I'll bet it was interesting backing that thing up onto those tires! I wouldn't want to see that thing running at speed & slide off the tires either! Who knows - maybe he runs a water pump & thats his water pressure for the double-wide! "Hey Billy-Joe, I'm fixin' ta take a shower - go set the cruise control on the Camaro at 50 - last time you had it on 80 & damn near ripped the skin off'n me!"
From the looks of it he sold his autographed picture of Tom Wopat and John Snider and bought a used IROC (the dirt head car of choice). When picking out his limo tent, and new set of rims he forgot that he needed to get a new pump for his well. So junk out the old winch truck, attach the PTO to the pump head and TADAAAAA! Back your car on the tires, put it in gear, block the front tires with rock from your yard, slam it in gear and take your monthly shower. Damn you are smart!! Geno
Theres actually a guy out here that uses a Diesel Mercedes as his well pump drive. The whole car is sitting there and its adapted to the rear drive axle... I'm sure it was cheaper than a real pump drive setup. Redneck ingenuity I guess.
That one pic looks like he has a strain gauge attached between the chains holding the car and the pipe concreted into the ground. Looks like a Utah plate on the Camaro.
[ QUOTE ] What I'm trying to figure out is how he gets the car up on the other tires? [/ QUOTE ] Engage the brakes.
[ QUOTE ] so how does it read and record the results...whats the set up anybody know that? [/ QUOTE ] STRAIN GAUGE.
Hey Fraz, ever had tandem Bud wheels apart? I don't think you have. It looks like there are no lug nuts on there, BUT they are studs that hold the inner wheel on while giving thread to hold the outer tire on. This thing is crude but I like it so far. Any more information on this guys set up? It appears the air brakes are still functioning on the tractor axle and it seems as if the pinion may be hooked to a pump or something to give the resistance of the "dyno". Either that or he is using brake pressure from the tractor axle, that would explain the strain gauge attached to the chain. Pretty creative stuff here guys. NUTS to all you who poo-poo this stuff, Camaro or no Camaro.
somebody better call the thought police, and stop this guy. he is thinking on his own, and we just can't have that....... no one really needs a dyno anyway, just add up all the HP numbers from the add on stuff you bought. 20 HP for the exhaust, 15 for the air cleaner.....
Does the axle have to be hooked up to anything or would it be possible to use the axles brakes for resistance? Edit, Oh, you already said that... Nevermind... I wouldn't mind having a Dyno in my backyard, but I think it might piss my neighbours off...
Acutally changed quite a few an inner tandem bud and non bud tires/wheels when I was working at a local salvage yard/wrecker service, and none looked like that one. However it's late and I'm tired and the pic still looks like the wheel's just there with no nuts or anything holding it up. Time to go to bed, I'm getting grumpy and argumentative. G'night.
Fraz man, not trying to argue. Just didn't think you have seen this set up before. There is a stud sleeve that holds the inner wheel on like this.... then the outer wheel goes on and a lug nut holds it on. sort of like this....
now, that strain guauge attached to the tether WOULD NOT truly give rear-wheel horsepower, would it? Just the amount of pulling force, which is whatever is leftover above the force required to spin those truck wheels... which is probably an "uncalibrated unknown." So, How the F do you get any sort of useable data outta this thing? Only forseeable way is relative before and after runs at the time of adding bolt ons. ?
It would be possible to measure the Torque wouldn't it? And the Horsepower is calculated with the Torque and the RPM. It would probably be a ***** to calibrate though... What kind of grip would the rear tires have on those Truck tires, would that be better or worse than metal rollers?
torque is a function of twist, rotation, that would have to be read with some sort of a sensor on that truck axle... Hey! who the F here knows how real dydno's work, school us!!!!
the strain gauge measures force. and we can measure the velocity of the wheels. force times velocity equals power. just measure these two quanities and we can get a horse power measurement with a little bit of algerbra. OR we can use the strain gauge to measure the torque at the rear wheels. then we can measure the RPM at the rear wheels. RPM times Torque equals horsepower. there is no rocket science to this, you could get this all out of a high school physics book. and burndup, you need to read one of those.... you could make a dyno out of an old automatic transmission and a bathroom scale if you wanted to. most "real dynos" measure torque, then calculate horsepower by multiplying it by RPM. David
Torque is measured in INCH POUNDS, as in " It took 14 POUNDS of TORQUE to PRY my mornin wood down so I could piss.............my heels were 4 inches off the floor, so it takes 14 Pounds to gain 4 inches of Torque
Well, congrats on your apparatus still functioning, T, between you being an old fart and an avid cyclist, its living on borrowed time!
OK all you backyard engineers - how does he get it up there on those truck tires? That's a mighty big gap & drop between the tire & the concrete pad... Also, once running on speed, all four tires better be perfectly square with each other & perfectly flat at the contact patch because they will wander back & forth & then you'd have a nice mess. That would be my biggest concern... Strain gauge? I thougth it was a quick disconnect!
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