mr lover Posted January 23, 2006 Share Posted January 23, 2006 Been to local airfield to me and got a couple of times 5.41 for me and 5.55 for my 8 year old son!! with me in the passenger seat, was very foggy so only did a couple of runs. Running a standard TT auto thought times were ok if it is accurate. Quote Link to comment Share on other sites More sharing options...
GeordieSteve Posted January 23, 2006 Share Posted January 23, 2006 Before we get into the accuracy thing... ARE YOU MAD? lol Quote Link to comment Share on other sites More sharing options...
mr lover Posted January 23, 2006 Author Share Posted January 23, 2006 not as mad as it sounds massive runway and absolutly nothing to hit Quote Link to comment Share on other sites More sharing options...
Pig Posted January 23, 2006 Share Posted January 23, 2006 Good stuff mate. Love runways but my local one is army and im now nothing to do with the army so cant go on there anymore Looks pretty accurate to me, nice one! Quote Link to comment Share on other sites More sharing options...
LeeT Posted January 23, 2006 Share Posted January 23, 2006 out of interest, which one is it? the cheap £30 one? i wouldnt mind getting one of these just to have a play around Quote Link to comment Share on other sites More sharing options...
mr lover Posted January 23, 2006 Author Share Posted January 23, 2006 yes cheapy i paid about 35 quid of ebay Quote Link to comment Share on other sites More sharing options...
hadyn Posted January 23, 2006 Share Posted January 23, 2006 That sounds pretty much spot on for stock power. Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted January 23, 2006 Share Posted January 23, 2006 I remember a ford mag testing these type of devices a while back, they turned out to be amazingly accurate for the money! Quote Link to comment Share on other sites More sharing options...
GeordieSteve Posted January 23, 2006 Share Posted January 23, 2006 I used to sell them. Everyone seemed really happy with them (after EVERYONE doubted they would work) Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted January 23, 2006 Share Posted January 23, 2006 How does it know how fast you are going? And how does it know how much horsepower you've got FFS Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted January 23, 2006 Share Posted January 23, 2006 the scariest thing is... it can sense your rpm through the cigarette lighter! wtf! Quote Link to comment Share on other sites More sharing options...
Jake Posted January 23, 2006 Share Posted January 23, 2006 Anyone remember the guy on eBay was trying to sell his "800bhp" MkIII Supra? It turned out that he had calculated the power with one of these devices! IIRC, you can make them say anything you like if you put in the wrong stats for the car (weight, etc) Quote Link to comment Share on other sites More sharing options...
Homer Posted January 23, 2006 Share Posted January 23, 2006 Its an accelerometer, not a very sophisticated one, yet should be very accurate in a straight line. If mounted very securely the one thing an accelerometer can measure with great accuracy is acceleration over time (duh!) - and therefore o-XXXmph times. The bhp figures (such as that muppet selling the mk3), rpm, etc all rely on owner inputs such as mass, rolling resistance, aero efficiency, etc. Unless you know these very accurately these 'other' figures are meaningless. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted January 23, 2006 Share Posted January 23, 2006 OOOO magic gizmo I feel myself drawn towards it. £40 plus postage though Yeah but how does it know that you have reached 60 mph? Acceleration rate metres per second per second when added up I guess would sort of tell you when you hit 60 I guess. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 23, 2006 Share Posted January 23, 2006 Yeah but how does it know that you have reached 60 mph? Acceleration rate metres per second per second when added up I guess would sort of tell you when you hit 60 I guess. It measures G-force per 100th's of a second (at least in the one I have - AP22). Once you have these it can work out G over time and therefore can determine current speed (at any 100th of a second). As soon as it hits target speed it will record the time taken to reach that speed. Some unit are much more complex than others. The one I have does data logging per 100th of a second and includes lateral G, great fun for seeing performance on the track. With the right software it can show shift and brakes points over the track (on a map) without any data apart from the run around the track itself. Very nice bit of kit! Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted January 23, 2006 Share Posted January 23, 2006 I want 1 now you b*st*rds Quote Link to comment Share on other sites More sharing options...
ivan Posted January 23, 2006 Share Posted January 23, 2006 You can borrow mine Bri. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted January 23, 2006 Share Posted January 23, 2006 OOO can i? Quote Link to comment Share on other sites More sharing options...
ivan Posted January 23, 2006 Share Posted January 23, 2006 Sure you can. It's the older one though - no data logging. Does 0-60, 60-0, 1/4 mile time, G-force and Horses (as if you'd believe it). I'll PM my number if you want to pop round. Quote Link to comment Share on other sites More sharing options...
JohnA Posted January 24, 2006 Share Posted January 24, 2006 The bhp figures I get from my AP-22 are not far at all from those I got from a hyb dyno (without adding any 'conversion' and 'transmission' claptrap) As long as you have access to a long, quiet, straight length of road with good traction, you've got a free road-dyno. Then you go home and upload the runs, so you can compare on Excel or whatever. No more bullshite about seat-of-pants horses from dubious mods. As said, it's all in the accuracy of the figures you enter for the fixed parameters. Quote Link to comment Share on other sites More sharing options...
S7EVE Posted January 24, 2006 Share Posted January 24, 2006 My Gf bought me the top of the range one of these for xmas, must say Im quite pleased with it. Measures, 0-60, 1/8th Mile, 1/4 Mile, G's, Top Speed, Torque (I think), plots all results on a graph which can be linked to your PC, store upto 30 runs, cross reference results, etc etc. I am told the technology used for the device is from military rockets! I have only had a little play with it, due to the weather, but must admit, it seems to be pretty much spot on. You must calibrate the device using the correct weight etc. As to how it works, I'll have to get the book and let you know, but im pleased with it! Interchange with your mates, plot on fancy graphs, flashs when to change gear and looks slick on the dash. Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted January 24, 2006 Share Posted January 24, 2006 Anyone know any reputable places to buy one of these? Had a quick look round 'tinternet and can't find anything because I'm A: lazy and B:...... Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted January 24, 2006 Share Posted January 24, 2006 ebay brings up lots of these matey! Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted January 24, 2006 Share Posted January 24, 2006 Thanks I guess that I'm going to have a few people bidding against me now lol Quote Link to comment Share on other sites More sharing options...
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