From Radical Speedshop: “Probably the most highly effective and light-weight Guzzi ever…”
Radical Speedshop is a family-run German workshop with a twin-piston Italian coronary heart. The Bronolds — Stefan Sr., Stefan Jr., and Simon — construct Guzzi customs, race bikes, and manufacture elements for the world’s Guzzisti to change their very own bikes. Says Stefan Bronold, Jr.:
“Someplace down the street of being obsessive about bikes we felt the Italian heartbeat — shortly with Ducatis after which — unstoppable — Moto Guzzi…”
They’re additionally closely concerned within the European dash racing collection — previously Sultans of Dash and now the Rocket Race Membership — the place air-cooled twins from garages and workshops all around the continent compete in 1/8-mile drag races, usually throughout huge occasions like EIMCA and Glemseck 101.
In 2021, we featured Radical Speedshop’s “NOSferatu” — a heavily-modified Moto Guzzi Quota with a bored-out engine making 180-220 hp with nitrous-oxide injection — which led to “NOSferatwo,” which had a totally customized body, 1400cc Griso 8-valve engine, and NOS injection.
Now the Bronalds are again with this 1700cc Moto Guzzi “Cento Anni,” a street-legal torque monster constructed to rejoice the one hundredth anniversary of Moto Guzzi’s Mandello manufacturing unit. Radical Speedshop set a really excessive bar for the construct — but when anybody on the planet was as much as the duty, it was the Bronolds:
“The idea was to construct probably the most highly effective and light-weight Guzzi ever.”
The bike has been constructed on a modified ’74 Bellagio chassis with Wilbers suspension, Beringer brakes, Rotobox carbon wheels, and an arsenal of bespoke elements from the workshop’s CNC machine. The alloy bodywork was formed in-house earlier than the Bronolds’ buddy Herbert Franz undertook a masterpiece of airbrushing — laying down the likeness of Guzzi founders Carlo Guzzi and Giorgio Parodi, Guzzi world champions (Bruno Ruffo, Fergus Anderson, Invoice Lomas, Keith Campbell), and even the doorway of the Moto Guzzi manufacturing unit in Mandello — a job that took him 10 months!
Then there’s the engine. Although the Guzzi V-twin could look inventory on the surface, the internals are utterly customized. It’s been bored to the utmost — 108mm — and given an 11mm stroker crank for the biggest displacement attainable: 1700cc.
“It’s at 164 HP and 202NM [149 ft-lbs] torque — measured at clutch. The bike with 10 liters of gasoline weighs 168 kg [370 lbs]…”
The “Cento Anni” made fairly the displaying on the Glemseck 101 Worldwide Dash — “Europe’s Bggest Café Racer And Dash Race” — the place Stefan Sr. rode the bike to victory, beating a modified Triumph Velocity Triple within the finals! Total, it took 2nd within the Rocket Race Membership collection.
Under, we discuss to the Bronolds for the total story on their 1700cc “Actual Monster Guzzi.”
Moto Guzzi MGR1700: Builder Interview
• What class was the bike constructed to race in?
The bike wasn’t constructed for any class; it’s our private bike for regular avenue use. Constructed to rejoice 100 years of Moto Guzzi with all of the world champions, Carlo Guzzi, and Mr. Parodi airbrushed on the tank.
• What was the design idea and what influenced the construct?
The idea was to construct probably the most highly effective and light-weight Guzzi ever. Due to this fact we did a brand new crank with an extended stroke as a result of the bore is proscribed at 108mm — to have 1700cc, we should improve the stroke from 81.2mm to 92.6mm and bore from 95mm to max 108mm.
• Does the bike have a nickname?
Our race title at Glemseck 101 was “Cento Anni” to rejoice the 100-year annniversary, however most individuals referred to as the bike the “Torquemonster” and we’ve printed typically below the title #realmonsterguzzi.
• What customized work was executed to the bike?
We did the alloy tank and seat, custom-made the body from a Bellagio for higher stance, footrests, fork triples, and lots of, many different elements made in-house on our CNC machine. Wilbers suspension, Beringer brakes, Rotobox carbon wheels.
Probably the most work was executed on the engine. It value plenty of time and nothing contained in the engine case is authentic — additionally the engine instances needed to be modified. However whenever you look athe exterior of the engine, continues to be seems prefer it’s authentic.
It has a brand new crankshaft with 11mm larger hub, new rods, cast pistons 108mm bore, particular camshafts. Every little thing constructed and produced ourselves. The bike at second runs with Keihin FCR41 carburetors. It’s at 164 HP and 202NM torque — measured at clutch. The bike with 10 liters of gasoline weighs 168 kg…
Suspension is Wilbers entrance and rear. Electrics are minimal, executed by us. Brakes are Beringer and carbon wheels are from Rotobox. Full Titan exhaust system (whole weight 3kg). Airbrush is finished freehand by our pricey buddy Herbert Franz — it reveals all of the Guzzi world champs, Mr. Parodi and Mr. Carlo Guzzi, and likewise the entry of the Guzzi manufacturing unit in Mandello.
At Glemseck 101, we gained the worldwide dash and was second place in Rocket Race Membership with this bike. Worldwide Dash, these are probably the most highly effective bikes and we’re proud to win towards many sturdy bikes {and professional} riders.
• Are you able to inform us what it’s prefer to journey?
The bike is avenue authorized. Positive it desires to go quick, nevertheless it’s additionally very easy to journey on regular authorized streets.
• Was there something executed throughout this construct that you’re notably pleased with?
Positive we’re proud to have the most important air-cooled engine from a European maker. Additionally the airbrush is an art work and our buddy Herbert Franz wanted 10 months to complete it.
Comply with the Builder
Web site: www.radicalspeedshop.com
Fb: @radicalspeedshop
Instagram: @radicalspeedshop
