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Aprillia RS125.. The new 4 stroke?

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EUMP
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PostPosted: 22:29 - 03 Nov 2010    Post subject: Aprillia RS125.. The new 4 stroke? Reply with quote

'Designed to replace the old two-stroke RS125, the new four-stroke, 15bhp bike is currently being unveiled at the Milan Motorcycle Show.'

^ MCN, so Aprillia have murdered the whole fast catergory 125cc range? Even though it's set to have 15BHP?

https://www.motorcyclenews.com/upload/273850/images/aprilia-rs4-125.jpg
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Acemastr
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PostPosted: 22:46 - 03 Nov 2010    Post subject: Reply with quote

That would rule them out of the 125cc motogp, i highly doubt they'd do that
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pits
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PostPosted: 23:01 - 03 Nov 2010    Post subject: Reply with quote

EU emission regulations I believe has killed of 2 stroke Sad
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EUMP
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PostPosted: 23:05 - 03 Nov 2010    Post subject: Reply with quote

yeah that's what i think caused it pits, as they kept having issues with the emissions
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Myler
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PostPosted: 23:16 - 03 Nov 2010    Post subject: Reply with quote

not a proper rs125 unless its two stroke...
can't beat the smell of a 2-stroke Laughing

should make an aftershave 'two stroke skutch' Thumbs Up
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ms51ves3
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PostPosted: 23:20 - 03 Nov 2010    Post subject: Reply with quote

Gay!
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blurredman
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PostPosted: 23:25 - 03 Nov 2010    Post subject: Reply with quote

The EU and their bloody rules.
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Shaun
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PostPosted: 23:53 - 03 Nov 2010    Post subject: Reply with quote

First one to whack an old RS125 engine into the frame wins.
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Howling TerrorOutOfOffice
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PostPosted: 00:13 - 04 Nov 2010    Post subject: Reply with quote

Acemastr wrote:
That would rule them out of the 125cc motogp, i highly doubt they'd do that
Moto3 will replace the old 125 bikes. 250 4 strokes.

Pat
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Paulington
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PostPosted: 03:52 - 04 Nov 2010    Post subject: Reply with quote

To get a 2 stroke through emissions now you have to choke it to death to the point where it's not fun anymore.

It's a depressing day when even Aprilia have given up. Sad.
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Whosthedaddy
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PostPosted: 09:07 - 04 Nov 2010    Post subject: Reply with quote

ms51ves3 wrote:
Gay!


You think?

I must admit to having a secret lust for a go on one of the ols skool ones and they still look the best 125 out there, even with the chav following!
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Frost
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PostPosted: 09:51 - 04 Nov 2010    Post subject: Reply with quote

Acemastr wrote:
That would rule them out of the 125cc motogp, i highly doubt they'd do that


Why so? It's not a production based class so the race and road bikes share no common components.

I think 125 2 strokes have been on borrowed time for a while now. They make way more power than learners are allowed, derestricting them is easy and emissions laws are only ever going to get tighter.

A 4 stroke RS125 seems stupid to us as almost all of us would want the full power 2 stroke. But the truth is that most of them are ridden by people with no desire to fiddle with them or break the law, but such people don't usually end up on forums like this. Most of our new members seem to come here looking for ways to increase the performance of their bike, so over the next few years we can expect more of them to be disappointed to find out that just like those chinese bikes, the RS isn't derestrictable.

For most users i expect that the new RS will be easier to ride due to more low end power, easier to maintain and first time bike buyers won't need to worry so much about the dreaded rebuild.

Ultimately it's all just going to be extra motivation for people to get their tests done!
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pepperami
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PostPosted: 10:50 - 04 Nov 2010    Post subject: Reply with quote

Who-ever put up a restriction, people will find a way round it Smile
Nearly all/most/a lot of the newer leaner/small bikes now come with some form of limit in the electronics (CDI? rectifier? regulator?).
How long before there is a market for unrestricted CDI`s and the like to make your little four-stroke go faster?.

We will getting four-strokes and we are going to have to like it Sad
We just need to find ways round what is being impossed on us by EU/government bullies!
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Irn-Bru
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PostPosted: 11:59 - 04 Nov 2010    Post subject: Reply with quote

I think it's time to buy a 2 smoker and hide it in a garage while they're still cheap... then just start it up every now and then and sniff the exhaust fumes Shifty
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Acemastr
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PostPosted: 12:31 - 04 Nov 2010    Post subject: Reply with quote

pepperami wrote:
Who-ever put up a restriction, people will find a way round it Smile
Nearly all/most/a lot of the newer leaner/small bikes now come with some form of limit in the electronics (CDI? rectifier? regulator?).
How long before there is a market for unrestricted CDI`s and the like to make your little four-stroke go faster?.

We will getting four-strokes and we are going to have to like it Sad
We just need to find ways round what is being impossed on us by EU/government bullies!


There's nothing to derestrict on 4stroke 125's
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Kickstart
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PostPosted: 12:41 - 04 Nov 2010    Post subject: Reply with quote

pepperami wrote:

Nearly all/most/a lot of the newer leaner/small bikes now come with some form of limit in the electronics (CDI? rectifier? regulator?).
How long before there is a market for unrestricted CDI`s and the like to make your little four-stroke go faster?.


The reason the 2 strokes could be derestricted is most had there beginnings as full power 125s from before many countries had any power restrictions for learners. The UK mainland got lumbered with restricted 125s getting on for 30 years ago, but most other countries avoided it for another 15 years. As such there was plenty of market for 25hp+ 125s, and once they were built easy enough to strangle them for the UK.

With the 4 strokes they are being designed for the 11kW market. There is now no significant legitimate market for 25hp 125s so no point in going to the expense of designing and building a 125 that will produce more than 11kW.

I am sure that with some effort you can probably get the 125 4 strokes a bit above 11kW, but without significant tuning work (in which case you may as well bore it out to a larger capacity) I wouldn't expect much beyond 10% or so.

All the best

Keith
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pepperami
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PostPosted: 13:05 - 04 Nov 2010    Post subject: Reply with quote

Acemastr wrote:

There's nothing to derestrict on 4stroke 125's


But there are things you can do to improve performance!

For example= change the regulator/rectifier/CDI to increase your rev-range, giving you a slightly higher top speed?
What about gas-flowing the head to improve things?
What about bigger valves?
What about changing the cam/s?
Bigger or different carb/s?
Change the chip in the fuel-injection module?

Maybe there is something to derestrict on a four-stroke?
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Frost
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PostPosted: 13:14 - 04 Nov 2010    Post subject: Reply with quote

I suspect that either more powerful versions of some bikes / engines will be made for asian markets, though these may either be bolt on parts or electronic restrictions. I can also see the design of the engines changing little in future years, but the electronics and exhaust being updated to meet new emissions and noise regulations. So in future years there will certainly be something to derestrict on the 4 stroke 125's, though it won't result in a doubling of power, more likely just more mid range power
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Rogerborg
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PostPosted: 13:16 - 04 Nov 2010    Post subject: Reply with quote

The pending 3rd European Directive on Driving Licenses will kill off any remaining market for >11kW 125s, since there will be no equivalent of the "125 11kW then ride <25kW" restricted test.

To ride any 125 over 11kW, you'll instead have to sit an A2 test on a 400cc+ 25kw+ bike, and in practice this'll mean training and testing on a 600cc+, since I don't see training schools keeping 500ccs around just for A2.

Long story short, you'd have to be pretty dedicated to the 125 cause to pay for training and test on a 650 just so that you can ride a balls-out 125 on the road.
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pepperami
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PostPosted: 13:20 - 04 Nov 2010    Post subject: Reply with quote

DaFrostyOne wrote:
I suspect that either more powerful versions of some bikes / engines will be made for asian markets, though these may either be bolt on parts or electronic restrictions. I can also see the design of the engines changing little in future years, but the electronics and exhaust being updated to meet new emissions and noise regulations. So in future years there will certainly be something to derestrict on the 4 stroke 125's, though it won't result in a doubling of power, more likely just more mid range power


If it gives you an edge Thumbs Up Smile .
I`ll bet your bottom dollar, that as two-smokes become less and less availible, people will get better at tuning small four-strokes Smile Thumbs Up
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Kickstart
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PostPosted: 13:20 - 04 Nov 2010    Post subject: Reply with quote

pepperami wrote:
For example= change the regulator/rectifier/CDI to increase your rev-range, giving you a slightly higher top speed?


Regulator / rectifier have nothing to do with it. Cdi might increase the rev range but on its own that is useless without getting the torque to hang on longer

pepperami wrote:
What about gas-flowing the head to improve things?
What about bigger valves?
What about changing the cam/s?
Bigger or different carb/s?
Change the chip in the fuel-injection module?


Yes, you can do these but far from cheap and whether the gearbox or crank (for example) will take the extra is another question. To me they are tuning measures, rather just removing some minor restrictor.

All the best

Keith
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pepperami
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PostPosted: 13:48 - 04 Nov 2010    Post subject: Reply with quote

Kickstart wrote:

Yes, you can do these but far from cheap


All the best

Keith


You can already change the CDI on a modern CG for an after-market jobbie for approx £15 and that will increase your rev-range.

What I`m saying is it can be done and it`s not as expensive as you think, if you`re prepared to put some of the work in yourself.

Is putting on a bigger/better carb, tuning? or is it derestricting the engine?
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