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benmc

Joined:

Feb 09

Posts: 24

benmc says:

New Chain/sprockets = better mpg?

Hey, 


I've just had the chain and sprockets replaced on the blade and seem to be getting more miles to a tank.

The way I see it, one of 2 things is happening: 

1. My reserve light is broken
2. Having new stuff on the bike means it's more efficient, which means I'm getting better mpg. 

Normally the reserve comes on around 120 miles, but I managed 135 ish before getting to a petrol station (still without the light coming on) - I haven't had a chance to ride round and round until the light either comes on or the petrol runs out yet, so I thought I'd have an ask on here first. 

So, should having new chain and sprockets mean better mpg?

Cheers in advance.

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  • Posted 346 days ago (13 May 2013 17:25)

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Arthurshandy

Joined:

Mar 13

Posts: 26

Arthurshandy says:

Chain losses

Hi


Yes. 

Would it be noticeable?

Maybe it would be noticeable on a powerful bike.

The efficiency difference between a nice new chain/sprocket set (ain't that a nice feeling, while it lasts?) and a shot set could be maybe 3%. 

That doesn't sound much difference, but 3% of the power kicked out by your blade is, oooo, .... noticeable.

Depending how you use the bike it might be around 3 horsepower wasted, spread over the distance to refill, that would burn more fuel. 

I wouldn't have thought you'd notice quite the difference you have said though. Not unless you literally cane the thing everywhere.

Did you change the ratio?

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benmc

Joined:

Feb 09

Posts: 24

benmc says:

standard ratios

It's all honda standard equipment so the ratios haven't been changed. 


You're right about how nice the new set feels, I thought the old one felt ok until I got the new one on! 

I was thinking it was a bit of a jump in fuel economy. I don't really cane it, but unless I'm on a motorway I'm not usually using any higher than 4th maybe 5th - rev-wise I'm not even halfway to the redline (even in a national limt..). 

Maybe I should just ride round and round til it stops! 

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Arthurshandy

Joined:

Mar 13

Posts: 26

Arthurshandy says:

Economy mystery

As far as I know, an x ring chain is more efficient than a standard o ring type. Also, a chain with hollow pins and high quality lightweight links will have less inertia and so accelerate with less power, but I still find it hard to believe that all this would show itself as the significant difference you mention. 


Interesting stuff though.

You not put carbon wheels on? Different tyres? A following wind? :)

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benmc

Joined:

Feb 09

Posts: 24

benmc says:

following wind

I'll go with that I think!

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Arthurshandy

Joined:

Mar 13

Posts: 26

Arthurshandy says:

Wind assisted blade.

Quote:   "

following wind

I'll go with that I think!"


Ha. The simplest explanations are usually the best.


Cheers.


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