Every forum has to have some game that people play to keep it fun…so here’s my silly take on it.
Rules:
1: The current question has to be answered before a new one can be asked.
2: The person who answers the latest question asks a new one.
3: Try to keep it in the world of cars, engines etc. (none of those, “how long do you leave chocolate chip cookies in the oven” questions)
4: If you do ask a question simular to the one in the rule #3 example, your punishment will be. 1/4 cup of used gear lube in your salon styled hair, 2 hours at a wire welder (or until your Tommy Hillfiger jeans are full of holes due to weld spatter) AND you’ll have to man handle a 6 foot crocodile while wearing a loin cloth. All to regain your masculinity in the eyes of your peers.
This isn’t really a car question, rather leaning more towards motorcycles. I did however find the answer quite facinating.
Question: Why does a standard 45 degree V-twin (Harley Davidson for example) vibrate your molars and a 90 degree V-twin (such as the Ducati) is vibration free?
Both engines are a single crank pin design and have perfect crank assembly balance.
ducati pistons cancel themselves in their up and down motion, harley pistons are unable to cancel themselves because they both go up and down insted of like the ducati where one goes up and the other goes out, did i say that right? I am new to this as you can see.
ducati pistons cancel themselves in their up and down motion, harley pistons are unable to cancel themselves because they both go up and down insted of like the ducati where one goes up and the other goes out, did i say that right? I am new to this as you can see.
Pretty close
Single cylinder engines are the worst for this.
Pretend the piston on a single cylinder is at top dead center. As the crank rotates it pulls the piston down and at 90 degrees the piston is moving at it’s maximum speed, by 180 degees the crankshaft has to fully stop the piston and change it’s direction. This stopping and starting is the cause of the primary vibration in a single cylinder. A parallel twin with the crank journals spread 180 degrees from each other has the same effect since both pistons are coming to a stop at the same time.
The 90 degee single crank pin twin cancels this effect out because as piston 1 is coming to a full stop, piston 2 is moving at is maximum speed.
The 45 degree single crank pin twin doesn’t do this. When piston 1 is stopping, piston 2 isn’t moving that fast, therefore you get the pa-dump, pa-dump, pa-dump effect that Harley’s are known for.
A few years back, Harley Davidson introduced a balancing shaft to their engines to cancel this effect while still retaining the classic sound. (hardcore fans screamed in outrage but the average college degree buyer loved it)
In the mid 60’s, BMW bought a small German auto maker. They had a few cars left over, so they re-badged them as BMW’s. They are almost 100% forgotten, and quite odd looking. I’m being vague to make this a bit more challenging (and to force you to learn a but about BMW in the process), but if it’s too hard I’ll add more info.
The question is, What company did BMW buy, and what was the name of the model that got the V8?
Bought them for plant capacity to build their new large 2500/2800 sedans. E3 in BMW speak.
I have one, a 1973 3.0s.
Most commonly known here as the BMW Bavaria.
Oh, the second question: Glas 2600 was the ‘big’ car they rebadged. Called the “Glaserati’ by some wags.
They pretty much rebadged the entire Glas line for a short time after they bought them, to use up available stock, I guess. They were also manufactured as CKD in South Africa for awhile. The former Glas cars, that is.
I said Dingolfing.
OK, my question: SU Carburetors. What do the initials SU stand for, and, what buisness did SU start out as? Hint: it was before the carburator was invented.
Skinners Union, named after George Herbert Skinner. Mr. Skinner patented his carbeuretor design in 1905. As far as what they made before that, i have no clue.
Skinners Union, named after George Herbert Skinner. Mr. Skinner patented his carbeuretor design in 1905. As far as what they made before that, i have no clue.
Both cars were Ford Falcon XBs, the yellow one being a 1974, and the black one being a 1973 GT351.
As to my previous question, Glas was right, but the big V8 I was referring to is the 3000GT. There’s a rusty one in Houston I want to buy, but I asked a local dealer if they carried parts for it anymore, and they said “we don’t carry nissan parts here.“ Lame.
NEW QUESTION:
In the 90’s, Saleen released a rather unexpected rendition of a Ford. It came in V6 and V8 models. To this day, they refuse to release molds of the body parts, and refuse to admit they made it. What model is it based on?
Saleen Explorer XB6 and XB8. The XB6 being very rare since they were an accident. Saleen won’t sell body part replacements, but they will repair them in the event of an accident..for some change of course.
NEW QUESTION: While watching Extreme Trains the other night, they were testing a BSNF train engine. The panel showed around 4,000 hp @ 1050 rpm. How much torque was it putting out at 1050 rpm??
72-78 falcon xb8, is all the info i have had including a fake supercharger sticking out of the hood, people are building replicas of this car, and the original backup movie car is in some movie car museum, as far as the trains torques i have no clue
4000 hp @ 1050 rpm = 20000 ft. lb. 10 tons of torque!
DING DING DING DING! There is no way of measuring a motor’s horsepower. Torque is what every dynometer measures and then a mathematical calculation is used to determine horsepower.
Horsepower = (Torque * RPM) / 5252
Torque = (Horsepower * 5252) / RPM
20,000 ft/lbs of torque seems like a lot compaired to the HP number, but the worlds largest internal combustion engine makes quite a bit more. The 14 cylinder, 2300 ton Wartsila-Sulzer RTA96-C 2-stroke diesel produces an astounding 108,920 hp @ 102 rpm and an insane 5,608,312 lb/ft @ 102rpm. 5.5 MILLION!!
