TopGear covers Rob Dahm’s otherworldly 4 rotor RX-7

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The one restrict is your creativeness. The one restrict is your ambition and dedication. Corny motivational one-liners apart, when pursuing your goals, the one factor stopping you is your need to make these goals a actuality.

For some, the dream is a home or a brand new life in a distinct nation, however for some formidable tenacious petrol-heads like Rob Dahm, the dream is to have a hand-built, all-wheel-drive, four-rotor Mazda RX-7.

Only a few vehicles are as noteworthy as absolutely the monster that’s the four-rotor RX-7. From the notoriously spectacular design of the four-rotor motor to the intricate all-wheel-drive Frankenstein drivetrain and transmission, few come shut.

The usual RX-7 encompasses a twin-rotor Wankel engine. Whereas it is not uncommon to see a number of rotors in manufacturing vehicles, three rotors are often the best quantity. 4-rotor engines are absurdly complicated and complex items of engineering that aren’t created by merely becoming two twin-rotor motors collectively on one eccentric shaft.

Rob Dahm

Regardless of the extraordinary design and manufacturing course of concerned in making a working four-rotor, the rewards are greater than sufficient to justify the fee and labour that would value north of R500 000 if you happen to requested a store that specialises in constructing these beastly engines. 

The “common” four-rotor presents energy figures north of 745 kW with unbelievable quantities of torque. Wankel rotors are already very vulnerable to screaming their lungs out, however the four-rotor engines must take it to a complete new stage boasting a ten,000 rpm restrict being the usual for a lot of four-rotors. 

4-rotors are the intense. The whole lot about these engines borders on the best setting conceivable, the vehicles they’re positioned into often comply with go well with. GT vehicles, prototypes such because the illustrious 767 and 787 B or outrageous ardour constructed “road” vehicles, the 4-rotor sitting within the higher echelons of automotive design and engineering. 

Rob Dahm

Rob Dahm’s RX-7 is a particular case even inside the 4-rotor catalogue. From the astonishing motor to the unenclosed GTR sourced transmission that sits proper subsequent to the driving force, the spectacular all-wheel-drive system with specifically constructed elements throughout, this RX-7 -if you possibly can even name it that- is in a league of its personal. 

High Gear has debuted a brand new video sequence with Rob Dahm on the helm. The sequence seeks to shine a lightweight on the wonderful vehicles throughout America which can be the true embodiment of the phrases “particular” and “distinctive” The primary video has already aired with Dahm’s RX-7 being the primary automobile within the TopGear highlight. 

Watch the total video on YouTube.