Aprilia Riders

dDtim · March 21, 2011

Oh yes, I just recalled that I didn't pay my share for the food we ordered. One round of drinks on me next meetup!

DarKz · March 21, 2011

Hi darkz, it's better if you actually join in as you would miss quite a few details without using the sense of touch.

I will try but I think it's full already since xczxczxcz, Feelicks & you are going?

thanks guys,
i was hoping that cos im "older" relatively spaking, my insurance wont be so high.
i didnt know no other insurance firm besides NTUC underwrites Aprilia. that sucks

I paid few hundreds more than that for comprehensive coverage, probably one of the highest among 2b-ers.

Oh yes, I just recalled that I didn't pay my share for the food we ordered. One round of drinks on me next meetup!

Same here, I wanted to ask for the share but I left earlier yesterday.

Edited March 21, 2011 by DarKz

dDtim · March 21, 2011

I will try but I think it's full already since xczxczxcz, Feelicks & you are going?

I'll be dropping by at best, just for dinner, if you guys have plans for so, if not I'll probably be fixing up my bike at home first.

AEoM · March 21, 2011

Hey tim I believe ah Seng has the 135 main jet. I got mine from there.

DarKz · March 21, 2011

I'll be dropping by at best, just for dinner, if you guys have plans for so, if not I'll probably be fixing up my bike at home first.

Oh okay, in that case I shall join in for the DIY.

Edit: My bike has problem starting up again. So I am afraid I will give the DIY a miss. Unless I can get it fix by Sat morning, I shall head down.

Edited March 22, 2011 by DarKz
Update

lacrimosae · March 21, 2011

Hey Tim,

I doubt I helped much, I was just walking around trying to get myself dry.

In any case, if you're looking for a really smooth throttle, just go PREMIX! Simple mechanical reason. Your throttle pulls both the throttle cable and 2T cable. But removing the 2T cable while going premix, you just pull on one cable, thus the easier pull and illusion that the bike is faster. Personally, I'd go premix too if I didnt have such a heavy mileage to run. I hate the thought of topping up the 2T every 2 days when i pump petrol!

Also, i recommend you give WEDA a call before you head down. Last I checked there were no 132, and 135 main jets.

The water cooling system is something advertised by Teck Thye. Personally I've not tried it, but i dont think it's a necessary mod. Our RS125 arent that hot, unless you're running a Polini. And it just adds extra weight to the bike, and draws more battery power. I think it's about 200plus.

Viknesh THE BOSS, you underestimate the importance of the floor supervisor walking around acting busy+concerned and its impact on the morale of the factory staff.

As for the electrical water pump, yes, unnecessary mod. Draws a lot of power from your battery and it runs even before your engine starts. I installed it because being me, ITCHY BACKSIDE, anything new and novel, MUST TRY!

I think you guys need to establish a baseline setting for your bike before trying these K&N filters. What works on one bike, might not neccessarily work on all bikes!

To me, I just feel you either run an empty airbox or slap on a K&N pod filter. Doing something in between doesnt mean you get the best of both worlds. While the pod filter is not that easy to tune, it is very very possible.

Using Sharul, and Eddy's bike as a benchmark, you cant go wrong. Their bikes are pumping out power all the way from the low end to the top, and they're using the K&N pod filters. Hardly or almost no flatspot. Close to perfection, but then again these 2 guys are perfectionists! They're still not satisfied and looking to better it. I'm envious!

Lawrence,

Not sure if you remember edmund, but he was running on a K&N panel filter(from a bandit 400) in his airbox with the top off. Produced a really bassy and nice sound. Maybe you can try this setting as well. What's the purpose of the airbox top and snorkel when you have the panel filter in already? Just wondering.

Whatever the case, the stock filter sucks big time. I'd advise anyone to remove it ASAP before it degenerates into pieces and enters the carb!

Thanks for the tip, Boss, but you don't have to teach your grandmother to suck eggs. I already have the airbox top off naturally, snorkel is absent too. hahaha

But I realised that the vibrations push the panel filter out a little, so I'm going to add a retainer to hold the filter down.

You're right about establishing baseline settings before using the K&N though. Very important to know what works first before moving on to non-stock parts.

As for pod filters, I personally don't like them because I'm also a perfectionist, and I hate having to retune my settings everytime the weather changes.

It's not impossible to get a good setting on pod filters, just very difficult. And for me, I admit, I QUIT BEFORE I GOT THERE. So yes.... I have limitations too, and that's TIME. I really couldn't be arsed to spend more than 3 months on tuning. That was the straw that broke the camel's back. Or the jet that broke Lawrence's back, to be exact.

Can I come and watch you guys do? Just want to have an idea of hands on experience. (:

Yes sure.

How does the pod filter sit? Standalone?

I'll run premix as I don't really run around alot, 1:50 a good ratio to start with? Also what's an appropriate 2T to use? As I heard a thin 2T would mix better, currently still have about 1/2 or more in my tank so I'm thinking of using it up before converting.

Lastly are the heavy duty chains from PJME been testing by anyone here, would like to hear some feedbacks.

Lawrance: I'll try to schedule in the auto chain oiler with you, do PM me days this month that you will be free? As I'll be flying off to Taiwan for 3 weeks next month 11th.

Pod filter requires removal of airbox. The pod filter takes the place of the airbox.

Better to ask mesaboogie about it. He has tried both airbox and pod filter within a short span of time and will be able to describe in detail how both compare to the other.

I started on 1:50 when I first premixed. 1 litre of 2T to 50 Litres of petrol, which means for every 1 litre of petrol you'll need 20ml of 2T.

I slowly used less and less because I realised that I could keep pushing the limit as long as my spark plug readings were good.

Eventually I've settled on 1:75 now, which means for every 1 litre of petrol, I add 13.3ml of 2T. When I pump 10 Litres of petrol, I add 130ml of 2T.

Always add 2T first before pumping the petrol in. The strong currents will churn and mix the 2T with petrol in the tank.

As for the chain oiler, I'll install for your after your Starlight holiday, and after you've installed a new chain and sprox.

thanks guys,
i was hoping that cos im "older" relatively spaking, my insurance wont be so high.
i didnt know no other insurance firm besides NTUC underwrites Aprilia. that sucks

I'm 30, my 3rd party insurance premium is $390. 7 years riding experience.

Edited March 21, 2011 by lacrimosae

benang91 · March 21, 2011

Hey riders,

I wanna check it whats the price range for Aprilia RS 125

1st hand -

2nd hand -

Insurance Costs for newly aqquired class 2B at the age of 20:

3rd Party -

FTTP -

Comprehensive -

Need some feedback as I'm taking RS125 as my first vrigin bike though! Appreciate it! (:

Cheers!

mesab0ogie · March 21, 2011

To the guys looking for jets for the 28mm carb just wana add my 2 cents.

I think using a 135 is abit to big. but THIS IS JUST MY OPINION. My reason for saying so is based on ur set ups, similar to mine back then, which is basically stock plus aftermarket pipe, i ran a 128 main jet. Using this jet i did at least 5 top speed runs, one of them was a going at WOT almost the whole length of changi coastal route(i managed to top at 166km/h there) and my bike did not have any problems. I might have been pushing my limits, but i believe a 130 or 132 should suffice. BUT the best way to test it out is really just doing the old trusty plug chop.

Regarding the pod filter vs airbox issue, again, just my 2 cents. I went straight to pod filter after installing my 34mm carb. I spent nearly 2 weeks to get the pod filter to work perfectly but to no success. The bogging issue at 5-6k rpm and 7-8krpm was always there. But once it passed that, the pull was awesome. And really nothing beats the sound of the open pod filter =) Things i changed included the atomiser, pilot jet, main jet and also needle clip position.

If you guys can recall, i had a pilot jet issue recently, and at the same time i resolved it, i decided to give the airbox a shot. Just to put things into perspective, i nearly perfected the tuning and it took me just one day(found out that removing the top snorkel really helped alot)

I will admit that the reason i couldnt get the tuning right with the open pod was due to the limited access to parts. My bike probably required a different needle, even possibly a different slide, and these parts are not readily available here in sg. Just something for guys who are keen to use open pods to consider.

BTW just an update on my bike : i MIGHT be going over to the dark side of the BBK. All depends on the condition of my block when i see it tonight =)

AEoM · March 21, 2011

I was using the 130 main jet after changing the after market exhaust and the flat spot was horrible until I change to the 135. Running so muc better after tt but theirs still a lil flat spot. Will try and get some time to do the setting.

crisisady · March 21, 2011

Guys, need some guidance. My bike is the old version (2002) so the valve opens at 7800. Yesterday after diy on my way back, I gave it a shot and here is what I feel.

1) when the valve opens, it was super loud and my bike sounded like a krr/sp.

2) there was no sudden surge or pull (I maintained my throttle at same level from 6000rpm onwards and let it pull till 9000)

3) point 1 was felt at around 8500rpm and not 7800 as written on my valve controller

4) all the above testing was done in 5th gear

So is my valve opening?

lacrimosae · March 21, 2011

Guys, need some guidance. My bike is the old version (2002) so the valve opens at 7800. Yesterday after diy on my way back, I gave it a shot and here is what I feel.

1) when the valve opens, it was super loud and my bike sounded like a krr/sp.

2) there was no sudden surge or pull (I maintained my throttle at same level from 6000rpm onwards and let it pull till 9000)

3) point 1 was felt at around 8500rpm and not 7800 as written on my valve controller

4) all the above testing was done in 5th gear

So is my valve opening?

1. Park in a place where no one will complain about the noise.

2. Remove right fairing, reach up from under the main frame, find the valve cable and trace it to the solenoid. Keep your finger there.

3. Run on idle, rev throttle past 8,500rpm. You should feel the solenoid pulling the cable and the front of the cable catch will snap onto your finger, if that happens, valve is opening. If you feel no movement at your fingertip, valve is not opening.

Good luck.

dDtim · March 21, 2011

Guys, need some guidance. My bike is the old version (2002) so the valve opens at 7800. Yesterday after diy on my way back, I gave it a shot and here is what I feel.

1) when the valve opens, it was super loud and my bike sounded like a krr/sp.

2) there was no sudden surge or pull (I maintained my throttle at same level from 6000rpm onwards and let it pull till 9000)

3) point 1 was felt at around 8500rpm and not 7800 as written on my valve controller

4) all the above testing was done in 5th gear

So is my valve opening?

Was reading up on our power valves this should help:

'should be 7900 on the rs, if you cut the red wire off the plug it will change it from 8400 down to 7900 if i remember rightly and it will change your power range. Someone else must know here or google it but i am pretty sure that its the red one.'

followed by:

just been out for a hoon and it now opens at about 7900/7800 so the red wire cutting works.

dDtim · March 21, 2011

So I was wondering about the buzzing sound at the valve opening at 8.1k rpm as per my '08.

Viknesh has advised me that my mixture runs lean when my valve opens however Ashraf has reported that it was the normal sound of the valve opening.

Basically my bike doesn't feel the sudden pull if I maintain my throttle and let it hit the 8k mark where the buzzing sound starts. But it revs up easily and picks up great speed if I open up more. I'm happy with the power only the idea of running too lean scares me.

AOEM has also said that it's due to the power valve inlet on the block being loose.

I'm confused, running on 128 stock jet with 28mm stock carb.

crisisady · March 21, 2011

1. Park in a place where no one will complain about the noise.

2. Remove right fairing, reach up from under the main frame, find the valve cable and trace it to the solenoid. Keep your finger there.

3. Run on idle, rev throttle past 8,500rpm. You should feel the solenoid pulling the cable and the front of the cable catch will snap onto your finger, if that happens, valve is opening. If you feel no movement at your fingertip, valve is not opening.

Good luck.

Master! If there is presence of krr/sp (pppppeeeehhhh) sound, is the force with me?

Sub Zero · March 21, 2011

Viknesh THE BOSS, you underestimate the importance of the floor supervisor walking around acting busy+concerned and its impact on the morale of the factory staff.

As for the electrical water pump, yes, unnecessary mod. Draws a lot of power from your battery and it runs even before your engine starts. I installed it because being me, ITCHY BACKSIDE, anything new and novel, MUST TRY!

Thanks for the tip, Boss, but you don't have to teach your grandmother to suck eggs. I already have the airbox top off naturally, snorkel is absent too. hahaha

But I realised that the vibrations push the panel filter out a little, so I'm going to add a retainer to hold the filter down.

You're right about establishing baseline settings before using the K&N though. Very important to know what works first before moving on to non-stock parts.

As for pod filters, I personally don't like them because I'm also a perfectionist, and I hate having to retune my settings everytime the weather changes.

It's not impossible to get a good setting on pod filters, just very difficult. And for me, I admit, I QUIT BEFORE I GOT THERE. So yes.... I have limitations too, and that's TIME. I really couldn't be arsed to spend more than 3 months on tuning. That was the straw that broke the camel's back. Or the jet that broke Lawrence's back, to be exact.

Sorry BIG BOSS, it slipped my mind that you're the DIY MASTER!

In all fairness, to me the major setback of the pod filter is the damn rain. Not the temperature. My bike runs fine in hot or cold weather. It's the damn rain!! The replica models have gaps below the rider seat area so the filter gets wet much more easily and your riding is screwed! But luckily, the new models have that extra piece of plastic covering that area so their filters dont get wet so easily.

Pod filters are awesome if you take the time to tune up your bike. The nonsense that your low end would be lousy is simply not true. Eddy. Sharul, even Chung's bike stand as a good example.

Sub Zero · March 21, 2011

So I was wondering about the buzzing sound at the valve opening at 8.1k rpm as per my '08.

Viknesh has advised me that my mixture runs lean when my valve opens however Ashraf has reported that it was the normal sound of the valve opening.

Basically my bike doesn't feel the sudden pull if I maintain my throttle and let it hit the 8k mark where the buzzing sound starts. But it revs up easily and picks up great speed if I open up more. I'm happy with the power only the idea of running too lean scares me.

AOEM has also said that it's due to the power valve inlet on the block being loose.

I'm confused, running on 128 stock jet with 28mm stock carb.

Hi mate,

I said your bike is running lean after the valve opens IF you feel that you turn the throttle and you can't go. That's the symptoms you described to me. The buzzing sound is normal. However, you are running abit lean now since you changed to an aftermarket exhaust.

When you change your exhaust, it's recommended that you change your main jet to 2 or more sizes bigger. That means from a 128, you jump to 132 or 135. 2 years ago, when i was riding my friend's bike, i was experimenting abit with the 28mm carb, and i decided with Ah Seng to go with a 135 main jet. It was awesome with his tuning. Then i recommended the same setting to another friend, and he was happy as well. Since then, Ah Seng has been practising this and it has worked pretty well up to date. The last guy i recommended it to just a month ago also reported good results. So i feel it's a tried and tested thing.

I think it's not just the change of main jet, but Ah Seng's tuning as well. First chance you get, go to him and get your carb washed and tuned with the main jet change. I think he's stocked up on the 135 main jets coz of this. Wash carb: $30, main jet; $10.

Try it then feedback to us.

Also, dont waste time on the chains from PJME. I highly recommended DID X ring. Excellent chain. I think $125 at 37 Motoring including installation and about $100 flat at WEDA. This chain is great for both street and track riding.

mesab0ogie · March 21, 2011

Also, dont waste time on the chains from PJME. I highly recommended DID X ring. Excellent chain. I think $125 at 37 Motoring including installation and about $100 flat at WEDA. This chain is great for both street and track riding.

i will second that. the DID x-ring chain is awesome. never had to tighten it since day 1 i installed it. Its slackened a teensy bit, but its nth compared to hw much the stock chain expanded. can tighten one day and next day its already loose.

Master! If there is presence of krr/sp (pppppeeeehhhh) sound, is the force with me?

i LOL-ed when i read this. lucky im alone in the office. and to answer your question, yes u will hear a distinct change in the tone of ur exhaust sound when the valve opens, so yes, the force IS with u.

Basically my bike doesn't feel the sudden pull if I maintain my throttle and let it hit the 8k mark where the buzzing sound starts. But it revs up easily and picks up great speed if I open up more. I'm happy with the power only the idea of running too lean scares me.

i dun know if im right by saying this, but after riding the bike awhile i also didnt feel the pull, unless i went from like quarter to full throttle. My explanation is u've gotten used to it, so u dont notice, or ur nt as exhilarated by the pull anymore. correct me if im wrong.

dDtim · March 21, 2011

i will second that. the DID x-ring chain is awesome. never had to tighten it since day 1 i installed it. Its slackened a teensy bit, but its nth compared to hw much the stock chain expanded. can tighten one day and next day its already loose.

i LOL-ed when i read this. lucky im alone in the office. and to answer your question, yes u will hear a distinct change in the tone of ur exhaust sound when the valve opens, so yes, the force IS with u.

i dun know if im right by saying this, but after riding the bike awhile i also didnt feel the pull, unless i went from like quarter to full throttle. My explanation is u've gotten used to it, so u dont notice, or ur nt as exhilarated by the pull anymore. correct me if im wrong.

DID x ring chain, 135 main, done, thanks.

I wouldn't say you're right or wrong Ashraf, but I know for sure the pull is not there probably because I throttle gently that the mixture is too lean too support the pull. in fact even though I have ordered the 34mm, Im gonna try ah seng's settings and see how it feels so I know how my bike should feel

Minimally once I start working on the 34mm.

Yeah I'll be meeting Chris soon to hear his new aprilia model kr125!

crisisady · March 21, 2011

DID x ring chain, 135 main, done, thanks.

I wouldn't say you're right or wrong Ashraf, but I know for sure the pull is not there probably because I throttle gently that the mixture is too lean too support the pull. in fact even though I have ordered the 34mm, Im gonna try ah seng's settings and see how it feels so I know how my bike should feel
Minimally once I start working on the 34mm.

Yeah I'll be meeting Chris soon to hear his new aprilia model kr125!

yesh yesh' i shall hear whether yr sp125 is similar to my kr125!

crisisady · March 21, 2011

DID x ring chain, 135 main, done, thanks.

I wouldn't say you're right or wrong Ashraf, but I know for sure the pull is not there probably because I throttle gently that the mixture is too lean too support the pull. in fact even though I have ordered the 34mm, Im gonna try ah seng's settings and see how it feels so I know how my bike should feel
Minimally once I start working on the 34mm.

Yeah I'll be meeting Chris soon to hear his new aprilia model kr125!

yesh yesh' i shall hear whether yr sp125 is similar to my kr125!

dDtim · March 21, 2011

yesh yesh' i shall hear whether yr sp125 is similar to my kr125!

Heh heh, anyways Chris I found a place we can work at, it's at this multiple storey carpark, which the top levels have almost no cars especially before evening. Has access to a hose as well, did some washing there, most importantly will not warrant a complaint easily from blowing due to it's location being a good 200m from the nearest block.

It's at lower delta where Glenn stays, so I'll try to arrange for a washing session once I get hold of my schedule

dDtim · March 21, 2011

Lawrance stopped us for abit to educate us on the smells coming from helmets.

He mentioned that the bad odour coming from the helmet comes not from sweat but from the helmet chaffing off our dead skin cells from our face due to the tight fit nature of full faces. Bacteria acts on the deadskin cells which embeds into our helmet cushions which he highlights - could not be removed entirely from washing and sunning.

He suggested balaclavas or what people call 'fire-masks'.

Balaclavas are usually designed to be thicker but I have found a source from my camp instructors whereby the balaclavas are thinner but serves the same function.

These are full faces leaving a slit at the mouth area and eye area. Double ply linen and cotton material so it's still permeable to air so you still feel cool when riding.

These are especially useful for people who like to ride with open visors as well due to the dust and dirt.

Will manage to get hold of these next week and should not cost more than $12. I will update when I go down to take a look.

liquidy · March 21, 2011

anyone interested in getting anything from S3 Performance PM ME. They sells riding apparels, Wavey Discs, Gopro Cameras. I might be getting wavey discs from them, so if anyone wants to get anything, we can share the shipping.

Closing this Wednesday.

crisisady · March 21, 2011

Heh heh, anyways Chris I found a place we can work at, it's at this multiple storey carpark, which the top levels have almost no cars especially before evening. Has access to a hose as well, did some washing there, most importantly will not warrant a complaint easily from blowing due to it's location being a good 200m from the nearest block.

It's at lower delta where Glenn stays, so I'll try to arrange for a washing session once I get hold of my schedule

Okay sweet!!! lower delta is a good location, pretty central.

AEoM · March 21, 2011

Tim pls call me up when u guys r going for bike wash. After those bloody rain, my bike looks like I've been off road w rs125.

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