000RR
Theory test Done 4/6/07
Practical test Done 21/12/07

[ms51ves3]

[ms51ves3]

[Polarbear]

I'm going to derestrict my daugters Gilera DNA. The only thing I'm not sure about is what the rollers do and how the different weights affect the bike.

Can someone explain why I should change them.
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Triumph Trophy Launch Edition

[Devans]

The rollers effect the topspeed/acceleration of a scooter.

Here's a link which will exsplain it all

https://www.teamcalamari.com/zuma/variator.html

[cestrian]

Note....

Motors with standard carburation are set up at the factory. If you change to an aftermarket exhaust or derestrict a standard exhaust, you will affect the carburation (fuel/air mix), the motor will be running 'lean' and will therefore run hotter than it should. It will probably suffer some power loss and at worst, sieze entirely.
You need to adjust the fuel/air mixture to get best performance and reliability.

[Kizza]

I know for a fact the exhaust has been de-restricted as the mechanic gave me the cone shape restrictor thing and the old rollers, and the washer from the variator in a polythene bag. As for the year of the ped it is an 07, Rally Victories Edition. Today i went out and bought a size 58 carb jet and malossi 8 gram rollers, I was advised on the bigger jet and the rollers from 6.7 to 8 gram will improve top speed significantly?? Cheers for all the replies guys

[Kizza]

I know for a fact the exhaust has been de-restricted as the mechanic gave me the cone shape restrictor thing and the old rollers, and the washer from the variator in a polythene bag. As for the year of the ped it is an 07, Rally Victories Edition. Today i went out and bought a size 58 carb jet and malossi 8 gram rollers, I was advised on the bigger jet and the rollers from 6.7 to 8 gram will improve top speed significantly?? Cheers for all the replies guys

[Damon]

[frantic_2003]

maybe because its a ped?
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[ms51ves3]

[Kizza]

Calling to Ped experts out there. Could the increase in the weight of rollers increase top end speed? From 6.7 gram rollers with shit hot acceleration then stops at 40mph, with 8 gram rollers what are the speeds i am likely to reach? Cheers

[Kizza]

Calling to Ped experts out there. Could the increase in the wight of rollers increase top end speed? From 6.7 gram rollers with shit hot acceleration then stops at 40mph, with 8 gram rollers what are the speeds i am likely to reach?

[AppleJoe]

Stop double posting to bump your thread
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Full licence from 16/4/08
Previously: '56 YBR125 - Current: K1 SV650S

[Kizza]

I fucking dint!! get fucked applejoe u wanker, I dont know why it did it n it triple posted not doubled u fucking idiot