The ports on the bottom are auxiliary exhausts which relieves the heat load from the top of the cylinder by getting rid of the hot gasses at the bottom of the power stroke. They were used on many early aircraft engines including Bleriot's Ansani that he used for crossing the Channel in 1909. A well-designed aux exhaust will use long pistons skits to keep the ports closed at TDC otherwise crankcase oil will have a direct path the outside (the Ansani was not well designed in this respect). Franklin used them on all cars from 1905 to 1911 but collected them into a manifold and had a valve to block the aux exhaust on the suction stroke. The last use of aux exhaust that I know of was on an experimental Continental Radial with sleave valves. The aux exhaust was controlled by the lower edge of the sleeve.
@BouvardHosticka This is excellent information, thank you! It definitely makes sense. We have an Ansani engine in the museum, and I have seen the holes drilled in the cylinder barrel for the aux exhaust, but never really unstood it until you explained it here. I love these early engines because you see all these unique concepts that were practiced for a while that are so unfamiliar to us these days. Thank you again!
@@motocrosser411 I drive a 1910 Franklin 1500 miles a year with concentric valves (both mechanical) and aux exhausts. You learn the peculiarities of these sort of things when you have to clean the coke from the aux exhaust every year and time the valves afterwards. Since they are mechanical with overlap, the closing of the exhaust is when the exhaust is coming up while the inlet is going down. When they meet defines the setting of the tappets.
Those cylinder ports are for exhaust. The steel bands just below the fins are to adjust the openings. "Also found in the box were four steel bands which it was determined were some sort of control of exhaust gasses that were allowed to escape through ports drilled in the cylinders immediately below the lowest fin. Scavenging of the cylinders was not only through the exhaust valves but also through these ports." -The Vintage Airplane, Mar 1980 p.12
This is awesome, thank you so much for sharing! I just assumed they were not because of the overhead exhaust valve. Curious that they would choose to evacuate the cylinder from two spots simultaneously (no rule book back then). Now that I know this is I am going to have to take a closer look at the barrels. I saw the bands on them, but not the exhaust ports. I wonder if ours are adjusted shut. Thanks again!
My pleasure! Happy you enjoy these old engines as much as I do! If you haven't seen it, I have an older video with a 1917 Curtis Jenny running, it has an open valvetrain as well! ua-cam.com/video/P_nCbOkdBc4/v-deo.htmlsi=I02P6CwDWIsigzhc I'm hoping to post a lot of more of this content this year, you should subscribe if you are into it! Happy Holidays!
Thank you so much! We will definitely do some more videos in the shop of us working! Still figuring out the format, but we will refine everything as we move forward!
The use of atmospheric intake valves is a horsepower saver in a low output engine, not to mention the fact that it removed an entire cam surface to deal with! Amazing technology for the time with that intake system surrounding the exhaust valve. Probably provided quite a bit of cooling to the exhaust valve, as well as a bit of extra atomization/vaporization of the incoming fuel charge due to the heat increase in that passage. Thanks for the history lesson, as a model IC engine builder, I will have to see if I can’t model something like this on my next atmospheric intake design. Should be quite a challenge at a smaller scale! 😳
@a41capt that's a very interesting point. I never thought much about the gains from the elimination of frictional losses associated with the actuation of the intake via camshaft. I also considered the cooling of the exhaust valve but didn't consider the benefit of helping to vaporize the fuel in the intake charge. This may have been helpful if their fuel was less volatile back then.
@ thanks, that’d be wonderful! I’ve already linked your video to my model engine group and it appears there’s quite a bit of interest. Some of the members do their own casting, although that’s beyond me. I work strictly with bar stock, so I end up with lots and lots of swarf!
Thanks for sharing it with your group! It would really cool to see a model of one these built! I'm not a fabricator for the most part so I'm in awe of those that can! If you or your group want any information on the engine, my contact information can be found on our Motorcycle website here: eaglesmeremotorcyclemuseum.com/photo-gallery%2F-contact-us
There are days when it's a dream. Never gets old because you are normally working on something weird for the first time. You finish the project and understand it, but never use the knowledge again lol. Next project you have to figure everything out all over again!
I will make another video once I get new gaskets made to reassemble. As long as it isn't too difficult I will disassemble the valve mechanism so we can all get a better look! If you look at the video where I ran it, some very knowledgeable people left some good comments regarding its function.
Hahaha, experimenting with different formats, this time it was attached to my head, we are going to try some with a tripod as well. Thanks for the feedback!
Was this engine acquired from a collector in the state of Indiana or the Midwest? I recall seeing a very similar set up at the big gas engine show held in Portland, Indiana 50 years ago. The sign on the engine stand looks very familiar, and I am sure it was a 1914 Kemp aero engine I saw in ‘74 and ‘75. I can vividly remember seeing a guy pulling the propeller through many times trying to start the engine, in front of a big crowd in the grand stands of the fairground that served as the venue for the engine show. I never saw it start and run, but others I know who attended the show over the years back in the early to mid 70s said that they had seen it run. If it is the same engine, I’m glad to finally get chance to see it run! Can you get a good shot of the sign board in the stand? Thanks for giving the engine a good home and for sharing it with us!
@michaelmurphy6811 we did buy this from the machine shop that build these out of Indiana. The gentleman we bought it from said that his family used to take it the fair and run it! I'll sure this is the same engine! I'm happy you got to see it run too! Come visit is year and you can see it run in person! If you increase the quality to 4k in the settings here and pause it you might be able to make out the sign. Otherwise, leave your email here and I can send you a photo of it!
Hahaha, thanks for your feedback! I'm not much of an editor, still developing those skills. It was either some kind of stock music or silence during the time-lapse portions, I understand your preference now!
Amazing technology from 37 years prior to my birth.
Straight forward presentation and review.
Thank you!!!
This is honestly so inspiring. I wish I had more time to machine so I could have a go at making something like this
The ports on the bottom are auxiliary exhausts which relieves the heat load from the top of the cylinder by getting rid of the hot gasses at the bottom of the power stroke. They were used on many early aircraft engines including Bleriot's Ansani that he used for crossing the Channel in 1909. A well-designed aux exhaust will use long pistons skits to keep the ports closed at TDC otherwise crankcase oil will have a direct path the outside (the Ansani was not well designed in this respect). Franklin used them on all cars from 1905 to 1911 but collected them into a manifold and had a valve to block the aux exhaust on the suction stroke. The last use of aux exhaust that I know of was on an experimental Continental Radial with sleave valves. The aux exhaust was controlled by the lower edge of the sleeve.
@BouvardHosticka This is excellent information, thank you! It definitely makes sense. We have an Ansani engine in the museum, and I have seen the holes drilled in the cylinder barrel for the aux exhaust, but never really unstood it until you explained it here. I love these early engines because you see all these unique concepts that were practiced for a while that are so unfamiliar to us these days.
Thank you again!
@@motocrosser411 I drive a 1910 Franklin 1500 miles a year with concentric valves (both mechanical) and aux exhausts. You learn the peculiarities of these sort of things when you have to clean the coke from the aux exhaust every year and time the valves afterwards. Since they are mechanical with overlap, the closing of the exhaust is when the exhaust is coming up while the inlet is going down. When they meet defines the setting of the tappets.
Those cylinder ports are for exhaust. The steel bands just below the fins are to adjust the openings. "Also found in the box were four steel bands which
it was determined were some sort of control of exhaust gasses that were allowed to escape through ports drilled in the cylinders immediately below the lowest fin. Scavenging of the cylinders was not only through the exhaust valves but also through these ports." -The Vintage Airplane, Mar 1980 p.12
This is awesome, thank you so much for sharing! I just assumed they were not because of the overhead exhaust valve. Curious that they would choose to evacuate the cylinder from two spots simultaneously (no rule book back then). Now that I know this is I am going to have to take a closer look at the barrels. I saw the bands on them, but not the exhaust ports. I wonder if ours are adjusted shut. Thanks again!
Very cool I love all those old engines. Thanks for the video.😊😊😊
My pleasure! Happy you enjoy these old engines as much as I do! If you haven't seen it, I have an older video with a 1917 Curtis Jenny running, it has an open valvetrain as well! ua-cam.com/video/P_nCbOkdBc4/v-deo.htmlsi=I02P6CwDWIsigzhc
I'm hoping to post a lot of more of this content this year, you should subscribe if you are into it!
Happy Holidays!
Please more of this. I love your work. 😊
Thank you so much! We will definitely do some more videos in the shop of us working! Still figuring out the format, but we will refine everything as we move forward!
The use of atmospheric intake valves is a horsepower saver in a low output engine, not to mention the fact that it removed an entire cam surface to deal with! Amazing technology for the time with that intake system surrounding the exhaust valve. Probably provided quite a bit of cooling to the exhaust valve, as well as a bit of extra atomization/vaporization of the incoming fuel charge due to the heat increase in that passage.
Thanks for the history lesson, as a model IC engine builder, I will have to see if I can’t model something like this on my next atmospheric intake design. Should be quite a challenge at a smaller scale! 😳
@a41capt that's a very interesting point. I never thought much about the gains from the elimination of frictional losses associated with the actuation of the intake via camshaft. I also considered the cooling of the exhaust valve but didn't consider the benefit of helping to vaporize the fuel in the intake charge. This may have been helpful if their fuel was less volatile back then.
If you would like to model anything inspired off of this engine and need any measurements etc let me know!
@ thanks, that’d be wonderful! I’ve already linked your video to my model engine group and it appears there’s quite a bit of interest. Some of the members do their own casting, although that’s beyond me. I work strictly with bar stock, so I end up with lots and lots of swarf!
Thanks for sharing it with your group! It would really cool to see a model of one these built! I'm not a fabricator for the most part so I'm in awe of those that can!
If you or your group want any information on the engine, my contact information can be found on our Motorcycle website here: eaglesmeremotorcyclemuseum.com/photo-gallery%2F-contact-us
as a military aircraft mechanic i dream of working on this kind of stuff!
There are days when it's a dream. Never gets old because you are normally working on something weird for the first time. You finish the project and understand it, but never use the knowledge again lol. Next project you have to figure everything out all over again!
Now I know where the inletvalve is. Thank You.
My pleasure! Definitely a unique set up, a curiosity for the gearhead!
Such a Simple design but amazing nonetheless.
I tried Google on this, with little results. Please provide video of the cage with valves out, showing passages?
It would be interesting to see!
I will make another video once I get new gaskets made to reassemble. As long as it isn't too difficult I will disassemble the valve mechanism so we can all get a better look!
If you look at the video where I ran it, some very knowledgeable people left some good comments regarding its function.
May want to use a little caution as the head gaskets may be asbestos sheet
You know you may right, good advise. Maybe why my lungs are so achy today 😅
Doubt they’re original
Interesting but please stop moving the camera!
Hahaha, experimenting with different formats, this time it was attached to my head, we are going to try some with a tripod as well. Thanks for the feedback!
Was this engine acquired from a collector in the state of Indiana or the Midwest? I recall seeing a very similar set up at the big gas engine show held in Portland, Indiana 50 years ago. The sign on the engine stand looks very familiar, and I am sure it was a 1914 Kemp aero engine I saw in ‘74 and ‘75. I can vividly remember seeing a guy pulling the propeller through many times trying to start the engine, in front of a big crowd in the grand stands of the fairground that served as the venue for the engine show. I never saw it start and run, but others I know who attended the show over the years back in the early to mid 70s said that they had seen it run. If it is the same engine, I’m glad to finally get chance to see it run! Can you get a good shot of the sign board in the stand? Thanks for giving the engine a good home and for sharing it with us!
@michaelmurphy6811 we did buy this from the machine shop that build these out of Indiana. The gentleman we bought it from said that his family used to take it the fair and run it! I'll sure this is the same engine! I'm happy you got to see it run too! Come visit is year and you can see it run in person!
If you increase the quality to 4k in the settings here and pause it you might be able to make out the sign. Otherwise, leave your email here and I can send you a photo of it!
Interesting Video question you can not make a simple head gasket
yes i think we have a problem here some one that dos not know what they are doing
Like a text part from "Penny Lane" (The Beatles): Very strange!
35hp at 1150rpm
Great vid
Thank you! First one of this format. We are going to try to do some more like this moving forward!
It only lasted 110 years? What a piece of crap!
Hahaha, right?
Did anyone even check engine out before starting doesn't sound like it
The music junked another video 👎👎👎👎💩💩😬
Hahaha, thanks for your feedback! I'm not much of an editor, still developing those skills. It was either some kind of stock music or silence during the time-lapse portions, I understand your preference now!