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Could you help me choose a model for a 0.8 engine ? Cox_ba12





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Could you help me choose a model for a 0.8 engine ? Empty

Could you help me choose a model for a 0.8 engine ?

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Could you help me choose a model for a 0.8 engine ? Empty Could you help me choose a model for a 0.8 engine ?

Post  Mehdi Wed Nov 03, 2021 8:20 am

Hi everyone. My name's Mehdi. I'm a 36yo french man who recently started to discover the cox engines world.
I bought some old 0.8 motors to restore, and now I have one finished and running.

Could you help me choose a model for a 0.8 engine ? Cox_re10

I would like to install it on a plane, possibly on something that won't be crazy fast. But I'm affraid tiny wingspan like this can only be fast ? Or can I achieve some " cruising " with moderate RPM ?

Could you help me choose a model for a 0.8 engine ? Cessna10
Could you help me choose a model for a 0.8 engine ? K05110

Do I necessarly need to install it on a way bigger wingspan, to enjoy "trainer" like flight characteristics ?

Thanks for reading me and for any opinion that will help me before I purchase anything !

Happy flying everyone !
Mehdi
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Could you help me choose a model for a 0.8 engine ? Empty Hello and Welcome Mehdi

Post  sosam117 Wed Nov 03, 2021 9:02 am

Hello and Welcome Mehdi,

The photo of the engine you have is of a Cox .049 engine.
If you are looking for a nice trainer type of plane to mount your Cox engine in, you could try a Tomboy airplane.
The airplane is easy to build and flies well as a trainer.
It is simple to build and cover and a gentle flier.
I have this plane in 6 different sizes. (36 inches, 44 inches, 48 inches, 54 inches, 60 inches,  and 72 inches)

Here is a web page for the plans though the plans here are for free flight.
https://outerzone.co.uk/plan_details.asp?ID=285

Here are the same plane but the plans enlarged for a bigger engine, and has been modified for radio control.
https://outerzone.co.uk/plan_details.asp?ID=12755

Or, you can purchase the 36 inch Tomboy kit from Belair kit:
http://belairkits.com/detail.asp?id=594

One last thing -----
Here is a link to a video of a Tomboy in flight with a .049 diesel though the Cox engine will do just a well.
click on the wording below:

36" wing span Tomboy with .049 diesel engine


Last edited by sosam117 on Wed Nov 03, 2021 9:16 am; edited 1 time in total (Reason for editing : misspelling)
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Could you help me choose a model for a 0.8 engine ? Empty Re: Could you help me choose a model for a 0.8 engine ?

Post  Mehdi Wed Nov 03, 2021 10:35 am

Hello sosam117 and thank you for your message.

The Tomboy is exactly what I'm looking for, and I notice your smaller one has a 36 inches wingspan.

Have you seen smaller ones ? I guess the small models I showed are totally not suitable for a .049 engine then.

The video link was wonderful !
Mehdi
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Post  sosam117 Wed Nov 03, 2021 6:32 pm

Mehdi,
The little planes you had photo of are more for small Cox engines like the .020 Pee Wee or better yet is the Cox .010 engine.
But what I have found out is the smaller the planes are, the tricker they are to fly because of the real small size.

The Cox Pee Wee engine is good for planes from 30 to 36 inch wing spans.

As for a Tomboy smaller than 36", no I have not seen one built that small.

Though you could reduce the plans to any small size you would want?
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Post  Mehdi Thu Nov 04, 2021 2:53 pm

Thanks once more sosaam117 for you input.

I know understood that a 20in model will definitely be super fast, and "touchy" to control with a Babe Bee installed on it.

I will focus on building a Tomboy, probably not a 36 inches one, but something around 30 inches Smile

I will keep the Forum updated about this project !
Mehdi
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