RG 500 Gamma

Suzuki RG500 Gamma
(Article from Cycle Magazine, December, 1985)

Irresistible. The Suzuki RG500 Gamma is irresistible! Standard equipment should include the Riders Rites for Absolution for acts soon to follow. The rider herein cannot be held responsible for acts committed as an accessory to the Suzuki Gamma!

Raw numbers first indicate the Suzuki Gamma’s spellbinding qualities. With its reservoirs for gas, oil, coolant and adrenaline all topped off, the RG weighs 406 pounds. Given its 95 rear wheel horsepower from 30.5 cubic inches, the 500cc Suzuki Gamma has a horsepower-to-weight ratio in league with the strongest one-litre Superbikes of not only its day, but the Superbikes of today! Clean up the Gamma’s jetting, and would likely be into and through V-Max territory quicker than you can say “still too rich”.

Lightness sharpens the edge of the Suzuki Gamma’s horsepower. V-Max power is a bludgeon with a velvet cover that wallops you forward with unending force. RG500 Gamma power is different; it has the quality of an arrow shot from God’s own crossbow – instant and direct.

Run the Suzuki RG past 7000 RMP and the space ahead collapses around your helmet; here does something more than become there; here is there! Everything the RG500 Gamma does, it does quickly. The Gamma’s geometry tucks the front end back more severely than any production street motorcycle in our collective experience. The head angle is 25 degrees, 10 minutes, tail a steadying 4.4 inches. the squat front end rolls on a 16-inch wheel, and the wheelbase measures 56 inches. So faithful is the Gamma to the rider’s body language that, should he roll his eyes upward, he thinks the Suzuki RG500 would lift off and fly. Maybe the only thing the Gamma doesn’t do is respond directly to brain waves

Park the RG500 after that first brief ride – which is nothing less than an invitation to criminal activity -and you’ll marvel at how close conceptually this street-going Suzuki is to a real RG racer. Suzuki RG hallmarks abound: an aluminum alloy (aluminum, magnesium, zinc) frame and a two-stroke, square four engine, with upstairs/downstairs banks and basement gearbox, rotary-valve induction and power-valve-and-chamber exhausts. The street Gamma shares almost every conceivable piece of sports-spec hardware with a half-dozen or so supreme road-blasters inside and outside the Suzuki range. Still, the Suzuki RG500 Gamma is a racer-replica in concept only; to understand that all you need to do is look at a pure racing RG500 Suzuki, which sized like a 250, makes 100-130 horsepower, and has a power-to-weight ratio of about two to one.

Despite the engineering department’s skillful and resourceful massaging, the Suzuki Gamma’s output curve still resembles a spike. Imagine a motorcycle that whistles along at 6500 rpm making 37.5 horsepower, and then in a single shriek doubles its output and more, reaching almost 70 horsepower at 9000 rpm. That’s 37 horsepower concentrated in a single snap across 2500 rpm. And frankly folks, we wouldn’t have the Suzuki RG500 Gamma any other way!

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STEP INTO PERKY’S SUZUKI GARAGE

Hi again! Just thought you might like to look at a few pics of some of my Suzuki motorcycles…and others too :)

perrys rg500

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SUZUKI RG500 GAMMA

“You see judge, this motorcycle is, well, enchanted. Sounds crazy, but this Gamma is an ETM, Extra Terrestrial Machina, an alien blue and white ray, darting, ricocheting and beaming from place to place in the Slumbering land of Fifty-Five. Sir, one really has to wonder whether a rider uses the 500 Gamma to open difficult roads with surgical precision—-or whether the Gamma mysteriously and magically uses the rider as a witless tool to play its own amusing road games. What’s that your honor? I’ve been reading too many Stephen King thrillers where runaway lawnmowers massacre unsuspecting suburbanites?

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Evolution of Gammagir1′s RG400 Gamma

Evolution of Gammagir1′s RG400 Gamma This is what
they looked like when I bought my two RG400 Gamma’s

From Adjustment Tech in Omemee, Ontario..these bikes were imported from Japan

The bonus of Japanese chassis’s are: Fuel guage on the clocks, “pass” button
on control pod that flashes headlight to signal a pass, on-off switch on pods
to turn off headlight, integrated front turn signals

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RG500 Performance Transmission

This is a drop in replacement for the stock RG500 transmission. This transmission solves several of the classic problems of the stock gearbox.

First, it is more robust. It has been designed with strength and long lasting durability as it’s foremost characteristic. High quality, high strength materials and material treatments have been employed to make this, by far, a superior transmission assembly. The material selected is SAE 4340 nickel-alloy steel. Heat treated and tempered back to Rc 34 and gas nitride hardened to a .30 mm deep case.

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History of the RG Racer

1. 1974 RG500
The basic configuration-water cooled, 2-cycle, square four rotary disk valve-
remains the same today. The auspicious start of the machine made to be
remembered.

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Suzuki RG500 Gamma Articles

Suzuki RG500 Specs:
498cc
2 Stroke Sq. Four
406 lbs Wet
4.5/1.3 Gal Tank
279/72 Kms Range
6 Speed Tranny
Rotary Valves
28mm Flat Mikunis
7.0-1 Compression
96 Horsepower
110/90 16 F Tire
120/90 17 R Tire

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Riders And Writers

Suzuki RG500 Specs:
498cc
2 Stroke Sq. Four
406 lbs Wet
4.5/1.3 Gal Tank
279/72 Kms Range
6 Speed Tranny
Rotary Valves
28mm Flat Mikunis
7.0-1 Compression

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RG500 Gamma and RG400 Gamma Differences

1. Carb slide needle and main jetting: 400 = #135 , 500 = #120
Keep your 400 needles and jetting, it’s better (any other comment here may be entered).

I believe the 135 jets are the restriction on the 400.I know Paul Lewis went as lean as 100′s and found a great difference. I think he altered the needle height too though (you reading this Paul?) Someone also told me they find the 400 needles to be a bit crisper at lower revs so it might be best to keep them. (Added by Kevin Wooldrage)

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SUZUKI RG500 GAMMA SPECIFICATIONS

This is the specifications of Suzuki RG500 Gamma, including:

  • PERFORMANCE
  • ENGINE
  • TRANSMISSION
  • CHASSIS
  • ELECTRICAL
  • INSTRUMENTS

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Suzuki RG500/RG400 Gamma Body Kit

What’s in the Kit:

Everything that’s depicted on this page with the exception of the “Anodised Aluminium Mesh Inserts” for the tail section. We will however include the Aluminium Mesh Inserts in their raw (un-anodised) state.

Construction:

  • White Gellcoat shell
  • Chopped strand fibreglass matt.
  • Inside panel areas finished with fibreglass tissue.
  • All stock mount’s and mount points replicated.
  • The supplied product is ready to paint.

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