17 Teeth , Help
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Thread: 17 Teeth , Help

  1. #1
    Senior Member BrutusFureus's Avatar
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    17 Teeth , Help

    Thinking of going up 1 tooth from standard to see if it makes much differance to miles per tank.
    It's a SHITE way of saving dosh but at this rate the f***ers are gona drive us off the road due to rising fuel costs.
    Any one know of a seller for a renthal front sprocket that fits the bill .. 17 tooth.
    Cheers Dave

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    kerbmonkey's Avatar
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    Re: 17 Teeth , Help

    just about to go down that road myself regards front sprocket.

    try these guys / go to home page type in bike model year it will come up with every thing for CB


    http://www.sportsbikeshop.co.uk/motorcy ... ;all;B1671)

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    Super Moderator lardy's Avatar
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    Re: 17 Teeth , Help

    Quote Originally Posted by BrutusFureus
    Thinking of going up 1 tooth from standard to see if it makes much differance to miles per tank.
    It's a SHITE way of saving dosh but at this rate the f***ers are gona drive us off the road due to rising fuel costs.
    Any one know of a seller for a renthal front sprocket that fits the bill .. 17 tooth.
    Cheers Dave

    Surely you would be better off keeping the rev's down instead. Going up a tooth will in theory give you a higher top speed but thats no good really is it. Just keep it in top and keep the revs down its the only sensible way I would have thought when you got a bike that can break the uk speed limit in first gear.
    Take a look at 'My Little Demon'

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    Senior Member BrutusFureus's Avatar
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    Re: 17 Teeth , Help

    Quote Originally Posted by kerbmonkey
    just about to go down that road myself regards front sprocket.

    try these guys....http://www.sportsbikeshop.co.uk/motorcy ... ;all;B1671)
    Thanks for that mate, worth a try i think, Every little helps . Insurance premium . UP, Rising living costs,But funnily enough
    no mention of wage increase.. Unless ur a POLITICIAN ..

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    Senior Member BrutusFureus's Avatar
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    Re: 17 Teeth , Help

    Quote Originally Posted by lardy
    Quote Originally Posted by BrutusFureus
    Thinking of going up 1 tooth from standard to see if it makes much differance to miles per tank.
    It's a SHITE way of saving dosh but at this rate the f***ers are gona drive us off the road due to rising fuel costs.
    Any one know of a seller for a renthal front sprocket that fits the bill .. 17 tooth.
    Cheers Dave

    Surely you would be better off keeping the rev's down instead. Going up a tooth will in theory give you a higher top speed but thats no good really is it. Just keep it in top and keep the revs down its the only sensible way I would have thought when you got a bike that can break the uk speed limit in first gear.
    Agree to a point mate ,, But.. If i,m doing say? 80mph on the motorway for 100 mile .. wouldn,t it make more sense
    to reduce engine rpm and there for reduce fuel consumption in the process..

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    Super Moderator lardy's Avatar
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    Re: 17 Teeth , Help

    Have you ever tried the website (gearingcommander) tells you what speed etc you will be doing at what revs with your bike and which gearing you choose, Its a good site. es you are right that if you were in top doing 80 for 100 miles and had a larger sprocket then yes you should do more to the gallon.
    Take a look at 'My Little Demon'

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    Senior Member LATE's Avatar
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    Re: 17 Teeth , Help

    Always get my chains and sprockets from B&C express http://www.bandcexpress.co.uk/skufilter/

    dont forget fitting a different sprocket will throw your speedo and odo out, so you'd be wise to fit a speedo-healer

  9. #8
    sam
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    Re: 17 Teeth , Help

    Why did you buy a naked, nimble bike if you regularly sit at 80 for ages in a straight line? Buy a cheap faired plodder and save the cb for tank supping pay day White knuckle fun!!

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    Senior Member clem71's Avatar
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    Re: 17 Teeth , Help

    Believe me, I ride often with BrutusFerus and we use the NAKED as a NAKED should be. He's on about saving a few bob througout the rev range, it all helps at the end of the day.

    Quote Originally Posted by sam
    Why did you buy a naked, nimble bike if you regularly sit at 80 for ages in a straight line? Buy a cheap faired plodder and save the cb for tank supping pay day White knuckle fun!!

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    Senior Member Merseamudboy's Avatar
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    Re: 17 Teeth , Help

    Trying to save fuel by reducing the revs may not be your answer. If it makes the bike slightly less responsive in acceleration you may use greater throttle openings to get the same performance - back to square one.

    At a steady 80 it will depend whether the engine runs more efficiently at the reduced revs or not. If it does you'll save fuel, if it doesn't you won't. Just running lower rpm won't save fuel per se. If the engine is less efficient you'll need larger throttle opening to maintain speed.

    Worth a try perhaps. As for top speed, increased ratios can reduce top speed too if the engine can't pull the gear.

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