Jump to content
SingaporeBikes.com Telegram Now LIVE! Join NOW for the Last Reviews, News, Promotions & Offers in Singapore! ×
  • Join SingaporeBikes.com today! Where Singapore Bikers Unite!

    Thank you for visiting SingaporeBikes.com - the largest website in Singapore dedicated to all things related to motorcycles and biking in general.

    Join us today as a member to enjoy all the features of the website for FREE such as:

    Registering is free and takes less than 30 seconds! Join us today to share information, discuss about your modifications, and ask questions about your bike in general.

    Thank you for being a part of SingaporeBikes.com!

Recommended Posts

Posted
One variable affecting another variable.

That's the point I'm trying to raise.

 

What magnitude the effect of the variable interaction has, we cannot measure.

 

Why not eliminate all unknowns and stick to one variable change that does not affect another variable to see the end results?

 

that is wat happened on the road everyday when we r riding. one variable affecting another variable. we cannot eliminate all unknowns cos eventually, all unknowns still exist.

 

initially, only the distance travelled to work is different. but after that, the 300km standard distance covered comes into picture. one is 20km n the other is 40km. so there is a point when they reach 300km. from there, we calculate the possible start up n warm up cycles. so, a NEW variable (the start up n warm up cycle) comes into picture BUT with a different figure. likewise, another new variable of the total warm up time taken comes into picture.

 

 

Number of traffic lights and traffic density between the 2 different routes or between different days on same routes or different days on same routes???...

 

See what I mean?

Too many variables being introduced even more because of 2 different routes.

We would not know the magnitude.

 

the route to tuas or to changi have to b the same. same time everyday. example 7am move off. this is to get the affecting factors like traffic conditions as close as possible so that the result will b fair.

 

that is y there is one condition that states, travelling speed of 100km/h with no traffic obstructions. that will mean from point A to point B, non stop all the way till the destination. that is to eliminate factors like the traffic light, traffic density, different routes n so on. cos to include all these will only complicate everything.

 

 

 

So just imagine.

From your house to Tuas.

One route.

Traffic conditions would be significantly similar. Number of traffic lights would be similar.

 

My route from JE to Tampines, the riding pattern is virtually the same (I know where is smooth traffic and where the dense traffic will begin and end) unless there is a major accident along the way. But that is rare (6 months I've worked here only twice I've seen anomalies in traffic pattern due to a major accident).

 

Distance is similar.

 

Only change is either you warm-up the bike longer and shorter.

 

Alternatively, you either warm-up or you don't.

every variable have to b as close to similar as possible. during the test, its either warm up with the given timing or dun warm up at all thru out the test.

 

y is it so? cos we wanna prove the more time spent on idling(warming up) will mean more petrol consumed. less time spent on idling(warming up) will mean less petrol consumed.

 

 

Single variable change at a time and does not affect all other factors except a direct change in the end-result, of which the magnitude is limited and measurable.

 

If you can replicate this test to prove your theory on time of warm-ups as well as number of warm-ups seperately can affect FC, not only me but I'll bet the entire SBF will throw their lot behind you and support it.

 

Agreed, no?

we would wan a standard solution or formula to calculate FC. but FC is affected by many factors. so no way we can get a standard solution or formula. so its more of a case to case matter.

 

on paper, its very easy but on the road, its very hard cos alot of factors will affect the result. we can even include factors like weight, resistence, wind speed, wind direction, up or down terrain etc to complicate things. so we minimise the complicated factors, n give an ideal scenerio. standard weight, no resistence, no wind at all, a flat terrain. that will b the ideal result but we can only use them as a reference.

Honda Super 4 Ver S: Mar 02 - Sept 05

PGO Gmax 150: Sept 05 - Dec 05

Honda Super 4 Vtec 1: Nov 05 - Apr 07

Suzuki GSR 400: Apr 07 - Dec 09

Yamaha FZ1S: Nov 09 - May 13

Kawasaki GTR 1400: Jan 13 - ??? ??

Yamaha FZ16ST: May 14 - ??? ??

Posted

bros. juz a question here. d 400 have no aftermarket exhausts right? or do they have?

Jεήgσ™ : |l|l|ll| With great power comes great responsibilities.Think safe, ride safe |ll|l|l|

Posted

on paper, its very easy but on the road, its very hard cos alot of factors will affect the result. we can even include factors like weight, resistence, wind speed, wind direction, up or down terrain etc to complicate things. so we minimise the complicated factors, n give an ideal scenerio. standard weight, no resistence, no wind at all, a flat terrain. that will b the ideal result but we can only use them as a reference.

 

So is it fair to say we both cannot figuratively and conclusively prove the theory by either test methods, short of getting a proper 'clean' test enivronment (e.g. a consistent track) in a controlled environment, both of which we don't have?

 

Coz if it took that long to come to that, I bet all of us (other Gissers included) have destroyed a significant amount of brain cells poring over the pages we just created....

 

:lol: :lol:

Posted
So is it fair to say we both cannot figuratively and conclusively prove the theory by either test methods, short of getting a proper 'clean' test enivronment (e.g. a consistent track) in a controlled environment, both of which we don't have?

 

Coz if it took that long to come to that, I bet all of us (other Gissers included) have destroyed a significant amount of brain cells poring over the pages we just created....

 

:lol: :lol:

 

i wouldn't say that. if we use one test bike on a dyno machine, it is possible to prove our theory. y i say so? out on the road, there r factors we cannot control ie wind n terrain. on a dyno machine, its an enclosed enviroment with air at room temperature, standard terrain since bike is on the machine, no resistence, no wind at all. the same guy doing the dyno runs. so, we had instantly eliminated all the uncertain factors that we encounter on the road.

 

so, using a dyno machine, we do the same tests again.

 

1st condition:

- full tank of petrol.

- standard distance travelled of 300km b4 top up.

- distance to work place is 20km.

- warm up time of 5 minutes.

- travelling speed of 100km/h from point A to point B with no traffic.

 

2nd condition:

- full tank of petrol.

- standard distance travelled of 300km b4 top up.

- distance to work place is 40km.

- warm up time of 5 minutes.

- travelling speed of 100km/h from point A to point B with no traffic.

 

since the test is on a dyno machine, there is no traffic at all. so we can all the way use a travelling speed of 100km/h. we will b using both the speedometer n ODO meter on the bike n the dyno machine.

 

with the 1st condition, just like normal run, after 20km, stop bike, off the ignition, then on again, simulate warm up of 5 minutes by letting the engine idling for 5 minutes. then continue again n again to the 300km mark.

 

with the 2nd condition, just like normal run, after 40km, stop bike, off the ignition, then on again, simulate warm up of 5 minutes by letting the engine idling for 5 minutes. then continue again n again to the 300km mark.

 

now, we can stop exactly at 300km. cos we can have standby petrol near the dyno machine. on the road, we have to find the nearest petrol kiosk. so its either abit more or abit less.

 

so with that, we can get a more accurate answer that we want rite?

near work place = shorter distance to work = more warm up cycle = more time spent on warm up. hence more petrol consumed due to more time spent on warm up.

 

far work place = longer distance to work = less warm up cycle = less time spent on warm up. hence less petrol consumed due to more time spent on warm up.

Honda Super 4 Ver S: Mar 02 - Sept 05

PGO Gmax 150: Sept 05 - Dec 05

Honda Super 4 Vtec 1: Nov 05 - Apr 07

Suzuki GSR 400: Apr 07 - Dec 09

Yamaha FZ1S: Nov 09 - May 13

Kawasaki GTR 1400: Jan 13 - ??? ??

Yamaha FZ16ST: May 14 - ??? ??

Posted
Wow,dat's a damn nice pair of gloves...$90 ah,hmmz

 

ok lar i feel the a.stars look nicer.. but then agn the a.stars are way too expensive..

http://img233.imageshack.us/img233/7100/vfrsiggy.jpg
Posted
ok lar i feel the a.stars look nicer.. but then agn the a.stars are way too expensive..

 

Yah, I feel the same way too.. Really love A.stars,muz wait till my salary above $2k den can afford ah

:cheeky: :cheeky: :cheeky:

The difference between men and boys is the lessons they learn

Posted
Yah, I feel the same way too.. Really love A.stars,muz wait till my salary above $2k den can afford ah

:cheeky: :cheeky: :cheeky:

 

No la dun say until like dat....only needs to save up to 2 - 3 months should be able to get one. Patience is a virtue. hehehe Dun tell me cannot say $50 per month. If cannot, then really got problem already hehehe.

 

Be like me, 1 item 1 month ehheheh....but dun follow me.

* Suzuki GSR750

----------------------------

http://badges.fuelly.com/images/smallsig-metric2/196279.png

Posted
haha...

dun liddat say ma..

we definitely frenz...

 

at least i still got tell u ma..

 

Bro,u got visit Chong Aik?

The difference between men and boys is the lessons they learn

Posted
Bro,u got visit Chong Aik?

 

yeah...

did...

e promotion gloves no more size for wat i want...

 

so went back to regina...

i din buy anything in e end...

only flareon n fzss did...

 

i go there help em bargain only...

Posted
bros. juz a question here. d 400 have no aftermarket exhausts right? or do they have?

 

bros. any ans to these?

Jεήgσ™ : |l|l|ll| With great power comes great responsibilities.Think safe, ride safe |ll|l|l|

Posted
Aft werk I'll be going back straight,I'll be sending my GF to werk 2nite...

N fetching her 2moro at 0730,so need a gud rest...

Sat gonna spend the whole day at hm,preparing my stuff 4 my 1st ICT in 2 weeks time...

 

bro, ur unit 778 is it?

Posted

guys

 

about monday morning, i cant make it at 8am. got something to settle first. i can only meet you guys up after 1030am.

 

sorry guys. i'll make arrangement with wildcard.

rien d'autre que le max.

Posted
i wouldn't say that. if we use one test bike on a dyno machine, it is possible to prove our theory. y i say so? out on the road, there r factors we cannot control ie wind n terrain. on a dyno machine, its an enclosed enviroment with air at room temperature, standard terrain since bike is on the machine, no resistence, no wind at all. the same guy doing the dyno runs. so, we had instantly eliminated all the uncertain factors that we encounter on the road.

 

so, using a dyno machine, we do the same tests again.

 

1st condition:

- full tank of petrol.

- standard distance travelled of 300km b4 top up.

- distance to work place is 20km.

- warm up time of 5 minutes.

- travelling speed of 100km/h from point A to point B with no traffic.

 

2nd condition:

- full tank of petrol.

- standard distance travelled of 300km b4 top up.

- distance to work place is 40km.

- warm up time of 5 minutes.

- travelling speed of 100km/h from point A to point B with no traffic.

 

since the test is on a dyno machine, there is no traffic at all. so we can all the way use a travelling speed of 100km/h. we will b using both the speedometer n ODO meter on the bike n the dyno machine.

 

with the 1st condition, just like normal run, after 20km, stop bike, off the ignition, then on again, simulate warm up of 5 minutes by letting the engine idling for 5 minutes. then continue again n again to the 300km mark.

 

with the 2nd condition, just like normal run, after 40km, stop bike, off the ignition, then on again, simulate warm up of 5 minutes by letting the engine idling for 5 minutes. then continue again n again to the 300km mark.

 

now, we can stop exactly at 300km. cos we can have standby petrol near the dyno machine. on the road, we have to find the nearest petrol kiosk. so its either abit more or abit less.

 

so with that, we can get a more accurate answer that we want rite?

near work place = shorter distance to work = more warm up cycle = more time spent on warm up. hence more petrol consumed due to more time spent on warm up.

 

far work place = longer distance to work = less warm up cycle = less time spent on warm up. hence less petrol consumed due to more time spent on warm up.

 

I still have apprehension about the fact that one distance is still further than the other.

It still leaves an unknown variable becoz the whole focus is on the total time taken for warmup.

 

Especially more on a dyno.

Why?

 

Insufficient cooling.

No dyno can replicate the actual cooling done by rushing air at a given speed.

 

One of the rules in hard break-in for bikes on a dyno is cooling.

http://www.mototuneusa.com/break_in_secrets.htm

 

Important Note:

Many readers have e-mailed to ask about the cool down, and if it

means "heat cycling" the engine.

 

No, the above "cool down" instructions only apply if you are using a dyno machine to break in your engine. The reason for cool down on a dyno has nothing to do with

"Heat Cycles" !!!

 

Cool Down on a dyno is important since the cooling fans used at most dyno facilities are too small to equal the amount of air coming into the radiator at actual riding speeds. On a dyno, the water temperature will become high enough to cause it to boil out of the radiator after

about 4 dyno runs. This will happen to a brand new engine just as it will

happen to a very old engine.

 

(Always allow the engine to cool down after 3 runs whenever you use a dyno.)

 

If you're breaking your engine in on the street or racetrack, the high speed incoming air will keep the engine temperature in the normal range.

(In other words, you don't have to stop by the side of the road to let your bike cool down.)

 

Thus why a proper dyno run takes at least half a day, if not full day.

 

Why is that important?

http://www.drivers.com/article/848/

 

Let your engine coolant be cool, but not too cool. Improperly mixed engine coolant can cause your engine to run too hot or too cool and can hamper fuel economy. The right temperature makes the car run more efficiently, so make sure your engine has fresh coolant in the right amount.

 

 

So a bike on the dyno spending more distance (time) on the dyno will have different heat factor, affected fuel efficiency. Higher or lower, we would not know.

A differing variable.

 

Instead, riding at the same distance but with differing warm times eliminates all other variables and keeps to the test purpose: whether total warm-up times affect FC.

Posted
only for the magneto coil casing the 400 is using plastic....the rest are ok..

 

here's the pic bro..

 

i really wonder if you are riding a GSR...

i have never heard of a bike using a plastic dynamo cover before...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...