And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Monday, September 18, 2023
The Mighty Eagle : Gentleman Joe Schubeck with a 900 cubic inch DOHC, 4 valves per cylinder, Eagle engine. Few were dropped into exotic sports cars, most went into boats.
More about HP / weight ratio in cars. Not to mention if you ran it anywhere but the dragstrip you'd need a 50 gallon gas tank just to make it to the next gas station.
Dual plugged, evens out the flame front, its not much an increase power per say, but it adds up with 8 cylinders, helps the power curve across its entire range. Its the effort to garner all the available power inherent in an engine philosophy. I ran dual plugged heads on a Ducati 2 valve V Twin, first cause the included angle of the valves required a relatively tall piston dome to get 12.5-1 comppression ratio, the thinking is the dome interfears with the flame front propagating evenly, dual plugs supposed to give you improved combustion, which showed up on the dyno, only a couple hp, but where it matters is it flattned out the dips in the torque curve. I could feel the effects on the track. Which is an interesting aspect, finding some aspects of increase in power do not show up on the dyno curve but they do in actual real effects. Hard to explain exactly. I imagine when you spend so much effort and money on this engine above, you do everything that boosts power, after all its all about power to begin with. I guess its a kind of mentality, cause i had it when competing, and a lot of times turned out its the small things that matter, like dial plugs which gives you advantage over others racing similar engine classes. Anything you can do to improve combustion efficiency thats what really adds up. Its actually in some ways more fun than the racing itself. That search for moah powa!
PS, if they ran these engines on alky or nitro-methane, you got to run dual plugs do to such a rich fuel to air ratio compared to a gas engine, its a beep-ton of fuel to ignote in such a short period of time, especially with hige lift cams and gross overlap cam timing.
Sometimes the comments here are ridiculous or funny, but many other times, comments like this one are simply fascinating. Thanks for taking the time to write them up, Anon, and the rest of you guys.
As to feeling it on track, the increased and smother torque curve verifies what I tell people about horsepower vs. torque. Horsepower numbers are to impress people, but torque is what gets the work done. torque is what moves the car and pushes you back in the seat ( and breaks things like driveshafts, transmissions, axles, differentials, etc.).
Hard to find specific information, but the far side distributor cap appears to have more than 8 HT wires. 3 plugs per cylinder? View the plug wires with this in mind.
I think there are two magnetos on the left side of the engine, and one on the right. They may be timed differently. Most modern dual plug engines fire one plug after tdc for a more complete burn of the fuel. It's an emissions thing, but it would improve hp and torque on an engine running the typical rich mix mixtures on nitro or methanol.
More about HP / weight ratio in cars. Not to mention if you ran it anywhere but the dragstrip you'd need a 50 gallon gas tank just to make it to the next gas station.
ReplyDeleteIf you put it in a car, how daggum BIG would it need to be? That thing is huge.
ReplyDeleteI count 12 spark plugs in one cylinder head and two magnetos with 8 high tension leads each?
ReplyDeleteAl_in_Ottawa
Dual plugged, evens out the flame front, its not much an increase power per say, but it adds up with 8 cylinders, helps the power curve across its entire range. Its the effort to garner all the available power inherent in an engine philosophy.
DeleteI ran dual plugged heads on a Ducati 2 valve V Twin, first cause the included angle of the valves required a relatively tall piston dome to get 12.5-1 comppression ratio, the thinking is the dome interfears with the flame front propagating evenly, dual plugs supposed to give you improved combustion, which showed up on the dyno, only a couple hp, but where it matters is it flattned out the dips in the torque curve. I could feel the effects on the track. Which is an interesting aspect, finding some aspects of increase in power do not show up on the dyno curve but they do in actual real effects. Hard to explain exactly.
I imagine when you spend so much effort and money on this engine above, you do everything that boosts power, after all its all about power to begin with. I guess its a kind of mentality, cause i had it when competing, and a lot of times turned out its the small things that matter, like dial plugs which gives you advantage over others racing similar engine classes. Anything you can do to improve combustion efficiency thats what really adds up. Its actually in some ways more fun than the racing itself. That search for moah powa!
PS, if they ran these engines on alky or nitro-methane, you got to run dual plugs do to such a rich fuel to air ratio compared to a gas engine, its a beep-ton of fuel to ignote in such a short period of time, especially with hige lift cams and gross overlap cam timing.
DeleteSometimes the comments here are ridiculous or funny, but many other times, comments like this one are simply fascinating. Thanks for taking the time to write them up, Anon, and the rest of you guys.
DeleteAs to feeling it on track, the increased and smother torque curve verifies what I tell people about horsepower vs. torque. Horsepower numbers are to impress people, but torque is what gets the work done.
Deletetorque is what moves the car and pushes you back in the seat ( and breaks things like driveshafts, transmissions, axles, differentials, etc.).
Can anyone find a car that was in????
ReplyDeleteThat would be awesome !!!
Hard to find specific information, but the far side distributor cap appears to have more than 8 HT wires. 3 plugs per cylinder? View the plug wires with this in mind.
ReplyDeleteAnd nitrous too??
ReplyDeleteTractor-pull engine.
Also, it appears to be triple-plugged.
ReplyDeleteWhere is the third magneto?
I think there are two magnetos on the left side of the engine, and one on the right. They may be timed differently. Most modern dual plug engines fire one plug after tdc for a more complete burn of the fuel. It's an emissions thing, but it would improve hp and torque on an engine running the typical rich mix mixtures on nitro or methanol.
DeleteWhat are those wired things going into the headers?
ReplyDeleteMost likely they are thermocouples for measuring Exhaust Gas Temperatures.
DeleteProbably temp probes.
Delete