Build Sheet Details for Randakk’s Supercharged GL1000. Vintage Honda Performance!
Randakk’s RC-003 Supercharged GL1000 …Current Incarnation
Details on Randakk’s Vintage Honda Race Sponsorship
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Randakk’s RC-003 Supercharged GL1000 Features these Randakk Products:
Brief Point-of-View Video Captures the Intoxicating Whine of a Blower!
Randakk and RC-003 in action at Virginia International Raceway
Photo by Kuang-Ming Liu
Previous Incarnations: with Proprietary Dual Weber IDFs Setup (left) – Randakk Supercharger and 4-into-4 Megaphones (right)
Pictured above is my 1975 Honda GL1000 Endurance Special RC-003. This cafe racer is a bit out of the ordinary from the normal mods/rockers idiom. It was created with nods to both Rollie Free (don’t ask!) and Don Garlits. Probably one of the best-handling and swiftest GL1000s ever, this bike is Randakk’s Cycle Shakk’s test mule for R&D on high performance products for the GL1000. Many items are under development. For those who’ve criticized me in the past for being a GL1000 purist snob, your apologies are accepted!
This bike has achieved much notoriety since its original creation in 1999 by my pal Mike Barone. Heavily reworked by me, recent accolades include: Vintage Motorcycles On-line as “Bike of the Month” (February, 2009 edition). It was also the Naked GoldWing Club’s “Bike of the Month” (November, 2010).
This bike represents my vision for the GL1000…and the design direction Honda could have taken with the original GL1000. True to the original sporting inclinations Honda engineers pursued, this bike has it all: handling, performance and comfort. In the hands of a skilled rider, this bike is a track day and twisty road demon.
All-out speed was not the goal. Instead, I aimed for a balanced performance combination that would deliver an engaging riding experience for a skilled rider. I consider this bike my Gentleman’s Express…artful, yet deceptively fast…a modern-day Brough Superior SS100. This is the bike Lawrence of Arabia would ride if he were alive today. But, unless you’re Jay Leno, a real Brough is beyond the reach of ordinary mortals …click here for information on the real McKoy.
I have attempted to avoid going overboard on this bike, but I may be losing that battle. The main focus is on function – not fussy attention to finish details. However, I happen think it looks great…very purposeful. The pipes are especially stunning. Setting aside the blower set-up, my bike could be duplicated at fairly reasonable expense by many enthusiasts.
This bike handles extremely well given its size and vintage…suprisingly nimble. Very predictable, neutral steering inspires confidence.
- Starting point – stock ’75 GoldWing (very high serial number)
Front fender: Ducati early model 750SS
- Front fork springs: Race-Tech
- Steering head roller bearing upgrade
- Stainless steel braided brake lines by Russell
- Later model GL1000 driveshaft / universal joint / zerk fitting upgrade
- Dyna/S electronic ignition
- Dual Weber 40 IDF conversion: click here for details
- V-rated tires.
Custom Paint by Dennis Stickney
Color: genuine Ferrari Rosso Corsa red
Custom Hand Crafted Aluminum Side-Covers by Evan Wilcox – “Salt Flats Finish”
Hand Formed Metal
3001 Mill Creek Road
Ukiah, CA 95482
Randakk’s electric fuel pump (special prototype):
NGK Iridium spark plugs
Randakk’s Amazing Grips
K&N Air Fuel Monitor (great tuning aid!) & Stewart Warner Boost Gauge
- Hotter Coil (Pertronix FlameThrower: 0.6 ohms, 45,000 Volts …epoxy filled for vibration protection)
- Accel spark plug / coil wires
- Pertronix Ignitor II electronic ignition coversion – with “adaptive” dwell logic microprocessor
- Pertronix Rev Limiter
Special thanks to Ken Sperry and J.R. Luksik for their assistance on this special ignition!
Heavy Duty Barnett Clutch:
Friction Disk Set: #HPK-18 (includes 9 disks…only 8 are used)
Disk Clutch Plate Set (6): #401-35-078024 (same as old Barnett number #HP-24-20)
Heavy Duty Spring set (6): #MT-15-6
OEM damper plate retained in center position
Use new Honda clutch cover gasket: #11393-371-306
Use new Honda clutch shaft oil seal: #91202-KFL-841
’77 clutch lever, ’77 clutch perch and ’77 left handlebar switch (extra leverage of longer lever reduces clutch lever effort)
Now running CRG Supersport Clutch Lever:
CNC machined billet construction
Ball bearing pivot
Variable leverage ratio
Ball / spring / detent on-the fly large cable adjuster
For short spirited rides, I prefer this modified Triumph Thruxton seat with integrated tail cowl
I also commissioned this heavily customized Corbin leather seat…ideal for longer rides!
Flanders Superbike handlebar with CRG Hindsight / LS mirror
Randakk’s Upgraded GL1000 Front Master Cylinder: click here for details
Upgraded Brake Setup:Stage II Fishhead Big Brake Conversion with Lester mags (19″ Front/18 Rear”)
Front: 310mm discs and dual 6 piston Tokico calipers
Rear: 296mm disc with underslung 2 piston Tokico caliper
Stage II Fishhead Big Brake Conversion sourced from:
Fischer Vintage Cycle
856 York Street
Hanover, PA 17331
Phone: (443) 929-2824
Daniel Fischer email:email@example.com
VDO oil pressure gauge
Voltmeter robbed from an unknown Honda donor
Randakk’s standard oil filter conversion kit to allow “spin-on” filter:
Since the addition of the supercharger, I’m now running a special oil filter adapter (to permit oil cooler) created for me by Bob Hagerman available here. Cooler is heavily-modified unit from ’82 Honda CB900F. Also running a Think Automotive competition oil cooler thermostat (Mocal model #OT/2F-8JIC) connected via Aeroquip hoses with 8AN fittings.
Randakk’s High Performance Fuel Filter: click here for details
Shinko V-rated tires
Centerstand geometry tweaked for better cornering clearance
Honda CBR1000RR front and rear footpegs and hardware (modified)
Harley late model Sportster taillight and license bracket. This really cleans up the rear of the bike visually.
Superbrace fork brace
Race-Tech front shocks with cartridge emulators
Wilber’s competition rear shocks