1 or 2GB compact flash card?
Discussion
I'm going to try and wire up my new DL1 on Saturday morning. Problem is, I thought it came with a flash card but doesn't....doh... and I have no time to order one off Ebay.
Can I beg/ steal/ borrow/ or buy one or two off somebody please. Tried to buy some locally but the shop assistants just look at me funny, shrug their shoulders, and say, "they went out years ago, try Ebay".
Cheers
Dave
Can I beg/ steal/ borrow/ or buy one or two off somebody please. Tried to buy some locally but the shop assistants just look at me funny, shrug their shoulders, and say, "they went out years ago, try Ebay".
Cheers
Dave
i went to the same school as Dave funny enough
I'll be down over the weekend, unfortunately I have a friends birthday to attend on Saturday night so I may have to scoot before the race, but I'll be back for Sunday (probably slightly worse for wear). If you're running a logger and would like me to help you out, can you please message me and let me know what you would like me to go over with you so I know how many drivers I'm looking for, and can make sure I understand what I need to go over with you. I'll also put together a short guide on how to run them and measure bhp at the track.
As has been said, you'll only need a small card - a minute of recording takes up around 1mb of space, so you can get (in theory) around 1000 minutes of race data on a 1gb card assuming you have just the logger and no additional sensors to log. Best practice is to keep the card clean though, and copy the data off it onto a memory stick or a computer. This just ensures that the logger will record efficiently - I've seen a few CF cards screw up in these things (must be the harsh environment), so always make sure you have a spare and your data backed up just in case.
Last point is coast downs. To enable your data to be read effectively (if you don't know already), you need to do 2 coast downs - one fast and one slow. The slow one involves finding a level bit of pit lane or paddock, and driving along it at around 5-10 mph with the logger recording. Dip the clutch and allow the car to slow to near enough a stop and then stop recording.
A fast one is then required; which involves doing the same thing on the main straight. At Brands you want to hit the record button as you're approaching the start/finish straight, then dip the clutch before the small dip just before the start line. Hold the clutch in until around 10-20 mph is bled off (2-3 seconds), and then carry on your lap (stop recording on the logger).
Then get your car weighed with you in it and some fuel, and then give this data to me. You can easily do this on one or two of your qually laps, and I can then use this to build up the data for your car and save it as a single file. You then just load this whenever you want to look at your track data, and it will show bhp and other car specific data. If this isn't done, then the power checks simply cannot be done, and calls of 'cheat' will begin to ring out across the paddock. And you wouldn't want that...
As has been said, you'll only need a small card - a minute of recording takes up around 1mb of space, so you can get (in theory) around 1000 minutes of race data on a 1gb card assuming you have just the logger and no additional sensors to log. Best practice is to keep the card clean though, and copy the data off it onto a memory stick or a computer. This just ensures that the logger will record efficiently - I've seen a few CF cards screw up in these things (must be the harsh environment), so always make sure you have a spare and your data backed up just in case.
Last point is coast downs. To enable your data to be read effectively (if you don't know already), you need to do 2 coast downs - one fast and one slow. The slow one involves finding a level bit of pit lane or paddock, and driving along it at around 5-10 mph with the logger recording. Dip the clutch and allow the car to slow to near enough a stop and then stop recording.
A fast one is then required; which involves doing the same thing on the main straight. At Brands you want to hit the record button as you're approaching the start/finish straight, then dip the clutch before the small dip just before the start line. Hold the clutch in until around 10-20 mph is bled off (2-3 seconds), and then carry on your lap (stop recording on the logger).
Then get your car weighed with you in it and some fuel, and then give this data to me. You can easily do this on one or two of your qually laps, and I can then use this to build up the data for your car and save it as a single file. You then just load this whenever you want to look at your track data, and it will show bhp and other car specific data. If this isn't done, then the power checks simply cannot be done, and calls of 'cheat' will begin to ring out across the paddock. And you wouldn't want that...
The Coast downs will be difficult at brands, as there isnt much flat circuit.
I'd have thought it better to do it on the stretch from Graham Hill along the bottom. get the car upto 50-60 and then coast down 10-15 mph with the clutch in or in neutral.
stopping and starting the logger might be a bit difficult depending where its fitted, but as long as the logger is recording, and you do it within the first couple of laps in qually it should be easy enough to spot in the graph and take readings from.
Also technically if you stop and start the logger during qually you could have lap times disallowed !!! as no data :-)
It would also be preferable if all coast downs were done at the same point on the circuit from a consistency and safety point of view.
I'll get JR to decide something before qually
G
I'd have thought it better to do it on the stretch from Graham Hill along the bottom. get the car upto 50-60 and then coast down 10-15 mph with the clutch in or in neutral.
stopping and starting the logger might be a bit difficult depending where its fitted, but as long as the logger is recording, and you do it within the first couple of laps in qually it should be easy enough to spot in the graph and take readings from.
Also technically if you stop and start the logger during qually you could have lap times disallowed !!! as no data :-)
It would also be preferable if all coast downs were done at the same point on the circuit from a consistency and safety point of view.
I'll get JR to decide something before qually
G
G and Nick,
Mine is not as important as you know and i can do mine anywhere more important to concentrate on getting "B" cars set up.If you chaps have time great if not we could do it at another round to suit.It may be better as i will have several upgrades on the car after brands ready for silvestone.
cheers perry
Mine is not as important as you know and i can do mine anywhere more important to concentrate on getting "B" cars set up.If you chaps have time great if not we could do it at another round to suit.It may be better as i will have several upgrades on the car after brands ready for silvestone.
cheers perry
I agree that the main straight isn't *perfect*, but when I was there with Tim the other week, we found that there is just enough to get a decent reading. A minor incline will make bugger all difference to the high speed coast down as its designed to measure air resistance rather than anything else, and the air resistance force will be much, much more significant than gravity at this speed. For this reason, you also don't want to do the high speed coast down at lower speeds (50-60), as the differential between the high and low speed coast downs won't be high enough. Race Technology advised me that a 'sensible main straight speed' is what you want - so really 130/140 mph for Class B/A in this case.
I was going to make the case that an independent driver should really do the coast downs to ensure everything is uniform. I suggested to Mal that you, G should be allowed to take each car out for 2 laps to obtain coast downs evenly if the drivers were to allow it (may be a sticking point I know). This would make everything quite a bit easier though - you would only need to cruise round the corners, then just give it some stick on the straight to do the test.
I was going to make the case that an independent driver should really do the coast downs to ensure everything is uniform. I suggested to Mal that you, G should be allowed to take each car out for 2 laps to obtain coast downs evenly if the drivers were to allow it (may be a sticking point I know). This would make everything quite a bit easier though - you would only need to cruise round the corners, then just give it some stick on the straight to do the test.
no seriously that would be fine.Forums | General Motorsport | Top of Page | What's New | My Stuff