Re: Honda CBR 250R

Here is the screenshot of manual regarding bank angle sensor.

Re: Honda CBR 250R


i would agree to the statement also the manual however i have still seen a cbr running the starter motor even if leaned but not starting up. good to learn something new.
possibly 1 off case else i am wrong.

Re: Honda CBR 250R

I haven't experienced such things yet, hence the manual. The real issue might be off the book as you said you have encountered one!

Re: Honda CBR 250R

[QUOTE=theironhorse99;1226226]motorcycle wheels are way diffrent than car wheels. now coming to balancing. let me update a few basics here

wheel balancing for motorcycle wheels needs to be done at each tyre change.
how to find out what to do ? below are the pointers.
motorcycle wheels heaviest point is usually near or at the place where the air nozzle is out.
each tyre has a heavy point too and is marked by a small green or red dot and is mandate for each manufacturer to do.
when getting the tyre installed make sure that red/green dot sits oppsoite to the nozzle. 2 heavy points will create a balance.
when not done correctly these usually cause vibes, wobbling at high speed and also pressure on chain and sprockets.
these wobbles will also wear down your swirnarm bushes early due to lateral movement.

besides these there are weights as well which are used for fine balancing of the wheels. unlike car weights these sit in center rather edges. you would need to take the wheel out run on a manual or machines jig and fine balance it. youtube for manual balancing videos. there are many.


Well Did Check YT Video. What The Whites Say Makes More Common Scenes. When The Wheel Rotate The Whole Thing Rims Rubbers Move In To A Centrifugal Force So Should Use Manual Or Computerized Balancing Machine To Get The Weights Distribution Right.

Anyway Thanks For The Knowledge Of Color Dots Idea Never Heard Them Before Will Apply That While I Change To Metz.

Thanks For The Reply Mate.

One More Question I Have For You.

What Happens If I Overflow Engine Oil Lets Say While Top Up If I Spill Oil Above Max Mark But Not Crossing The Glass Itself. What Are The Consequences ? Will That Damage Oil Seal Of The Gear Sproket Or Will That Be A Performance Issues Coz Of Crank Hydrofoaming.

This Is For My Knowledge Only I Don't Have Any Such Issues.

Nice To Know You Mate.

Regards

Guru Kumar

Re: Honda CBR 250R

[QUOTE=Guru Kumar;1226242]
there can be 2 situations here.
crankcase sometimes has a breather pipe which accumulate the air movement of the piston and other moving parts else it will create reverse vaccum everytime the piston moves up else compress air while the piston moves down. either of the 2 will reduce the engine performance. now it might be the case in bike running with low rpm but longer strokes... example cruisers/ RE's.

now coming to over filling of oil
yes it can adversely affect the oil seals by creating more pressure when the parts move.
also the breather pipe might splurge oil if the pipe if there.

i would suggest for motorcycles like CBR which have shorter strokes to drain engine oil immediately and refill the correct amount of oil. always good to keep the optimal amount of oil.

Re: Honda CBR 250R

Well RE Breather Pipe Throws Away Excess Oil To Chain. Im Talking About Old Model RE Not The New Engine. As I Have A 16yrs Experience With It.

You Can See A Breather Pipe Danglin Just Behind The Side Stand Its The Red Pipe But Its End Is Closed With A Black Cap Kind Of Plastic May Be It Has Holes In It. Not Sure.

Like You Said Will Take Care Always For The Right Amount Of Oil That Is The Safe Bet.

Please Share If You Know. Does Changing To Yamaha FZ Oil Filter From Stock Filter. Creates A Load On The Oil Pump. As FZ's Are 150cc Oil Filter Where As CBR250R Is 250cc. Will The OHC Get Proper Of Oil Supply By The Pump If One Uses Such Filter.

Thanks For The Prompt Reply Mate.

Re: Honda CBR 250R

Byson filters that are used by FZs are not recommended but a cheap fix when compared to the OE Honda oil filter.



Check this thread, the user has used the filter and has gotten good results. Bigger the filter, better the filtration. It's completely a open thread with clear "Do it under your own discretion".

If you'd like to experiment it with once, go ahead and try it, lots of people use this filter, and have nothing to complain, a cheap alternative to the costly OEM.

@theironhorse99 nice info on the wheel weight balancing theory, appreciate it mate, refreshed my memory.

Cheers!
VJ

Re: Honda CBR 250R

Hi Aman,

As per my discussion with one of the MRF tyre shop from where I have changed the tyres, he said that the same machine(newer ones) that is used for balancing the car tyres can be used to balance two wheeler tyres. He said that there are options given in the machine to do, but a separate attachment needs to be mounted for fixing the two wheeler tyres.

He also owns a Yamaha z1, but he is unable to use that machine as MRF is yet to give the attachment and the necessary training to do two wheeler balancing .

Yesterday I called to tyrestore in channai for an enquiry about balancing tyres for CBR 250, he said Rs. 200 for tyre removal/fitment and Rs. 200 for balancing for single tyre. So that's Rs.800 in total. He said that I can also bring the wheels separately for balancing(tyre removal and fitment to be done outside/myself).

Due to this am now seriously considering dynabeads for tyre balancing, which will last longer and can be reused at my next tyre change too. But need to get it from US as its not available here in india .

Ram

Re: Honda CBR 250R

Guys I'm going into testing phase of my prototype exhaust, I know many people advised against it, but I thought wat the hell, it makes a major difference in traffic, wat you see in the picture is a temporary exhaust , based on it I'm making a better design and stainless steel exhaust, which will have a bigger mouth, and a muffler sort of material inside to decrease sound n increase power, I know im gonna get some flak but I'll keep y'all updated on the bike . Gonna use this exhaust for another 1000kms or soo and then pop back my stock n service it n by the time the bike comes back from service I'll put on my proper stainless steel exhaust, the current steel used is MS hence its a temporary scene .

Re: Honda CBR 250R

Dyna Beeds the basic idea is that instead of affixing balance weights to the exposed surface of the rim, you pour a couple ounces of ceramic beads through the valve stem into the tire before screwing in the valve core and filling with air; as your vehicle rolls down the road, these beads somehow "know" where to position themselves to counteract any pre-existing mass imbalance.

Or at least that's the party line. So far all the evidence I've seen supporting them seems to be anecdotal, and it's further blurred by the fact that a couple of friends don't even bother to balance their motorcycle tires at all, despite hitting high speeds at track, that suggests motorcycle tires may be pretty well-balanced to begin with, and so the fact that some people motorcycles ride smoothly with Dynabeads doesn't say much of anything about their performance.

Note that this product is also marketed for use in car and truck tires and they are claimed to be effective for lateral balancing as well as radial balancing. By the manufacturer.

My gut feeling is that they can't possibly work, but I'm curious to hear whether anyone has a rock-solid engineering analysis that says they can or can't, or any objective testing that says the do or don't work.

Re: Honda CBR 250R

Well Appreciate Move. On Making A Exhaust Your Self.

Mr.Deathwing Please Take My Suggestion. Check For The Required Back Pressure On The Exhaust Valve. The Company Specifically Designs Silencer To Maintain That Back Pressure Which Is Crucial For Valve Life And Fuel Economy.

Please Don't Run Your Baby To Death For 1000km And Burn Your Fingers. Instead Check What Is The Out Put Pressure Of Gas The Bike Is Giving At 5000rpm Then Take Custom Silencer Check For The Same Air Pressure. This Tech Check Can Be Done At Any Dyno Point Where They Fiddle With ECU Unit. Buy Doing This You Will Have A Wide Scope Of Modification Without Compromising Your Bike.

I Sincerely Appreciate Your Idea But Not Excitement.

Re: Honda CBR 250R

Have tried that already but didn't work. I gave it one last shot last night and it did start. After engine warm up, I opened the throttle a bit (around 4K RPM) and all went fine. I again revved it a bit and this time it did some hiccups and the engine again shut down and didn't start after that. Tried again this morning and the same thing happened- it started in the first self but after revving a little bit, it again did hiccups and shut down. I have checked all the relays that I could find after removing the side panels and they are all connected. Not sure what to check now.

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Hi Arvind
That's the first thing I tried but didn't work

Re: Honda CBR 250R

I get what you saying, but I'm not messing with the ecu as of now, gonna run stock, and u said run to death? I have already ran this exhaust before and faced no issues with the engine, even took it to my SVC , he was saying it was loud. The other ppl in the SC were very curious about my exhaust and even asked if I could make one for them lol, this is the 3rd time I'm running this exhaust. Anything with ecu I'm gonna do it in Bangalore, at race dynamics, spoke to them told them I want a ecu remap and mods for commuting and touring, they told me petal disc change, headwork, piggyback ecu , bigger cams,also bike will be tuned as per the exhaust I put on later, right now stock ecu is not gonna change,

Re: Honda CBR 250R

Well You Got It Wrong I Didn't Say Anything On Changing Stock ECU. I Meant You Could Do Your Valve Backpressure Readings At The Dyno Bangaluru Guys. They Just Have To Do The Reading And You Make Your Modified Exhaust Pressure Filters To Stay The Same As Stock And Be Einstein For Sound Department. If You Are Bored With Stock You Don't Have To Scrach Your Pockets Out Your Pockets.

Finally If You Are Happy I'm Happy. I Just Suggested That's All.

Re: Honda CBR 250R

Hi Reminder Did You Try Bypassing Your Negative Terminal To Earthing Point.

I Had Done This In My Bike Coz Of Inadequate Electric Supply This Happened And After That It Was Kaboom Every Thing Was Back To Normal.