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Cox Engine of The Month
Does anyone have any experience with a Cox Mantis?
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Re: Does anyone have any experience with a Cox Mantis?
Here is the fuel tank vent as it comes out the bottom of the fuse. It is bent to point forward and slightly to the aircraft's right, to point into the prop's slip stream.
Last edited by fit90 on Sun Dec 20, 2015 6:25 pm; edited 1 time in total
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
The plane originally came with a non-steerable tail wheel. I couldn't see the sense in installing a throttled engine without a steerable tail wheel.
Last edited by fit90 on Sun Dec 20, 2015 6:27 pm; edited 1 time in total
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Here is a quick shot of the main gear and the fuel tank vent. With the tank vent on the bottom of the fuse the fuel will not get on the aircraft when I fill the fuel tank.
Last edited by fit90 on Sun Dec 20, 2015 6:31 pm; edited 1 time in total
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
This is a right side up pic of the whole thing up to this point.
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Very nice. Looks like you're really thinking this build through.
Oldenginerod- Top Poster
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Age : 62
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Re: Does anyone have any experience with a Cox Mantis?
I like the way you have everything configured into logical presence , and adding the tail was good your right ,whats the use in throttle with out ground control . Looking good fit90. getback
getback- Top Poster
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Posts : 10437
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Does anyone have any experience with a Cox Mantis?
Looks good. Be carefull with that spring starter though. My experience is that Tee Dees eventually eat the spring, it would wrap up around that carb pretty good when it happens.
Jim
Jim
JPvelo- Diamond Member
- Posts : 1972
Join date : 2011-12-02
Age : 57
Location : Colorado
Re: Does anyone have any experience with a Cox Mantis?
Jim,
Thank you for the heads up on the spring starter. I have had that happen with the silver ones and have found that they can be re-bent a little to keep them away from the prop. I have not had any issue with the black springs, yet.
Thank you,
Bob
Thank you for the heads up on the spring starter. I have had that happen with the silver ones and have found that they can be re-bent a little to keep them away from the prop. I have not had any issue with the black springs, yet.
Thank you,
Bob
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Finished wing
Last edited by fit90 on Tue Dec 29, 2015 8:48 am; edited 1 time in total
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
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Re: Does anyone have any experience with a Cox Mantis?
Everything together just waiting for final assembly
Last edited by fit90 on Tue Dec 29, 2015 8:48 am; edited 1 time in total
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
All the radio gear, including the battery and switch weighs just 2.5 ounces.
Last edited by fit90 on Tue Dec 29, 2015 8:50 am; edited 1 time in total
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Three JR SM22 servos, a Spektrum 2S 300 mAh LiFe battery, a SpektrumAR400 4 channel receiver and an unknown manufacturer's switch
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Got the servos installed tonight. Having a little trouble getting the throttle linkage working smoothly. I will post some pics after I get the throttle linkage sorted out
fit90- Diamond Member
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Join date : 2011-08-11
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Re: Does anyone have any experience with a Cox Mantis?
I also made a new brass, leaf spring steerable tail wheel assembly. Hopefully pics tomorrow.
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Here are the servos
fit90- Diamond Member
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Join date : 2011-08-11
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Re: Does anyone have any experience with a Cox Mantis?
And here is the new and improved tail wheel assembly. That is a piece of fuel tubing over the tail wheel assembly wire. It will be attached to the rudder with a strip of covering material.
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Looking Good fit90 I like the improved tail wheel assy. Are you going to make a tray for the battery and rec. to sit in , I see the bottom is the wing right now . getback
getback- Top Poster
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Posts : 10437
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Does anyone have any experience with a Cox Mantis?
Kind of. I glued a piece of 3/32" balsa cross grain across the top of the fuselage to mount the receiver and battery to with Velcro. I will post a picture this weekend. I am hoping to completely finish the model and run the installed engine this weekend.
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
I am waiting for some pics to go from my phone to my email. I will post them if and when they show up. I finished it! I went to run it and taxi it up and down my drive way but ran into some issues. The tee dee had a habit of just dying at idle. Plus, it idled way high. It ran like a kittle on the test stand. Guess things didn't move to the airplane as well as I hoped. I switched to a medallion which has an aluminum carb body, starter spring, carb and a coxengines.com "tee dee power" piston/cylinder. I am hoping the different intake in the crank shaft will tame the idle characteristics. I have registered with the FAA, re-joined the AMA and will send in my application and dues to re-join my R/C club this week. I would love to be able to maiden this plane in the next month or so. But, first, I need to get the engine sorted out thoroughly. Pics to come.
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Here is the final radio installation.
fit90- Diamond Member
- Posts : 1341
Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
Here are a couple of the tail wheel
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
Re: Does anyone have any experience with a Cox Mantis?
And here is one of the radio switch from the outside of the fuse
fit90- Diamond Member
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Join date : 2011-08-11
Location : Naples, Florida
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