Aprilia Riders

[MaTrIx87]

Originally posted by jinhanz@Jul 25 2005, 03:08 PM

by the way chris this sat free to view bike for mi??? and vick vincent andrew speedkills and whoever wanna go together??? haha

ill be free juz call me n ill be there but weekdaes 8 - 6 schling hah

[chipmunk]

I was left out

 

 

Aprilia Riders Club (ARC)

Axxis Chris (9125-6095) RS125 Woodlands

berukblue hanif (9477-3946) RS125 Woodlands

Benguin46 Benedict (9698-8499) waiting for tp ([email protected])

Bluesea01 Henry (9877-5179) Serangoon

Bokers Julian (97441244) RS125 Replica East Coast

cheng_xi07 (9021-0871) RS125 Novena (RS125 scrapped)

Chipmunk Fadzlin (9048-0892) Choa Chu Kang ([email protected])

CMYRS Andre (9199-2019) RS125 Seletar

cruz cruz (9482-6421) RS125 Johore

Den Dennis (9877-4776) RS250 Tampines

Divine^ponytailz Jude (9436-0943) RS250 Serangoon North

DNAdevil Vincent (98456865) RS125 Sembawang

efferverscence dave (9008-8848) upper serangoon

eyz Chin Kuan (9239-0400) RS125 Potong Pasir

fibre Alex (9199-8979) RS125 Sengkang

gonggong (9637-7477) RS125 Tiong Bahru

Jmega Johan (9756-6466) RS125 Novena

kink galen (9046-9601) RS125 Holland Rd

lacrimosae Lawrence (9863-2724) RS125 Serangoon

lightbolt75 Godfrey (9336-1475) RS125 Y2K Braddell ([email protected])

M@+r!x Andrew (9855-4161) AMK

macan_putih Khai (9042-2503) RS125 Boon Lay

maiker Michael (9691-6356) RS250 Jurong

muser Chris (9740-5630) '04 Y2K RS125 Tampines

myxilplix Rafeal (9125-5705) RS250 Marsiling

Roadster Mark (9675-1984) RS250 East Coast

ROTHMANS Derrick (9450-5124) RS250 Woodlands

SafetyCar aka Guan (9848-8259) RS125 West Coast

servoprax wan (9822-6237) Former-RS125+RS250 Paris

snowparang Hansen (9479-0437) RS250 Bukit Batok

Speedkills Samuel (9106-0925) Yew Tee (waiting for TP) RS125

sPideR Marcus (9757-0644) Former-RS250 Pasir Ris

spiderman Alex (9734-8976) RS250

Sub Zero Viknesh (9182-0340) RS125 AMK

Visor Benjamin (9782-8437) RS125

_wacko_ Syah (9012-6423) RS250 Boon Lay

warren84 Warren (9150-2864) RS250 Hougang

xiongzzz(9665-4547) RS125 Bishan

xxes123 Edwin (9826-5496) RS125 Yishun

Yaz (9471-3741) '04 Y2K RS125

[muser]

Originally posted by jinhanz

by the way chris this sat free to view bike for mi???

Shouldn't be a problem. Let me know what time, etc.

 

----------

 

Spark plugs and ignition

 

Kevin Cameron points out in his book that a matchstick lights a stove as well as a blowtorch. He elaborates that well-balanced air-fuel mixtures require only a minimal spark to be ignited - if power goes up when you go with a hotter ignition system, you had a bad mixture to begin with.

 

I've been thinking though: Cameron's talking about perfect air-fuel mixtures. But most of us run a bit rich on our street machines, and I think rich mixtures are harder to ignite. Maybe that's why many riders report better performance with fancier spark plugs. Khairul (macan putih) uses only NGK and Denso iridium plugs, and says he gets more high-end power with them compared to standard plugs. I have no idea - I've only used standard plugs on my bikes. What does everyone think? Does the expensive stuff make a difference? Lawrence says no difference. But Darren at Regina claims Derrick (ROTHMANS) uses NGK Racing Plugs.

 

I've been reluctant to mess with my ignition for fear of straining my magnetic coil, or screwing up the sensitive electrical system in some other way. But I finally gave in and bought an NGK Racing Cable, which is the same as stock except for lower resistance and better insulation. I haven't installed it yet though cuz I want to monitor my latest carb jetting for a few more days.

[eyz]

Originally posted by muser@Jul 25 2005, 02:31 PM

I think there's been enough time for people to move their names from the "inactive" list to the "active" one, so I've taken the liberty of streamlining the ARC members list. I've moved up those from the "inactive" list that I think still ride Aprilias, or that still pop in from time to time. Feel free to adjust the list any way you see fit - can even go back to the "active" and "inactive" division if you want.

i think soon there'll be a west, north, east and etc list.. hehe

 

hey ya uploading the fotos we took on Sunday?

[spiderman]

Originally posted by muser@Jul 25 2005, 02:31 PM

Got, you just didn't realise it. You kana nominated, and the judges even decided, without you realising it, kekeke! Aprilia Idol (AI). Better don't say Singapore Aprilia Idol.

 

 

 

 

[spiderman]

i got some good stuff to post again... my friend is selling his 125 stuffs...

one block, a full clutch basket to cutch plates, transmission gears, delorto carb(bore to 38mm), a single seater extrema tail... pm me for more details

[Sub Zero]

Originally posted by spiderman@Jul 25 2005, 06:13 PM

i got some good stuff to post again... my friend is selling his 125 stuffs...

one block, a full clutch basket to cutch plates, transmission gears, delorto carb(bore to 38mm), a single seater extrema tail... pm me for more details

Got valve to sell? or speedo gear?

[jinhanz]

hahahaha vick looking for extra vlave huh

[muser]

Originally posted by eyz+-->

QUOTE (eyz)

hey ya uploading the fotos we took on Sunday?[/b] Soon, I promise - just no time or energy yet, heheh. I don't think the pictures were that great though since so rushed and the lighting not great.

[Benguin46]

Can use on Replica or not? If can, I think got maaany people who will want it.

i will definately want 1.. hahaha!!!

[MaTrIx87]

Originally posted by spiderman@Jul 25 2005, 06:13 PM

i got some good stuff to post again... my friend is selling his 125 stuffs...

one block, a full clutch basket to cutch plates, transmission gears, delorto carb(bore to 38mm), a single seater extrema tail... pm me for more details

eh alex does ur fren had the left side of handle bar signal lights controls tt chunk there? my the plastic inside broke n its freely turning arnd

[Sub Zero]

Originally posted by jinhanz@Jul 25 2005, 06:57 PM

hahahaha vick looking for extra vlave huh

Ya lor, my valve jam i think.. still havent open her up and check.. Jus getting prepared for the worst...

[Sub Zero]

Originally posted by jinhanz@Jul 25 2005, 03:08 PM

by the way chris this sat free to view bike for mi??? and vick vincent andrew speedkills and whoever wanna go together??? haha

Bro.. i dun mind coming down.. I'll just follow Andrew.. What bike is it that you looking at? Got link?

[Visor]

Originally posted by muser@Jul 25 2005, 07:06 PM

Can use on Replica or not? If can, I think got maaany people who will want it.

 

----------

 

Flat Spots

 

An exhaust system serves as a pump to evacuate exhaust gases from the combustion chamber. This pump action also serves to suck fresh air-fuel mixture into the chamber. At certain parts of the rev range, the exhaust system will suck in fresh mixture just in time to increase torque. This is where exhaust systems boost power. However, the engine's cycle varies such that if the exhaust pump action is perfectly in sync at some places, it will inevitably be out of sync in other places. When it's out of sync, double caburetion occurs, creating a flat spot. So, flat spots are often rich spots.

 

I believe most flat spots on our Aprilias are caused by exhaust systems, especially those bikes fitted with aftermarket exhausts. If a flat spot's caused by richness, it'll burble and seem to choke. If it's caused by lean-ness, it'll simply cut out with no response.

 

This explains lots of things I've experienced. Rich flat spots are often eliminated by jetting down. However, overall power and peak power also decreases if you jet down till your flat spot disappears. That's because if you're running a perfect air-fuel mixture in the flat spot area, you'll be running lean in all other areas. If you refuse to live with a flat spot, you may be giving up the benefits of your exhaust system.

 

Flat spots can be minimised, for sure, but I'm not sure if the goal should be to eliminate them, especially if our goal is to maximise the high-end power of our revvy Aprilias. Personally, I've settled for a rich flat spot that's only slightly noticeable at 1/4 throttle. In exchange, my tacho needle flies when the power valve opens.

 

About lean flat spots: this is much simpler. Simply jet up. This may explain Andre's flat spot disappearing. I recently eliminated a lean flat spot at full throttle by jetting up too.

 

Thoughts and feedback anyone?

 

hmm... that puts things into perspective.

[eyz]

Originally posted by Sub Zero@Jul 25 2005, 07:32 PM

Ya lor, my valve jam i think.. still havent open her up and check.. Jus getting prepared for the worst...

eh wat are ya waitin for?? waitin for enuff carbon to build up which will make it even difficult to remove?? go check it out soon..

but tat is if the valve isn't broken..

[CMYRS]

Originally posted by muser@Jul 25 2005, 04:04 PM

 

Spark plugs and ignition

 

Kevin Cameron points out in his book that a matchstick lights a stove as well as a blowtorch. He elaborates that well-balanced air-fuel mixtures require only a minimal spark to be ignited - if power goes up when you go with a hotter ignition system, you had a bad mixture to begin with.

 

I've been thinking though: Cameron's talking about perfect air-fuel mixtures. But most of us run a bit rich on our street machines, and I think rich mixtures are harder to ignite. Maybe that's why many riders report better performance with fancier spark plugs. Khairul (macan putih) uses only NGK and Denso iridium plugs, and says he gets more high-end power with them compared to standard plugs. I have no idea - I've only used standard plugs on my bikes. What does everyone think? Does the expensive stuff make a difference? Lawrence says no difference. But Darren at Regina claims Derrick (ROTHMANS) uses NGK Racing Plugs.

 

I've been reluctant to mess with my ignition for fear of straining my magnetic coil, or screwing up the sensitive electrical system in some other way. But I finally gave in and bought an NGK Racing Cable, which is the same as stock except for lower resistance and better insulation. I haven't installed it yet though cuz I want to monitor my latest carb jetting for a few more days.

For the RS, unless the bike has been modded and tuned to an extent that the normal copper plugs wont do, then maybe consider plat plugs.

 

They were built to last longer than copper ones i.e. longer service intervals.

Denso, HKS, Greddy and whatever brands out there mainly come from the BIG 3 plug companies, NGK, Champion & Bosch.

 

Most of the aftermkt companies relabel their plugs and slap their own labels on them and sell them for more.

 

Unless ure running very high compression, have a raced engine, forget plat plugs, save your $$$.

 

If you think they give u an edge, go for it, whatever that makes you happy makes me happy, I believe its all in the head, wack it on the dyno, dont take my word for it.

[jinhanz]

the yellow y2k in classfied. i quote him 2200. he say view already then say he wan mi add 200 more. but dun realli think i will cause not i dun wan but finicial problem. haha. mi insurance sure ex so muz factor that in.

[Benguin46]

i called the guy selling his rs125 for 1.5k!! he said its a replica n he is malaysian.. going back to m'sia soon n thts y wanna sell his bike..

[jinhanz]

benguin add mi in msn [email protected]

[lightbolt75]

Originally posted by spiderman@Jul 25 2005, 06:13 PM

i got some good stuff to post again... my friend is selling his 125 stuffs...

one block, a full clutch basket to cutch plates, transmission gears, delorto carb(bore to 38mm), a single seater extrema tail... pm me for more details

Any tachometer.... how is the clutch plates condition? Good? Price?

[speedkills]

hey guys, maybe one of you can give me a rough figure if i wanna change these few things... here goes:

 

1) cluth/brake cables to the metal one(if thats what you call it)

2) brake pads

3) chain (DID/O ring -which better?)

 

yup these things...

[spiderman]

Originally posted by muser@Jul 25 2005, 07:06 PM

Can use on Replica or not? If can, I think got maaany people who will want it.

 

i am not so sure if can use anot.... maybe need to mod some parts bah... do some research....

[spiderman]

Originally posted by lightbolt75@Jul 25 2005, 10:31 PM

Any tachometer.... how is the clutch plates condition? Good? Price?

he say clutch basket and clutch plate in good condition selling as a set at 120... i think thats very cheap...

[speedkills]

Originally posted by spiderman@Jul 25 2005, 11:29 PM

he say clutch basket and clutch plate in good condition selling as a set at 120... i think thats very cheap...

hey doctor, the clutch basket will cost how much outside? maybe can buy to stock up..hehe

 

doctor wanna come out for supper now? hungry

[DNAdevil]

Originally posted by jinhanz@Jul 25 2005, 03:08 PM

by the way chris this sat free to view bike for mi??? and vick vincent andrew speedkills and whoever wanna go together??? haha

wat time and where i cant confirm cos this sat is a wrking sat for me