Cbr600f mpg?

[bathwiggle]

Just a long shot really, got a 2002 plate CBR600F and i'm getting between 30 and 35mpg on it. This seems very low given that i'm just riding it to work, not ragging it everywhere and generally not going above 80 (most of the ay to work being dual carriage way)

Given this seems low, has anyone got any experience of riding one that they know the MPG of, or any suggestions as to why it's so low. On the sv it was between 50 and 60mpg, depending on if i was playing or just commuting to work.

Or do i just need to face up that it'll be cheaper to use my car to get to work?

Thanks in advance :)

[Sid Squid]

That's not right - is there a hole in the tank?

[bathwiggle]

Well nothing came out when i lifted the tank last weekend so i don't think so :D

but i've no idea what could be causing it to be this dire.

[kellyjo]

I get 35-40 from mine (98 ) and I dont go everywhere at silly speeds but I try not to bimble too much either :p

[AJC]

Hi, I have a 01 cbr600f sport which I only got a couple of weeks ago. Just did my first fill up and worked out the MPG, then came online to see this thread! heh

Anyways MPG worked out at 37.3 which I kinna expected - official figures I think are around 38-39. For clarity I havent really pushed the bike very hard yet (slippy/wet/salty roads innit!) but I have done about 6 short journeys through the city and the one longer one on A-roads.

I plan to keep a decentish record trying to note the way I was driving each time so i'll update this sometime...

[Dicky Ticker]

slurp--------:(

[yorkie_chris]

Go buy a ZZR600 instead.

OTOH check the carbs are balanced and the air filter doesn't have a dead cat in it.

[Springbokki]

Just a long shot really, got a 2002 plate CBR600F and i'm getting between 30 and 35mpg on it. This seems very low given that i'm just riding it to work, not ragging it everywhere and generally not going above 80 (most of the ay to work being dual carriage way)

Given this seems low, has anyone got any experience of riding one that they know the MPG of, or any suggestions as to why it's so low. On the sv it was between 50 and 60mpg, depending on if i was playing or just commuting to work.

Or do i just need to face up that it'll be cheaper to use my car to get to work?

Thanks in advance :)

I generally get circa 45mpg, maybe a bit less. Lowest I got was 35mpg, but that was being silly on the motorway (enough said).
I have found that riding long distance at around 70mph has returned 55mpg.

That said, I have a slightly smaller after-market rear sprocket fitted.

Also, being the inline four it is, trafficlight riding (no not racing away!) does drink fuel!
Do you do a lot of urban commuting?

[andrewsmith]

slurp--------:(

BBUUURRRRRRPPPPP!!!!

As YC you may have a resident in the airbox

[Dicky Ticker]

I know you have not long had this bike but it sounds like a bloody good service by a competent mechanic is in order.

[kellyjo]

Mines just reached 21k miles and not knowing much of its history Ive just had the carbs and valves done on it.The carbs were perfectly balanced, 2 valves were 'tight' (whatever that means :p) but apparently the most noticeable problem was the airbox which was absolutely filthy and clogged up :-(

[bathwiggle]

I've just swapped the air filter, but not ridden it since due to snow.

My commute is a pootle along a bendy road for about 8miles, no lights or stopping, then 6miles on the a12, then 40 roads with very little slowing down the final few miles, so no sitting in traffic.

And once again not in hte situation i can pay someone to service it having just had to do hte reg/rec. Sod's law my free mechanic is too busy at the moment. I'll see if i can sweet talk my parents into paying i guess :(

[Dicky Ticker]

Most modern bikes with shim valve spacing become tight after a period of time depending on the make and model,usually the service schedule for this is prescribed in the service manual[valve clearance reduced/increasd by shims resulting in the valve not operating as it should do, either to induct fresh air or to exhaust the engine gasses after ignition]I don't know if you have a manual choke on your model but if you have just check that it is fully disengaging as they can be a bit sticky in cold weather,knowing you have a clean air-filter is a good start.

[yorkie_chris]

Shims compression would surely increase clearance, in practice they tend to go tight, decreasing clearance. Due to valve seat wear not shim compression or wear.

Taking an example of the curvy intake, the valve opens 8.1mm or so, but the valve clearance being 0.1mm wrong would make it run like a bag of crap when hot. The valve in that case is opening more than it should... it is the fact that it is not closing which gives issue.

[Dicky Ticker]

Maybe I could have worded that better,clariyfing between shims and the distance the valve opens and closes as in the size of the shims used define this.

Note to one's self don't type posts after getting up at 4am

[Lozzo]

Bloody hell, even abusing my FJR1300 with regular bursts of 140mph I'm getting an average of 34mpg from it

[bathwiggle]

I've not even got to abusing her yet :(

[Dicky Ticker]

He doesn't mean standing cursing and swearing at it for using a lot of petrol;)

[bathwiggle]

:p

[instigator]

Doesn't surprise me, Honda seem incapable of making a decent bike with good mpg.

An equivelant ZX6R will easily get 50mpg on a commute, I managed to get a maximum 64mpg out of mine when I had to (still on the motorway). Suzuki GSXR of similar age (I have one) is only marginally better at between 40-45mpg. That's one of the reasons why I didn't buy a CBR because of their crap fuel economy.

[Mr Farley]

Doesn't surprise me, Honda seem incapable of making a decent bike with good mpg.


Had two Hondas as my last two bikes. The last one, my Honda ANF 125 was getting 150mpg, I kid you not :p.

On a seirous note my current 2003 Hornet (which uses an old detuned/carbed CBR engine) is averaging around 48mpg.

I would say you must be absoloutely caning it, or something isn't quite right :).

[bathwiggle]

Doesn't surprise me, Honda seem incapable of making a decent bike with good mpg.

An equivelant ZX6R will easily get 50mpg on a commute, I managed to get a maximum 64mpg out of mine when I had to (still on the motorway). Suzuki GSXR of similar age (I have one) is only marginally better at between 40-45mpg. That's one of the reasons why I didn't buy a CBR because of their crap fuel economy.

If it was the CBR600RR i wouldn't mind it being that low, but it's the F version. And i refuse to believe that my riding has changed that dramatically from the sv and the gsx600f that i've used to half the MPG

Had two Hondas as my last two bikes. The last one, my Honda ANF 125 was getting 150mpg, I kid you not :p.

On a seirous note my current 2003 Hornet (which uses an old carbed CBR engine) is averaging around 48mpg.

I would say you must be absoloutely caning it, or something isn't quite right :).
I'm working on the something isn't quite right as we all know (i don't think i've ridden with anyone so they can't argue with me) that i'd never cane a bike on the way to work... it's only work i'm allowed to be late :smt083

On the other hand i can't undo hte front sprocket to change the chain either so maybe i'm not meant to be riding

[NTECUK]

You should take the plundge and get the ECM checked for fult codes.
you should get 40 ish as you cant push the speed with this weather and traffic.
Engine temp sensor might be naff causing over fuleing???
What its costing you in Gas you make back in mpg saving when its right .
My cars better than your getting =:$

[AJC]

Okay update time now that I have done a few runs on the bike:

Litres Miles MPG
15.9 - 131 - 37.4
14.1 - 99 - 31.9
14.0 - 113 - 36.7
09.5 - 87 - 41.6
10.3 - 105 - 46.3
10.8 - 111 - 46.7

Basically shows a marked difference in city riding/commuting which the top 3 involved then proper run outs on the bottom 3 results. Combined MPG around 39.4.

All involved pretty spirited riding and speeds in excess of 90, I might give a real economy run a go sometime just to see what I can manage, but that would require determination and patience...

[SUPERSTARDJ01]

This guy is getting 46 mpg http://www.fuelly.com/driver/jcrawford27/cbr600rr

[AJC]

This guy is getting 46 mpg http://www.fuelly.com/driver/jcrawford27/cbr600rr

Not bad, but to be fair his bike is 10 years newer than mine and I also have to check my air filter etc...

Like that petrol tracking site though so I have signed up to it and filled in my fill ups so far, cheers!