Optimum MPG chain sprocket sizes?

Cog size chain sprockets for extra MPG?

Well... it is a little more complicated than all that.

If you spend a lot of time on the motorway you could try increasing the size of the front sprocket and/or decreasing the size of the rear - this could have the effect of reducing the engine revs at a given speed. 

Unfortunatly this is where the complicated bit comes in - if that reduction in revs caused by changing the final-drive gearing means that you may have 'moved' that speed down the torque curve which:

1.  You may not be able to reach (say) 80 mph in top gear and will have to use a lower gear, which may have exactly the opposite effect (and use more fuel).

2. You may end up travelling faster than you intend, also using more fuel.


People have successfully changed the gearing, but there isn't any easy route .to a better mpg

Hi and what he said !

Look at the forum, try here, http://www.cb500club.net/t1888-any-tips-for-frugal-riding.

Not fancy an intro then? Where you ride, what roads etc that sort of thing affects economy. Cb5 is pretty frugal whatever you do.

m1

Thanks for that very helpful. I read the frugal tips also enlightening, I am returning about 65mpg so it seems about as good as it gets. One thing I point the long piece of the fuel tap down and around 200 miles I re-fill - is this the reserve position? very confusing as I don't want to run out to test it. I have a Haynes but it does not tell you in there. Regards Peter

Down is normal, up is reserve and horizontal off. It is worth practicing moving from standard to reserve while on the bike, that way if the engine starts to splutter because there is no fuel you can switch to reserve on the move.

Beresford wrote:

HomeBrew wrote:Down is normal, up is reserve and horizontal off. It is worth practicing moving from standard to reserve while on the bike, that way if the engine starts to splutter because there is no fuel you can switch to reserve on the move.

 If you are riding in heavy traffic, this is maybe a lifesaver.

 And don't forget to flick it back to normal when you fill up!!

Mines is solid and impossible to do it on the move, need a pair if pliers to do it.

Hi Friends - I have found this information very useful. I have only had the bike for 3 months and I love it. Its a keeper (using an Americanism) I am 64 now and having had many bikes over the years this is the first time I have owned such a complete motorcycle. Its fast, comfortable and frugal... About that, I had the tap down on the first half tank and switched the tap up to the top when it ran out - giving me enough to get to a garage. I then filled the tank and reached 230 miles and worried that the reserve was the other way round so I filled it again. This time it reached 273 miles and still it did not need to switch to reserve so I thought it was up... On this occasion the tank took 17.1 to fill that is why I thought I had got it wrong. This equates to 73 to the gallon!!! is this possible, I do ride very carefully with no hard acceleration and not above 60mph even on the motorway on my 40 mile commute. I will keep you posted on the next tank full and when it eventually switches to reserve. Cheers

Pedroroberto wrote:......I do ride very carefully with no hard acceleration and not above 60mph even on the motorway on my 40 mile commute......

 You must have the patience of a Saint. I cane the nuts off my 95,000 miler and get high-50s mpg.

Pedroroberto wrote: I am 64 now and having had many bikes over the years this is the first time I have owned such a complete motorcycle. ... I do ride very carefully with no hard acceleration and not above 60mph even on the motorway on my 40 mile commute.

 I'm glad to hear you like the CB5 - we like it too! (you probably guessed that)

I think you may have cracked the economy thing - very careful riding and don't go too fast.  Given how well the CB5 goes, it is often easier said than done!

Give the mpg figures you are getting it *may* be possible to get more, but it may not...