Bobbing motion

Hi,

I too feel that my bike has bobbing motion (up and down) when i ride her between 4-5K.
No solution till date so in case you come across any, please let me know as well.

Ride Safe.

Regards
Piyush

Aargee, glad that you are safe.. Hope you can ride your bike this time (like what Dreamseller is doing) without keeping it parked in SVC till the parts arrive..

This is still a puzzle which no one is able to solve till now For my last refill i got 337kms range, my highest so far.. after which it consumed 10.51lts of fuel.. this includes 150kms of highway ride and rest all daily city commuting.. Before this i got 300kms range (highways only) for 9.75lts..

Must be the fairing clips thats causing the vibration.. Gonna check it out!

Tks; yes, I can ride not an issue; But certainly not in the nights with the entire fairing tilted to right.

And not to mention the fuel guage bars, which is purely a joke!!!

CBR's tank can hold 13.6l petrol.

is the head light badly damaged??

+million..
I forgot to mention this in previous post.. In that 337kms the fuel guage bar started blinking for the last 5 kms only

Totally agree with you aargee! The fuel gauge is completely misleading.

Yes completely broken & entire fairing tilted to right; but the bulb is not broken though. Let me examine & post them in the evening.

Shoots!!! Very risky to burn out fuel pump or is that also a joke

Going by your description of the incident, I feel the result has more to do with the upper half of the motorcycle than just the brakes here Aargee

Rear-ending a bus means a few things:

1. that you were following it placed not to a side but somewhere in the middle. Such positioning leaves braking as the only available option. Place yourself more to the left or right and you can steer past a little while stopping.

2. a bus doesn't go all that fast within the city precincts (I am assuming that you were not on the open road but within the city). And a modern motorcycle equipped with disc brakes, good tyres, on dry tarmac and with a skilled rider can out-brake almost every other vehicle on the road at least till speeds around 60 kph. That you couldn't out-brake the bus meant you were too close to it. Or not paying enough attention.

About the bike:

I don't believe there's anything fundamentally wrong with the CBR 250's brakes except for the fact that it has a soft front suspension. This has a major effect on the way a rider panic brakes on it. The excessive front end dive is not only disconcerting but also alters the geometry of the bike rather quickly. Also, since we tend to measure the magnitude of forward weight transfer from the rate at which the front forks get compressed (and remember that more weight on the wheel means better braking), too rapid a compression of the front fork will let the rider believe that he is braking really hard when its actually just a little more dive and there's more braking possible yet. So inadvertently a rider not alert to this difference in the bike's behavior will tend to under-brake i.e. will not be able to push the bike close to its limit during braking. And this again puts the onus for the incident on you. You as the rider are supposed to really know the bike rather than ride it on the assumption that Honda 'should' have provided it with sharp and more effective brakes. Exceed the bike's performance envelop and it'll make you pay for it.

PS: Of course all my inferences are based just on what you'd written in your post. I did not witness the incident and so could be wrong.

ok..

I am aware of that.. Actually I was waiting for the fuel guage bar to start blinking (sign of low fuel level) before I refuel.. To be precise I was doing a small check on the range, after filling fuel from a different fuel station..

As per the manual, the blinking starts when there is 3.5lts of fuel left in the tank.. Correct me if I am wrong..

Let me explain the scenario clearly with a pic below.



This is road going from Guindy to Adyar in the morning around 7:00 AM, where all the buses almost fly ; I sometimes find it hard to overtake them even with my Rx & you got to trust me on this.

From the pic...I was in a more than comfortable distance from the bus when I started noticing everything. As I was behind the CRV (say about 30-50 feet), I'd already in sync with the speeds of bus & CRV, that is the bus guy started braking very rapidly; All I knew was I'd to brake hard & I did that; I can very well remember those times as it weren't micro seconds, but a good 2-3 seconds. I also remember that my rear had locked up & may be the front too, probably when I'd neared the bus. The impact could've been just in 20-30 Kmph because I didn't fall down OR the bike tilted to right or left; infact I could've simply walked away for the very reason that, the driver of the bus came down looking for the person who banged his vehicle & I was just standing next to him & until I called him & told him that I was the one, he didn't even recognize that I was the one.

There're 3 broken parts, the front mount where the mirrors are mounted; the headlamp assembly & the collar cowl that connects the left fairing & the headlamp assy. The number plate is visibly bent; have lost a spot of paint from the front fenner in about 1Re coin in size & due to the broken left collar the entire fairing is tilted toward right.

I'll also show you in a while as how much the front disc pad has worn out around 500 Kms & 2 weeks.

Sir, first of all, I don't mind who's right or wrong, I'm more than willing to accept with a open heart if its my mistake, because I firmly believe that, without being open, I CANNOT learn on my mistake & if I don't learn, I continue to make the same mistake & needless to say who commits the same mistake more than once I consider this as a good opportunity to learn, so feel free to say your thoughts

Edit - Sir, here's the present condition on disc pad that was replaced in the last service & taken out from ASC on 11-Nov; ofcourse, I use more front than the rear brakes.


And this is for the rear brake


Sir, pls tell me frankly, would this kind of wear our happen in just 550 Kms? On my Rx (yes, its old technology, but certainly not the disc brake) it lasted for 23K on ODO before wearing out completely. The present one is Gladiator assy & I've done close to 300 Kms & still its tight. Again, the way I ride Rx & C250R is the same except on the speeds.

Fully agreed Sir; I partly take the blame & I don't completely blame HMSI for it; I should've either stayed more cautious OR just knock it off calling accidents happen.

But I'd just this one thought - if the engineers in Honda design a bike to run at speeds of 140 Kmph (not the top speed), running at 100/110 should give fairly advantage to the rider. And this is one a beautiful, highly friction dry, clean laid down tarmac. I could be assuming, but, I'd rather say that my Rx with Gladiator discs give more confident on 80-90. Yes, the weight & power certainly differs & is not apple to apple comparison, but, can't help thinking that way!!!

Sir, I fully agree & this is what I do & without clear vision in the front I don't take decision, but just merely follow. But today I was locked by the CRV & median & I was actually waiting for CRV guy to overtake the bus & before that everything happened

I'd suggest not to use the "squeeze the front brake lever continually at least 2/3 times/sec" method. It can be very dangerous, contrary to popular belief. And if you are trying to emulate the ABS, please do note that it does that action with a different intent: not to let rolling friction get equal to sliding friction. It's virtually impossible to emulate that. I could go on, but there is a different thread for this, with far more info that I can provide.

P.S. Your Sparx looks good

Got news of your latest misfortune quite late as I was held up with other more mundane commitments. Anyway, glad to hear things are not too bad.

I did, works alright. Although, still not able to do a rolling stoppie, but I'm no pro at stunts either. By the way if your brakes are too spongy, you know where the air bubbles are hiding!



Couldn't agree more. The 6th bar in the fuel gauge is probably there for just an item number/special appearance.

Works the same for me. Generally after the last bar starts blinking, it takes in about 9.65-10.24 ltrs of Speed/Power.

I wish Honda brings a naked model based on the 250R, soon, so that I can be inspired to follow that. Tired of telling the insurance guy that I'm yet to recieve my parts and he may go ahead with a fixed deposit of the amount he owes me till I'm waiting.

@Old Fox: Beautiful explanation there.

On another note, I remember the article you had posted wherein we are supposed to focus on exit routes rather than the object of obstruction.
I made the precisely same mistake-kept staring for 1.5secs.&banged into a pedestrian crossing from the divider!
Got a broken headlight cowl but lesson learnt.

OT: OF Sirjee, one small query on the quoted part- Shouldn't we ideally avoid body weight transfer onto the handlebar, thus at the front, while normal/panic braking?

Yes bro you are right. But squeezing in terms means just a gentle 'tick tick' on the brakes only. One thing i noticed/comparing with FZ16/R15 with CBR is that the engine breaking is really less comparing the others. We must completely depend upon the brakes even at slow speeds on CBR. With the more added weight to the CBR when i release the throttle the bikes don't try to brake itself which once i almost rear ended an autorickshaw. After that incident i always brake more early which i didn't do on my FZ16.

P.S thanks for the complements