the bb trackday thread.
Discussion
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
There is an element of truth to the myth.That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
Years ago, before they switched directions, if an emergency landing was called they would fuel dump before landing, and to avoid built up areas and farmland etc the area was just before Donny, occasionally it would happen a bit too late and some would hit the circuit.
doesnt happen anymore though.
The circuit itself is grippy if there is temp in the wet, its when its cold, it just doesnt provide anything!
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
How are they running "super lean" at full thrust on take off?curlie467 said:
Why do people do this?
Just because Kiyo can do it, doesn't mean mere mortals can do it, what a stupid comparison to make, completely irrelevant and stop arguing the toss!
It's actually completely on point. The point was that he suggested that Donington was lethal and stupidly slippy in the wet. It's no worse than anywhere else. Just because Kiyo can do it, doesn't mean mere mortals can do it, what a stupid comparison to make, completely irrelevant and stop arguing the toss!
The lap was shown as the rider was still doing amazing fast laps and stayed upright. If it was so slippy and lethal then he'd be on his arse, along with every other rider.
If a rider falls off whilst doing laps in the 2 minute plus range then it won't be the track that was to blame.
fergus said:
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
How are they running "super lean" at full thrust on take off?Bear in mind that there's virtually no reciprocating piston engine traffic out of a large airport like east midlands. The ones with propellors are turboprops (a small 'jet' engine - turbofan to be precise) with a prop driven off that.
There are many reasons why them dumping fuel is likely also an urban myth. Very few short / medium range aircraft (i.e. east midlands traffic) are equipped to do so (there simply isn't enough spread between mtow and mlw to make it worthwhile - you'd take the slight overweight on landing). Long range stuff yes. Even then, it's a strictly emergency procedure, and the law is very precise about altitudes and the like, unless it's a 's
t we're all gonna die' emergency (e.g. it's on fire). Generally even 'do not continue' emergencies mean some pause for consideration and setting everything up before you come back down.Edited by upsidedownmark on Wednesday 23 March 13:46
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
Why then, when you abandon your car at long term parking for a few weeks at various airports has it occasionay got a film of oil on the windscreen? That said, Donington does seem to be particularly slippy, certainly in a road car on road tyres.. It may be the particular surface, or it may be that the nature of the track layout is ill suited to getting any heat into the tyre.. but then most race tracks are a lot slippier in the wet than the road is (down to the surface one rather suspects). Track wets are a totally different matter.
Anyways, anyone doing anything over easter? change of plans means I might have a chance to get on track..
Also, having lived moderately next door to Heathrow, what's the brown spots on vehicles / conservatories about?
Who knows.. but correlation does not equal causality.
If indeed it is pollution I'd personally be far more suspicious of ground based sources. Ever followed a bus? Plus they don't get dispersed by a roaring jet exhaust from a long way up.
Anyways, donington, great track, most envious, have fun
If indeed it is pollution I'd personally be far more suspicious of ground based sources. Ever followed a bus? Plus they don't get dispersed by a roaring jet exhaust from a long way up.
Anyways, donington, great track, most envious, have fun
Edited by upsidedownmark on Wednesday 23 March 21:09
upsidedownmark said:
fergus said:
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
How are they running "super lean" at full thrust on take off?What are the plumes of what resemble the exhaust from a Black cab setting off that come out the back of the turbines during take off coming from?
dean100yz said:
Silverstone GP just been booked 20th April - will be my first time there
Anyone on here going? Not alot of spaces left
i wish i was, sylverstone looks like a great track. Ive just booked cadwell on the 26th April. Dropping back down to Inters to conquer my hatred for the place. I really hope the weather picks up just a couple of degrees by then. Anything below 10 degrees is pretty miserable and its struggling to stay above that still. Anyone know of a cheap genny or if you can hire them?Anyone on here going? Not alot of spaces left
Tim85 said:
i wish i was, sylverstone looks like a great track. Ive just booked cadwell on the 26th April. Dropping back down to Inters to conquer my hatred for the place. I really hope the weather picks up just a couple of degrees by then. Anything below 10 degrees is pretty miserable and its struggling to stay above that still. Anyone know of a cheap genny or if you can hire them?
Cadwell is mid May for me. Not been there either, heard its quite a tough one. Really want to see air on the mountain. Try use some of my old MX riding on that bit hahaupsidedownmark said:
fergus said:
upsidedownmark said:
The fuel dump thing is legend I'm afraid.. knowing rather more than is strictly necessary about the workings of those spinny things on the wing, they ain't puking fuel out the back (they actually run super lean).
How are they running "super lean" at full thrust on take off?Bear in mind that there's virtually no reciprocating piston engine traffic out of a large airport like east midlands. The ones with propellors are turboprops (a small 'jet' engine - turbofan to be precise) with a prop driven off that.
There are many reasons why them dumping fuel is likely also an urban myth. Very few short / medium range aircraft (i.e. east midlands traffic) are equipped to do so (there simply isn't enough spread between mtow and mlw to make it worthwhile - you'd take the slight overweight on landing). Long range stuff yes. Even then, it's a strictly emergency procedure, and the law is very precise about altitudes and the like, unless it's a 's
t we're all gonna die' emergency (e.g. it's on fire). Generally even 'do not continue' emergencies mean some pause for consideration and setting everything up before you come back down.Edited by upsidedownmark on Wednesday 23 March 13:46
It was raining yesterday at Donnington, and it was actually not too bad with wets on
However, I spoke with one of the Donnington guys, who confirmed that the Fuel residue theory was, as you suggested, just a rumour that seems to have been perpetuated by urban myth. The surface, in fact, is known to be not so great in the wet with cars due to their wider contact patch, but that grip deficit seems largely improved with bikes, but still provides less grip than many other comparable circuits
I was having a good evening session at Cadwell today until I low sided at Chris curve. Bike is a bit of a state but not too bad, I'll get it sorted. It was sliding but then dug in and flipped. I have a video but not sure when I'll be able to get it uploaded.
Does anyone fancy any days at donington next week with FE? 4th and 5th April £100 each.
Does anyone fancy any days at donington next week with FE? 4th and 5th April £100 each.
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