How do rear ride height devices work? | Tech Talk with Simon Crafar

I always looked at motorcycles as fairly simple machines. After watching so many of these tech talks, I'm not so sure anymore.

I love this gentleman... hes fun and knowledgeable, as well as polite.

Now I can sleep well

Is it true that this device is banned for 2024 season?

Simon always gives us THE BEST MotoGP content. Great work mate !

Similar to a dropper post on a mountain bike in its basic design. Much like a shock that is able to lock out usually via internal valves. Another great video, Simon.

Great job Simon, I have been wondering about this. Thanks for covering it. Its amazing how simple this solution is, now, how do they do the front ride height?

As always very interesting!!! Motogp is fun to watch also because this tech explanation. You should also do for every track an onboard lap to explain the Layout!!

Such a watchable, likeable guy 🙌🏻🙏🏻

Awesome! Now explain the front ride height

@MotoGP could Simon do a Tech Talk about engine brake how it works and if engine controls the RPM when rear lifts up to prevent rear slideouts when it retouch ground?

Once again an outstanding explanation in simple terms and diagrams. Thank you Simon.

Thank you. Love seeing how these thing actually work.

Do we not have the budget for a narrated animated video?

Wish I could see one out of the bike

More like a steering dampner

More like a hydraulic seat post on a mountain bike perhaps?

Love Simon, but I still don't quite understand? If the rear spring is so heaving, and you need the leverage under acceleration to compress the rear.......then how do they compress the rear on the starting grid?

Awesome, keep it up

I don’t know how much does Simon makes, but he deserves a raise

That was very enlightening and interesting! Great clear diagram also 😊 Thank-you again Simon 👍

Patent engineers be running to their cad shop lol.

Makes sense.

Love these little tech talks. Short sharp, and gets the point across. Keep them coming

Give this man a show of his own!! 👏🏾 👏🏾 👏🏾

Oh, so that's how it works! Excellent vid, as usual. Thank you.

So dropping the ass* on acceleration and straight line for stability (like drag bikes) giving more traction to the tires by extending the wheelbase (albeit +5mm/+20mm) and then lifting the ass* for cornering which in tails rake reduction geometry which will shorten the wheelbase (-5mm/-20mm) quickening the steering angle into the corner.

Simplistic idea from a engineer thinking in mechanical terms from industrial machinery… kudos.!


The original GSX-R had 18” rims, good straight line stability, the original Fireblade had 16” front 17” rear, great for cornering but both of these ideas suffered, do the compromise was 17” front/rear best of both (well near as) that’s why these GP bikes run 16.5” rims which again gives better cornering and still great line speeds.

(Sorry, maybe a bit to much info for some from years of trashing bikes on circuit days)

Subtitles will be great for yhe channel.

Awsome, thanks simon

Wrong design of the linkage! 😏

Like a high tech dropper seat post on an mtb

cHHEEERRSS

Simon comes through again! Good job! Looking forward to Mugello!

Simon, amazing job, as always. Love the insight you provide. 20-40mm only?! Man it looks so much more dramatic on TV, more like 80-100mm in some of quatararo’s exits. The back just drops. We used to hear about how “squat” on corner exit was a big tuning issue in production bikes. But I guess when the geometry is controlled and you can use it on a specific corner, like coming onto a straight as opposed to two close, connecting corners, it’s a big advantage for acceleration

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Face diaper-free! 👍👍👍

Guys, this is cool. But please can we have an in-depth explanation with 3d animations in it so we can understand better?

I love your tiktok haha

Thats quite interesting to know. i always thought they have some sort of hydraulic ram on top of the spring that allows them to keep the same spring rate and lower the bike but was confused how this would quickly adjust back, but this makes a lot of sense, we normally lower drag bikes by increasing the link but having this actuated makes the job so much easier

Thanks Simon! You always teach us how every part of this motorcycle plenty of technology works!
Nice explanation!!

Excellent breakdown of this simple but critical device👍🏼

Finally

very helpful . thanx

Perfect!

Oh cool so it's like an office chair or a dropper seat post on a mountain bike

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👍😎🍺🍩🏍️🏍️

great drawing,Simon Crafar truly multiple of talents.

Simon feels like a 15 year old kid when he speaks in tech talk by getting all exited,
I think there are some very clever things which are in the ride height devices, may be general public will never know how it actually works in detail