This picture is in the public domain and is used by implied permission.
This was among the last of the great radial engines ever designed and mass produced. At this size and power the technology had reached into the Law of Diminishing Returns as to the technical possibilities for this type of engine according to the Wright/Curtis Aeroplane Engine Manufacturing Company.
Here are the specs.
Type Radial engine
National origin United States
Manufacturer Wright Aeronautical
First run May 1937
Major applications A-1 Skyraider
Developed from Wright R-1820
HP Rated at: 4250 static horsepower each.
From your friends,
LittleDragon and Send it Boi
Very nice pic, Thank you very much.
If a 6 foot tall man were to stand beside this engine, the top of his head would only come about 3/4 of the way up to the top of this engine. That main drive shaft would be about as thick as the thigh of Ryo's leg.
Your friends always,
LittleDragon and Send it Boi,
Seen the pictures of these on the plane, but not just by it self.
was powerplant for B29 bomber. and like say in little tiny write up about it, this was about as far as the technology for air cool, radial engine for airplane could go. with this engine they found that much beyond this and you run smack up again the law of diminishing return, which ryo know you are familiar with neh.
your friend alway,
This was the Wright.. I invite you to check out Pratt and Whitney wasp, and in particular the quad wasp.. Know imagine the engine above and add FOUR rows to it.. For real brother, you have to see one to belive it, the rows are stagered back for air flow, and the engine is as deep as it is high.. also got to one for one hp to cu in.. so was putting out over 4300 hp in final evolution... The P-2v was my old bird, then the p-3. I love the old recips.. there as special as old flat head 45's to me..
The power to weight ratio was as you said the law of diminished return, and obviously no advancements have been made past the 4360 due to jets.
Great post on K2, was not sure if you saw this... Hi to Koji, and brother.
and went and did research on the wasp and it honto interesting engine, but like say in the post of this, the Wright did indeed reach up into the Law of Diminishing Return, because the Wasp only produced about 50 more horsepower than the Wright Cyclone. We may never know, because you are also correct about what you said about jet engines.
PS arigato for your kind words about our post about K2. we have nother picture of the mountains that show the so-called, "normal routes" up the mountain. there are actual 6 main routes, demo we believe there is another way that will be the easiest and safest ascent to the summit in the winter from the South Face so that the party will be protect from the north wind. we will post this picture in little while. hope you enjoy it. also we make post to answer ecaman question about the bullets for the Bul M5 on the thread we posted about the Bul 5.
Ryo, I know how exact you are, and please know this is not a "correction" but an update that i think you might appreciate. I see now why you were not that impressed with the pratt and whitney wasp, The HP figures, (obviously, you are not responsible for the pub you got them from) are wrong on the R3350, and of course with that showing only 50 hp i agree with you. Fact is that the R3350-32W put out 3500 hp not the 4250 figure. The final evolution of the wasp R4360(i did some checking here to be sure, as i didn't want to misslead you on my original post, produced in excess of 4500 hp and well over 1 hp per ci. a diffrence of about 1000 hp in the two engines. These figures are per "Jane's all the worlds aircraft", and one that i would highly recomend "American militay aircraft" by Jim Winchester (who i have never heard of, but backs Janes very well on all subjects ive checked in the past)I've never seen the 4360 but from the pics its sure impressive. Have a lot of hours in the P-2V, and that engine was a physical "rush" when started. the noise and vibration was beyond anything else ive ever experianced (cant emagine what the wasp must have been like) The starting drill was the recips first to get the generator on line, then the Jets J-34's that put out a bit less than the big recips (but weighed 1/3as much)You couldn't even tell they were running from inside.. V1 (which im sure you know is decision speed) was like being inside a blender on vaporise) I will never forget it..
ryo will not learn properly unless people like greg chan take the time and trouble and have the patience to work with little ryo. am honto very much grateful for this further information. hai hai, is mistake ryo could not avoid. even so, should have checked at Jane's to confirm as a second source on the facts. ryo would normal have checked a second source, demo not know why ryo fail to do so except when was doing this little bit research for friend zx12rmike chan, ryo was preoccupied with nother thing. this is not good researcher's job ryo do so would honto ask you forgive little ryo mistakes and accept humble apology for not checking facts more careful. gomen nasai. ryo bow.
greg we will all be going to metric here soon. I remember when they tried to get the US to go metric all willie nillie, And it met with too much resistance. So they are doing it anyways, they just aren't telling us. My Chevy 2500HD is half metric for God's sake!
Let me appologize, i probabley should have sent that in a pm, but really dont do those much, please dont think i was being critical with you, both of us are only going off of published info, and i was afraid of a misslead on the original. Ryo, ive never even seen the the big W&P wasp, was just impressed when i read about it, and get all excited with the old recips.. Was an ADJ in the Navy, which is NAVSPK for jet mech. But really loved the recips..I make more errors in spelling alone than all the rest of us put together, and when i remember how goofy i was when i was your age, believe me have nothing but the utmost respect for you..
ryo was only trying to be polite. and honto it is important for ryo to be good researcher and even more important to learn from making mistakes neh. you did not need to send such in pm. ryo is not afraid of constructive criticism. in fact ryo hungry for it neh. there is one thing about putting somebody down, which you never do, and nother thing about taking the time to teach young boy how to be better researcher and better scientist neh. ryo honto grateful to you for your friendship too neh. and also for what you wrote, so not to worry about that neh. you not have to hide such in a pm. ryo understand that you are retire person and that you enjoyed the time you were in the Navy. and by the way sir let little ryo offer sincere thanks for your service to our country. you not need worry about giving your best thoughts to ryo. ryo demand such neh! if this mean ryo have to go back and rework research and get facts and other things more correct, then this is good thing not bad thing neh. it how we also get to know each other better and learn from each other too neh. ryo is honto proud to be able to share this coming year and the first 3 month of 2011 with you and other friends here. there may be times when ryo need to pm with you, for example if have technical question that concern our rifle design program, would honto hope ryo would be free to write you in private and ask question neh and for you to honor proprietary intellectual property and so write back with answer in pm neh. was in fact remind earlier this evening by nother dear friend here that ryo should do less pming and share more with the public posts. ryo think he jealous neh, demo he get more pm than just about anyone except for maybe victor chan neh. was kidding about the jealous part. demo, he very right with what he point out to ryo and so ryo is grateful to this dear friend. demo, he honto understand about design team and the need to keep certain information private and the need to sometime consult with outside consultant. but he right about something like this. hope other people can learn from greg chan wisdom and experience and knowledge as well as ryo is enjoying to do so.
I have a huge chest i inherited from my Dad, and added to it while i was working as a mech. Talking mostly snap ons, and from 1/4 inch drive up to 3/4 and quite a bit of 1" drive ratchet and sockets. Worked on the big electric mine trucks back in the 70's after the service. Now they just sit there.. Guess its not an issue, i can't work on the new stuff anyway. If anybody is interested let me know.
I hear you loud and clear. The refrigeration industry is going the same way. I have to buy metric stuff all the time now. I have Craftsman stuff I got from a nice old gentlemen and it all works fine. Soon it won't be worth scratch! Electric mine trucks, cool, you would know about large electric motors, and how much torque they have. I had to work up on a roof of an old building that used o be an old Robinsons. I was just infatuated with the elevator running gear, speed control and all. I started collecting old tools before the economy (and my paycheck) went in the crapper! Another story another day
Hey this is for real, if you collect old tools we need to talk, Pop worked for Lieturniue (sptheshitoutathat) later Lieuturnoe (to tired to look up)Westinghouse.. Anyway they make, and i made the 120 to 200 ton trucks out of Peoria Ill. Pop started with them in 36 and retired in 78. He got me a job with them after the service, and I worked thier till my move to AZ. The tools i have are "REAL OLD" some of them are for real antique, and the girls and son-n-laws could care less. I'm talking about close to 100 lbs of good stuff, so give me a pm on what you collect, not trying to make money here, more interested in giving them a good home.. They were the old mans life brother..
greg I will be in touch next week, thank you good night
an engine this big ka lol! that would be one honto cold and honto big cold fridge neh.
One horsepower per ton (one ton of air conditioning=12,000 btu)
Due to the higher compression ratio for a walk-in cooler, the same compressor would have the capacity of aprox 8,000 btu . So if we assume 8,000 btu per hp and the motor HP is? Lets say a Big One very funny LD!
Always nice to talk to you!! Sincerely your friend, zx12rmike
didn't know if you had see this or not ka
PS you have new pm mail.
thanks for the kind words, you should have a response to your questions in pm if not let me know and i will resend.
am very sorry, demo did not get the pm you sent. the pm mail have been working again, it just being little bit wonky and am sure marvin san and quinton san will fix this soon. they are both very diligent and nice men. they do pretty good job of taking care of the site for us and ryo is honto appreciative of their efforts. ryo understand how big job it is of running big site like this and understand there will be problems from time to time. shigata ga naio neh. this mean it can't be helped neh. anyway, did send you a pm about those questions ryo ask yesterday, demo is not same thing as response to pm have not gotten yet. hope to see you soon and dozo, write back soon.