Aprilia Riders

IZECUBEZ · March 15, 2009

I have most of the stuff u need

Edwin, got parts for top overhaul?

tknge · March 15, 2009

Due to our bikes utilizing the presence of a 2T pump that proportionately increases/decreases the flow of 2T into the engine as the speed of the engine increases/decreases (similar to a supercharger), technically there shouldn't be a reason for the piston to jam if you 'SUDDENLYY CLOSEE TRRHROTTLESZXZ '

Also as stated in this thread

http://www.singaporebikes.com/forums/showthread.php?t=186392

'2T pump works on a mechanical aspect:
Driven by the rotations of the engine : RPM
When the engine accelerate or decelerate, this reduction gear feed 2T accordingly with the RPM, smaller flow at low revs and more flow at higher revs.

Hi Vipergod2000, luster or anyone....

RS125 2t pump do not work similar like kawa or yama....

Our 2T pump feed rate still control by our throttle position, not by engine speed. U can open your 2T control compartment at your left engine case to see how it works. It still can be adjust its feed rate to your own liking. That why RS125 tends to cease or seize if you do not do it at the correct way.

xxes123 · March 15, 2009

Edwin, got parts for top overhaul?

I only got 1 extra new block

IZECUBEZ · March 15, 2009

I only got 1 extra new block

That's all? What else you have in your storeroom of goodies?

PM me if you feel uncomfortable stating things here.

xxes123 · March 15, 2009

That's all? What else you have in your storeroom of goodies?
PM me if you feel uncomfortable stating things here.

piston , o-ring are easily obtainable so i dun keep any spare . furthermore nobody wan 2nd hand piston etc , i dun keep any spare.

IZECUBEZ · March 15, 2009

piston , o-ring are easily obtainable so i dun keep any spare . furthermore nobody wan 2nd hand piston etc , i dun keep any spare.

Tow kay, I meant in general..

WawanAprilia · March 15, 2009

i suggest u do top end overhaul ..

quikslvr · March 15, 2009

I only got 1 extra new block

is the block mine?? i will pay u when my training end next month.not 1 shot but half2

xxes123 · March 15, 2009

is the block mine?? i will pay u once my training end next month

nope nope .. urs is under reserved .. this an additional 1

quikslvr · March 15, 2009

nope nope .. urs is under reserved .. this an additional 1

haha ok

Luster · March 15, 2009

Hi Vipergod2000, luster or anyone....

RS125 2t pump do not work similar like kawa or yama....
Our 2T pump feed rate still control by our throttle position, not by engine speed. U can open your 2T control compartment at your left engine case to see how it works. It still can be adjust its feed rate to your own liking. That why RS125 tends to cease or seize if you do not do it at the correct way.

i know abt this. yet the point is.................................................................................................................................................................................

i was stressing abt CLOSE THROTTLE FAST ON HIGH SPEED.

and 2T.

watever it is.. i'm 100% sure, even abit left over of 2T still in the piston. ANY 2-stroke bike wont seize or jammed.

thats y its sumhow sumway call 2T is a "lubricant"

lets make it short and simple.

Piston seize,cease,fly,come out from tank etc due to.....................

RUNS out of 2T

OR

bike is "unhealthy"

faulty here and there.

OR

IF anyone dumb enough to on high speed, prolong engine braking w/o blip (who the hell wanna use engine braking on high speed like 1 - 2mins)

OR

dumb enough *kanchiong* on high speed, eg: 150 - 200000000000km/h clutch in drop gear "to so call make the bike go slower". clutch out

peace

beer anyone ?

Edited March 15, 2009 by Luster

cms · March 15, 2009

i know abt this. yet the point is.................................................................................................................................................................................
i was stressing abt CLOSE THROTTLE FAST ON HIGH SPEED.
and 2T.

watever it is.. i'm 100% sure, even abit left over of 2T still in the piston. ANY 2-stroke bike wont seize or jammed.
thats y its sumhow sumway call 2T is a "lubricant"

lets make it short and simple.
Piston seize,cease,fly,come out from tank etc due to.....................

RUNS out of 2T
OR
bike is "unhealthy"
faulty here and there.
OR
IF anyone dumb enough to on high speed, prolong engine braking w/o blip (who the hell wanna use engine braking on high speed like 1 - 2mins)
OR
dumb enough *kanchiong* on high speed, eg: 150 - 200000000000km/h clutch in drop gear "to so call make the bike go slower". clutch out

peace

beer anyone ?

I never you know. I scared piston fly up and hit my face

Luster · March 15, 2009

I never you know. I scared piston fly up and hit my face

u no need to worry, u wear ff helmet bah.. unless u wearing hf.. LOL!

YoShiKi1605198827 · March 15, 2009

i know abt this. yet the point is.................................................................................................................................................................................
i was stressing abt CLOSE THROTTLE FAST ON HIGH SPEED.
and 2T.

watever it is.. i'm 100% sure, even abit left over of 2T still in the piston. ANY 2-stroke bike wont seize or jammed.
thats y its sumhow sumway call 2T is a "lubricant"

lets make it short and simple.
Piston seize,cease,fly,come out from tank etc due to.....................

RUNS out of 2T
OR
bike is "unhealthy"
faulty here and there.
OR
IF anyone dumb enough to on high speed, prolong engine braking w/o blip (who the hell wanna use engine braking on high speed like 1 - 2mins)
OR
dumb enough *kanchiong* on high speed, eg: 150 - 200000000000km/h clutch in drop gear "to so call make the bike go slower". clutch out

peace

beer anyone ?

As understand from ur stressing on closing throttle on high speed, I believe neither tknge nor xxes123 stated that by doing that will cause a healthy working engine to piston seize straight away.

What they r trying to explain is it might lead to possible future engine failure due to premature wear cause by doing it eg: piston seize, piston ring loose, gear balancer break, conrod bearing fracture etc. it might not happen now, straight away or in any lifetime before of ur overhaul period (if u r lucky) that doesn't mean it won't happen, until a point where the bike's wear limit is reach by frequent doing so, the engine will also give up.

As understand from some seniors that have experience with riding or racing on 2 stroke engine is that either they never fully close the throttle when slowing down and brake at the same time or they will half clutch hold rpm when they r trying to gear down entering a corner.

Hope it answer most of ur questions bro.

Cheers.

Edited March 15, 2009 by ~YoShiKi~

Luster · March 15, 2009

As understand from ur stressing on closing throttle on high speed, I believe neither tknge nor xxes123 stated that by doing that will cause a health working engine to piston seize straight away.

What they r trying to explain is it might lead to possible future engine failure due to premature wear cause by doing it eg: piston seize, piston ring loose, gear balancer break, conrod bearing fracture etc. it might not happen now, straight away or in any lifetime before of ur overhaul period (if u r lucky) that doesn't mean it won't happen, until a point where the bike's wear limit is reach by frequent doing so, the engine will also give up.

As understand from some senior that have experience with riding or racing on 2 stroke engine is that either they never fully close the throttle when slowing down and brake at the same time or they will half clutch hold rpm when they r trying to gear down entering a corner.

Hope it answer most of ur questions bro.

Cheers.

:faint::faint::faint::faint:

i understand and really understood wat u and tknge...xxes123 are saying..

seriously.

yes, bike will give way if u somehow or rather didnt go to the "clinic" for regular check up.

cornering, theres so many ways, drop gear b4 entering bend.... late brake 2 finger,blip with another 2 finger... sum even half throttle while changing gear.. etc

talking abt...............

the thing is.. is there any diff between close fast and slowing close ? *straight road*

Edited March 15, 2009 by Luster

YoShiKi1605198827 · March 15, 2009

:faint::faint::faint::faint:

i understand and really understood wat u and tknge...xxes123 are saying..
seriously.

yes, bike will give way if u somehow or rather did go to the "clinic" for regular check up.

cornering, theres so many ways, drop gear b4 entering bend.... late brake 2 finger,blip with another 2 finger... sum even half throttle while changing gear.. etc

talking abt...............

the thing is.. is there any diff between close fast and slowing close ? *straight road*

Is there any differents in reducing fuel slowly or one shot cut the fuel to the minimal is what u should be asking . . . the differents is slowly reducing ur fuel gives u a more gradual smoother engine break where one shot cut the fuel to the minimal might give jerking or knocking motion (irregular piston movement) if ur idle circult is too small . . . be it straight road or bend.

When changing gear I believe no one will completely close the throttle.

Cheers

Edited March 15, 2009 by ~YoShiKi~

insaint · March 16, 2009

No wack > no problem

Got wack > got problem

kekeke

Luster · March 16, 2009

Is there any differents in reducing fuel slowly or one shot cut the fuel to the minimal is what u should be asking . . . the differents is slowly reducing ur fuel gives u a more gradual smoother engine break where one shot cut the fuel to the minimal might give jerking or knocking motion (irregular piston movement) if ur idle circult is too small . . . be it straight road or bend.

When changing gear I believe no one will completely close the throttle.

Cheers

ok this explain everything.

"motion (irregular piston movement) if ur idle circult is too small"

blast3dGaL · March 16, 2009

No wack > no problem
Got wack > got problem

kekeke

so moral of the story? dun buy aprilia... hee..

tknge · March 16, 2009

I called Chong Aik and told Alpha 10 tire stock just came in.

If anyone keen to have a GB, pls leave you detail as below. Once I gather some no. I will go to Ah Boy to negotiate for better pricing. As for installation, I will check out too.

1. tknge / F110 R140 / 2 sets / 97738966

sky 1605199488 · March 16, 2009

First-Ever Cross Threads Outing

Introduction:

It had always been a practice in sbf for each thread to organise their own outings and gatherings.

And it hit upon me that instead of keeping to one thread/one make of bike, why not widen our circles and meet riders of similar interest?

As a first attempt to organise a cross-threads outing, we are inviting riders of all make, types, classes of bikes, with the link posted in krr150, nsr150sp/rr, tzm150, cbr150, babymitto, rs125, r125, nsr250, rs250, babyblade, rvf400, gsxr400, zx4, m2b threads; covering most 2b/a sportsbikes.

Main objective of this gathering/outing is for riders of different threads to meet each other, widening friendships, and have fun! =)

Althought link is posted only in above mentioned threads, feel free to invite friends who are riding other bikes as well.

Once again emphasizing this is an open-to-all-bikes event.

Event:

Event: Cross-Threads Outing

Date: 18th April 2009

Time: 2200 HRS onwards

Venue: TBA

Duration: 2-4 Hours (free to go/join at any point of time)

Destinations:

From past experiences, we decided to keep exact locations unknown to all first.

Activities would be late dinner/supper, followed by riding to a nice scenic popular hangout for couples, before punching card at that well know place for engines.

It will be on a saturday's night, and we will be expecting quite a big turn-up. Thus all hot-spots would be avoided, in our routes and destinations. Time on hot-roads will be minimized. Special parking place will be allocated. To minimize risk, card-punching would be the last destination; as late as possible.

INTERESTED PARTIES KINDLY ADD NAME INTO LIST HERE

REFER TO THREAD FOR MORE INFORMATION

lacrimosae · March 16, 2009

Premix is safer because the rate at which 2T is fed into your engine is consistent to the amount of petrol used for the combustion.

It all boils down to personal preference. Do you prefer a high risk of seizure or a low risk of seizure? That's all.

I personally do not favour additional mechanical complications. If you have 4 additional moving parts with the 2T pump, that's 4 extra points of possible failure. Premixing 2T with petrol cuts this risk out of the equation.

Also, the 2T pump is a very crude device to introduce lubricant into the mixture. The amount of 2T fed into the engine is a really rough approximation at best. There are no markings on the rocker valve as the volume and rate of 2T is also determined by the engine RPM as well as the position of the rocker valve relative to the throttle position.

There is no specification table in any manuals for the RS125 (User's Manual, Workshop Manual, Servicing Manual, even the most comprehensive and recognised Hane's Manual). Hmmm, wonder why? Because it is the only part of the bike which is an unknown, even to the engineers.

How do you meter the exact amount of 2T required? Estimation isn't exactly science, you know.

The word seizure also means:

1. to take hold of suddenly or forcibly; grasp

2. to capture; take into custody.

3. to bind or fasten together

During braking, I never have the clutch engaged. I always disengage the clutch completely when braking. It removes your dependency on engine braking, thus also reducing your chances of seizure.

When downshifting, I blip the throttle to keep the revs up. Practice this so it becomes second nature and you do it subconsciously, like disengaging during braking.

Oi slacker. U get my sms yesterday?

Btw guys, my bike has been vibrating alot while @ 6k rpm +/-.. Any ideas why?

Might be broken balancers, or wheel bearings.

Loose conrod will cause a whirring sound when revving.

.....

If the temperature is maintained (due to several things such as coolant, spark plug grade (8 - hot, 9 - alright, 10 - cool), ambient temperature, Octane level of fuel) - All factors preventing pre-ignition (also known as 'Knocking' for Forced Induction Car lovers, and THEIR biggest fear) , which can cause the piston seizeCEASE argh.

Temperature is regulated by the coolant and more importantly, the A/F mixture. Having too little petrol (lean), cylinder and piston heat up, causing seizure. Having too much petrol (rich), excess carbon build up causing fouling of spark plug, and caking of carbon deposits on valve.

For the millionth time, more 2T means more LEAN, not rich. Especially for bikes with injector 2T (2T pump), increasing 2T input by premixing on top of using the 2T pump introduces too much 2T into the mix, and this 2T takes the place of petrol, which causes leanness (excess air relative to the amt of fuel).

As heroically proven by Subzero on track when he added 2T into his tank while still using his 2T pump, his spark plug melted and it was WHITE. Clearly, the mixture was too lean. (white=lean; light brown=perfect; black=rich)

I have had to ride my bike without coolant (blown head gasket), so I pulled over by the road, upped the idle and main jets, and rode home on the PIE from Tuas (I live near Potong Pasir). The temperature remained below 97deg C at the highest point. I'm not recommending you convert your bikes to being aircooled, I'm just concurring with Edwin that petrol is a coolant.

Luster, vipergod2000, tknge, thanks for contributing. All good reads!

Meet up for kopi on 19 March anyone?

Edited March 16, 2009 by lacrimosae

seraphx · March 16, 2009

Premix is safer because the rate at which 2T is fed into your engine is consistent to the amount of petrol used for the combustion.

It all boils down to personal preference. Do you prefer a high risk of seizure or a low risk of seizure? That's all.

I personally do not favour additional mechanical complications. If you have 4 additional moving parts with the 2T pump, that's 4 extra points of possible failure. Premixing 2T with petrol cuts this risk out of the equation.

Also, the 2T pump is a very crude device to introduce lubricant into the mixture. The amount of 2T fed into the engine is a really rough approximation at best. There are no markings on the rocker valve as the volume and rate of 2T is also determined by the engine RPM as well as the position of the rocker valve relative to the throttle position.

There is no specification table in any manuals for the RS125 (User's Manual, Workshop Manual, Servicing Manual, even the most comprehensive and recognised Hane's Manual). Hmmm, wonder why? Because it is the only part of the bike which is an unknown, even to the engineers.

How do you meter the exact amount of 2T required? Estimation isn't exactly science, you know.

The word seizure also means:
1. to take hold of suddenly or forcibly; grasp
2. to capture; take into custody.
3. to bind or fasten together

During braking, I never have the clutch engaged. I always disengage the clutch completely when braking. It removes your dependency on engine braking, thus also reducing your chances of seizure.

When downshifting, I blip the throttle to keep the revs up. Practice this so it becomes second nature and you do it subconsciously, like disengaging during braking.

Might be broken balancers, or wheel bearings.

Loose conrod will cause a whirring sound when revving.

Temperature is regulated by the coolant and more importantly, the A/F mixture. Having too little petrol (lean), cylinder and piston heat up, causing seizure. Having too much petrol (rich), excess carbon build up causing fouling of spark plug, and caking of carbon deposits on valve.

For the millionth time, more 2T means more LEAN, not rich. Especially for bikes with injector 2T (2T pump), increasing 2T input by premixing on top of using the 2T pump introduces too much 2T into the mix, and this 2T takes the place of petrol, which causes leanness (excess air relative to the amt of fuel).

As heroically proven by Subzero on track when he added 2T into his tank while still using his 2T pump, his spark plug melted and it was WHITE. Clearly, the mixture was too lean. (white=lean; light brown=perfect; black=rich)

I have had to ride my bike without coolant (blown head gasket), so I pulled over by the road, upped the idle and main jets, and rode home on the PIE from Tuas (I live near Potong Pasir). The temperature remained below 97deg C at the highest point. I'm not recommending you convert your bikes to being aircooled, I'm just concurring with Edwin that petrol is a coolant.

Luster, vipergod2000, tknge, thanks for contributing. All good reads!

Meet up for kopi on 19 March anyone?

I'll check my schedule on the 19th and confirm with you on your cellphone.

=)

IZECUBEZ · March 16, 2009

Might be broken balancers, or wheel bearings.

Loose conrod will cause a whirring sound when revving.

Meet up for kopi on 19 March anyone?

Thx for the info. For a couple of days already, i'm unable to go above 6k rpm and 80kpmh. Its getting worse from the time I posted that question. I'm just waiting for my salary to come in to do a top overhaul.. Sad right?

I dun mind meeting up on 19th But it'll be after 6.30pm due to work.

macan_putih · March 16, 2009

whos looking for e original end can

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