0-60 times with new toy!

[falcon fanatic]

So, after 20 years of guessing at the performance of my cars I finally broke down and bought the beltronics FX2
http://www.beltronics.com/fx.html
Got a good deal on it at etronics.com. What a great tool! It basically measures g-force in any direction, so it calculates accelration (60ft, 100 ft, 0-30, 40, 50, 60, 1/8mi. and 1/4mi), braking, cornering, peak and average hp, etc.
Just got it last night, so I had to throw it in the falcon and get some times. Out of four runs my best 0-60 was 10.75 seconds and my worst was 12.85. Then the brakes overheated and I had to go home. Stock was supposed to be something like 17 seconds? Not bad for a car with a two speed transmission. Now that the weather is warm, maybe I'll get off my butt and install that stupid c-4 that's been sitting in my garage for 9 months.

 

[Anonymous]

Thats cool! I had not seen that before. If I ever get my car back from the shop I plan to install one of these universal guages. Also does the 0-60 and 1/4 mile times. I picked up an extra original comet guage housing via ebay for 25$ to practice on. I think it will look pretty good. These are cheapest at Summit.
http://www.nordskogperformance.net/dp10002.html

 

[Anonymous]

Fanatic, does it say in the instructions how it determines HP? Curious how it would work on an older car with no computer to help determine that reading.


-Chris

 

[CobraSix]

MOre then likely, it uses G-forces (inertia) to determine power.

Slade

 

[falcon fanatic]

Well, I've only had it for a few hours and of course I didn't really read the manual, but basically I think you enter the weight, coefficient of friction (basically aerodynamic drag - it tells you how to estimate that), and estimated driveline loss (with a ford o matic!! must be like 30%) and it figures out how much horsepower you need to be turning in the times you get.

 

[Anonymous]

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1 Send the information to XECUTE.

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P.S. It will take a little longer for feedback but it will be for free.

 

[xctasy]

Har har har!

I haven't done a 0-60 mph curve..yet. But I can work it out easily.

Out of four runs my best 0-60 was 10.75 seconds and my worst was 12.85.

Your ride has a convertable body Futura 2-speed to propel.

The weight one up is you, plus gas, plus the tare of about 2400 poinds. So I'd guesstimate 2600 pounds as tested.

The hp to get 0-60 mph can be determined from car mags. Generally, a car with 26 pounds per flywheel hp will do 0-60's in 11 seconds, and 17.5 sec quarters all day. A 12.9 sec 0-60 is a 18.8 sec quarter is about 32 pounds per flywheel hp . That's with a manual which has a loss factor of 1.265. A two stage auto may be a 1.35 loss. So 2600/27 = 96 hp net, maybee up to about 103 hp net.

The answer is anywhere from 96 to 103 hp. First cool run is the one. Forget crappy runs, and do the calcs from the first three repeatable. Technically, five repeatable runs is best, but an old 2-stage is gonna soak some heat after a few blasts!

The calcs for hp from standing 60 ft, 1/8, 1/4 mile, 0-60 mph and maximum speeds are very easy if you are interested.

See this? http://fordsix.com/forum/viewtopic.php?t=6711

or this http://fordsix.com/forum/viewtopic.php?p=36696&highlight=#36696

or this one http://fordsix.com/forum/viewtopic.php?p=47518&highlight=#47518

The impulse on acceleration can be calculated. It's often 5 times the actual rim pull from wheel.

Caterpiller earthmovers did work on it from the 60's, and its nothing but straight physics. The device you have runs like the G-analyst, and all it does is:-

1. determines Hp by calculating the 0-60 and 1/4 mile times against

2. a horspower curve

3. for a given vehicle mass.

I've explained the calcs in full in the past, with each calculation noted. It's no black-art. But it does get a little confusing. Bearing in mind I've been stupid enough to do 2900 posts to explain lots of this stuff, I'd rather recomend better sources such as this sitehttp://wahiduddin.net/toc.htm who 54Ford found for me. The best part is this little gem

.

A while back,

I'm sure Panics website has something similar in a non graphical way. Bowling and Gripo's has a non graphical datbase, but if your just looking for HP, the first link above does it all with the very bare minimum of math

One day soon, I'll find a smart person who can simplify it so we all can use it without having a mental burnout!