RexDiablo

That blue nissan looks like... something never seen before... But its really fast and gives a smile on every ones face! =)

RexDiablo

Hi!
Long time since ive done an update. Nothing exciting has happend except that we now got a way of reading power. Load cells on the ropes holding the car back multiplied with the speed of the wheels = watts. Great. N x m/s ..

davidws6

iTrader: (36)

I thought of this idea back in 07 but found a used water brake dyno. Though it's pump is too weak to hold back a ls1. So I used a higher gear and at least did a primary tune. Then finished it off on the road.

Great job !

ZexGX

iTrader: (28)

Congratulations guys! You just made front page of Jalopnik! http://jalopnik.com/5807502/how-to-b...2000/gallery/1

NemeSS

iTrader: (127)

dam. looks accident prone like a ****.

JeremyKrauss

That's badass

hobbesnmina2001

iTrader: (1)

I read the thread and it appears this low buck project has been a success, cool!
Dynos can be so useful in cutting down tuning time but they are expensive to buy, and costly to rent. So far I have found I can populate a lot of cells VE/MAF tuning by using different gears and HP Tuners logging has worked reasonably well so far. The problem is when your location does not have open road and has traffic.
I wonder if this also would work with 2 smaller lighter vehicle axles so the drive tires would be sitting on top between the axles. The package would be a little longer front to back but could sit much lower and not need such a high platform/hill. Tires may not be as heavy duty as big truck tires but the load should be roughly cut in half.

Carlos

joecar

Rex, will you be packaging these up and selling them at Walmart...?



DiYNO

madmax4499

iTrader: (3)

Dont worry too much about heat in the big breaks. Picture this, log truck 105500 lbs. haul *** down a steep mtn pass, drive 15 miles at 65 mph on flat road to our shop. pull in remove wheels. put on very thick leather welding gloves and still not be able to lift the drum off and onto the ground without getting burned. im almost sure they were glowing red coming off the pass. this driver would come in once a month for breaks. every third set of shoes he would need new drums and S-cam bushings.

garygnu

great idea and thread.I can see it now ,people stealing rear axles at truck stops.

mike06tork

iTrader: (5)

what if you fill the wheels with water..? have you though about that

hobbesnmina2001

iTrader: (1)

Making the wheels heavier by adding water or cement would make the load higher on acceleration however it does not add braking power compared to this heavy duty truck rear end does so I think thats a consideration.

I-C5

iTrader: (1)

I Need to build one of these here in Houston...Its hard to tune on the road with all this traffic