cbr rear wheel

[yorkie_chris]

Right then here's one for y'all.

I'm quite liking the thought of putting a 180 rear on the SV, mainly because I can get 1000 miles worth of part worn for a fiver, sticky ones at that.

I'm also after something which is an upgrade, rather than the bandit 1200 rear which from picking one up the other day is around 4 metric tons.

I'm looking at the CBR F3 rear wheel, seen a spacer kit here;
http://cgi.ebay.com/ebaymotors/SV650-Race-CBR-F3-Rear-Wheel-Captured-Spacers-99-02_W0QQitemZ370022713741QQihZ024QQcategoryZ35601QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem

However, am I right in thinking that the F3's are all 5-spoke?

Do you think it'll look daft with a 3s front and 5s rear? (bear in mind the front has got mahoosive 320mm rotors either side)

[NedSVS]

Yes, all F3's are 5 spoke wheels as ued by Honda up to about 1998 on 400's 600's and 900's in various sizes. I have managed to fit CBR 600 wheels front & rear. Search for posts by me (nedsvs) and hopefully you will find my post with photos of both wheels fitted. If you want any more info PM me or continue with this thread, but please be patient - I'm happy to help, but I am a busy man! Incidentally, personally I wouldn't fit bigger than a 170 to the F3 5.00 inch rim.

[zadar]

F3 wheels are 5 spoke,so is F2 which looks identical but is 4.5 inch instead 5 inch for F3.
F4 or 900 also look almost same but are 5.5 and dont fit on sv without machining wheel itself.180 is not best tire for F3 wheel.160 or 170 at most.
kit on ebay is copy of twin works factory kit but more expensive.you also have to deal with rotor diameter and sometime with sprocket carrier studs.

[John 675]

do they just bolt straight on?

http://i209.photobucket.com/albums/bb290/NedSVS/Picture084.jpg

[sv_rider1990]

I'd like that idea is there any wheels that'd fit just being a straight swap? Or is it a slight modification job?

[plowsie]

Be a mod on spacers me thinks?

Chris you should just buy the CBR to go with it...Funnily enough I have......







:lol:

[yorkie_chris]

Hmmmmm

Well I don't mind messing about, can easily get spacers made and such.

3 spoke 5.5inch ones from a fireblade maybe? The big issue is probably the distance between the rotor and sprocket and how to get a 525 sprocket to fit. Hmmm.

[Blue_SV650S]

Just put a 180 tyre on ya SV rim, that is what I did! 8)

[yorkie_chris]

I did, it wasnt very nice

[Blue_SV650S]

Be a mod on spacers me thinks?

Chris you should just buy the CBR to go with it...Funnily enough I have......







:lol:

The old nails like you have run a 160 section rear like the SV though ;)

[Alpinestarhero]

do they just bolt straight on?

http://i209.photobucket.com/albums/bb290/NedSVS/Picture084.jpg

ohmygodthatlooksgreatiamSOdoingthismod

:king:

:D

Matt

[Blue_SV650S]

I did, it wasnt very nice

What was the matter with it?

[yorkie_chris]

Didn't feel very confidence inspiring at all, seemed to want to fall in and didn't feel at all stable. (That was a pilot sport 180)

[Blue_SV650S]

Didn't feel very confidence inspiring at all, seemed to want to fall in and didn't feel at all stable. (That was a pilot sport 180)

You expect the 180 (on a 180 rim) to improve handling then?? How? :confused:

[Blue_SV650S]

ohmygodthatlooksgreatiamSOdoingthismod

:king:

:D

Matt

Personally I prefer the SV 3-spoke ... eye of the beholder and all that though ;)

[northwind]

how to get a 525 sprocket to fit. Hmmm.

That's easy, phone B&C Express and they'll make you one, it's not expensive even with the hard anodising.

[yorkie_chris]

You expect the 180 (on a 180 rim) to improve handling then?? How? :confused:

If the handling stays the same then I'd be chuffed, as I can get 180 tyres really cheap.

Am I right in thinking that the 180 on 160 rim was pinched inward and this is why the handling wasn't so good. 180 on a properly sized rim should have a better profile shouldn't it?

I'm no expert on this, just bouncing some ideas around, so am quite probably talking complete balls. :-P

[Blue_SV650S]

If the handling stays the same then I'd be chuffed, as I can get 180 tyres really cheap.

Am I right in thinking that the 180 on 160 rim was pinched inward and this is why the handling wasn't so good. 180 on a properly sized rim should have a better profile shouldn't it?

I'm no expert on this, just bouncing some ideas around, so am quite probably talking complete balls. :-P

You can't expect the bike to handle the same as it would with a 160 with a 180 rear in (even on a 180 rim) how can it? ;)

[yorkie_chris]

What difference would you expect?

[hovis]

ohmygodthatlooksgreatiamSOdoingthismod
Mattlooks odd to me

Personally I prefer the SV 3-spoke ... eye of the beholder and all that though ;)
i agree,

[Blue_SV650S]

What difference would you expect?

Never ridden one with a proper 180 conversion, or looked overly close at the exact geometry, but I’d postulate it’d almost certainly make the bike steer slower. And then as the bike leans more and gets more up on the side of the rear tyre, make the front come off profile and potentially allow it to break free …

The first part about slower steering I expect to be 90% probable, the latter part would really rely on the amount of deflection in the tyres and all the angles of the dangles. In practice, under ‘normal’ riding conditions I doubt the front washing coz of the rear profile would come into play … but something to consider! ;)

There is even a chance that the geometry works better with a 180 rear … I just don’t KNOW … I can tell you for certain it isn’t going to be the same as the stock format – it can’t be! And there is a good chance it will be ‘worse’ in one way or another!! ;)

[yorkie_chris]

Stock geometry isn't really worth considering, since if I do this then there'll be gixxer forks on it and probably a jack up kit too.

[Blue_SV650S]

Stock geometry isn't really worth considering, since if I do this then there'll be gixxer forks on it and probably a jack up kit too.

In that case it could be really bad!! :D

[plowsie]

I rode for a couple of months with one, but mine was accompanied with a raised rear end and also the gixxer front end. With all this, I had no complaints with slower steering at all. I was more than confident to get the thing down on its side, was bloody hard working on them strips though lol. My Dunlop Qualifiers were feathered after the North Wales rideout take 2.

Anyway, all this malarkee about slower steering. Never experienced it, but I was accompanied by a few other mods so possibly it may.

[plowsie]

In that case it could be really bad!! :D

My second SV was a lot better than my first. First been standard, second with the mods Chris just mentioned.

[yorkie_chris]

I can make a fair job of looking at geometry, and looking at what forces are going where. But I have no idea where to start about tyre flex, so I guess the only way is to find someone who's done it before.

The slower steering bit: Would the larger rear be more stable? i.e more restoring force or simply be slower to react to anything? Greater gyroscopic forces involved as it'll probably be heavier, depending on the wheel.

[Blue_SV650S]

To be fair boys, the SVs suspension is so shockingly poor as stock that putting a GIXER front on it and setting it up in a more ‘aggressive’ stance is going to transform how it rides!! ;)

At the end of the day, a fatter rear WILL slow the bike … again, how can it not ;) The only advantage of a fatter rear is that you can hook up better mid turn, it improves corner exit at the expense of ‘flickability’ … but lets face it, do you care about ultimate flicakbility and ultimate hookup … no you want your bike to look cooler!! :D

I am playing devils advocate really, but don’t assume fitting a fatter rear (alone) is actually an upgrade, depending on what you want to do with it, it might actually be a downgrade!! ;)

[yorkie_chris]

At the end of the day, a fatter rear WILL slow the bike … again, how can it not ;) The only advantage of a fatter rear is that you can hook up better mid turn, it improves corner exit at the expense of ‘flickability’ … but lets face it, do you care about ultimate flicakbility and ultimate hookup … no you want your bike to look cooler!! :D

No, I'm not that good.

Yes it would look good, and most definately paying a tenner for a tyre is a good thing

[Blue_SV650S]

No, I'm not that good.

Yes it would look good, and most definately paying a tenner for a tyre is a good thing

Cool, if you can get them for a tenner, then get me some too, I don't mind sticking them on the stock SV rim 8)

That is unless they are Michelins ... please don't tell me they are Michelins ... what are they? :-?

[jambo]

Apples should not be compared to oranges. By the time you've fitted GSXR forks & wheels, possibly a 120/70 tyre, jack-up plates, possibly an aftermarket shock and a wider rim with a 180 tyre your geometry has been affected by way more things than the tyre size.

On my ZX6R I have run a 170/60 R17 and a 180/55 R17 tyre (both are recommended fitment for that rim). Nothing else has been changed. I found when moving the bike through turns with the 180 rear it seemed *slightly* slower to change direction at the back. The trade off should be more rubber in contact with the road at big lean angles, but I'm not honestly that aggressive so had no complaints from the 170.

It's not going to make the bike brilliant or rubbish, but it will make it different, and going from a 160 to a 180 is likely to make the bike feel less nimble. Personally I wouldn't bother.

Jambo

[yorkie_chris]

That is unless they are Michelins ... please don't tell me they are Michelins ... what are they? :-?

Last one was a pilot sport :-P

[Blue_SV650S]

Last one was a pilot sport :-P

Ah ... ok, if you can get ANYTHING that isn't a sh1thelin, then let me know!! 8)

[NedSVS]

lylej asked,

do they just bolt straight on?

Afraid not; infact, far from it. The rear is reasonably straight forward just needing suitable spacers or a bearing swap and spacer combination. The more observeant may have noticed the pointy rear brake conversion too which suits the F3 disk diameter. The front can only be done if you swap to gsxr callipers on adapter plates, because the pad retaining lugs of standard callipers hit the rivets on the Honda disks. The Honda disks also need reducing a few mm in diameter. The speedo drive changes sides and is a modified SV one which is driven by a specially made castleated bearing adapter sleeve. The bearing adapter sleeve on the left is just a plain cylindrical one.

Was it worth it? Many would say not, but it just became a bit of an obsession with me! But, on the other hand, I am very pleased with the result.

[zadar]

The more observeant may have noticed the pointy rear brake conversion too which suits the F3 disk diameter.
or you can use rotor for honda africa twin which is same diameter as sv rotor.