Barra powered Escort

EBSXR6 · 15-09-2018, 01:43 PM

https://www.youtube.com/watch?v=EUvGgm-_YBU

.:4:. · 15-09-2018, 01:53 PM

Seen that yesterday. Its a wicked little pano.

**Fordman1** · 15-09-2018, 02:39 PM

Omg !

Craig@AUDI · 16-09-2018, 10:15 AM

Just pondering the power to weight ratio to make a 8.8 quarter!

**solarite_guy** · 16-09-2018, 10:33 AM

Quote:

Originally Posted by Craig@CumberlandFord

Just pondering the power to weight ratio to make a 8.8 quarter!

What do you reckon the cars weight to be?

RANGEREST · 16-09-2018, 11:57 AM

Wasn't that for sale on here a year or so ago?

jpd80 · 16-09-2018, 12:41 PM

Quote:

Originally Posted by solarite_guy

What do you reckon the cars weight to be?

I used to own an RS2000 in the early 1980s, it was around 950 Kgs.

EBSXR6 · 16-09-2018, 01:24 PM

According to Doctor Google Mk1 Escort Van was about 815 Kg.

**solarite_guy** · 16-09-2018, 05:04 PM

Alright let's take a mid weight between the 2 which puts us at ~1950lbs. Reason, a lot of stuff get pulled out of the street version of the car and to handle both power requirements and the scrutineers a lot of stuff gets put into the car.

I assumed a frontal area of 30 sq ft and a drag coefficient of 0.45. If anyone knows better, it is easy enough to recalculate.

A more direct indicator of hp in a drag race is mph, however, there are rules of thumb of ETs should ideally match up with certain mph ranges and vice versa.

In this case both numbers correlate well.

To convert to fwhp I am getting 705hp if taken from a 600rpm/sec dyno pull from a calibrated SuperFlow 901 or 902 water brake dyno.

A steady state reading would calibrate to around 740hp. Both of these numbers are from a highly efficient chassis and powertrain combinations.

This maps to ~2.766 lbs/hp or 2.635 depending on method.

There are some more simplistic algorithms out there, such as the Moroso "Miracle Wheel", etc that use 235 as a constant.

.:4:. · 16-09-2018, 06:02 PM

Obviously the thing weighs more then what it did stock. A barra with a snail and all the ascociated bits will do that, and stiffening for that, saftey, and traction business will add weight. So the thing probaby is a bit heavier then factory. You cant really even strip out the interior because they didnt really have much to start with. Even if it weighs say 1200kgs, its more a marvel of engineering that it can get it to the ground over brute power. And i reckon it makes a bit of power.

**solarite_guy** · 16-09-2018, 06:36 PM

Quote:

Originally Posted by .:4:.

Obviously the thing weighs more then what it did stock. A barra with a snail and all the ascociated bits will do that, and stiffening for that, saftey, and traction business will add weight. So the thing probaby is a bit heavier then factory. You cant really even strip out the interior because they didnt really have much to start with.

Believable but not necessarily, and that is exactly why I stated this:

Quote:

Alright let's take a mid weight between the 2 which puts us at ~1950lbs. Reason, a lot of stuff get pulled out of the street version of the car and to handle both power requirements and the scrutineers a lot of stuff gets put into the car.

If someone is familiar with that car, I would be glad to recalculate.

Quote:

Originally Posted by .:4:.

Even if it weighs say 1200kgs, its more a marvel of engineering that it can get it to the ground over brute power. And i reckon it makes a bit of power.

Right, the mass or weight of the vehicle is not a good determining factor for getting power to the ground. It is the overall miracle of engineering. Really, it is not a miracle, it is good engineering.

That said, a lot of folks get disappointed when they learn the power requirements to run a number. That is why I stated this:

Quote:

A steady state reading would calibrate to around 740hp. Both of these numbers are from a highly efficient chassis and powertrain combinations.

When the actual power number doesn't match the ideal performance number, that is when it is time to do a little data acquisition to find the inefficiencies in the chassis and power train.

Again, if someone can provide a more accurate weight, it is easy to recalculate. Also, if anyone has a better guess on the frontal area and coefficient of drag can help pinpoint better.

For example, if it runs a particular class with minimum weights, that could be helpful. For example, my Mustang must weigh no less than 3250 with driver.

LG17 · 16-09-2018, 07:41 PM

Quote:

Originally Posted by RANGEREST

Wasn't that for sale on here a year or so ago?

I believe it has been for sale through various outlets for a while.

**solarite_guy** · 16-09-2018, 07:45 PM

Quote:

Originally Posted by LG17

I believe it has been for sale through various outlets for a while.

AHHH HAAA, then can somebody call and get the weight? Keep in mind we need to know with driver too.