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Maintaining road speed on a low capacity bike

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cbrtrxtdmvfrD...
Borekit Bruiser



Joined: 09 Mar 2013
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PostPosted: 16:09 - 07 Jan 2014    Post subject: Maintaining road speed on a low capacity bike Reply with quote

I started to ride a CBR125 to work after rescuing it from a clueless owner leaving my big bike in the garage due to the engine casings suffering from December’s road salt. Its OK, starts goes stops that sort of thing and I don’t have to bother washing it regularly which is a bonus. I accept the fact it’s a 125 so my choice, it was cheap, I was in the right place at the right time and I knew it wasn't going to be the fastest thing in the world - but I actually really enjoy riding it. Maintaining speed in the corners certainly teaches you to take the best line and I’m sure that invaluable lessons are subconsciously being learnt here somewhere. Anyway I've digressed slightly, my question is – it does reach an indicated 70 on the clock, but I do not need it too. The road I daily use is a combination of 40 and 60mph limits, most vehicles on that route (and I’I've been doing it a few years now) manage a steady 50 to 55 and yes shock horror I’m glad to tootle along in the same manner, which leads to the thought of reducing the front sprocket by a tooth (or two) and increasing the rear sprocket by a ? – The reason? - I just want to maintain and hold this lower road speed. I know people want to generally make their bikes go faster so has anyone had any experience of making their bike go slower to hold speed on inclines or headwinds for longer and does it work?
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garth
World Chat Champion



Joined: 15 Dec 2004
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PostPosted: 16:27 - 07 Jan 2014    Post subject: Reply with quote

Just use a lower gear and keep the more relaxed cruising speed once in top.

I like slow bikes. I especially like shit slow bikes that don't really go round corners well, with bouncy suspension and shit brakes.

I don't really know why.
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cbrtrxtdmvfrD...
Borekit Bruiser



Joined: 09 Mar 2013
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PostPosted: 16:34 - 07 Jan 2014    Post subject: Reply with quote

i must be suffering from too much Christmas cake overload - that's the perfect answer, no idea why i didn't think of it but cheers and it costs me nothing to do too!
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stevo as b4
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Joined: 17 Jul 2003
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PostPosted: 18:35 - 07 Jan 2014    Post subject: Reply with quote

The old Honda CG125 I had, would rarely indicate much over 62mph on the flat, but then even up hill it would always hold 50mph in 4th or 5th depending on how steep and or windy it was.

It was fine on the motorway for short trips (20miles) and it's nice not having to rotate your right hand forward at all for an hour or so!

I'd possibly try a -1t front sprocket if you feel your struggling to maintain 50-55mph, carrying a lot of weight, and or if you live somewhere hilly like parts of Devon/Cornwall.
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stinkwheel
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Joined: 12 Jul 2004
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PostPosted: 18:54 - 07 Jan 2014    Post subject: Reply with quote

Yes. Went up a tooth on the front on my Enfield and my standing quarter time went up by two seconds and top speed went down by 5mph. I put it back to how it was.

So yes, gearing down can in some circumstances make you faster overall although I feel if I were in your situation, I'd just be blowing past everyone at my 60mph top speed. I'm not one of natures queuers, if I come up behind someone, I'm looking to pass them, regardless of how fast or slow my vehicle is.
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I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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Walloper
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Joined: 24 Feb 2005
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PostPosted: 20:40 - 07 Jan 2014    Post subject: Reply with quote

Riding the 125cc motorvelocipede to it's maximum potential is, as James Watt (Inventor and developer of the Steam engine) said, "A great example of Energy Conservation."
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