Odometer question
Odometer question
Hey folks
Finally got round to fitting my +2 Tooth rear sprocket yesterday
Now I realise this will put my speedo out a bit, but what about the odometer will this be affected (i.e. is it measured at the same place)?
Thanks
John
Finally got round to fitting my +2 Tooth rear sprocket yesterday
Now I realise this will put my speedo out a bit, but what about the odometer will this be affected (i.e. is it measured at the same place)?
Thanks
John
Last edited by JohnD on Mon May 25, 2009 10:13 am, edited 1 time in total.
Re: Odometer question
As far as I know the answer is, yes it will.
Two bikes, still only four cylinders!
Re: Odometer question
have a look on ebay for speedo healers, that should sort it out. i'm sure there are a few folk on here got them and can give you advice.
cheerz
kev
kev
- Pete.L
- Forum Health And Safety Officer
- Posts: 7228
- Joined: Fri Sep 26, 2003 5:09 pm
- Location: Bristol
Re: Odometer question
John said
What do you think?.... Have you pinned it yet?
Pete.l
Never mind That!!!Now I realise this will put my speedo out a bit,
What do you think?.... Have you pinned it yet?
Pete.l
My new ride is a bit of a Howler and I love to make her Squeal
Re: Odometer question
LOL - yeah sorry I neglected the important bit eh!Timbo wrote:Good man!! Straight to the bit that we really want to know about Sod the speedo, is it good fun to ride?Pete.L wrote:John saidNever mind That!!!Now I realise this will put my speedo out a bit,
What do you think?.... Have you pinned it yet?
Pete.l
Had a good blast on it on sunday... & yes it's a great mod! Acceleration is loads better, front wheel comes up much easier than before, & it handles better too (as wheel base is shortened). Only downside is that I found I was dancing round the gearbox more than before... but am sure i'll get used to that!
Re: Odometer question
Hi there
I would like this to do this mode as well as the bike is a pain to ride slowly around town and top gear feels to tall , Where did you get your sprocket from and how much was it.
All the best Neil/balls
I would like this to do this mode as well as the bike is a pain to ride slowly around town and top gear feels to tall , Where did you get your sprocket from and how much was it.
All the best Neil/balls
Re: Odometer question
Hi
Got my sprocket from wemoto for around £25 inc postage i think
http://shop.wemoto.com/index.dyn?oid=25299
(see chain & sprockets section about half way down)
John
Got my sprocket from wemoto for around £25 inc postage i think
http://shop.wemoto.com/index.dyn?oid=25299
(see chain & sprockets section about half way down)
John
Re: Odometer question
Oh yeah, in case anyones interested, I worked out that my odometer is overreading by around 4-5 miles every 100 which I can live with !
- bandsawman
- Posts: 201
- Joined: Thu Jun 04, 2009 2:54 am
- Location: Radcliffe, Manchester.
Re: Odometer question
I was told that the usual mod to do on these was to go down one tooth on the front (and that'd only cost about £6)?
Going anywhere in a car is a journey, going anywhere on a bike is an adventure!
Re: Odometer question
Right enough, but it wears the chain out a bit quicker.
It's not falling off, it's an upgrade opportunity.
Re: Odometer question
tony.mon wrote:Right enough, but it wears the chain out a bit quicker.
what about one down on front and one up on back?
read that it is good for the cct's,is this true?
- mwross1964
- Posts: 129
- Joined: Mon Mar 16, 2009 6:52 pm
- Location: galashiels, scottish borders
Re: Odometer question
yeah prey tell someone!
save puttin on manual (as ape)
save puttin on manual (as ape)
anything with wheels or tits is gonna cost ya money.
but who needs money
but who needs money
- Pete.L
- Forum Health And Safety Officer
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Re: Odometer question
I think you can throw that idea in the "wishful thinking" bucketjambo wrote:tony.mon wrote:Right enough, but it wears the chain out a bit quicker.
what about one down on front and one up on back?
read that it is good for the cct's,is this true?
Pete.l
My new ride is a bit of a Howler and I love to make her Squeal
Re: Odometer question
Agreed.
The point about the chain wear is that you're asking the chain plates to bend a wee bit more relative to each other each time they run round the front sprocket, as the diameter's smaller.
It's the smallest sprocket that affects this, the bigger one has much less effect on the angle that the plates are to each other, assuming that the teeth are in good condition.
But the rear one wears the chain in a different way; with the larger sprocket, the more links are in contact with the sprocket at any given time, and as the chain wears it puts sideways pressure on the tooth profiles- that's why an old chain fitted to a new sprocket knocks it out in double quick time.
I can't see any advantage to the CCT's- all that will happen is that the gearing change means that for a particular road speed you'll have slightly different revs.
Now this would be good for the CCT's and cam chain wear if your revs were lowered all the time (although there are effects elsewhere- increased cush drive wear, gearbox wear), but in practice all it means is that you'd change up or down a bit sooner or later to compensate.
It's really only flat out in top that you'd see a permanent difference; the rest of the time you're going up and down gears and up and down with the revs all the time you're riding.
Standard gearing: 16/41 = reduction of 2.5625:1
Your option : 15/42 = reduction of 2.8:1
popular option : 15/41 = reduction of 2.7333:1
larger at rear : 16/43 = reduction of 2.6875:1 (but longer chain probably needed)
You choose!
Lastly, it's worth mentioning that there's only so much clearance with the chain run to the exhaust pipe as it runs from right to left beneath the bike.
Fitting bigger sprockets both ends would mean that the chain starts fouling it.
God. you can really get anal about this stuff, can't you?
The point about the chain wear is that you're asking the chain plates to bend a wee bit more relative to each other each time they run round the front sprocket, as the diameter's smaller.
It's the smallest sprocket that affects this, the bigger one has much less effect on the angle that the plates are to each other, assuming that the teeth are in good condition.
But the rear one wears the chain in a different way; with the larger sprocket, the more links are in contact with the sprocket at any given time, and as the chain wears it puts sideways pressure on the tooth profiles- that's why an old chain fitted to a new sprocket knocks it out in double quick time.
I can't see any advantage to the CCT's- all that will happen is that the gearing change means that for a particular road speed you'll have slightly different revs.
Now this would be good for the CCT's and cam chain wear if your revs were lowered all the time (although there are effects elsewhere- increased cush drive wear, gearbox wear), but in practice all it means is that you'd change up or down a bit sooner or later to compensate.
It's really only flat out in top that you'd see a permanent difference; the rest of the time you're going up and down gears and up and down with the revs all the time you're riding.
Standard gearing: 16/41 = reduction of 2.5625:1
Your option : 15/42 = reduction of 2.8:1
popular option : 15/41 = reduction of 2.7333:1
larger at rear : 16/43 = reduction of 2.6875:1 (but longer chain probably needed)
You choose!
Lastly, it's worth mentioning that there's only so much clearance with the chain run to the exhaust pipe as it runs from right to left beneath the bike.
Fitting bigger sprockets both ends would mean that the chain starts fouling it.
God. you can really get anal about this stuff, can't you?
It's not falling off, it's an upgrade opportunity.