fuel Posted May 19, 2016 Share Posted May 19, 2016 Haha crackup! This is kind of the flaw with measuring Coefficient of Drag, frontal area is part of the equation. If he's kept the same CD but increased frontal area by a fair bit, then he HAS increased drag. For the Kayak to be "cost neutral" he'd need to have ended up with a lower CD to offset the extra area. Not sure why he's bothered calculating CD anyway because solidworks would have given him the total drag number (which is more meaningful) in order to run his calculation with.His numbers are way off anyway, with a sanity check there's no friggen way a late model BMW has a CD over 0.5 It's a nice model of the car though! Wish I knew how to draw stuff that well in Solidworks haha. Didn't quite read the whole article - but that model car is a Pontiac G8 aka Holden Commodore. 2 Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted May 19, 2016 Share Posted May 19, 2016 Im very keen on building something along the lines of this... http://ecomodder.com/wiki/index.php/MPGuino Man I would be fizzing at having a realtime readout telling me exactly what MPG I am getting whilst driving!!!! Dave- you keen on going halves on building some? We can get Ned to help and feed him with sandwiches in return. 2 Quote Link to comment Share on other sites More sharing options...
Roman Posted May 19, 2016 Author Share Posted May 19, 2016 I dont have need for one personally, but could be interesting as a project. One thing though, if its for the Viva have you considered something like this? http://ecomodder.com/forum/showthread.php/how-get-instant-fuel-consumption-megasquirt-5474.html You'd need the laptop plugged in to see results, but its free which aligns well with our spending philosophies haha. 1 Quote Link to comment Share on other sites More sharing options...
NickJ Posted May 20, 2016 Share Posted May 20, 2016 Im very keen on building something along the lines of this... http://ecomodder.com/wiki/index.php/MPGuino Man I would be fizzing at having a realtime readout telling me exactly what MPG I am getting whilst driving!!!! Dave- you keen on going halves on building some? We can get Ned to help and feed him with sandwiches in return. Hooking up 3 wires is hardly building! I'm keen to put one on the Caldina, there is even 3sfe calibration data there to get started Quote Link to comment Share on other sites More sharing options...
sidewaysickness Posted May 20, 2016 Share Posted May 20, 2016 Hooking up 3 wires is hardly building! I'm keen to put one on the Caldina, there is even 3sfe calibration data there to get started He's not interested in buying and fitting that. He seriously means build the same kind of unit and then fit it. Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted May 20, 2016 Share Posted May 20, 2016 Yeah I think you can get it as a kit? Ive not looked that far. Saying that, the complete built unit is only 46 Euros plus post which aint too bad. But its just more fun building these things. Dave- that free MS thing is certainly free..but only works in 5th gear unless one can be bothered to do it for each gear. Plus it means I have to have either my laptop open or use MSdroid on my phone which I've not used for ages because it kept dropping out. Just keen on a neat little permanent display somewhere on dash. Quote Link to comment Share on other sites More sharing options...
NickJ Posted May 20, 2016 Share Posted May 20, 2016 He's not interested in buying and fitting that. He seriously means build the same kind of unit and then fit it. I was being a smart arse for it being quite a simple circuit for what it achieves, with the code available to load onto the arduino the most difficult part looks to be tracing an injector wire back for the input. 2 Quote Link to comment Share on other sites More sharing options...
fuel Posted May 20, 2016 Share Posted May 20, 2016 finding injector pulse is easy - there are only two wires per injector and you just want the one that doesn't have +12V feed going to it. I think the hardest part would be setting up a speed sensor for vehicles that don't have a stock speed sensor. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted May 20, 2016 Share Posted May 20, 2016 I'm not sure if its been covered or not, but has anyone tried them fuel saving tyres? 1 Quote Link to comment Share on other sites More sharing options...
igor Posted May 20, 2016 Share Posted May 20, 2016 40lb in the front, 46lb in the rear in the HiFlys on my coon. Still hogs the gas. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted May 21, 2016 Share Posted May 21, 2016 Fuck you're a cheap cunt. Hiflys are cheap nasty Shit. I would know, I have one on my daily too 5 Quote Link to comment Share on other sites More sharing options...
JoKer Posted May 23, 2016 Share Posted May 23, 2016 I like the ones in the advert that are "fuel efficient" cos the roll further with less resistance BEST SAFETY ADVERT EVER edit links & vid https://www.energywise.govt.nz/energy-labels/energywise-approved-tyres/ Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted May 23, 2016 Share Posted May 23, 2016 That's why I was asking. A mate reckoned they use less gas. Quote Link to comment Share on other sites More sharing options...
fuel Posted May 23, 2016 Share Posted May 23, 2016 they are apparently quite hopeless for traction and tend to squeal around corners etc Quote Link to comment Share on other sites More sharing options...
JoKer Posted May 23, 2016 Share Posted May 23, 2016 nooooooooooooooooo 1 Quote Link to comment Share on other sites More sharing options...
bigfoot Posted May 23, 2016 Share Posted May 23, 2016 they are apparently quite hopeless for traction and tend to squeal around corners etc ^^^^^that. Found that out in gfs car when traction control started cutting in with sedate driving 2 Quote Link to comment Share on other sites More sharing options...
JoKer Posted May 23, 2016 Share Posted May 23, 2016 how can they seem like a good idea? like water proof tea bags (for campers/trampers) or ejector seats on Helicopters or a solar powered Torch..... Next the Govt will tell you Smoking is good for your health Quote Link to comment Share on other sites More sharing options...
tortron Posted May 24, 2016 Share Posted May 24, 2016 because you are all interested the drag coefficients of a 1962 morris minor (no match for a low light im sure) Drag coefficient (Cd, Cx, Cw) 0.5 Frontal area (A) 2.03 m2 / 21.8 sq ft / 21.8 sq ft (est.) Aerodynamic coefficient (Cd×A) 1.01 m2 / 10.9 sq ft / 10.9 sq ft (est.) Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph) 25.2 kW / 33.8 hp / 33.8 hp (est.) *that was all a nice table before, nevermind ol mate vizard says cd is actually 0.342, but its just based on cars of that era and their size or something 2 Quote Link to comment Share on other sites More sharing options...
tortron Posted May 24, 2016 Share Posted May 24, 2016 fun fact a morris minor doesn't have 25.2kW 2 Quote Link to comment Share on other sites More sharing options...
JoKer Posted May 24, 2016 Share Posted May 24, 2016 Subaru Legacy Equivalent Gen II a Wagon has lower Drag than a Sedan #waglyfe 0.34 Subaru Legacy Wagon sauce https://en.wikipedia.org/wiki/Automobile_drag_coefficient soz site didnt list Sedan Quote Link to comment Share on other sites More sharing options...
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