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General Category => General Discussion => Topic started by: John A on April 09, 2021, 12:32:29 PM

Title: Transverse V twins
Post by: John A on April 09, 2021, 12:32:29 PM: https://youtu.be/vG1A23m25-w
Some old ones as well as Guzzis
Title: Re: Transverse V twins
Post by: Don G on April 09, 2021, 02:51:27 PM: Love that 1929 IZH-1, looks like a Harley VL and a Nimbus had an affair.... DonG
Title: Re: Transverse V twins
Post by: Siamese on April 09, 2021, 04:25:17 PM: Quote from: Zoom Zoom on April 09, 2021, 12:38:56 PM
I guess it depends on what you consider transverse. :popcorn:

ZZ

I didn't see any in the video that weren't transverse. You?
Title: Re: Transverse V twins
Post by: cloudbase on April 09, 2021, 05:03:39 PM: Quote from: Siamese on April 09, 2021, 04:25:17 PM
I didn't see any in the video that weren't transverse. You?

I did.
Title: Re: Transverse V twins
Post by: Moto Vita on April 09, 2021, 06:29:37 PM: Apparently some are considering cylinder orientation rather than crankshaft orientation, which begs the question: What would call a single cylinder engine mounted in the same direction as the bike in the video?
Title: Re: Transverse V twins
Post by: Kev m on April 09, 2021, 06:43:36 PM: Oh sweet Jezus not this argument again. We just went through it again on ADV Rider.

I know it's tempting to mislabel a motorcycle engine (mostly just twins) by the orientation of the cylinders, but like every automotive manufacturer I'm going with crankshaft/output shaft orientation.

If the crank/output is inline with the chassis it's longitudinal.

If it the crank/output is perpendicular to the chassis, it's across/transverse.

Would you call a modern JAPanInc. or British L3/L4 engine or hell a parallel twin longitudinal?!?

Hell I didn't watch the whole video but even the video called one of them longitudinal in the first few bikes.
Title: Re: Transverse V twins
Post by: Mr Revhead on April 10, 2021, 01:10:43 AM: Quote from: Siamese on April 09, 2021, 04:25:17 PM
I didn't see any in the video that weren't transverse. You?
Well, technically none of them are transverse. The cranks are all in line with the fore aft axis
Title: Transverse V-twins
Post by: Brand X on April 12, 2021, 09:30:04 PM: https://youtu.be/vG1A23m25-w

At least what he called the video. Either way, interesting stuff.