help needed i need to know how you tell if the bike in question is the full power version as im a little confused wit alot of the write ups on these machines they say they are learner legal but if its the full power version you must have passed your test first is this correct how do i tell plz help as im looking in to getting one and dont want to get knicked as i dont hold a fill bike licence yet caitlin
THe RS can produce in full power upto about 30 bhp so technically it wouldnt be learner legal.
Unless its a fairly new one then it will be producing around 12 bhp if its restricted (one way to tell is that it will top out around 70 mph - a full power one will do over 100mph)
Officially yes - you would need to pass a test to be able to ride a full power version, whether most people would realise its full power if you were on it with L Plates is another matter.
The full power version will probably have less low down grunt than a restricted one though.
As for how they are restricted - I don't know sorry.
Yamaha TZR125 was restricted by not having the power valve working abd set to "low tune" direction
Honda NS125R was more with the electronics
Some do it through the exhaust as well, or you need a kit to convert them to full power.
You should be able to locate all the info you need in there
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CDI Derestriction
The Aprilia RS125 comes with a CDI restriction. It retards ignition
around 6000rpm so the bike can pass EU emission tests so they can be
manufactured. This makes your bike perform very poor at 6000rpm and does
not let the engine pull. Derestricting this will invalidate your
warranty. If you bike is in warranty the best thing to do is buy another
CDI and derestrict this and use it on your bike.
Derestricting the CDI?The CDI is a black
box under the passenger seat. Therefore to get to it you will need to
remove the tail of the bike. The easiest way to do this is to remove the
rear side fairings with the tail. See the manual for more details.
The CDI will have a serial number on it? if the serial number is in the
following format 071000-XXXX-XXXXX then this derestriction will work if
done correctly (may still work on others).
You will need to cut out a hole in the CDI to reach the bridge. Cut out a rectangle 30mm by 10mm and 5-10mm deep.
http://flexiweb.atspace.com/rs125/1.jpg
You will see a part of a circuit board, snap this. This is known as the
bridge. (If you reach glass it means you have dug too far!)
Once you have snapped the bridge, fill your hole back in with silicone,
make sure its waterproof! Now there will be no environmental dip between
5000-6000rpm.
Here is a detailed diagram...
http://www.angelfire...di-instruct.jpg
Full Power Derestriction
The Aprilia RS125 can be restricted so its learner legal, and then derestricted to full power (claimed 33bhp). To do this you will need the following items:
o RAVE controller
o Powervalve blade
o Solenoid
o Cable
If your RS125 is restricted then it will not get a significant power
increase around 8000rpm. If you know the powervalve is installed but you
are still not getting this increase ensure all parts are working
correctly, connected, and the solenoid is set correctly.
What does the powervalve do?
The blade of powervalve goes in the barrel of the engine. This then
moves up and down to increase and decrease the exhaust outlet size to
give you different performances at different rev ranges. The more revs
you give the bike the more the powervalve blade is pulled by the
solenoid and opens the exhaust outlet.
All a solenoid is, is an electromagnetic componet. Bbasically all you
need to know is it pulls a cable which is connected to the powervalve
blade to pull it out to increase the gap in the exhaust outlet.
You must check your bike for the componets listed above.
Your bike may be restricted via a blanking plate.
You can see this by removing your right side fairing and looking above
the exhaust. It will be a small plate and have 3 bolts along it (one
either side and one in the middle). If you see a blanking plate then you
will need to purchase the powervalve blade, mount, and other parts see
parts diagram below... Your probably best getting a gasket for it too
even though there is one on the blanking plate... you can reuse them but
to ensure the bike performs well and you dont get any problems get a
new one...
http://flexiweb.atspace.com/rs125/2.jpg
Once you have aquired these parts remove your blanking plate and fit the powervalve into the bike.
Note, the powervalve goes in one way!
It has a tapered end on one side, this should face downwards, and the
flat side of the powervalve blade should face upwards! Ensure you do
this!
http://flexiweb.atspace.com/rs125/3.jpg
If you can see the powervalve mount sticking out the exhaust then you
will not need to purchase it of course and you will see something like
this above the exhaust...
http://flexiweb.atspace.com/rs125/4.jpg
Remove your tank...
To the right of the battery there should be a solenoid which should have
a cable connected on the end of it. The cable connects to the
powervalve blade that goes into the engine that we looked at before.
It should look something like this altogether...
http://flexiweb.atspace.com/rs125/5.jpg
If you do not see the solenoid and/or cable then you will need to purchase these.
Once you have purchase these parts mount them to the right of the
battery, there is a place for it to be fitted, it goes on the part of
the radiator frame that goes right next to the battery.
If you see the solenoid and cable, and you see the powervalve mounted in
the engine but your bike is not performing as it should... then it may
be a case that the solenoid is not connected! If you look on the picture
above there is a connector block on the end of the solenoid, see if
this is connected, it connects to the main loom which runs along the
right hand side of the bike from the front all the way to the back of
the bike.
If you connect it up and it does nothing then keep reading....
Remove the passenger seat and check for the RAVE unit. (just remove the two back side fairings and tail)
http://flexiweb.atspace.com/rs125/6.jpg
If you cannot see this, then you will need to buy one of these and fit
it to your bike. There will be a spare connector block coming out of the
main loom were it should be connected to. Once you have fitted all
these parts your bike should be derestricted!!!
All you need to do now is to set your solenoid up correctly... It has
adjuster nuts on it, so the cable can be adjusted. This is because the
solenoid starts acting around 3000rpm (you can see the solenoid opening
when you rev the bike to this with the tank off). The more the
powervalve blade sits in the exhuast the better low range power you will
have, but poor top end. This works vise versa. See how to adjust your
solenoid below...
http://www.125ccsportsbikes.com/forums/uploads//post-9-1093176496.jpg
WARNING: WHEN YOU DERESTRICT YOUR BIKE YOU WILL NEED TO CHANGE YOUR SPARK PLUG OTHERWISE YOU WILL BLOW A HOLE IN YOUR PISTON.
Despite what the manual says, the spark plug to use when your bike is
full power (powervalve installed) is a BR10EG. This is because the plug
is colder. When your bike is restricted you should run a BR8EG. You can
change these plugs for other versions e.g. Denso plugs, Iridium plugs
for smoother running.
Exhuast Derestriction
The later bikes 2003 onwards have a CAT in the expansion chamber. In the
expansion chamber not the end can. To get rid of this CAT which makes
your bike perform differently, get an after market expansion chamber
(best buying the end can with it) or buy an earlier expasion chamber
from an RS125 or take the expansion chamber off and be prepared to cut
it open, remove the CAT and weld it back together.
If you are going to buy a different expasion chamber then you will have
to rejet your carb. The bikes with a CAT in them are set to run rich
(more oil) because the CAT requires the bike to run like this. Therefore
you will need to buy a standard main jet for your carb. If you have a
28mm carb (finally got it right I normally say 26mm) then your standard
main jet size is a 120. If your carb is a 34mm your main jet is more
likely to be a 158(i think) You can get these for a couple of quid. This
means taking your carb off and removing the old main jet, and replacing
it with a new one.
The racers tend to use the standard expasion chamber because it is
thicker then aftermarket ones therefore contains the heat more, and
these work better with more heat. They normally just change the end can.
Removing your CAT (if your being a big man)
You will need to take your expasion chamber off the bike (see manual if you dont know how)
You need to cut your expansion chamber open where this fella is cutting
it and where the white line is
indicated...http://flexiweb.atspace.com/rs125/7.jpg
Once you have done this you will be able to remove the CAT
http://flexiweb.atspace.com/rs125/8.jpg
Thats it really, dont know too much about it because I havent done it...
Just weld your expasion chamber back up with the CAT removed, give it a
respay (heat resistant of course) because they tend to rust like hell
even if you dont ride your bike in the wet.
http://flexiweb.atspace.com/rs125/10.jpg
The expasion chamber doesnt really have anything in it anyway if your
thinking this was too simple. Literally just cut it open, remove the CAT
and weld it back together.
Some exhausts also have a recirculation tube that goes to the air box.
You just have to cut this off and weld it up and seal up the air box.
The snorkel in the air box can be taken out too, this will let some more
air in slightly and make your bike sound a lot better. Just pull the
rubber out the top, or you can cut the part that sticks out. This
shouldnt affect your jetting since the bike is not jetted correctly from
standard anyways. If you want to be sure stick a bigger main jet in
(121 on a 28mm carb). Do a plug chop to confirm. To do a plug chop see
the pinned topics... under useful RS125 information.
Carbouretter
The older bikes had a 34mm carb on. The new ones have a 28mm carb. I
think it was the 98's that had the 34mm carb on then after that unless
modified it was a 28mm carb. If you want better mid range power, and a
better top end without affecting your petrol consumption too much get a
34mm carb. The petrol consumption is suprisingly good, it does guzzle
more but you get that back in power!
All you have to do is get hold of a Deloroto VHSB 34MM and a new inlet
manifold because the original will be to small and then fit it onto your
bike. The standard air filter will still fit this new carb.
Well thats basically it. Your bike is derestricted...
Mods to follow to make your bike faster and all round better performance...
.
so its not that noticable to the naked eye that its been de-restricted but on the other hand is it worth the risk with my tracj recorde of passing my test it might be lol
caitlien
Personally I don't think it is worth the risk.
If you were involved in an accident and the insurane company find out the bike is the full power version. They will not pay out. This could result in personal financial liabilties as well as points on your licence.
If there is confusion as to whether the bike you are looking for is restricted or not, but from a dealer and check the logbook for power rating. Kw or BHP. Then get the dealer to cerify that if it is a used bike.
Just to add that the RS may not be the easiest bike to pass a test on - I know its a 125 but its still pretty much a race rep (and I have a soft spot for little strokers anyway - no innuendo intended lol).
turning circle and high saddle would make it awkward for low speed manoevures such as U turn - not having a go at your ability though - I had an NSR125 when I was getting ready for my test - although the CDI unit failed and I had to take it on a Suzuki 100 but was damn easy to ride compared to the Honda.
Good luck with the test when its comes up though :-)
I'll go along with that.
I can see the appeal of the Aprillia, a great looking bike, but taking your test on an easy bike has got to be best. When you have past your test you will be itching to get something bigger. Get something like a Honda CG125. I bought one for practicing and the test and sold it a year later for the same money. OK CG 125 or similar is not practically sexy, but who cares once you have your licence. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
As said before take your test on a bike that is easy to ride and then half your test is passed as for the aprillia it uncomfortable and not a good bike for a learner with the insurance cost pass then look at a sports bike sv650 are good start point and one not to high on insurance restricted will sit at 80 all day if your back can take it
thanks guys for your reply s point taken on the stupidity of riding a full power version when not actually being aloud to by law i wont be doing that. thanks again for all your info and happy biking caitlin x
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