Swingarm swap. FLIGHT inspired (darn you DUCK-STEW)

[Düb Lüv]

after seeing Stew's creations and pm'ing him, he has inspired me to tackle this swap.

i got lucky and bought the swingarm off ebay for $50 shipped. before going any further, i had to do a test fit. he advised that i just buy a steel swing first, in case i had to do some welding or tweaking. when i'm finished, it'll be replaced with a purdy aluminum one.

the first difference i noticed is that how much weight i going to drop. when i pull the SS swing back off i'm going to get a accurate weight of the 2. i was too excited.

i'm almost convinced that high mounts would look nice. i'm usually a low mount kinda guy.

[MotoCreations]

Besides the swingarm swap itself -- and having to modify the tank/etc for the Supersport style shock setup...

find yourself a 900Supersport set of headers. (they are pretty cheap when you can find!) Modify then to work with your low/high mounts as required.

Why?  Supersport swingarm has the rear header between the engine case and swingarm brace.  Monster the rear header travels farther back before poking down through the swingarm itself.  Two very different exhaust routings that most people don't realize... 

[brix821]

looks awesome. The spark style high mounts would look great, as they hug the subframe more

[Düb Lüv]

Besides the swingarm swap itself -- and having to modify the tank/etc for the Supersport style shock setup...

find yourself a 900Supersport set of headers. (they are pretty cheap when you can find!) Modify then to work with your low/high mounts as required.

Why?  Supersport swingarm has the rear header between the engine case and swingarm brace.  Monster the rear header travels farther back before poking down through the swingarm itself.  Two very different exhaust routings that most people don't realize... 

i'm already ahead of ya. i talked pretty in depth with stew, and already pointed out the thing to be modified. like you listed tank, header, shock mount.

i can use my headers. the vertical pipe just has to be trimmed back a little. i also thought about cutting a half circle out of the swing where the header fits through and welding all around. so i wouldn't have to trim as much(just a thought).

the low mounts i have will actually work without mod'ing. they're old 2 brothers that have a 2 piece design. the elbow bend and muffler are separate, and can be rotated to change the angles. but the exhaust is the lease of my worries.

one thing i realized, is that i might not be able to use the CA track tank. on the other side i might be able too. it just depends if the shock mount would fall right in the round cutout of the CA track tank.

[Raux]

the other option is a pair of sport classic springs in the back. right now a set is on ebay for supercheap brandnew.

[brad black]

i was going to say "can you just put a short pushrod between the swingarm and std suspension rocker?  saves remounting the shock, etc." but then realised that there's no lower shock mount.

[Raux]

how about under the seat?

hear me out

if you were to mount the shock horizontally under the seat using the back of the frame as the mount. then put a push rod actuator with a 90 deg bend...

[Duck-Stew]

Wow...  OK.  Good luck with all this!

If you want, I can put frame tubes onto your existing frame to mount up the SS top shock mount in the exact position as it would be on a SS frame so the suspension geometry will be correct...

Tank mods will drive you insane...

[Speeddog]

 

[Raux]

i had to change the thread name after looking at this.

i'm going to swap a swingarm, but right now, not too sure which one.



looks very clean in person.

again get on ebay someone has a set (2 shocks) of sport classic shocks on sale cheap.

[Düb Lüv]

found them raux, but i kinda like the mono shock better than the biposto style. if i can get them cheap, i'll go ahead andd buy them for test fitting. on ducati.ms, i found a guy who has a stock mono shock w/ hyperpro spring.

one thing i have to fing out is how long the sport classic springs are. after looking on the ohlins site, i found these 3 shocks have the same specs, but different pt#. paul smart, 91-02 SS, and mh900e are all s46pr1c1L. probably different lengths

[Raux]

they all mount differently. the ss and mh900e are close but the PS is different.

PS

MH900e


and of course you have the SS

[Düb Lüv]

what's PS?

when i listed those shocks, on the ohlin's site, they had the same type of shock. but as far as valving and length i don't know
the reason i brought those up was, if the SC mono shock is too long for the monster and use an alternative.

this is how ohlin;s broke down the s46pr1c1L of the shock, and all three shared the same.

http://www.ohlins.com/Templates/Pages/TypeCode/TypeCode.aspx?typecode=S46PR1C1L


i need somebody with a SC to take some measurements for me. to get an idea where the shock mounts.

[Raux]

someone more knowledgeable than me can answer this, but would you think there might be a need for additional bracing on the swingarm since you are putting the load on one side.

[Triple J]

someone more knowledgeable than me can answer this, but would you think there might be a need for additional bracing on the swingarm since you are putting the load on one side.

I'd think the same thing. It works on the MH900 SSS because it is designed that way. Seems a single shock on the DSS would cause unbalanced loading on the swingarm pivot.