5forty2's duKATi project. P

[5forty2]

Let's get this thing started. So I have always loved the look of a nice single sided swingarm and have been tossing around this idea for a while. I ran across one for a ducati at a great price and figured "why not". The swingarm is still in transit, but I figured I would go ahead and start the thread and show everyone what I'm starting with. Any suggestions or advice will be greatly appreciated and I already owe gsxfJim a lot of thank yous for his help and advice so far. I will be taking lots of pics, and probably bugging the crap out of the more engineering or machining minded members that I know on here, so I'm sorry and thanks in advance. Anyway, here is where I'm at right now, I have 2 pre 750's and an 88 600 along with a bunch of buckets and boxes full of extra parts (some of which I will be selling to help finance th duKATi project, so feel free to pm me if you need anything). Now for the pics.

[sporty_drew]

This will be interesting

[HemiKat]

Of all the things Ive thought about doing to my Kat a SSSA isnt one of them... Im subscribed!

[slim68]

alright u have my attention. Can't wait.

[BareKat]

subscribed... this should be interesting.

[5forty2]

a few more pics

[Unholy_m]

Yeah I have to agree with the rest of them. I find this interesting. Subscribed!!!

[Waltari]

Too bad you already bought the Duc arm as I have a complete arm/hub/brake assembly for a Honda NT650 that would have been a better fit. The Duc arm should be around a 1/4" wider at the pivot than the NT arm. You'll most likely need to have material machined off the pivot to make it fit between your frame rails, custom bushings machined, new bearings, new shock mounts welded to your frame, etc. Let me know if there is anyway I can help...look forward to seeing your progress! For anyone else wanting to do this, feel free to PM me about my NT arm...it'll be going up for sale as part of my summer clearing out the garage parts sale

For those curious about SSSA widths, here's some other random info I have:

Ducati 748/916/996/998 - 243mm
Honda VFR750 (1990-93) - 242mm
Honda VFR750 (1994-97) - 227mm
VFR400 - 192mm
RVR400 - 202mm
Hawk NT650 - 235mm
RC30 - 235mm
RC45 - 250mm
VFR800 - 280mm
MV Agusta F4 - 255mm
Triumph Daytona 955i - 284mm


Honda VFR ('90-'2003+), Hawk, RC30/45, NSR250 all use the same relative rear wheel offset. i.e. mix and match wheels amongst the various models and so long as the spindle face is unmolested the wheels will remain centered.

90-93 VFR (shock linkage mount is two lobes on bottom of swingarm)(shock end is a 'fork')
Length: 565
Pivot width: 242 (+3.5 thrust collar)
Pivot diameter: 20
Eccentric outside diameter: 105
Eccentric width: 70 (+3 crenelated 'edge')
Caliper carrier diameter: 75
Caliper carrier width: 14
Brake rotor diameter: 255
Brake rotor mount diameter: 110
Sprocket mount diameter: 175
Wheel drive diameter: 100

94-97 VFR (shock linkage mount is one lobe on bottom of swingarm)(shock end is an 'eye')
Length: 560
Pivot width: 227 (+3.5 thrust collar)
Pivot diameter: 20
Eccentric outside diameter: 105
Eccentric width: 70 (+3 crenelated 'edge')
Caliper carrier diameter: 75
Caliper carrier width: 14
Brake rotor diameter: 255
Brake rotor mount diameter: 110
Sprocket mount diameter: 175
Wheel drive diameter: 100

Hawk (shock is direct-mounted to top of swingarm)(shock end is an 'eye')
Length: 545
Pivot width: 235
Pivot diameter (right): 15
Pivot diameter (left): <22
Eccentric outside diameter: 105
Eccentric width: 70 (+3 crenelated 'edge')
Caliper carrier diameter: 75
Caliper carrier width: 14
Brake rotor diameter: 240
Brake rotor mount diameter: 100
Sprocket mount diameter: 165
Wheel drive diameter: 100

RC30 (shock linkage mount is two lobes on bottom of swingarm)(shock end is a 'fork')
Length: 530
Pivot width: 235
Pivot diameter: 20
Eccentric outside diameter: 105
Eccentric width: 70 (+3 crenelated 'edge')
Caliper carrier diameter: 76
Caliper carrier width: 13
Brake rotor diameter: 220
Brake rotor mount diameter: 110
Sprocket mount diameter: 140
Wheel drive diameter: 85

RC45 (shock linkage mount is two lobes on bottom of swingarm)(shock end is a 'fork')
Length: 540
Pivot width: 250
Pivot diameter: 20
Eccentric outside diameter: 117
Eccentric width: 77 (+3 crenelated 'edge')
Caliper carrier diameter: 76
Caliper carrier width: 13
Brake rotor diameter: 220
Brake rotor mount diameter: 110
Sprocket mount diameter: 140
Wheel drive diameter: 85

RVF400 (shock linkage mount is two lobes on bottom of swingarm)(shock end is a 'fork')
Length: 540 (??)
Pivot width: 215
Pivot diameter: 20
Eccentric outside diameter: 105 (??)
Eccentric width: 60 (+3 crenelated 'edge')
Caliper carrier diameter: 76 (??)
Caliper carrier width: 15
Brake rotor diameter: 220
Brake rotor mount diameter: 110
Sprocket mount diameter: 140
Wheel drive diameter: 85

NSR250 / mc28
Wheel drive diameter: 85

MV Agusta F4 (shock linkage mount is bolt on, under swingarm. linkage arrangement is similar to Ducati 916)
Length: 545
Pivot width: 255
Pivot diameter: 20
Eccentric outside diameter: 105
Eccentric width: 76
Wheel drive diameter: 85

[loudnlow7484]

I don't want to even consider how long it took you to gather all that information. Seriously.

[sporty_drew]

If I knew I could handle the machine work I'd love to take that swingarm off your hands. That is a very nice amount of info for anyone looking to do a swap someday.

[Unholy_m]

Waltari: Your knowledge never seizes to amaze me.

[Apathy]

LOL I'll be watching this one... I loved the single swing arm and dual exhaust so much I just had to convert to the real thing

[5forty2]

Waltari, that is some very thorough information, I will keep you in mind if I hit any snags. Thanks a lot.

[5forty2]

here are some pics of where she is at after a couple of hours last night. Yes, I know they are blurry, but i have promised to use the camera from now on, instead of the cell phone(Thanks Jay).

[2wheeladict]

hah your pile looks kinda like mine. looking forward to seeing the end result