Pedrosa chassis woes

<div class='quotetop'>QUOTE (Babelfish @ Apr 24 2010, 12:01 AM) <{POST_SNAPBACK}><div class='quotemain'>I just asking because I don't understand. Sorry to bother you.

That said, you do make an effort to avoid any questions raised.
Until now I was living under the impression that all race bike swingarms are designed with absolute minimal horizontal flex and as little torsional flex as possible. Both, I thought, were a necessity to a fast bike. You tell me it's not so, the world has changed and the third fastest bike at Qatar use a rubber swingarm and refer to motoLiam as an expert!
AFAIK, both front and rear suspension need a certain amount of horizontal / lateral flex.  This allows some suspension action when the bike is leaned way over on it's side. When cranked over ~60degrees to the vertical, the traditional shocks and springs are largely operating in the wrong plane.  You need lateral deflection (preferably, some damping as well) in the swingarm and forks to allow the tires to properly track bumps in the tarmac.  As with conventional suspension, unsprung mass is a concern; it's probably best to place the flex as close to the wheel hub as possible.  At the other extreme, large amounts of torsional flex in the chassis may cause bumps encountered at full lean to drive roll-axis energy into either end of the chassis, presumably causing Bad Things.  I wonder of Peddles is having more trouble than others simply because he's so small, and is less able to manually dampen any unwanted chassis motion?

Ironically - because the Aprilia chassis Biaggi is riding is so closet to factory spec in terms of rigidity
it doesn't gel all that well with the relatively crappy Pirellis which are designed to work with
comparatively flexy streetbike chassis - which is why (so say WSBK commentators) he ends up
going wide so often.

<div class='quotetop'>QUOTE (mylexicon @ Apr 22 2010, 09:47 PM) <{POST_SNAPBACK}><div class='quotemain'>Can't help you. I only engage in conspiracy theory (aka common business practices) when they are true.

I don't quite "get-it" with the volcano and not being able to fly to Japan.

Qatar is to the South East of Europe and Iceland
The Ash-Cloud impacted primarily North West European & Scandinavian flights
Japan is again South East of Qatar
Spain did not cancel all flights

So if the Ash-Cloud wasn't in the way between Qatar and Japan, maybe it was Honda, that scuttled Motegi for April

Maybe someone can explain or correct my geography

<div class='quotetop'>QUOTE (ptk50 @ Apr 26 2010, 03:21 PM) <{POST_SNAPBACK}><div class='quotemain'>I don't quite "get-it" with the volcano and not being able to fly to Japan.

Qatar is to the South East of Europe and Iceland
The Ash-Cloud impacted primarily North West European & Scandinavian flights
Japan is again South East of Qatar
Spain did not cancel all flights

So if the Ash-Cloud wasn't in the way between Qatar and Japan, maybe it was Honda, that scuttled Motegi for April

Maybe someone can explain or correct my geography
The ash cloud at the time of the airspace ban was quite a bit north of the uk and blowing north-east over tha Balkans. ironically the ash did not start to blow over the uk until the ban was lifted. I think it was a political stunt that backfired.

The motogp equipment did get to Japan, it was the riders press mechanics ect that had the problem as most fly from european hubs like London and Amsterdam.

As Roger says the bikes etc were there it was getting the teams,personal,TV,Media ppl there etc lots were in Europe and Euro airspace was locked down with no time schedule on it opening again at the time

<div class='quotetop'>QUOTE (Talpa @ Apr 26 2010, 11:47 PM) <{POST_SNAPBACK}><div class='quotemain'>yes indeed, camier is suffering the same problem which was very evident at assen last weekend. Pirelli have been very lazy in wsbk with no competition, as is bridgestone in motogp nowadays. Another flaw in the one tire rule.

Of course the racing is awesome in wsbk, but it was before the one tire rule as well. Might be just as well for the Japanese in wsbk, with aprilia and BMW having such exceptional machines adding specifically developed rubber from Michelin or Dunlop would no doubt make them very difficult to beat........

Surely the big h couldn't be influencing here as well......what do you think jum??
I was against the one tyre rule, competition keeps the standards high. jumkie was all for the control tyre, Still think its good compa ? I guess there's no way of telling now if the sport has been held back because of it or not. Obviously it's more apparent in wsb than motogp.

<div class='quotetop'>QUOTE (chopperman @ Apr 26 2010, 10:46 AM) <{POST_SNAPBACK}><div class='quotemain'>The ash cloud at the time of the airspace ban was quite a bit north of the uk and blowing north-east over tha Balkans. ironically the ash did not start to blow over the uk until the ban was lifted. I think it was a political stunt that backfired.

The motogp equipment did get to Japan, it was the riders press mechanics ect that had the problem as most fly from european hubs like London and Amsterdam.
Hi thanks,
I "get" both of your explanations - still think it was wimpy - Spain was open and Europe does have good train services, but if all the big Mojos and also the hangers-on have to fly and won't combine transportation means - I guess that's a reason to postpone.
Nothing to do with MotoGP, but I flew out of Heathrow heading west on Monday April 12, 2010 and a few years back flew out of Washington DC eastbound on Sunday Sept 9, 2001 - so I guess I've been lucky with those flights and their timing.

<div class='quotetop'>QUOTE (ptk50 @ Apr 27 2010, 12:08 AM) <{POST_SNAPBACK}><div class='quotemain'>Hi thanks,
I "get" both of your explanations - still think it was wimpy - Spain was open and Europe does have good train services, but if all the big Mojos and also the hangers-on have to fly and won't combine transportation means - I guess that's a reason to postpone.
Nothing to do with MotoGP, but I flew out of Heathrow heading west on Monday April 12, 2010 and a few years back flew out of Washington DC eastbound on Sunday Sept 9, 2001 - so I guess I've been lucky with those flights and their timing.
I still can't understand why flights going west were banned, that was heading away from the problem seeing the ash was blowing east. The airlines are now talking about suing the british government over this.
i hear what you're saying about catching a train to spain then flying from there. I suppose it's all about other commitments and time scales.

Maybe he did say this machine is isht to ride

http://www.motogp.com/en/videos/2010/Europ...MotoGP+at+Jerez

<div class='quotetop'>QUOTE (chopperman @ Apr 26 2010, 03:54 PM) <{POST_SNAPBACK}><div class='quotemain'>I was against the one tyre rule, competition keeps the standards high. jumkie was all for the control tyre, Still think its good compa ? I guess there's no way of telling now if the sport has been held back because of it or not. Obviously it's more apparent in wsb than motogp.
I was for the control tire with the condition/naive hope that they wouldn't give anybody preferential treatment on the spec. Seeing that they developed a Rossi-spec tire, im not so keen on the idea. Haha.

Regarding the HRC issue, well, some [expletive]of a bike Dani has developed, eh?

Oh... I hope Honda are not listening, but I know the easy way to make DP26 competitive again. He just can't load the rear wheel enough to heat up the hard Bridgestones, he's too light. He can almost manage it with a full tank, but fades away as soon as the tank gets lighter. Solution?
Just add 15 Kgs of ballast right under his tiny balls... That's it!
No kidding... Honda will never acknowledge this tip, I know...

<div class='quotetop'>QUOTE (J4rn0 @ Apr 27 2010, 04:00 PM) <{POST_SNAPBACK}><div class='quotemain'>Oh... I hope Honda are not listening, but I know the easy way to make DP26 competitive again. He just can't load the rear wheel enough to heat up the hard Bridgestones, he's too light. He can almost manage it with a full tank, but fades away as soon as the tank gets lighter. Solution?
Just add 15 Kgs of ballast right under his tiny balls... That's it!
No kidding... Honda will never acknowledge this tip, I know...

Toni Elias tried riding with ballast last year, the idea is already there. You can bet if they think its useful they are either already trying it, or already have tried it with Dani

<div class='quotetop'>QUOTE (Tom @ Apr 27 2010, 04:23 PM) <{POST_SNAPBACK}><div class='quotemain'>Toni Elias tried riding with ballast last year, the idea is already there. You can bet if they think its useful they are either already trying it, or already have tried it with Dani
Toni Elias was the ballast for most of last season except Brno.

I know but of course with Elias ballast wouldn't work, he shifts his weight too much to the left and right, unnecessarily...
No no, they should give it a real try with Pedrobot

<div class='quotetop'>QUOTE (J4rn0 @ Apr 27 2010, 04:47 PM) <{POST_SNAPBACK}><div class='quotemain'>I know but of course with Elias ballast wouldn't work, he shifts his weight too much to the left and right, unnecessarily...
No no, they should give it a real try with Pedrobot
I think pedro should race moto2 instead, it's not as if he is going to be a serious motogp wc contender is it !

<div class='quotetop'>QUOTE (chopperman @ Apr 27 2010, 03:56 PM) <{POST_SNAPBACK}><div class='quotemain'>I think pedro should race moto2 instead, it's not as if he is going to be a serious motogp wc contender is it !
Best suggestion yet.

<div class='quotetop'>QUOTE (Bootsakah @ Apr 27 2010, 05:49 PM) <{POST_SNAPBACK}><div class='quotemain'>Best suggestion yet.
Hey boots, how it going mate ?

<div class='quotetop'>QUOTE (chopperman @ Apr 27 2010, 08:56 AM) <{POST_SNAPBACK}><div class='quotemain'>I think pedro should race moto2 instead, it's not as if he is going to be a serious motogp wc contender is it !
ah, maybe they should give Nicky a call. Pedro did so much better when he had him around not to develop.

<div class='quotetop'>QUOTE (chopperman @ Apr 27 2010, 08:56 AM) <{POST_SNAPBACK}><div class='quotemain'>I think pedro should race moto2 instead, it's not as if he is going to be a serious motogp wc contender is it !

Hey, don't joke. He'd get to use completely different tires, and he could probably run his own team. He'd smoke everyone in Moto2, and as long as he could get some quality sponsorship, he could make nearly as much money while calling the shots himself.