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Author Topic: Rickman CR parts sourcing, rear wheel spoke hub manufacturer, etc?  (Read 18176 times)

Offline Chuck78

  • Posts: 299
    • my bike photo album
Here's another peak at the fork setup:


This is a set of Suzuki RF900R 43mm diameter 730mm long cartridge beauties... early Hayabusa/Bandit 1200 6 piston calipers for smaller pistons to help clear wire spokes near the hub (widest point). Calipers came with red stainless lines (to match the red Koni shock springs on the GS425-475cc project). Full ft&rr set of RF900 stainless lines coming with another $75 pair of RF900 fork legs, the later ones with adjustable dampening even!

 The early RF900 non-adjustable dampening models are the same as Bandit 1200 & early GSXR1100 K forks aside from being 730mm long vs 775mm or 745mm long.

Custom GS500 fork brace that was destined for the GS425-475cc with easy bolt-on GS500E 37mm damper rod (+ RT Emulators) forks, but now I'll throw a single 310mm rotor and RF900 forks on the 425-475cc also. The RF, Bandit, and GS500 all have fork brace mounts cast into the fork lowers, so they just simply bolt on. I'll be making some billet spacers for this one to gain more clearance over the tire on a 17" wheeled fork so that I can squeeze the Rickman fender under it, and increase the spread to the 198mm to 204mm triples that I need for opposed piston caliper clearance to spokes.

Also, a favorite on the GS forums for their i.d and o.d. diameter and 6 bolt GS pattern, late model Honda rotors... the RF rotors are 5 bolt 310mm minimal offset. the 97-98 CBR900RR Honda rotors are 310mm, 6 bolt, and the exact same bolt circle diameter as GS hubs (and old Goldwing spoke hubs??), and have a much needed greater offset than the rest at around 21.5mm or so. Custom machined spacers between the hub and rotor will still be necessary, but a fairly adapter to make.
« Last Edit: Jan 19, 2016, 22:30:41 by Chuck78 »

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline Chuck78

  • Posts: 299
    • my bike photo album
To utilize the massive hollow axle's stiffness of the RF axles, it will be necessary to swap to a 20mm i.d. bearing to fit the GS hubs, and come up with custom spacers, as well as a quest for a 20mm axle speedo drive that can be adapted to the GS hub, that came off of a bike with an 18" front wheel (1990+ cruiser or retro model will be best bet). early 90's GSXR and the RF900 speedo drives look to be the same hub interface, but are for 17" wheels, so my speedometer accuracy wil be slightly skewed. Getting custom gauge face vinyl overlays made up by Sonrier would be one option, after using GPS to determine actual speed at marked speedo needle positions...

The bearings in the GS front hubs are 15x42x13. For the modern 20mm axle that the modern forks are made for, jumping up to 20mm i.d. in the same 42mm o.d., the only standard options are a 20x42x12 (1mm skinnier), or a 20x42x16 (3mm wider)... hanging out an additonal 3mm of bearing outboard may help with the speedo drive being recessed with the rotors being spaced out maybe 10mm off the hub (exact spec once I decide if the VMAX triples are wide enough or if the calipers can be slightly milled for more clearance, vs custom Weiss Racing billet triples in 204mm width).

« Last Edit: Jan 19, 2016, 21:42:56 by Chuck78 »

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline slikwilli420

  • Posts: 191
Chuck78, I may be able to help with your triple tree issue. I have capability to make custom offset and spread trees in many designs (or can design something for you) but would need the appropriate stem before I got started. I have some more info posted on the SOHC4 Honda forum. Follow the link here to check it out.

http://forums.sohc4.net/index.php/topic,150982.0.html

You can PM me here if you have questions.

Offline Chuck78

  • Posts: 299
    • my bike photo album
Chuck78, I may be able to help with your triple tree issue. I have capability to make custom offset and spread trees in many designs (or can design something for you) but would need the appropriate stem before I got started. I have some more info posted on the SOHC4 Honda forum. Follow the link here to check it out.

http://forums.sohc4.net/index.php/topic,150982.0.html

You can PM me here if you have questions.

Nice!  I might just have to take you up on that offer, too bad I didn't hit you up before I gambled on some ebay VMX12 triples... .I'll see if I can get the stem swap figured out and if these VMAX 1200 93-05 triples allow enough clearance, but I still may require another set or two for my other 2 bikes... Otherwise I'll be needing a pair (or two) in about 204mm width, 43mm fork legs, 50mm to 55mm offset, 1" thick top, 1.25" thick bottom...

The 1980's Ninja 600 steering stem seems to be a pretty versatile one if you don't mind chopping the top and having it shaved down and new threads cut. The upper bearing surface extends from all the way down at the base of the lower bearing area increased taper all the way to the very top, so the upper bearing can slide up and down anywhere in that range and the top of the stem can be shortened.
« Last Edit: Jan 19, 2016, 22:35:14 by Chuck78 »

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline Chuck78

  • Posts: 299
    • my bike photo album
I have capability to make custom offset and spread trees in many designs (or can design something for you). Follow the link here to check it out.
http://forums.sohc4.net/index.php/topic,150982.0.html





Design 1 looks similar to the original Rickman design! Something that looks like a Honda VF750/1000F like 12 (relief cuts in the middle to lighten!) but with fork leg clamp orientations like  15 or 16 would be the ticket!  combine those features with #1 even!

A flat top with relief cuts milled into the underside would be really cool, so that I could put 10mm colored LED lampholders inset into the triple to have oil pressure, clutch, and turn signal indicator lamps (Like a Honda Shadow or Magna). 

I am liking this option a lot, and very skeptical about the VMAX triple being able to cope with wire spoke wheels and opposed piston calipers...  May have to re-sell them.  They'd go great (VMX12 trips) with Honda CB1 forks though if I wanted to run that on the GS425-475cc and just use cartridge emulators.

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline Chuck78

  • Posts: 299
    • my bike photo album
Here's a few of slikwilli Matt's works in progress, top is media blasted and ready for customer to powdercoat or polish, rest are unfinished:



I'm thinking two of these in 1.25" billet top and bottom, with the undersides milled out in webbing patterns to shave weight, that would be my choice... Maybe two or 4 extra holes jetted through the bottom between the fork stanchion holes and the steering stop area (I would add stops, need some chunks of billet cut and drilled/countersunk by you though, I'd position them and drill/tap into lower)

« Last Edit: Jan 16, 2016, 00:52:21 by Chuck78 »

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline Chuck78

  • Posts: 299
    • my bike photo album
Maybe drill in some indicator lamps like these in some Honda VT750/VF750 models:

I think those were 41mm for superhawk/cbr600f2/f3 forks, woulda ran em aside from the monster 215mm widths...

'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods

Offline slikwilli420

  • Posts: 191
Within reason I think I can accommodate any of the features from any of my designs or suggestions from you. Feel free to PM me and we can exchange info and start talking design. Original Rickman shape setup for new forks would be awesome in my opinion.

Offline slikwilli420

  • Posts: 191
Here's a few of William's (Bill's?) works in progress, top is media blasted and ready for customer to powdercoat or polish, rest are unfinished:



I'm thinking two of these in 1.25" billet top and bottom, with the undersides milled out in webbing patterns to shave weight, that would be my choice... Maybe two or 4 extra holes jetted through the bottom between the fork stanchion holes and the steering stop area (I would add stops, need some chunks of billet cut and drilled/countersunk by you though, I'd position them and drill/tap into lower)



 The first tree was for a cb750 front end swap to gl1000 and turned out really well. As an aside my name is actually Matt, the slikwilli thing was just a stupid handle I came up with a long time ago and it has been my go to for almost any forum.

Could definitely work out a way to add indicator lights for your application.

Offline Chuck78

  • Posts: 299
    • my bike photo album
Triples
« Reply #49 on: Jan 19, 2016, 21:31:56 »



Well the VMAX 1200 43mm ebay triples arrived, and they are very very sweet looking aluminum pieces for sure. Unfortunately the steering stem was a bit too long as I suspected (figured I'd have to modify & swap the 86 Ninja stem anyways), BUT they're 195mm spacing & the calipers are practically touching the spokes...  I think I'll shelve them and look for a sacrificial caliper to mill down for a thickness test, or search for a sliding single sided 2 or 3 piston caliper that fits these mounts, and run that on the GS425-475cc, as I can run the VMX12 triples on a Suzuki GS frame with a generous spacer (4-4.5mm) under the lower bearing to make the stem length work.


Soooo...... for the Rickman...custom triples from Matt it is!!!


'77 GS750 920cc, 4-1, GS1100E swinger, 18" Sun rims, Fox Factory Shox, twinpot dual disc, CR31, Yosh cams
'74 Rickman VR250MX
'99 Kawasaki KDX220 rugged terrain ripper
PROJECTS:
'77 Suzuki PE250B
"Pure Enduro" trail beast, ported, Wiseco, TüBliss, Fox Factory Shox/RaceTech
'76 Rickman CR GS1000-1120cc roadracer, Yosh cams&4-1, RF900R fork, Works piggybacks
'79 GS425 489cc Formula 500 racer, Tempter cams, GS650 forks, twinpot brakes, DID rims, GS1100E swinger, Fox Factory Shox
'77 GS550's 650-740cc susp&brake mods