rocketkart
Active member
im working on building a rc airboat let me know what you guys think http://www.diygokarts.com/vb/picture.php?albumid=596&pictureid=3414
anybody into rc stuff?
- Thread starter rocketkart
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That is awesome. Looks great. Specs?
I've been into RC cars/trucks for as long as I can remember. My first car was a Cox Ultra Stock. Since then I've probably had 50 of them. I'm actually trying to sell a couple now to fund my kart project.
I've been into RC cars/trucks for as long as I can remember. My first car was a Cox Ultra Stock. Since then I've probably had 50 of them. I'm actually trying to sell a couple now to fund my kart project.
rocketkart
Active member
thanks tig. the hull is 20'' wide 35'' long the engine i had got from a old stand up scooter its a 33cc i need to get a new carb for it the old carb has a hole in the diaphragm and its non adjustable and i don't like that but thay got them on ebay for $15 new. i still don't now if the prop that i want to use will work cus the hub mybe to thick and it doesn't say the Specs on that but it's all for fun even if it is a massive failure. 
OzFab
Well-known member
As interesting as this may be to some members, it's not about go karts so, I'm moving this to the "more builds" section...
robbie
New member
I've been into RC planes since the 1980s. I have a website www.balsaworkbench.com where I help people learn how to build planes from scratch.
robbie
New member
Last year I traded a ready-to-fly airplane/radio/engine for an old Yerf Dog kart. The kart needed work but it runs now. The other guy was really happy with the airplane, but unfortunately he crashed it the third time he flew it. My instinct told me to feel guilty, but he knew the risks. Every time a plane takes off may be the last. Better luck next time.
rocketkart
Active member
thats a really cool website robbie. i got a few of the old cox engine laying around somewhere and may have to make a plane when im done with my airboat. update on airboat just put a 16''x3 blade x10p on it will so how well it will do it looks awsome.
rocketkart
Active member
got any pics of any of your airplanes.
robbie
New member
I always wanted an RC boat. When I get around to building ponds on my farm I'll have to build one. RC float planes are a ton of fun, too. I need to get to work on those ponds.
robbie
New member
Here are some photos of planes I've built.
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pipsqueak2.jpg
robbie
New member
Most guys have switched over to electric power on the smaller planes. Cox engines are particularly out of favor because they were troublesome to run in the first place. I got pretty good at handling them, but I think I've had enough. I just don't like electric, though. So I usually stick to planes requiring at least a .10 engine now.
rocketkart
Active member
i just check to see what i have and i got a cox .49 is that a good engine/ it also has the carb on it.i like the boat plane what engines are on it that thing is awsome.
robbie
New member
Yeah, that's the Cox .049 Tee Dee, which is a high performance engine. You can build something really nice with that. How are your flying skills?
rocketkart
Active member
my flying skills are so so i guess lol i got a few Helicopters there electric but i fly them all the time and im somewhat good at it to. right now i fly a 42 Inch 2 Speed GT QS8005 3.5 Ch 42" RC Helicopter its awsome and fun till you crash it. lol
robbie
New member
Yeah, helicopters are a lot of fun until you have to buy new parts. I guess that's why I've never gotten into them.
If you want any airplane recommendations for your .049, let me know. There are some .049 planes that will be way overpowered by that engine, since it is a high performance design.
If you want any airplane recommendations for your .049, let me know. There are some .049 planes that will be way overpowered by that engine, since it is a high performance design.
rocketkart
Active member
yeah recommendations would be great i got 6 of the .049 engines including a box full of pieces and parts so whats you got in mind?
rocketkart
Active member
maybe you can help me with this i just got the prop that i want to use on my airboat and the instrustions say install propeller with the airfoil side forward. what is the airfoil?
robbie
New member
The cross section of the propeller is an airfoil, as in a wing. The blunt edge is the leading edge, and the sharp edge is the trailing edge. Lift is created on the top of the airfoil, which means your propeller pulls toward the rounded convex side. In other words, you want to install it so the convex side is toward the front.
There may be an issue with your installation. Most engines used in RC models turn counterclockwise as viewed when looking at the front of the airplane. A standard propeller will pull the engine forward in this configuration. Your photo appears to show an engine that turns in the standard direction, judging from the rope handle, which means you need a pusher propeller because the engine is facing the back of the boat. Is this what you got?
rocketkart
Active member
yeah i have a master airscrew pusher 3 blade prop my engine spins at counterclockwise the opposite way a clock turn right ?
robbie
New member
Yeah, that's right. It looks as if you have the right equipment. The rounded convex side of the propeller goes to the front of the vehicle.
Actually it will still move air in the correct direction if you mount it backwards, but less efficiently. That's a trick that will allow you to use your Tee Dee .049 on a plane designed for moderate power. Because these tiny engines are not throttled you have to use the correct engine to keep it from going into outer space before it runs out of fuel. If you want to build a mild-mannered airplane but don't want to buy another engine, that's one way to make it work.
Actually it will still move air in the correct direction if you mount it backwards, but less efficiently. That's a trick that will allow you to use your Tee Dee .049 on a plane designed for moderate power. Because these tiny engines are not throttled you have to use the correct engine to keep it from going into outer space before it runs out of fuel. If you want to build a mild-mannered airplane but don't want to buy another engine, that's one way to make it work.
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