CBR150R Riders, Join us now!

[d0n]

changed to sp carb already. can feel the diff in the lower end =)). no diff on top end=((. bt the drop in fc is quite bad tho.top up full tank and rode 100km only and the petrol is approacing half already.

 

wow...i like yr style. say & immediately do! curious. besides replacing the the carburettor, what other stuff did the mechanic do in order to fit in the SP carb?

 

btw, anybody can enlighten me on different sprocket combinations & their rationale? i only know that they affect the performance of the bike and its efficiency

just changed new chain + sprocket tdy. got it for $60 inclusive installation @ LAB. the DID chain looks chio, gold chain + black color sprockets.

but it dint really solve the rattling sound im hearing when RPM reaches 4-5K.

sad. got to try re-tracing the source of the sounds already. =(

anyway, i got 15-42 for front & rear sprocket size.

 

for sprocket mod,

front - the more teeth the lower acceleration and higher top speed

rear - the more teeth the higher acceleration and lower top speed

 

bear in mind that if u were to change the sprocket size by too much, u may end up losing both acceleration and topspeed.

cause engine is not capable of churning out enough power for u.

Edited April 14, 2011 by d0n^

[underage91]

hi, would like to ask, how much does inspection cost? i need to send my bike for inspection soon.

[xXxRatedxXx]

hi, would like to ask, how much does inspection cost? i need to send my bike for inspection soon.

 

 

10 char

[underage91]

i see. thanks bro for clearing my doubt.

[ashiem]

changing the carb into sp 28mm aint gonna push ur bike for top speed or better torque...if prefer to mod the torque, might as well just replace the mainjet pin size..

 

thats cheaper n well better proven with perfect tuning , compare replacing the stock carb with sp28mm carb...

 

whats the point of putting a bigger carb, but didnt remove the the stock cdi restriction...you are able to hit higher rpm with a bigger carb, but then, restricted on the cdi...

 

IMHO...

[w3nny]

Post deleted ~~~~~~~~~

Edited February 20, 2017 by w3nny

[Alpheus]

wow...i like yr style. say & immediately do! curious. besides replacing the the carburettor, what other stuff did the mechanic do in order to fit in the SP carb?

 

he said need more air intake hence needa take out the airfilter. any downside do it? if there is then i think buying k&n airfilter should do it thouhg its kinda pricey =/.

 

ust changed new chain + sprocket tdy. got it for $60 inclusive installation @ LAB. the DID chain looks chio, gold chain + black color sprockets.

 

but it dint really solve the rattling sound im hearing when RPM reaches 4-5K.

sad. got to try re-tracing the source of the sounds already. =(

anyway, i got 15-42 for front & rear sprocket size.

 

for sprocket mod,

front - the more teeth the lower acceleration and higher top speed

rear - the more teeth the higher acceleration and lower top speed

 

bear in mind that if u were to change the sprocket size by too much, u may end up losing both acceleration and topspeed.

cause engine is not capable of churning out enough power for u.

 

nice.black one. whats the size for stock sprockets? i checked mine...the rear is 44. previous owner's. any size to recommend me?

[Alpheus]

changing the carb into sp 28mm aint gonna push ur bike for top speed or better torque...if prefer to mod the torque, might as well just replace the mainjet pin size..

 

thats cheaper n well better proven with perfect tuning , compare replacing the stock carb with sp28mm carb...

 

whats the point of putting a bigger carb, but didnt remove the the stock cdi restriction...you are able to hit higher rpm with a bigger carb, but then, restricted on the cdi...

 

IMHO...

 

wah.didnt knew that. should have told me earlier. haiz. yar. im planning to get an aftermarket cdi.one step at a time . but not sure where to get it in sg. btw, any more recommendations on what sort of mod to do on stock engine othen than carb, sprocket and cdi?

Edited April 16, 2011 by Alpheus

[Red_Devils]

just changed new chain + sprocket tdy. got it for $60 inclusive installation @ LAB. the DID chain looks chio, gold chain + black color sprockets.

 

so cheap? heavy duty rite?

 

changing the carb into sp 28mm aint gonna push ur bike for top speed or better torque...if prefer to mod the torque, might as well just replace the mainjet pin size..

 

thats cheaper n well better proven with perfect tuning , compare replacing the stock carb with sp28mm carb...

 

whats the point of putting a bigger carb, but didnt remove the the stock cdi restriction...you are able to hit higher rpm with a bigger carb, but then, restricted on the cdi...

 

IMHO...

 

i fully agree with all these statement.

 

he said need more air intake hence needa take out the airfilter. any downside do it? if there is then i think buying k&n airfilter should do it thouhg its kinda pricey =/.

 

nice.black one. whats the size for stock sprockets? i checked mine...the rear is 44. previous owner's. any size to recommend me?

 

what do u think the downside will be, logically?

 

stock 15-44. 14-42 will be the best combination for both tourqe & top end, but slightly lower fc. currently im using 14-44, best for my size + throttle bit more can overtake other so easily, but im getting 90kph at 7k rpm. in the end, its all depend on what the rider want.

[Red_Devils]

wah.didnt knew that. should have told me earlier. haiz. yar. im planning to get an aftermarket cdi.one step at a time . but not sure where to get it in sg. btw, any more recommendations on what sort of mod to do on stock engine othen than carb, sprocket and cdi?

 

coil, tyre, sp, air filter, exhaust, throttle, racing clucth, n most important after u change all these, brake system. some ppl change this & that, but brake system stock, how to stop the bike? these ppl wont be able to ride for long.

 

might as well buy big bike, brother.

[ashiem]

coil, tyre, sp, air filter, exhaust, throttle, racing clucth, n most important after u change all these, brake system. some ppl change this & that, but brake system stock, how to stop the bike? these ppl wont be able to ride for long.

 

might as well buy big bike, brother.

 

correct...upon mod for performance...second thought in mind is to upgrade the suspension n braking power...u are able to achieve high speed ( assume )

 

but then cannot stop ur bike within the limit time..useless ehhh...

[d0n]

he said need more air intake hence needa take out the airfilter. any downside do it? if there is then i think buying k&n airfilter should do it thouhg its kinda pricey =/.

 

nice.black one. whats the size for stock sprockets? i checked mine...the rear is 44. previous owner's. any size to recommend me?

 

hm..so the stock airbox is gone i suppose? i hope u kept those original parts the shop took out? just in case u want to revert back to stock setup.

 

for air filter, general rule is that anything that lets in more air (i.e. better air flow) is likely to allow more dirt particles into the carburettor & maybe engine.

 

my 15-42 sprocket setup is exactly similar to the previous set of sprocket i had. so far so good. about 95kmph at 7k rpm.

 

so cheap? heavy duty rite?

looks like o-ring to me~

[d0n]

i remember someone enquired about gold fren brakepads sometime back.

did the bro managed to find a place selling it + have stocks available? realise that the new pair of pads i have doesnt work as great in wet.

i wan gold fren~

[Red_Devils]

my 15-42 sprocket setup is exactly similar to the previous set of sprocket i had. so far so good. about 95kmph at 7k rpm.

 

 

looks like o-ring to me~

 

its not right, imo, u can only get 95kph at 7k rpm by this combo. even stock 15-44 can get 100kph. something is not right.

ur tyre size stock?

eo 40 or 50?

 

no way u can get o ring chain + sprockets at that price. include installation rite?

[d0n]

its not right, imo, u can only get 95kph at 7k rpm by this combo. even stock 15-44 can get 100kph. something is not right.

ur tyre size stock?

eo 40 or 50?

 

no way u can get o ring chain + sprockets at that price. include installation rite?

 

haha...no clue man! i'm getting the exact same speed @ same rpm compared to the previous set of sprockets.

my tyres are smaller than stock actually. 90-80.

EO used is Power1 semi-syn. so it's 40.

 

hmmm...since i've been getting this kind of speed/RPM ratio for quite some time already, dont think this is linked to the discovery i made yesterday when i took out air filter to wash.

my fuel suction pump was loose~ think im somewhat losing abit of petrol here & there but don't tink this really affected the speed/RPM ratio.

 

when i walked in to LAB and asked for new chain & sprocket. ah boy says there is chain + sprocket ranging from $30+ to $80+. hahaha. i picked e one he priced at $68 (inclusive sprocket + installation) and negotiated down to $60. he budged cause he dint have OEM sprocket available (thats why i got 15-42 instead of 15-44).

[xXxRatedxXx]

whoa... $30 chain sprocket set.... pi ka lao sai!

 

@DON so your rear 42 teeth means more top speed? Sorry i noobs... dono anything...

[w3nny]

Post deleted ~~~~~~~~~

Edited February 20, 2017 by w3nny

[Puteraboncet]

hi bros, I jst bought a 2009 CBR 150 second hand (: so far so good bt just wanna know , 2nd gear onwards at what RPM do u guys strt changing gear ? 6k or 7k or 8k ? (: just 2 days riding it (inc today). hope can get some pointers and advice frm bros here (:

[ahbiao]

depends...when i wake up late, i change at 11k.

if i go home early, i change at 5k.

pretty smooth, whichever the rpm range.

[Alpheus]

coil, tyre, sp, air filter, exhaust, throttle, racing clucth, n most important after u change all these, brake system. some ppl change this & that, but brake system stock, how to stop the bike? these ppl wont be able to ride for long.

 

might as well buy big bike, brother.

 

i dont wanna mod too much because im not using the bike for track anw. i'll just stick to the simple ones like changing sprocket etc.

[Alpheus]

whats your average & maximum speed for cbr150?

 

max stock 140. downhill can gt 150.

[Alpheus]

hi bros, I jst bought a 2009 CBR 150 second hand (: so far so good bt just wanna know , 2nd gear onwards at what RPM do u guys strt changing gear ? 6k or 7k or 8k ? (: just 2 days riding it (inc today). hope can get some pointers and advice frm bros here (:

 

its subjective to the rider. whichever you feel comfortable. i think the valve opens ard 8k. so if you want to ride conservatively, change before 8k,

[endybike]

hi bros, I jst bought a 2009 CBR 150 second hand (: so far so good bt just wanna know , 2nd gear onwards at what RPM do u guys strt changing gear ? 6k or 7k or 8k ? (: just 2 days riding it (inc today). hope can get some pointers and advice frm bros here (:

 

you bought the blue CBR at yishun there? may i know how much is your insurance?

[xXxRatedxXx]

double post

[xXxRatedxXx]

hi bros, I jst bought a 2009 CBR 150 second hand (: so far so good bt just wanna know , 2nd gear onwards at what RPM do u guys strt changing gear ? 6k or 7k or 8k ? (: just 2 days riding it (inc today). hope can get some pointers and advice frm bros here (:

I like to change up quickly to top gear.... save petrol... so can just whack it up at 2-5k Rpm hey no problem