Re: Honda CBR 250R

The CBR uses floating caliper which means the braking system of caliper and pads move whenever braking is done. The whole assembly is fitted onto a carrier plate which is bolted to the fork..If the floating mechanism is not moving freely then the brake jams....here are some you tube video to clarify this....the floating caliper pins need to be lubed with thin oil so that they can move freely...

Re: Honda CBR 250R

sir unable to PM you. says no space in your Inbox. tried reaching you multiple times on friday.

Re: Honda CBR 250R

Yeah, i am aware of the DIY part, have checked out the videos too, the thing is now the RAM mounts are actually available here in Bangalore in a shop for reasonable cost compared to importing it, so now i have the mount available but the stem nut is the problem. Do they still stock the old stem nuts or any other place to get one of those ?

Yeah..4.5 sounds good enough.


P.S: Why is the xbhp email notification still broken ?

Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

cbr clutch lever mount has a mirror mount that is closed. why not put a small mirror stem there and use GPS mount on it. the ones you get in market locally for normal handle bars ?

many notifications are broken. even the "like" and some other notifications.

Re: Honda CBR 250R

sorry...it is cleared now

Re: Honda CBR 250R

Are you thinking what I am thinking? Why not shave the dome off and see how it fares, either way, if it screws up, you can get a new stem nut. I mean yes, it requires some able hands, but why not try that, if you have trouble sourcing the nut. worth a try I guess.

Cheers!
VJ

Re: Honda CBR 250R

[MENTION=39214]B7ACKTHORN[/MENTION] [MENTION=32286]psr[/MENTION] sir and [MENTION=25760]theironhorse[/MENTION] , thank you for the advice! Will work with the mech asap tomorrow and keep this thread posted.

P.S: Would it be advisable to open up the calipers and clean/change the O rings as a DIY? The reason i ask is because, i'm a bit paranoid about the SVC now...

Re: Honda CBR 250R

there is nothing that cannot be done at home however Brakes are something related to safety. i would rather suggest you go to SVC and watch and learn and let him do the change for now. not working brakes on a running motorcycles is definitely not good..

there is nothing to clean the o-rings. they need to be changed. dust/oil pressure/ heat has killed them and hence the pistons are not moving freely when lever is released.

Re: Honda CBR 250R

and honda for some reason seems to be more interested (compared to other folks) in selling brake parts. I've had a few friends who went in with perfectly good brakes and after service they ended up with worn out pads. A cheap trick to make quick money.
As others have pointed out, get the caliper disassembled, cleaned, grease the caliper pins (since the cbr has a floating caliper) and also have the pistons removed cleaned and put in new seals. most of the times its just the sticky caliper due to the pins losing their factory applied grease.
Not sure if they sell a brake repair kit (usually called the 'minor' and 'major kit' .. available for the pulsars and few other bikes). these kits come with the necessary seals, pistons, etc (depending on the type of kit).
I would advice you stick around while they perform the repairs, otherwise head to some local mech and have it done. am sure the chennai xbhp members should be able to guide you to one. the most difficult part would be squeezing those pistons back in, so let someone familiar with it handle this job.

Re: Honda CBR 250R

Nah, going for the RAM mount, they are much more durable and i can reuse it too.
Can you help me out with the stem nut thingy ? If you have it there in the svc could you source one for me ? I have had not much luck in getting one here, the hollow type like in the older cbr's.

Cheers
Ride Safe
Krishna

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Not this time. I want ot go for a fresh piece, Just for the peace of mind, and between the office time and this i do not know where to go to here in Bangalore for all these kind of lathe type works, not knowing the local language doesn't help one bit.

Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

UPDATE: Bought the O rings, had the mech open up the caliper in my presence, as suggested, the o rings were kaput. They'd become a sad state like clay and were sticking. He took out the pistons, cleaned them, put in the the new o ring and the dust cover, fitted the caliper back, and changed the brake fluid. All in all, it saved me around 2.7K!
@psr sir, @B7ACKTHORN AND @theironhorse, i am indebted to all of you! Beers on me when we meet!







The caliper is back to shape now, tested over a small ride of about 4kms.
It has to be noted, while removing the old O ring, one must not use a screw driver or any tool that might damage the chamber. I'd advise ppl to use a toothpick or some sort of plastic pointy thing, to avoid damage. The SVC attempted to remove it with a screwdriver I stopped them and advised to use a toothpick. I carry some in my wallet all the time, lucky for me!

And as members have said in the previous posts, the SVC does aim to rather replace parts than troubleshoot them. When asked why, the mech stated that, that particular SVC was out of O rings, hence he'd been advised to change the caliper itself. I mean, WTF man! Something that can be done in a matter of 300 Rs., with labor charges, and you want me to shell out 2.7K?!

Only because [MENTION=25760]theironhorse[/MENTION] had explained clearly did i have the basic knowledge to tell him to try an alternative, and i sourced the O ring from another parts dealer, brought it to the SVC, made sure they did the job properly and took the vehicle back. This sort of behavior leaves a sour taste in my mouth. Damn you JSP Honda!

Re: Honda CBR 250R

told ya glad to help.....
my bad.. those are 30-32 and not 50-52 as i initially said.
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will check it tomorrow morning first thing and update you dude.
either ways its a 26-28 size nut. i don't think its gonna be an issue to find one.
truck/ bus part dealers will have those in bulk..

keep the original one and use the alternate however wait out for my confirmation if i can arrange an OEM one.

Re: Honda CBR 250R

I recently changed to Michelin's Tubeless not the Radial (My conti's were slashed because of massive nail and had to settle with what was readily available ) . On normal road its much smoother and you can feel the grip but rain its slides little bit not as good as Conti's .

Re: Honda CBR 250R

What's the difference in tubeless and radial?? Aren't the tubeless radial only?? Ie tubeless tyres are very strong, and strength comes from radial ply only, bias ply are for tube tires, so are Michelin's manufacturing both radial tubeless and bias ply tubeless??

Re: Honda CBR 250R

the Main difference is that the Radials make use of belts made of steel which help the tyre to firm and grippy under various conditions wheres as tubeless is just a rubber.
And Yes Michelin has both Pilot Tubeless and Pilot Radials.