Thanks for showing the tribulation of getting a glow engine model working. Been there, done that, have all the pictures myself. I have an OSMW Kaos in the cue but it's a few down. I note you went old school, using a period appropriate K&B 61. I found a similar period NOS Webra Blackhead 10cc, the rarer all silver version, at a swap meet last year.
Whatever you do, protect that paint! 😂 Just kidding, great videos showing us the build process, I’m glad the maiden went well! Thanks for sharing all your cool tips on this build!
Very awesome! Kaos was notorious for engine problems since the centerline of the fuel tank is so far below the needle valve. Make sure the tank is propped right up against the hatch with some foam. Bridi used a 12 oz tank which was pretty thin. Lots of guys ended up using the Perry pump in the Kaos. Good luck with this wonderful airplane!
Yeah, the way OSMW has teh tank is propped up on a platform that does place the tank pretty high. It's about right and I do think I need to just dial in the engine a tad more. Been running it rich and with the colder weather now, it likely needs the added heat to keep going. I recall this from my childhood when I was running glow.
That is definitely my favorite paint job on a sport RC aircraft, ever! Maryland has an embarrassingly cool looking flag! embarrassing for me living across the line in Pennsylvania LOL
Yeah, the transition definately got snappier with the 1/8 turn I gave it before that last flight. I think with the cooler weather, compared to when I was initially running this engine in, needs a bit more heat so leaning out a touch more will likely make it happier. Dialing the engine is part of the experience with a model like this. I appreciate the comment!
@JoshuaOrchard is a beautiful build. I recently built a Bridi trainer 60 that fulfills the same purpose for me, an airplane that i can take every time and fly the piss out of it. It's basically a high wing Kaos. I love glow power despite the mess it makes.
I considered a pilot but the narrow canopy limited to essentially just a pilot head and that ended up looking a bit funny so I just opted to keep things more simple and focus on the paint.
Thanks for the comment! Having built and flown both balsa and composite models, they each have their own pros and cons. The composite ones definately have the capability to fly more scale, being lighter more ofthen than not. The bals models lend themselves to being easier to get the finish nicer. The more rigid framework prevents surfaces from wrinkling (even glassed foam can do this) and allows for some really stunning rivet work. I have gone through periods of both on my channel and right now... Blasa is definately king. :)
The current version at Tower differs in construction. It has a 2-piece wing design and the nose is not very original-to-design with the cowl. While a wing tube and plug-in wings is just fine, it simplifies the manufacturing. Wing joints are a hard thing to get right in manufacturing, which is why you generally don't see 1-piece wings in ARFs. Smaller foamies are in a different category. I SUSPECT that they would fly very similar. The One from Tower does nto have full-length ailerons so roll rate may suffer a little. There are other minor differences here and there but the big one fore me anymore is the crappy plastic coverings we now have. They just don't make this covering like they used to. It peels up, REALLY softens in the sun, and in general is just not as resilient as it once was. To be fair, not all coverings are created equal. I'm more specifically complaining about the offerings from Horizon. UltraCote is just garbage.
Hi Joshua, The Kaos looks great. Nice maiden flights. I would agree the idle mixture might be a tad rich. Did you notice the Sun dogs while you were traversing close to the Sun?
Nice job! What is the black thing in the middle of the firewall? Is that some sort of seal for the fuel lines or am I just seeing things? Also with glow, I would always wrap at least the RX with foam. Looks like you needed to open up the low end needle valve
The black thing is a rubber seal. I use it to pass the fuel lines through and keep the majority of the "slime" out of the fuel bay. The receiver is wrapped with soft velcro, which I've been told is sufficient for receivers these days. Older receivers has more of an issue with the frequency plugs becoming jostled loose or out. SInce that is not longer a problem, basic virbation isolation is really all you need, like servos.
With that motor dying so easily theres no way I would foy it that way. You are only asking for a deadstick landing to occur. I would try replacing the glow plug figuring out the idle where it will idle without dying and all positions so you can do hammerheads and things like that without the engine dying on you right now it's ridiculously easy for the engine to just quit which tells me something is not right....
Yes, I think it's pretty obvious that it's not PERFECT and I acknowledge that in the video. Part of the process is LEARNING things and from the start of this project I've stated that too. I do electric power more often than not and so my skills in glo are very limited and that why I have this model. While deadsticks are an accepted risk in this instance, they are not a particular safety hazard. Therefore, I disagree with you to ground the airplane. I accepted the risk of a deadstick after assessing that I would remain in control of the model regardless whether I had thrust or not. I certainly appreciate you comment and suggestions. I will have a look at the glow plug and replace it as you suggest. The next outing has a goal to try and dial in the idle better. This is easier said than done in the fluctuating cold temperatures but again, a learning experience.
Thanks for showing the tribulation of getting a glow engine model working. Been there, done that, have all the pictures myself. I have an OSMW Kaos in the cue but it's a few down. I note you went old school, using a period appropriate K&B 61. I found a similar period NOS Webra Blackhead 10cc, the rarer all silver version, at a swap meet last year.
Nice build and paint job. She seemed to fly well even when you were dead sticking it.
Whatever you do, protect that paint! 😂 Just kidding, great videos showing us the build process, I’m glad the maiden went well! Thanks for sharing all your cool tips on this build!
Looks and sounds good! 👍
So that's the OSMW Kaos. I like his stuff. I built a GHOST last winter. Been flying it all summer with a K&B 40, love it
Yeah, you'll love this, then.
Very awesome! Kaos was notorious for engine problems since the centerline of the fuel tank is so far below the needle valve. Make sure the tank is propped right up against the hatch with some foam. Bridi used a 12 oz tank which was pretty thin. Lots of guys ended up using the Perry pump in the Kaos. Good luck with this wonderful airplane!
Yeah, the way OSMW has teh tank is propped up on a platform that does place the tank pretty high. It's about right and I do think I need to just dial in the engine a tad more. Been running it rich and with the colder weather now, it likely needs the added heat to keep going. I recall this from my childhood when I was running glow.
Congratz on the maiden!!!
That is definitely my favorite paint job on a sport RC aircraft, ever! Maryland has an embarrassingly cool looking flag! embarrassing for me living across the line in Pennsylvania LOL
LOL!!! Born and raised here. I've lived elsewhere but definately a MD man at heart.
That engine looks like a K&B .61. Those carbs are a little fussy to tune but when she's dialed in there're pretty good.
Exactly right!
Definitely rich on the bottom end. Could use another click or 2 lean to really clean up the transition.
Yeah, the transition definately got snappier with the 1/8 turn I gave it before that last flight. I think with the cooler weather, compared to when I was initially running this engine in, needs a bit more heat so leaning out a touch more will likely make it happier. Dialing the engine is part of the experience with a model like this. I appreciate the comment!
@JoshuaOrchard is a beautiful build. I recently built a Bridi trainer 60 that fulfills the same purpose for me, an airplane that i can take every time and fly the piss out of it. It's basically a high wing Kaos. I love glow power despite the mess it makes.
Looks great! You need to 3d print a pilot that looks like you. With the glasses and hat, of course.
I considered a pilot but the narrow canopy limited to essentially just a pilot head and that ended up looking a bit funny so I just opted to keep things more simple and focus on the paint.
Congratulations on the build!! Balsa planes just fly better!!! Happy modeling!
Thanks for the comment! Having built and flown both balsa and composite models, they each have their own pros and cons. The composite ones definately have the capability to fly more scale, being lighter more ofthen than not. The bals models lend themselves to being easier to get the finish nicer. The more rigid framework prevents surfaces from wrinkling (even glassed foam can do this) and allows for some really stunning rivet work. I have gone through periods of both on my channel and right now... Blasa is definately king. :)
I wonder how the ARF compares
Im going electric with mine , yours is beautiful.
The current version at Tower differs in construction. It has a 2-piece wing design and the nose is not very original-to-design with the cowl. While a wing tube and plug-in wings is just fine, it simplifies the manufacturing. Wing joints are a hard thing to get right in manufacturing, which is why you generally don't see 1-piece wings in ARFs. Smaller foamies are in a different category. I SUSPECT that they would fly very similar. The One from Tower does nto have full-length ailerons so roll rate may suffer a little. There are other minor differences here and there but the big one fore me anymore is the crappy plastic coverings we now have. They just don't make this covering like they used to. It peels up, REALLY softens in the sun, and in general is just not as resilient as it once was. To be fair, not all coverings are created equal. I'm more specifically complaining about the offerings from Horizon. UltraCote is just garbage.
Congrats!
Hi Joshua,
The Kaos looks great. Nice maiden flights. I would agree the idle mixture might be a tad rich. Did you notice the Sun dogs while you were traversing close to the Sun?
I did notice them. It's in interesting optical phenomenon, isn't it? I touch more leaning out of the idle and I think She'll be a real ripper.
Nice job! What is the black thing in the middle of the firewall? Is that some sort of seal for the fuel lines or am I just seeing things? Also with glow, I would always wrap at least the RX with foam. Looks like you needed to open up the low end needle valve
The black thing is a rubber seal. I use it to pass the fuel lines through and keep the majority of the "slime" out of the fuel bay. The receiver is wrapped with soft velcro, which I've been told is sufficient for receivers these days. Older receivers has more of an issue with the frequency plugs becoming jostled loose or out. SInce that is not longer a problem, basic virbation isolation is really all you need, like servos.
HS-425bb are not 7.2-8.4v servos they will burn up eventually on 2s lipo, nice looking plane!
THANK YOU for that word of caution. I've got a couple of 4-cell NiMh packs laying around. I'll swap one in.
As a follow-up, I used a 5-cell NiMh pack and adjusted my low voltage alarm on my radio. Again, thanks for the comment!
Very nice Kaos and good flying. I miss the sound of glow engines lol.
With that motor dying so easily theres no way I would foy it that way. You are only asking for a deadstick landing to occur.
I would try replacing the glow plug figuring out the idle where it will idle without dying and all positions so you can do hammerheads and things like that without the engine dying on you right now it's ridiculously easy for the engine to just quit which tells me something is not right....
Yes, I think it's pretty obvious that it's not PERFECT and I acknowledge that in the video. Part of the process is LEARNING things and from the start of this project I've stated that too. I do electric power more often than not and so my skills in glo are very limited and that why I have this model. While deadsticks are an accepted risk in this instance, they are not a particular safety hazard. Therefore, I disagree with you to ground the airplane. I accepted the risk of a deadstick after assessing that I would remain in control of the model regardless whether I had thrust or not.
I certainly appreciate you comment and suggestions. I will have a look at the glow plug and replace it as you suggest. The next outing has a goal to try and dial in the idle better. This is easier said than done in the fluctuating cold temperatures but again, a learning experience.
Those servos are definitely not rated for 2s lipo, they will get fried.
Another comment was made, A 5-cell NiMh pack has been swapped and my low voltage alarm has been adjusted. Thanks for the warning!