All 650's Vibration?

[Jonathan]

It might be a placebo effect but I noticed a dramatic difference in my old CBR650 when I replaced the standard exhaust system and air filter.

The engine breathed and flowed better. It was significantly smoother and ran better as well as returning better mpg and mid-range acceleration.

 

[ADIOS600]

I cannot justify £750 for my favourite exhaust.I have a k&n fitted and it's more harmonious.AS the bike is almost faultless on the fueling I do not know wether it's worth considering a pcfc without a can.I wouldn't change the exhaust for a reduction in weight alone.We will keep riding and see what develops.

 

[ADIOS600]

Has anyone weighed a standard exhaust.

 

[ADIOS600]

I agree with Jonathan the triumphs are well pricey.

 

[StephaneCBR]

I did a ride with earplugs the other day (I usually listen to music so no earplug) and my hands got numbing and was not doing that on my usual rides. I found out, since I dont ear the engine that much, that I was riding at a lower rpm and these lower hz vibs were giving me troubles. Anyway, did not liked the ride without music so I went back to no earplug the next ride and was ok with my hands. I think the vibes will always be there on the bike, just need to know what freqency of vib fits you !

 

[ADIOS600]

Its funny we are all different, i cannot ride without earplugs and ride slower with no earplugs in ha ha. But what I did find was when I fitted the Honda meter visor the bike was smoother and my little finger did not get numb like it usually does,i think because I am not holding so tight now. yes I think vibes will always be there,on a good day I do not notice.

 

[ADIOS600]

Anyway stephane are you the guy that gave the link for workshop manual.?

 

[Jonathan]

Its funny we are all different, i cannot ride without earplugs and ride slower with no earplugs in ha ha. But what I did find was when I fitted the Honda meter visor the bike was smoother and my little finger did not get numb like it usually does,i think because I am not holding so tight now. yes I think vibes will always be there,on a good day I do not notice.

I came to work on the bike today... 45 miles mainly motorway... no issues.

 

[StephaneCBR]

Anyway stephane are you the guy that gave the link for workshop manual.?

Yes

 

[ADIOS600]

Well i would like to thank you personally for that link, and I would say that goes for everyone on this forum. Its odd that i spend all this money on my bike and am too tight to buy a workshop manual lol. Well I was considering it to be fair.

 

[ritches]

Has anyone weighed a standard exhaust.

If I remember correctly, its about 13 kgs.

 

[Drewster123]

It might be a placebo effect but I noticed a dramatic difference in my old CBR650 when I replaced the standard exhaust system and air filter.

The engine breathed and flowed better. It was significantly smoother and ran better as well as returning better mpg and mid-range acceleration.

It's strange with my two brothers exhaust it seems to he smoother with the baffle removed and also it feels more responsive compared to when the baffle in in place

 

[DeakinDoug]

I experience a similar seat vibration at between 4,800 - 5,200rpm. It’s a 2016 model, bought recently, with 15,000km on the clock so it isn’t a running-in issue. Going to have a look at the chain...

 

[miweber929]

I experience a similar seat vibration at between 4,800 - 5,200rpm. It’s a 2016 model, bought recently, with 15,000km on the clock so it isn’t a running-in issue. Going to have a look at the chain...

Start with you obvious running gear, as you said the chain, but also look at sprockets, rear wheel alignment, etc. to rule out running gear feeling like something else.

Then move on to retorquing all engine mount bolts, be sure you don’t have one missing, loose or replaced when sliders were installed. If they were, remove them and see if that helps. Same thing with the bars: be sure the factory bar end system is in place and all connected, also that your steering stem bearings are in good shape and not loose and the handlebars are tightened and torqued correctly. Lastly, check your exhaust, is it stock? If not, could be that not being mounted correctly or a harmonic with that.

The inline 4 by nature can be buzzy unless it’s tamed or isolated. Honda is usually very good at that, at times this bike has not been. Let us know what you find.

 

[RoadSafeRider84]

The bike had done 5,000 miles so well run in now.
the vibes were coming through the seat rather than the handlebars.
I have to admit that I haven't owned an inline four for several years now having owned triumph triples more recently.
my last four was a CBR600 but that was ages ago...can't seem to remember any obvious vibes though?
Also the demo bike I rode didn't vibrate so much but it did have a VERY nice Yoshi full system fitted to it!

How do you find this bike to the triumph triples? I very nearly brought a street triple r but the garage made going for a test ride extremely hard work. Ever since I've always wandered how they compare. Tah

 

[baugustine]

@RoadSafeRider84 this review is pretty fair on both bikes

 

[RoadSafeRider84]

@RoadSafeRider84 this review is pretty fair on both bikes

Thanks Baugustine, will have a watch of that abit later! 👊👍👌

 

[darupe86]

Hello,
What do you think about the following article, specifically in what it says here:

REVIEW | Honda CB650R (2019)

Uprated, tuned and refined for this year

www.bennetts.co.uk

"And it’s smooth in terms of vibration too: a complaint levelled at the old CB650F motor was its high-pitched buzzing through the bars and pegs at a cruising 5000-6000rpm. This is secondary vibration, and it’s caused by the differential in non-sinusoidal piston motion inherent in crank geometry. It manifests at precisely the right frequency in inline four engines (at around 5000-6000rpm) to sometimes cause a condition known as ‘white-finger’ – where blood is drained from the extremities, usually fingers, causing tips to go white and a burning sensation, or numbness. Lots of riders will have experienced it to some degree.

The usual solution is to include one or more balance shafts or gears in the engine design – literally, a tuned counterbalance gear driven by the crank and spinning in opposition to balance secondary vibration.

But some engines don’t have them, and the CB650F motor is one that doesn’t – which is why it buzzed enough to annoy some owners. Solutions that don’t involve redesigning the motor are a bit Heath Robinson, but can be effective. They include rubber-mounting handlebars and footpegs, or even filling the hollow handlebars with hard-setting foam. If you own a BMW S1000XR, you’ll know all about it.

Or, in the CB650’s case, Honda’s fix is to change the engine’s top rear mounting points – which is, after all, how some engine vibration gets communicated to the rider. The old motor was directly bolted to the frame, on each side. The new CB650R hangs off hanger plates instead, isolating the engine more effectively than previously."

 

[Enrico]

Well, all I can say is I don't notice any high pitched buzzing vibration through the bars or pegs on my 2018 CB650F. I take my hands off the bars when riding occasionally to stretch my fingers as on any bike.

 

[Sajben650R]

I did a writeup on the forum called Handlebar Silicone Injection. Check that out. Helped me a lot with vibrations.