Ergonomics: Tech Talk with Simon Crafar 

More to come!

Man you ruined it lol

No, this time it was enunciated correctly. He used to say it like that.

Thanks now it stick in my head forever...

999%

BEST serie in the channel. I LEARN a lot and got answers that no one could have give. 👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻

I doubt Akrapovic develops any of the exhaust. I bet all the factory teams creates the exhaust in-house so they can keep engine performance secrets within the factory. I'm sure all they do is slap on the Akrapovic name since they pay sponsorship money. No way in hell HRC would allow SC-Project (Repsol Honda) or Arrow Exhaust (LCR Honda) to obtain one of their engines so they can tune the exhaust.

@@pokerpariah you sure mate? What about the last time yamaha used new exhaust? Do you think that was yamaha who built it? Not akrapovic? I think they have non disclosure agreement between them and each team... sure bikes factory can formulate their own exhaust.. but i think the experience and tech akrapovic has for exhaust system is way more superior than the bike factory made.. imo

@@kampfret No way Akra built that and all other exhaust for Yamaha. And no, I do not think Akra has better knowledge than a factory for creating exhaust for a prototype engine where the engineers are under time constraints and have specific directions. And it's time consuming and cost restrictive to fly exhaust back and fourth from Slovenia to Japan and vice versa. Here's another example : Petronas Yamaha is sponsored by Sakura exhaust. Monster Yamaha is sponsored by Akra. If you look closely at pictures of the exhaust they are exactly the same. Same wielding points, same design, same pebble guards. The same goes for the HRC bikes.

@@pokerpariah that's why i want simon to talk about it.. to give us some insight of how it being develop and choose.. factory steet bike seems using akra for their standard exhaust.. that's why i guess akra also develop the exhaust for motogp..

@@kampfret how fool you are factory are stickering different exhaust manufacturer company as a sponsor and you expect from them to disclose the reality what jerry has said is true all the factories develop exhaust system by their own but its different in production bikes championship like World SBK , BSB here exhaust company actually makes for them

I agree. I like suzuki bike

Petronas yamaha bikes are also nice

Motogp bikes ranked based on looks 1. Suzuki 2. Yamaha 3. Honda 4. Aprilia 5. KTM 6. Ducati

Sound best too

I am so thinking about getting a GSXR after see there colour scheme it’s incredible just love it

Then you're missing out

He is an ex World Superbike, and MotoGP rider, and became an Ohlins tech in GP after retirement.

@@bremCZ Damn.

Check his "motovudu" youtube channel.

He won on a Yamaha

He is the official trackside commentator for motogp commentator team too, depends on if your local TV has their own commentary team or not if you will hear him on race days.

i think the effect of standing isn't to lower the center of gravity as much as to bring it forward as when standing the weight is all going through pegs which are mounted further forward on the main frame rather than the seat which is on the rear sub frame helping keep the front end down

No he's right because it has to do with the contact points of that CG. The CG is broken up through all the contact points, seat, feet, legs at tank and hands; anything that makes contact with the bike. The effect of that weight, the weight plus the moment arm of the rider, in comparison to the CG of the machine. The sum total is the contact point weight times the shortest right angle distance to the CG of the bike via the various contact points. When going down a straight, there's going to be, most likely, no vertical downward weight via the hands during acceleration. If anything the rider will be holding on, so there if force upward and back. But if the rider relaxes his hands and put weight on the tank, he just transferred some of his weight to the tank. Although the tank is higher than the seat, it is actually at a closer distance than the seat and would, through a force diagram, provide a shorter distance than the seat. Hence, being a smaller overall affect. Similar, with the foot pegs, not perfect but better than the seat. The rider is actually balancing the need for aerodynamics vs weight transfer vs relaxing the arms/upper body. To help this issue is exactly why they started adding wings on the front of the bike. To create front end down force while sacrificing a little bit of aerodynamics, drag.