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Apache Racing Experience (ARE) Mumbai experienced by Motoroids - Motoroids.com

Thanks for clearing the doubt. I will be going with a 1litre bottle of Veedol at the next service then.

Brake OT, fade and mufflers

@Pritish and Renny

You're both correct.

Technically, there IS a minimum operating temp for discs and pads (no i haven't measured it ). Below this temp, like when the bike and disc is cold, the bite is grabby and very evident even in the RTR.

However, Pritish, you're making too much of a deal of it. This OT is reached, and exceeded, very quickly. Like in 3 seconds or 10 metres of braking. After that, the constant friction of the pads on the discs keeps it at the OT. Without even having to touch the brakes. Which is why Renny says it's a non-issue.

However, overheating is a BIG issue. even with the petals, the optimum OT is easily exceeded in the rtr by an enthusiastic rider. I had serious brake fade issues, since i brake 100% front (taper actually), hard and late. This was resolved to a great extent by switching to DOT4 fluid because i identified my brake fade to the fluid overheating.

And there's really no point talking about cutting edge tech like carbon and ceramics when we're stuck with iron discs in our rtrs. Heck, they're not even floating. And CFD will not apply to our bikes, the damn brakes are just out there in the open, there aint much you can do to cool em further.

@Shivank and Renny

A muffler is a noise reducing device at the end of an automobile exhaust system. Literally, it muffles the sound. Also called a silencer. The problem is that colloquially, we use the terms silencer/muffler and exhaust-system interchangably and incorrectly. An exhaust system without a muffler or silencer could be called a free-flow exhaust.

So Shivank, when you say you "changed my RTR's muffler", to a motorcycle technician, it would sound like you cut the exhaust pipe where it meets the silencer and welded a new one on. However, since we know its easier to change the whole damn thing because it's one piece, saying you changed the silencer, which is what we call the exhaust system in India would have avoided this whole topic.

And Renny, FFS, why pick on the dude for saying muff-fukking-ler. I know it's too hot to ride these days, but seriously man .....

This reminded me of one guy arguing with me saying that 2-strokes don't use expansion chambers (he kept calling them diffusers) only 4-strokes do. All i could do was

Me, i'm just pissed i missed the ARE...

p.s. the correct way for a pillion to sit on a sport bike is grabbing the tank. On the rtr, this may not work if the rider is extra large and the pillion extra small because the bars aren't set low enough. but this avoids the whole pillion braking mess.

p.p.s @Satish ASK pads and similar cheap(er) pads will eat up the discs. Had a bad experience with the cbz. However, with original Nissin pads first at Rs.850, then 1250 then 1400, it's now probably cheaper to buy fake pads and then replace the disc too with a tata-yukita rather than nissin when the pads eat the disc. But between rtr ogi pads and ASK, for a 200 rupee diff i would save my disc and avoid ASK.

I have experienced the same on a set of repeated twisties too, the front fades real good but after riding for 500mtrs to 1kms without tapping it it comes to normal, rear though fades too much that it feels there are no pads at the calipers.

Answers in their respective colors...

+1..exactly wat i was trying to xplain.

i know...i was trying to make it a point that OT exists...how low it may be.

I completely agree to that...

i was just giving an example of OT for brakes

i know...

+1

Yeah...me too have exprienced the same...so i try to use the front a bit more ,cautiously tho ...

Sorry dude for calling it muffler!
Didn't know that guys here take the literal meaning of each and everything and beat the s**t out of it!
And for arguing on the same,I hope this term is used in automotive world umpteen times and because someone calls helmet a lid doesn't mean that he's only talking of the lid!

C'mon man, aint no biggie. and you don't have to apologize to me, i was just pointing out why the topic started in the first place. And good point about lids.

Anyway, anyone have any adverse reactions to the heat? i mean your 180s.

If you felt offended with my previous post,I apologize.While reading it again it sounded a bit tame..I was f**ked-up that time as I debated on Apache v/s R15 with my friend!

About the heating issues.As I reside and ride in Delhi so I've no major issues of overheating in my bike.Surprised Na!!..Actually,it's my asses that are on fire these days so have little time to look for bike...!

Julian and Pritish have already said most of what I wanted to say but thought I'd add in my 2 paisa

Renny, as Pritish, I and Julian have said in previous posts there is an operating temperature for brakes and it depends on the material used. For SS and iron (I didn' know the Apache rotors were iron, thought they were SS!) the operating temperature is low and its not much of an issue reaching OT.

Pritish, in addition to its light weight carbon-carbon brakes have much better stopping power because it has a higher coefficient of friction, once it reaches its OT. That's another major reason why they are used. When you wan to stop from 200-300 kmph to 50-100 kmph in a distance of 100-150 metres you need all the stopping power you can get! But then there is the problem of reaching OT and that's why there's the warm up lap to warm up both brakes and tyres.

However the problem of high OT required for CF is an issue in wet weather that's why MotoGP riders use SS rotors in wet weather.

+1 for that. Here's a paragrah lifted from 404

Umm, again I must repeat that's it's a non-issue to the point of not needing to be mentioned. The OT is maintained simply by riding the bike, even the non-engaged pressure of the pads on the disc is enough to warm it up. And for the initial OT, I reach mine in like the 50 metres from my building to my society main gate so again that's a non-issue.

I'll bet you anything that the warm up lap is more for tyres than for the brakes. Even in F1, the speeds are high enough for the brakes to reach their OT in like under a second. You will know when you see the glow.

As you've rightly quoted, brake cooling is the most important factor both for F1 cars and our RTRs. Which is why Renny was 100% correct in saying that there is no OT for our RTRs at least. But there is a huge problem of overheating, atleast for the aggressive riders.

Lemme make it clearer. Say you're cruising on a dead-straight highway and you haven't touched the brakes for the last 15 minutes. A cow suddenly decides to cross your path. You brake hard. What happens to the required OT then? It's already at it from the static friction. So why mention the need at all?

Yes it is.
Always.


+1
Good point taken.

Nice Discussion, Guys.Carry on!!

Well i just wanted to know what is the typical brake-pad life for the front and the rear of the 180!!

Swagat, the new video(in your signature) which u uploaded is awesome dude...!! Those timings were just insane..

Btw, check this too..RTR 180 tops at 131-132 ..

YouTube - APACHE RTR 180 at 132 top speed!!!!!