Swing Arm Conversion again!

I know this topic has been covered a few times before.
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I am in 2 minds whether to convert my bike to a single sider or save and buy a s2r.

I am interested in fitting a S*R swing arm to my 750ie, as I might be able to get one quite cheaply. After having a quick look thought some old posts, I see it should just bolt straight on. (thanks ak)

what else would need to finish the mod?

-new rear wheel?
-rear break disk?
-break hose?
-sprockets/chain?

Thanks for the help,

Martin

You will probably have to change almost everything that you have listed,
and probably the exhaust too.

I'm very interested in this mod, as I would also like to know what needs to be done.

[Capo]

I have a S4R swingarm, brake disk, caliper and shock available

[gary tompkins]

Sell the 750 and buy Albie's S4/S4R custom - lot's less hassle and instant single sider

Ex UKMOC Bike of the Year 2008 to boot

[Albie]

Err yeah I was going to say unless you dont want a pillion. you will need as follows

Swingarm
Hub and brakes
Footrests/ gearchange and brake
Pillion hangers if so you will need to make up new mountings and weld to frame
Rear Wheel
Rear shock and if its an s4r one you need to mod frame to clear
Exhaust headers and system as they are totally different lengths
A new chain
If you do not intend to pillion you may be able to use old hangers or rearsets but the exhaust may have to be a custom made or an underslung system.

Dont be put off it easy enough but you have to source the parts.

Modding my bike might be an effort, but for me it's definitely half the fun. If I can get the parts at the right prices. I will source the parts over the summer, for a winter rebuild :-)

I just not keen on a bike with plumbing so the S4/S4R is out the quest.
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Abbey you said,

'a rear shock and if its an s4r one you need to mod frame to clear'

~ so I need a s*r rear shock, preferable from a s2r so I don't need to mod the frame. (is this a big mod?)

'Hub and brakes' ~ it's the centre bit of the wheel, holds the break too??

- already looking at rearsets for the bike, and don't have a big requirement for pillion hangers

- If I bought a s2r, I would fit a underslung system anyway (QD ex box or custom)

Am I correct in thinking a wheel from a 998 would fit too.

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Capo, if you could pm me with the price for the parts to see if it's in my price bracket, cheers.


Thanks all for the help,
I think I better start re-looking though some of your old rebuild posts abbey :-)

[Albie]

'a rear shock and if its an s4r one you need to mod frame to clear'

~ so I need a s*r rear shock, preferable from a s2r so I don't need to mod the frame. (is this a big mod?)S2r one is fine but non adjustable S4r is better. Basically Ducati crimpe the frame on the rear on one side around 2mm squashed on inside, I have pics of what I did

'Hub and brakes' ~ it's the centre bit of the wheel, holds the break too??Yes holds the brake

- already looking at rearsets for the bike, and don't have a big requirement for pillion hangers

- If I bought a s2r, I would fit a underslung system anyway (QD ex box or custom) Yes but you still need s2r headers to come down. They are either longer or shorter without looking. Standard ones can be modded if you know and exhaust specialist

Am I correct in thinking a wheel from a 998 would fit too.Yes it will fit

And yes you are correct in it is fun and you are capable and if you do rest assured you will be proud of your efforts.

[Albie]

Link to my post resurrected with photos redone. If you need more pics as I never posted all please pm me and I will either search or photograph s4 in more detail of the area you have concerns with.
http://www.ukmonster.co.uk/monster/s...ad.php?t=25917

[grunter]

http://www.ukmonster.20m.com/photo2.html

So far I've managed to get a few bit from Capo,

Does any know if rear axle / hub from a 748/916/996/998 will fit into a S*R swingarm

Originally Posted by Panther

So far I've managed to get a few bit from Capo,

Does any know if rear axle / hub from a 748/916/996/998 will fit into a S*R swingarm

Yes it should be exactly the same - but you can always check the part numbers with your ducati dealer (you'll be visiting them a lot over the next few months I imagine x)

You will also have to bare in mind that the speedo pick-up requires 6 pulses (bolt heads) for the regular swingarm ie monsters (inc the S4), whereas I believe the S2R/S4R only needs four pulses/bolts... on my Febur conversion kit, they mod the stock 916 rear disc with tabs to correctly space six ferrous bolts to drive the speedo pick-up.

Also, a 916 etc rear disc/caliper carrier is slightly smaller diameter than the S2R/S4R (although the caliper itself will fit) - so you'll need to use the correct disc for the corresponding caliper bracket.

Also, most 916/998s etc ran a 525 pitch chain and sprockets, so you'll need to factor in a 520 rear chainring (expensive - I'd get the Renthal combo). Alternatively you might be able to run a 525 chain and front sprocket? - but not sure the chain will line up on the swingarm slipper - not sure if the S4R runs a 525 or 520 chain like the S2R?

You are also likely to need a selection of shims for the swingarm pivot to get it spaced properly on your engine case as they all differ slightly (by a few thou).

Boy are you going to have fun...

xxx

Thanks for the help and advice JMo, I did not realise about the speedo pick, lucky my fathers an electical engineer so I hope he can figure that out.

I'm going to measure the engine casing and swingarm dia with a vernier calliper, so I should be able to machine some shims up for the pivot, rather than buying a selection of ducati shims to make them fit.

I have start downloading a few different Part catalogues. to make sure I've got all the parts before I start the rebuild. I've already got a rear disc, calliper and sprocket from a S4R (cappo) too.


below you see hub for 748 and S4R have a different part number

748 part 13 (hub) 819.2.039.2A





S4R part13 (hub) 819.2.042.1A

Hi Panther - I can't see the pictures on my computer?

As for the shims, said the waiter to Mr Creosote - they are only wafer thin... like a few thou - you certainly won't be able to machine them - but they only cost a few pence each from Ducati... they are there to stop any side to side play in the swingarm...

xxx

[Albie]

They come in various sizes such as 1mm 0.50mm 0.10mm kind of thing. You do need some play but minimal. Dealers have them and they are not dear.

Early s4 has speedo on front wheel like mine did. Later with sweeping clocks rear wheel.


m900 m1000 s4 and s4r has 525 chain.

I've just added an attachment of the rear wheel pin from a 748 and S4R on my previous post.

The yellow parts show the parts I definitely need to buy (15 is the shims) I also need some snap rings (4). I hope to fire an email off tonight to my local dealer (Coventry) with a list of parts needed



15 852.1.001.1B Shim th. 1.8
15 852.1.002.1B Shim th. 0.2
15 852.1.003.1B Shim th. 0.1

I'm also planning on machining the end's of the pivot bolts, as I'm thinking of using 'ie' rearset rather than S*R style.

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I'm right in thinking I can use the rocker assemble from my 'ie' the part numbers are all the same as the S4R apart from the suspension (already have a S4R suspension too)