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+--- Thread: Swingarm spacing? (/showthread.php?tid=67131)
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Swingarm spacing? - ChristoT - 30-01-14
Weird question I know, but here goes: What is the width of the swingarm at the pivot point? And how far out from the bike's centreline is the rear sprocket?
I ask because I'm making a detailled list of parts I want for a custom FZS600 I want to build when I have a bit more cash, and had a little idea I want to toy with.
Also, what are the negative effects of fitting a narrower wheel to the Fazer?
Re: Swingarm spacing? - darrsi - 30-01-14
"...Also, what are the negative effects of fitting a narrower wheel to the Fazer?..."
Less "tyre" surface grip, there's no reason to do this at all, presuming your tyre size would change.......stop your thoughts at once!
They spend years testing this sort of stuff to get things right.......trust them, they have more time and money than us!
Re: Swingarm spacing? - ChristoT - 30-01-14
(30-01-14, 02:20 AM)darrsi link Wrote: "...Also, what are the negative effects of fitting a narrower wheel to the Fazer?..."
Less "tyre" surface grip, there's no reason to do this at all, presuming your tyre size would change.......stop your thoughts at once!
They spend years testing this sort of stuff to get things right.......trust them, they have more time and money than us!
That doesn't really answer the question though..
The wheel I'm considering (for all sorts of reasons) takes a 150/60 R17. I'm a bit loath to fit an even wider wheel because I then have to worry about chain offset - easier to do on the back than the front.
Re: Swingarm spacing? - Punkstig - 30-01-14
I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!
Re: Swingarm spacing? - darrsi - 30-01-14
(30-01-14, 08:39 AM)Punkstig link Wrote: I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!
That's what i was getting at.
Re: Swingarm spacing? - Punkstig - 30-01-14
(29-12-10, 09:51 PM)frazer link Wrote: [quote author=Farjo link=topic=30.msg67#msg67 date=1293653660]
:rollin
You're the main tester - involved at all stages of this long, long project :thumbup
Cool, tonight I shall perform the "lying on the pub floor choking on my own vomit whilst logging into here on the fone" test. Always a winner. :lol
[/quote]
I know you was, I'm backing you up!
Re: Swingarm spacing? - darrsi - 30-01-14
(30-01-14, 11:52 AM)Punkstig link Wrote: [quote author=frazer link=topic=30.msg73#msg73 date=1293655917]
[quote author=Farjo link=topic=30.msg67#msg67 date=1293653660]
:rollin
You're the main tester - involved at all stages of this long, long project :thumbup
Cool, tonight I shall perform the "lying on the pub floor choking on my own vomit whilst logging into here on the fone" test. Always a winner. :lol
[/quote]
I know you was, I'm backing you up!
[/quote]
That's clever, how did you bring up that quote? :lol
Re: Swingarm spacing? - ChristoT - 30-01-14
And still no-one has replied to the OP!! :lol :lol :lol
I'm asking because I have a bit of a thing for single sided swingarms, and I want to know what will fit. A Honda NT650 Bros sports a 150/60 R17, and I reckon it might do the job. A SSSA would also make life easier for the underseat exhaust.
Re: Swingarm spacing? - Fazerider - 30-01-14
The swing arm pivot sleeve is 236mm long, allowing a millimetre at each end for the washer/end seal gives a total gap in the frame of 238mm.
I had to go out and top-up the chainlube, so poked around with a ruler for you: the centreline of tyre to centreline of chain measured 110mm with standard 9mm sprockets.
Re: Swingarm spacing? - ChristoT - 30-01-14
(30-01-14, 12:12 PM)Fazerider link Wrote: The swing arm pivot sleeve is 236mm long, allowing a millimetre at each end for the washer/end seal gives a total gap in the frame of 238mm.
I had to go out and top-up the chainlube, so poked around with a ruler for you: the centreline of tyre to centreline of chain measured 110mm with standard 9mm sprockets.
Thanks, Fazerider!
Re: Swingarm spacing? - Fazerider - 30-01-14
Don't be too worried about the slightly narrower tyre, the reduction in contact patch won't be very significant. After all, the front copes with braking forces that are just as great as the rear gets from the engine.
There may even be a slight handling benefit: the contact patches of front and rear are out of line with each other when banked over… the more similar in width the tyres are, the less misalignment there will be.
Good luck with the project, I hope you can get things to fit.
Re: Swingarm spacing? - ChristoT - 30-01-14
(30-01-14, 12:53 PM)Fazerider link Wrote: Don't be too worried about the slightly narrower tyre, the reduction in contact patch won't be very significant. After all, the front copes with braking forces that are just as great as the rear gets from the engine.
There may even be a slight handling benefit: the contact patches of front and rear are out of line with each other when banked over… the more similar in width the tyres are, the less misalignment there will be.
Good luck with the project, I hope you can get things to fit.
First I need a bike to fit stuff to! :rolleyes
This is an idea I've had kicking about for about a year. I've been working on details in my mind, I hope to get to build it!
Re: Swingarm spacing? - Punkstig - 30-01-14
(30-01-14, 11:59 AM)darrsi link Wrote: [quote author=Punkstig link=topic=11521.msg124083#msg124083 date=1391079149]
[quote author=frazer link=topic=30.msg73#msg73 date=1293655917]
[quote author=Farjo link=topic=30.msg67#msg67 date=1293653660]
:rollin
You're the main tester - involved at all stages of this long, long project :thumbup
Cool, tonight I shall perform the "lying on the pub floor choking on my own vomit whilst logging into here on the fone" test. Always a winner. :lol
[/quote]
I know you was, I'm backing you up!
[/quote]
That's clever, how did you bring up that quote? :lol
[/quote]
No idea, lols!
Re: Swingarm spacing? - darrsi - 31-01-14
(30-01-14, 12:08 PM)ChristoT link Wrote: And still no-one has replied to the OP!! :lol :lol :lol
I'm asking because I have a bit of a thing for single sided swingarms, and I want to know what will fit. A Honda NT650 Bros sports a 150/60 R17, and I reckon it might do the job. A SSSA would also make life easier for the underseat exhaust.
Isn't that a shaft drive swing arm?
My previous bike was an NTV Revere 600 which is from the same family.
Re: Swingarm spacing? - ChristoT - 31-01-14
The 650 Bros isn't, but the Deauville (also called NT650) is a shafty.
Re: Swingarm spacing? - darrsi - 31-01-14
(31-01-14, 02:37 PM)ChristoT link Wrote: The 650 Bros isn't, but the Deauville (also called NT650) is a shafty.
I actually miss the shaft drive, the bike was so damn clean!
Re: Swingarm spacing? - Lumpy - 03-02-14
(30-01-14, 08:39 AM)Punkstig link Wrote: I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!hmmm, you are assuming the contact patch is reduced of course, there ins't a great deal of difference between the contact patch of a 150 compared to a 160 and different manufacturers may have a different profile and actually have more contact patch. Narrower tyres benefits are faster turn in and better wet weather grip, a fzs600 is never going to light the rear end up so there will be enough grip there anyways.
Try is Christo, even if it looks odd.
Re: Swingarm spacing? - Punkstig - 03-02-14
(03-02-14, 09:15 AM)Lumpy link Wrote: [quote author=Punkstig link=topic=11521.msg124060#msg124060 date=1391067587]hmmm, you are assuming the contact patch is reduced of course, there ins't a great deal of difference between the contact patch of a 150 compared to a 160 and different manufacturers may have a different profile and actually have more contact patch. Narrower tyres benefits are faster turn in and better wet weather grip,
I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!
[/quote]
Lovely contradiction there!
Re: Swingarm spacing? - Lumpy - 04-02-14
(03-02-14, 09:37 AM)Punkstig link Wrote: [quote author=Lumpy link=topic=11521.msg124656#msg124656 date=1391415321]hmmm, you are assuming the contact patch is reduced of course, there ins't a great deal of difference between the contact patch of a 150 compared to a 160 and different manufacturers may have a different profile and actually have more contact patch. Narrower tyres benefits are faster turn in and better wet weather grip,
[quote author=Punkstig link=topic=11521.msg124060#msg124060 date=1391067587]
I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!
[/quote]
Lovely contradiction there!
[/quote]lots of kafas out there. Do what you want. Too many darrsi types out there trying to put imagination off and stuff.
Re: Swingarm spacing? - ChristoT - 04-02-14
(04-02-14, 12:02 AM)Lumpy link Wrote: [quote author=Punkstig link=topic=11521.msg124658#msg124658 date=1391416643]hmmm, you are assuming the contact patch is reduced of course, there ins't a great deal of difference between the contact patch of a 150 compared to a 160 and different manufacturers may have a different profile and actually have more contact patch. Narrower tyres benefits are faster turn in and better wet weather grip,
[quote author=Lumpy link=topic=11521.msg124656#msg124656 date=1391415321]
[quote author=Punkstig link=topic=11521.msg124060#msg124060 date=1391067587]
I don't know the answer but I also don't know why anyone would think of reducing the rear contact patch!
[/quote]
Lovely contradiction there!
[/quote]lots of kafas out there. Do what you want. Too many darrsi types out there trying to put imagination off and stuff.
[/quote]
Well, when I get another Fazer, I intend to try! I just like to know what the pros and cons of each system are before I start.
Hopefully, it'll be a reasonably simple task to swap everything over. Sooo, anyone want to give me a bike to try this on?
