Modkat (Kingcat like design and build)
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RE: Kingcat-Like Design and Build
Like many others I'm sure, I am very interested in this design. I have been yearning for a pusher prop kit version of the Bobcat for quite a while. I was personally hoping for something around .40-.60 size, and I don't really care to mess with retracts, but this design you are doing is probably the closest thing yet.
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RE: Kingcat-Like Design and Build
ORIGINAL: jinzo
I have been yearning for a pusher prop kit version of the Bobcat for quite a while. I was personally hoping for something around .40-.60 size, and I don't really care to mess with retracts, but this design you are doing is probably the closest thing yet.
I have been yearning for a pusher prop kit version of the Bobcat for quite a while. I was personally hoping for something around .40-.60 size, and I don't really care to mess with retracts, but this design you are doing is probably the closest thing yet.
Thanks,
Mods
To convert the "insert name here"
I've been busy designing this bird but have no idea what do I call it, so I'll let RCU do it.
What should I name this plane?
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RE: Kingcat-Like Design and Build
ORIGINAL: Mods-R-Me
One more thing....
I've been busy designing this bird but have no idea what do I call it, so I'll let RCU do it.
What should I name this plane?
One more thing....
I've been busy designing this bird but have no idea what do I call it, so I'll let RCU do it.
What should I name this plane?
Ummmmm...
Mod-Cat
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RE: Kingcat-Like Design and Build
Personally, I'm not that much of a speed freak. I just really love the design and looks of the Bobcat. I would definitely want to do a smaller engine on it, as long as it will still fly nicely. Thing is, I can't get a "standard" engine such as an OS or SuperTigre in a reverse rotating shaft that I know of, which brings up the whole issue of pusher prop selection again.
Concerning a name for the plane, here are a few suggestions off the top of my head. I incorporated your name into a couple since it is your project.
MRM-Jet 90
Mod-Jet
ModStreak
Whiplash
Backlash
Rogue Wave
Anyways, looks like you are doing an awesome job and I look forward to seeing how it turns out.
Concerning a name for the plane, here are a few suggestions off the top of my head. I incorporated your name into a couple since it is your project.
MRM-Jet 90
Mod-Jet
ModStreak
Whiplash
Backlash
Rogue Wave
Anyways, looks like you are doing an awesome job and I look forward to seeing how it turns out.
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RE: Kingcat-Like Design and Build
I forgot to mention, per my agreement with BVM I can't use the word "cat" in the name, but I like the suggestions so far. Keep'em coming!
True that you can't get the OS or Super Tiger .60/.70 in a reverse rotating engine but Tower carries 3 blade pusher props for these engine sizes OR you can buy a Jett .60/.75 and throughly enjoy the airframe . All the engines are hand made. Also, on average, the Jett series turns 3,000-4,000 RPM above its same size OS or Supertiger counterpart. If you are a die-hard OS or SuperTiger fan just using the Jett muffler on these engines can increase the RPM by 1,000+.
This should be about the time Bob27 chimes in to tell you about the benefits of the Jett .
Mods
Thing is, I can't get a "standard" engine such as an OS or SuperTiger in a reverse rotating shaft that I know of, which brings up the whole issue of pusher prop selection again
True that you can't get the OS or Super Tiger .60/.70 in a reverse rotating engine but Tower carries 3 blade pusher props for these engine sizes OR you can buy a Jett .60/.75 and throughly enjoy the airframe . All the engines are hand made. Also, on average, the Jett series turns 3,000-4,000 RPM above its same size OS or Supertiger counterpart. If you are a die-hard OS or SuperTiger fan just using the Jett muffler on these engines can increase the RPM by 1,000+.
This should be about the time Bob27 chimes in to tell you about the benefits of the Jett .
Mods
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RE: Kingcat-Like Design and Build
I've looked at Jett engines before, but haven't actually used one. I'm sure they are very nice and very powerful, but like I said, I'm not a speed freak. I just really like how the plane looks. I don't really think that twice the price of an engine for 4,000 extra RPMs is worth it for me if I'm not wanting to fly the plane as fast as it can go. If it will fly semi-fast (which I consider to be around 80-100 MPH) and handle well on a standard engine, that's more than enough to satisfy me. But then again, if I do end up doing this project (assuming it turns out well and you are satisfied with it), I may just save up and get a reverse rotating Jett just to make the propeller selection and mounting easier, since you are designing if for that type of engine.
Another question while I'm thinking about it. I've only flown basic sport planes so far. How do models such as this one fly? I'm sure they are faster than sport models, but I'm talking about if they are really sensitive to inputs. My main concern is actually how they behave for landing, as in their general handling and if they slow down much.
Another question while I'm thinking about it. I've only flown basic sport planes so far. How do models such as this one fly? I'm sure they are faster than sport models, but I'm talking about if they are really sensitive to inputs. My main concern is actually how they behave for landing, as in their general handling and if they slow down much.
#34
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RE: Kingcat-Like Design and Build
ORIGINAL: jinzo
I know there are those that would consider such a thing a waste of the plane.
I know there are those that would consider such a thing a waste of the plane.
My main concern is actually how they behave for landing, as in their general handling and if they slow down much.
Thanks for showing so much interest,
Mods
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RE: Kingcat-Like Design and Build
ORIGINAL: AirGar
"Feline Flyer"
Do you want to keep the "name" in the same category as the "Bobcat"?
"Feline Flyer"
Do you want to keep the "name" in the same category as the "Bobcat"?
MRM
Thanks Jinzo.
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RE: Kingcat-Like Design and Build
Looks great mods, will keep following this design thru. As for a name only thing this early that came to mind was silly-easy but
MPP-V1 (Mod's Pusher Plane version 1) had to throw it out there
MPP-V1 (Mod's Pusher Plane version 1) had to throw it out there
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RE: Kingcat-Like Design and Build
ORIGINAL: Mods-R-Me
I forgot to mention, per my agreement with BVM I can't use the word "cat" in the name, but I like the suggestions so far. Keep'em coming!
Mods
I forgot to mention, per my agreement with BVM I can't use the word "cat" in the name, but I like the suggestions so far. Keep'em coming!
Mods
Mod-Kat
#40
RE: Kingcat-Like Design and Build
As long as you don't sell the a/c, i think you can name it the way you like ... no ?
I second that.
I like Bobs suggestion so why not make it
Mod-Kat
Mod-Kat
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RE: Kingcat-Like Design and Build
ORIGINAL: Strykaas
As long as you don't sell the a/c, i think you can name it the way you like ... no ?
I second that.
As long as you don't sell the a/c, i think you can name it the way you like ... no ?
I second that.
Back in 1972 Bob Violett got together with a friend of his to design an aircraft to compete in the world championships that year and the aircraft they entered was the Bobcat. The name has value to him because Bob- Bob Violett and the other gentlemen's initials, who's full name escapes me, where C.A.T. His friend passed away two years ago......, so now you understand why he doesn't want the word CAT on a similar design. Even though others have infringed on his wishes I will respect them and avoid the word CAT in the name.
I liked "Mod-Kat" too [:@], but I will keep the "Mod" portion in the name. Some names that were suggested to me offline were 1. Modulator 2. Modiflyer 3. Modiplane. I didn't have this much trouble naming my daughter [&:]. Just to check, I'll call BVM tomorrow and ask if I can spell CAT with a "K". Couldn't hurt.
Thanks Everyone,
Mods
#42
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RE: Kingcat-Like Design and Build
The Fuse - Phase 1
Today I experienced a CAD learning curve for about and hour. Just couldn't wrap my mind around the fuse design. All of my dimensions were way of.....until I realized that the entire part was in metric and not ISP [sm=cry_smile.gif]. Once that got sorted out everything flowed very smoothly.
Phase 1 will be to get the basic fuse shape from 2D sketches (figures 1 & 2). These sketches were then aligned with each other so the top and bottom sketches could be traced (figures 3-5). Then a sketch plane was created were each fuse former will be located and an ellipse traced the "connect the dots" 3D outline (figures 6 & 7). The former sketches were lofted together and produce the fuse outline (figure 8). The canopy and nose cone were also created with the same technique (figure 9). Lastly the 2D sketches are imposed onto the part to check alignment; almost dead on! (figures 10 & 11). This the basic shape of the fuse and it will be reshaped from this point on.
What's Next?
Phase 2
1. Joining the fuse with the wing and making the appropriate mounting cuts
2. Modifying the shape to accommodate the Jett 90 and cowl design.
3. Finalize fiberglass type and thickness
Phase 3
1. Work out internal structure and hardware placement (servos, batteries, airtank, etc.)
2. Balance completed design in Solidworks
Today I experienced a CAD learning curve for about and hour. Just couldn't wrap my mind around the fuse design. All of my dimensions were way of.....until I realized that the entire part was in metric and not ISP [sm=cry_smile.gif]. Once that got sorted out everything flowed very smoothly.
Phase 1 will be to get the basic fuse shape from 2D sketches (figures 1 & 2). These sketches were then aligned with each other so the top and bottom sketches could be traced (figures 3-5). Then a sketch plane was created were each fuse former will be located and an ellipse traced the "connect the dots" 3D outline (figures 6 & 7). The former sketches were lofted together and produce the fuse outline (figure 8). The canopy and nose cone were also created with the same technique (figure 9). Lastly the 2D sketches are imposed onto the part to check alignment; almost dead on! (figures 10 & 11). This the basic shape of the fuse and it will be reshaped from this point on.
What's Next?
Phase 2
1. Joining the fuse with the wing and making the appropriate mounting cuts
2. Modifying the shape to accommodate the Jett 90 and cowl design.
3. Finalize fiberglass type and thickness
Phase 3
1. Work out internal structure and hardware placement (servos, batteries, airtank, etc.)
2. Balance completed design in Solidworks
#43
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RE: Kingcat-Like Design and Build
Great work. Looks like you're mowing right through.
I have a question, though I suspect you probably can't answer it at this point. How much do you think this kit will end up costing? Wood is cheap, yes, but fiberglass molds jump prices real quick. I'm beginning to think that this plane may end up being out of my price range, but we'll see.
I have a question, though I suspect you probably can't answer it at this point. How much do you think this kit will end up costing? Wood is cheap, yes, but fiberglass molds jump prices real quick. I'm beginning to think that this plane may end up being out of my price range, but we'll see.
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RE: Kingcat-Like Design and Build
ORIGINAL: jinzo
Wood is cheap, yes, but fiberglass molds jump prices real quick.
Wood is cheap, yes, but fiberglass molds jump prices real quick.
Depending on how much work it is to produce a few parts myself with the mold I will make a decision. I'm guessing that I can produce 5-10 per month and I can write off most of the equipment needed to make the parts on my taxes . The plan is to keep the kit in the $100-$200 price range to meet my consumers (you guys).
Mods
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RE: Kingcat-Like Design and Build
The price range sounds just fine. I was personally worried that it might end up being twice that price.
Speaking of fiberglass molds, I should look into how they are made. I've personally never done a mold, but I have done vacuum bagging, so I would imagine a similar amount of work is done and the skill levels are likely along the same line.
Keep up the awesome work! [sm=thumbs_up.gif]
Speaking of fiberglass molds, I should look into how they are made. I've personally never done a mold, but I have done vacuum bagging, so I would imagine a similar amount of work is done and the skill levels are likely along the same line.
Keep up the awesome work! [sm=thumbs_up.gif]
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RE: Kingcat-Like Design and Build
ORIGINAL: jinzo
The price range sounds just fine. I was personally worried that it might end up being twice that price.
Speaking of fiberglass molds, I should look into how they are made. I've personally never done a mold, but I have done vacuum bagging, so I would imagine a similar amount of work is done and the skill levels are likely along the same line.
Keep up the awesome work! [sm=thumbs_up.gif]
The price range sounds just fine. I was personally worried that it might end up being twice that price.
Speaking of fiberglass molds, I should look into how they are made. I've personally never done a mold, but I have done vacuum bagging, so I would imagine a similar amount of work is done and the skill levels are likely along the same line.
Keep up the awesome work! [sm=thumbs_up.gif]
Enjoy: [link=http://www.rcuniverse.com/forum/m_2927309/mpage_1/key_/tm.htm]A-7 Build[/link]
Also is a site that has plans and instructions to build a $30 hot wire machine: [link=http://www.instructables.com/id/EK8Q92824BEP286S6S/?ALLSTEPS]Cheap Hot Wire Machine[/link]
Sometimes trolling pays off ,
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RE: Kingcat-Like Design and Build
ORIGINAL: cobratraxxas69
With the CAD skills you have, have you thought about working for Boeing or Lockheed or Northrop?
With the CAD skills you have, have you thought about working for Boeing or Lockheed or Northrop?
P.S. love the avatar LOL!
Pushy-Cat
You guys are too much.
Mods
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RE: Kingcat-Like Design and Build
ORIGINAL: SJN
Pushy-Cat
Pushy-Cat
[link=http://www.rcgroups.com/forums/showthread.php?t=164832]http://www.rcgroups.com/forums/showthread.php?t=164832[/link]