Everything Radial Engines
#2377
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RE: Everything Radial Engines
I have a FR5-300 that I am in the process of installing in a ¼ scale Fairchild 22. I have the Keleo exhaust ring installed and running (very nice by the way). My question to the Forum is this: Currently what is the glow driver of choice, I see there is one from Europe and one from Sonictronics/McDaniel. I would welcome any comments; pro and con.
L.
#2378
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RE: Everything Radial Engines
Cybertom
I couldn't agree more. It's the engine in the plane that matters, maybe just the fact that it's moving, rather than static, especially indoors. Your Robart does sound nice, and of course is beautifully made. It's been in the air for quite a few years now, have you looked inside for corrosion from fuel residue? What procedure do you follow at the end of a flying day?
BTW, nice job on the Stearman, a lot of work and your build video really tells the story. Worth watching... http://www.youtube.com/watch?v=AeN-s...eature=related
Regards, radial1951
I couldn't agree more. It's the engine in the plane that matters, maybe just the fact that it's moving, rather than static, especially indoors. Your Robart does sound nice, and of course is beautifully made. It's been in the air for quite a few years now, have you looked inside for corrosion from fuel residue? What procedure do you follow at the end of a flying day?
BTW, nice job on the Stearman, a lot of work and your build video really tells the story. Worth watching... http://www.youtube.com/watch?v=AeN-s...eature=related
Regards, radial1951
ORIGINAL: Cybertom
Radial1951,
My Robart R780 has excellent sound when it's at idle or wide open. It's transision is verty smooth creating a wide usable range of throttle. Nothing lost here.
What I am getting at is the SL 150 seems to exhibit a lot of the same charateristics as my R780. I want to see a really good video clip of the SL 150 in action on a flying aircraft. If the aircraft does a slow flyby a reduced throttle and the engine sounds like radial music at a variety of speeds I will be sold. A test bench is one thing...flying is another.
Radial1951,
My Robart R780 has excellent sound when it's at idle or wide open. It's transision is verty smooth creating a wide usable range of throttle. Nothing lost here.
What I am getting at is the SL 150 seems to exhibit a lot of the same charateristics as my R780. I want to see a really good video clip of the SL 150 in action on a flying aircraft. If the aircraft does a slow flyby a reduced throttle and the engine sounds like radial music at a variety of speeds I will be sold. A test bench is one thing...flying is another.
#2379
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RE: Everything Radial Engines
Cherokee Flyer: I purchased the Microsens glow driver for my FS-400 radial because virtually everyone with an FS-400 that I saw on either RCU or Youtube that was using a glow driver, was using the Microsens unit.
I am very impressed with it. It works extremely well, and has made my FS-400 much easier to start.
I have not yet used my engine in a flying application, but those who have are all over Youtube.
I am very impressed with it. It works extremely well, and has made my FS-400 much easier to start.
I have not yet used my engine in a flying application, but those who have are all over Youtube.
#2382
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RE: Everything Radial Engines
I purchased mine direct from Microsens. Their order page is available in English and they accept Paypal. IIRC it was about $60 or so delivered.
http://www.microsens.at/home1.htm
Click on "SHOP" on the left side.
http://www.microsens.at/home1.htm
Click on "SHOP" on the left side.
#2383
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RE: Everything Radial Engines
ORIGINAL: Cybertom
Radial1951,
My Robart R780 has excellent sound when it's at idle or wide open. It's transision is verty smooth creating a wide usable range of throttle. Nothing lost here.
What I am getting at is the SL 150 seems to exhibit a lot of the same charateristics as my R780. I want to see a really good video clip of the SL 150 in action on a flying aircraft. If the aircraft does a slow flyby a reduced throttle and the engine sounds like radial music at a variety of speeds I will be sold. A test bench is one thing...flying is another.
Radial1951,
My Robart R780 has excellent sound when it's at idle or wide open. It's transision is verty smooth creating a wide usable range of throttle. Nothing lost here.
What I am getting at is the SL 150 seems to exhibit a lot of the same charateristics as my R780. I want to see a really good video clip of the SL 150 in action on a flying aircraft. If the aircraft does a slow flyby a reduced throttle and the engine sounds like radial music at a variety of speeds I will be sold. A test bench is one thing...flying is another.
We are designing the new SL will be 200 or 250.
We thought of building a 200cc with the power of a 300cc with 9 heads with the same aesthetic SL150 engine.
How many of you think it is better to make a 9-cylinder with perfect reproduction, since most of the engines were nine heads?
Or do you think is better a 7-cylinder?
expect from all of you an opinion ...........
Thanks
Luigi
S.L.engines
#2384
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RE: Everything Radial Engines
S.L. Engines,
I don't think anyone would complain about a 7 or a 9-cylinder engine...Please just don't make a 5! I think what's important is that the engine must fit the power range of the projected aircraft being built.
Many people who built the Balsa USA Stearman years ago used the Moki 250 engine. I think this was because Moki didn't make a 150 engine at the time so builders bought what they could get their hands on. You have a 150 so I think you're ahead of the game.
I would look at the projected size of popular aircraft customers are building. For example 30% and 40% biplanes...the Air World FW190 and other large scale aircraft. If you make engines that fit the requirements of popular aircraft you can't miss!
I don't think anyone would complain about a 7 or a 9-cylinder engine...Please just don't make a 5! I think what's important is that the engine must fit the power range of the projected aircraft being built.
Many people who built the Balsa USA Stearman years ago used the Moki 250 engine. I think this was because Moki didn't make a 150 engine at the time so builders bought what they could get their hands on. You have a 150 so I think you're ahead of the game.
I would look at the projected size of popular aircraft customers are building. For example 30% and 40% biplanes...the Air World FW190 and other large scale aircraft. If you make engines that fit the requirements of popular aircraft you can't miss!
#2387
RE: Everything Radial Engines
I think the perfect size would be a engine that would suite the 1/5th to 1/4 scale people (which would be a great deal of people). a twin row radial with the diameter of about 8 inches or 200 mm's. that could be in the 50cc area, per row. so a total of about 80 to 100 cc's . would fit in a lot of war birds. and the torque it would make, you could easily swing a huge scale 3 or 4 blade prop.. the Solo prop guys would love the extra buisness..lol I know one would be on my want list if it could be sold at a fair price in comparison to the new Sedel engines
aww heck I would want a twin row radial even if it was in the 70 to 80 cc range. actually this size could be a hotter ticket.. imagine a Sedel 35 times two?? 70cc's- Sweeeet! !
aww heck I would want a twin row radial even if it was in the 70 to 80 cc range. actually this size could be a hotter ticket.. imagine a Sedel 35 times two?? 70cc's- Sweeeet! !
#2388
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RE: Everything Radial Engines
I've always wanted the Seidel ST-14-26, and later the ST-14500, but It wrenches my stomach to see the 6,500 Euro price tag that's associated with it. A twin row 70cc would be nice, but a twin row with the traditional 10cc cast heads would be even better.
Of course, I say this as a collector, vs. someone trying to fit it into an airframe.
Of course, I say this as a collector, vs. someone trying to fit it into an airframe.
#2389
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RE: Everything Radial Engines
On another note, how do you all feel about the $3500 price tag on the new OS 7 cyl?
Personally, I'm going to wait it out because of how the last OS release went (The IL300 Diastar). This one hit the market at $2500. I bought mine from another collector shortly after it was released and thought that I was getting a good deal at $2200. Apparently they weren't selling at Tower, because after a while, they lowered the price to $2300, then later to $1900. Eventually it went back up to what it is now.... $2300. Lastly, one just sold on eBay NIB for $1505, so this sort of tells us where the market is really at. It was supposed to be a limited production engine, but here we are a couple years later, and they are still in stock.
Does anybody else see the same thing happening with the FR7-420??? $3500 seems very steep when we consider that the FR5-300 was selling for just $1500 a year and a half ago. It was $2500 a few months ago, but now it is selling for a strangely calculated $1662.06. With the prices at tower changing so drastically and rapidly, It's hard to lend any credence to their business model for this type of purchase.
Personally, I'm going to wait it out because of how the last OS release went (The IL300 Diastar). This one hit the market at $2500. I bought mine from another collector shortly after it was released and thought that I was getting a good deal at $2200. Apparently they weren't selling at Tower, because after a while, they lowered the price to $2300, then later to $1900. Eventually it went back up to what it is now.... $2300. Lastly, one just sold on eBay NIB for $1505, so this sort of tells us where the market is really at. It was supposed to be a limited production engine, but here we are a couple years later, and they are still in stock.
Does anybody else see the same thing happening with the FR7-420??? $3500 seems very steep when we consider that the FR5-300 was selling for just $1500 a year and a half ago. It was $2500 a few months ago, but now it is selling for a strangely calculated $1662.06. With the prices at tower changing so drastically and rapidly, It's hard to lend any credence to their business model for this type of purchase.
#2395
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RE: Everything Radial Engines
ORIGINAL: Cybertom
S.L. Engines,
I don't think anyone would complain about a 7 or a 9-cylinder engine...Please just don't make a 5! I think what's important is that the engine must fit the power range of the projected aircraft being built.
Many people who built the Balsa USA Stearman years ago used the Moki 250 engine. I think this was because Moki didn't make a 150 engine at the time so builders bought what they could get their hands on. You have a 150 so I think you're ahead of the game.
I would look at the projected size of popular aircraft customers are building. For example 30% and 40% biplanes...the Air World FW190 and other large scale aircraft. If you make engines that fit the requirements of popular aircraft you can't miss!
S.L. Engines,
I don't think anyone would complain about a 7 or a 9-cylinder engine...Please just don't make a 5! I think what's important is that the engine must fit the power range of the projected aircraft being built.
Many people who built the Balsa USA Stearman years ago used the Moki 250 engine. I think this was because Moki didn't make a 150 engine at the time so builders bought what they could get their hands on. You have a 150 so I think you're ahead of the game.
I would look at the projected size of popular aircraft customers are building. For example 30% and 40% biplanes...the Air World FW190 and other large scale aircraft. If you make engines that fit the requirements of popular aircraft you can't miss!
Thanks for fast response Cybertom,
I agree with you, some customers are already mounting on the SL150 FW190 Airword so soon you will have wonderful video. I myself am about to mount a FW190 for a client with full tank of petrol and oil. Our SL 150 it will fly very realistically. Indeed, it has superior traction you maximum 21kg 23kg then perterà in vertical flight without any problems with the sound very nice.
Among the three months I've finished and tested for this customer and when you send personal videos.
Hello and thanks to all who are responding to me!
Thanks again ....
#2396
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RE: Everything Radial Engines
ORIGINAL: SJN
SL engines, please make a V-12, that fits the composite arf mustang and spitfire, and that size planes.
SL engines, please make a V-12, that fits the composite arf mustang and spitfire, and that size planes.
It would be very nice to do an engine so it would be my passion.
I love the Spitfire MK14 12 versions and I have made my dream and make an engine like that, but I think that it would not market because the cost would be too high.
Hello
#2397
RE: Everything Radial Engines
ahhh.....it cant be more complicated than a radial engine :-)
Someone has to be the first to market a V-12 engine.......think of all the customers
Someone has to be the first to market a V-12 engine.......think of all the customers
#2398
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RE: Everything Radial Engines
ORIGINAL: SJN
ahhh.....it cant be more complicated than a radial engine :-)
Someone has to be the first to market a V-12 engine.......think of all the customers
ahhh.....it cant be more complicated than a radial engine :-)
Someone has to be the first to market a V-12 engine.......think of all the customers
Since reality is more complicated ....
2 cam shafts on the head, liquid cooling, circulating water pumps and oil. Small compressor in 'aspiration.
No cost too much ... but for now I think maybe in 10 years ... maybe for an engine so now would not be enough for 8000 euros ... which does not contain any.
#2399
RE: Everything Radial Engines
you wouldnt need to have a 4 cam engine.. you could modify the design to be a single over head 2 valve engine. but the cost as you said would still be threw the roof..
BUT,, what about a similar V8....? lol
check out this video. if you look at this engine . use the bellhousing side of the engine ( reversing the engine) to attach a under drive for a prop make a engine like that but just a tad bit smaller.. this engine is 6 inches wide. but to tall with the supercharger.. the non supercharged engine makes 12 hp this one is in the 15+ area.
http://www.youtube.com/watch?v=qqp99...layer_embedded
http://www.youtube.com/watch?v=aWIWx...eature=channel
http://www.youtube.com/watch?v=4FpWb...eature=channel
You could stuff that in a 1/4 scale mustang or P-40 or a Spit
BUT,, what about a similar V8....? lol
check out this video. if you look at this engine . use the bellhousing side of the engine ( reversing the engine) to attach a under drive for a prop make a engine like that but just a tad bit smaller.. this engine is 6 inches wide. but to tall with the supercharger.. the non supercharged engine makes 12 hp this one is in the 15+ area.
http://www.youtube.com/watch?v=qqp99...layer_embedded
http://www.youtube.com/watch?v=aWIWx...eature=channel
http://www.youtube.com/watch?v=4FpWb...eature=channel
You could stuff that in a 1/4 scale mustang or P-40 or a Spit
#2400
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RE: Everything Radial Engines
S.L. Engines,
I think you have already differentiated your engines from your competitors because your engine has 7-cylinders and is very scale. I don't think anyone is selling a 9-cylinder GAS radial so that would be very unique and you are correct that many aircraft had 9-cylinder engines.
Don't forget about making exhaust rings for your engines. Most modelers find the task of creating a good quality exhaust ring to daunting a task to undertake themselves. They often feel that any ring they create won't match the quality of the engine they purchased. They are also afraid of damaging the engine in the process of making the ring. We expect the engine manufacturer to supply it for us. If you do this you will sell many more engines.
I think you have already differentiated your engines from your competitors because your engine has 7-cylinders and is very scale. I don't think anyone is selling a 9-cylinder GAS radial so that would be very unique and you are correct that many aircraft had 9-cylinder engines.
Don't forget about making exhaust rings for your engines. Most modelers find the task of creating a good quality exhaust ring to daunting a task to undertake themselves. They often feel that any ring they create won't match the quality of the engine they purchased. They are also afraid of damaging the engine in the process of making the ring. We expect the engine manufacturer to supply it for us. If you do this you will sell many more engines.