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  1. Understanding Compression Ratios

    ... FW Development's Ian Park, "bolt-on horsepower". Modern bike engines tend to run compression ratios in the 10:1 to 12:1 region. By way of an ... as detonation or 'knocking', and it's this that prevents engines running very high compression ratios. Compressing a gas raises its ...

    Ben Cope - 10/05/2024 - 04:15 - 0 comments

  2. The Time Tunnel - Motorcycle Speed Record

    ... 350mph. "We used two 1500cc Harley-Davidson Shovelhead engines, which had a water jacket built round them and made around 300bhp ... second 285 and third was good for top speed. At 322mph the engines were only doing 5200rpm but I concentrated on the mile markers, which ...

    Anonymous (not verified) - 10/05/2024 - 04:24 - 0 comments

  3. Toni Bou joins Marc Marquez in testing renewable Repsol fuel for Honda

    ... the desire to continue using internal combustion engines does not fade. With this in mind, steps have been taken this week in ... is out-dated by modern MotoGP standards where ‘big bang’ engines are the go-to method of finding manageable horsepower in the age of ...

    Alex Whitworth - 20/12/2022 - 16:20 - 0 comments

  4. Head to head | 2021 Honda CB1000R vs 2021 Suzuki GSX-S1000

    ... actually have quite a lot in common – they both feature engines that have previously been found in top-flight sports bikes. The ... spot the missing ponies thanks to closely placed gears and engines tuned to deliver thumping mid-range. ...

    Simon Hancocks - 08/07/2021 - 16:15

  5. Chancellor announces road tax for electric vehicles

    ... electric vehicles as the transition from combustion engines continues. The Guardian reports ... but with the transition away from internal combustion engines and towards electric vehicles underway and continuing, that number is ...

    Alex Whitworth - 18/11/2022 - 13:06 - 0 comments

  6. First Ride: 2007 Harley-Davidson Range

    ... The '07 model year bikes are in the shops now, equipped with engines that see them safely over Euro 3 emissions hurdles which until recently ... you're confused as to what's on test here, Harley-Davidson engines come in three shapes: the V-Rod VRSC 'Revolution' motors (1130cc ...

    Anonymous (not verified) - 10/05/2024 - 04:26 - 0 comments

  7. BMW reveals electric scooter

    ... Unlike existing maxi scooters with combustion engines, the concept vehicle does not have a main frame. Instead, the aluminium ...

    rgo - 10/05/2024 - 04:11 - 0 comments

  8. Top 10 Wankel engined bikes

    ... effectively ended its challenge to conventional piston engines. We all know about Nortons and Suzuki RE5s, but there has been a ... at around 30bhp from 294cc (although capacities of Wankel engines don't necessarily bare direct comparison to those of piston ...

    Visordown News - 23/09/2019 - 00:52 - 0 comments

  9. The Top 10 'Revived' British Brands and the stories behind them

    ... of lightweight offroad two-strokes powered by Villiers engines in the 1950s but by 1978 it had ceased trading. The name was bought ... premium chassis and cycle parts and Kawasaki 650 twin engines. However, as we write, although the company still has active status, no ...

    Phil West - 19/10/2023 - 17:01 - 0 comments

  10. What is a 270-degree crankshaft parallel twin and why are they so popular?

    ... in motorcycle journalism. The popularity of these kinds of engines has exploded in recent years, but how do they work, and why are they ... making it a 180-degree crank.    In these engines, there’s a full rotation of the crankshaft between each cylinder ...

    Matt Robinson - 29/01/2024 - 07:53 - 0 comments

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