Author Topic: Whizza!  (Read 32547 times)

Chairman

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Re: Whizza!
« Reply #15 on: 12/11/2014, 11:02:29 AM »
That's looking very tidy indeed Jim    ;D

Re: Whizza!
« Reply #16 on: 25/11/2014, 11:57:20 PM »
Well done Jim easy build is'nt it mate and youll love it . I have a spare canopy in black if you need one

Jim (Chairman)

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Re: Whizza!
« Reply #17 on: 05/12/2014, 04:04:34 PM »
Basic assembly (less ailerons):



The "bright silver" metallic covering film is very unforgiving! Every little bump / mark shows through...

The "carbon" wrapped cockpit looks OK, but again was very difficult to cover...
Building Winter 2015: Wiggo, Alliance (rebuild), Mini Whizzza (66% reduced plan), Foamie Spitfire (rebuild), SebArt Sukhoi SU-29 60E (rebuild)

Chairman

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Re: Whizza!
« Reply #18 on: 05/12/2014, 07:09:31 PM »
Looks great Jim, and a little bit different. Well done!

Re: Whizza!
« Reply #19 on: 05/12/2014, 07:26:54 PM »
Looks like another test flight the weekend then Jim

DannyF

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Re: Whizza!
« Reply #20 on: 12/12/2014, 03:05:33 PM »
Looks great Jim, and as you said the other evening, might be an idea to put a sticker or two on it, silver (gray) against a typically grey UK sky its going to vanish!
Just for information, I have a little Tucano and the motor is front mounted with no cooling at all and it is fine.
The problem comes if the motor and equipment is close to the limit and then they rapidly overheat, if you have plenty of margin and don't fly it flat out all the time you should be fine.
Good luck with the maiden :)
Cheers
Danny
"He who looseth his aerial best beware, for the ground shall rise up and smite him"

Jim (Chairman)

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Re: Whizza!
« Reply #21 on: 14/12/2014, 04:18:48 PM »
Anyone...

Has anyone got an approximate all-up flight weight for a Whizza?

9" prop, plan built (sort of) 3 cell 2200mAh LiPo running a 35-36 1450kV motor...?

Plans don't seem to say, or I'm going blind...

Cheers!
Building Winter 2015: Wiggo, Alliance (rebuild), Mini Whizzza (66% reduced plan), Foamie Spitfire (rebuild), SebArt Sukhoi SU-29 60E (rebuild)

Chairman

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Re: Whizza!
« Reply #22 on: 14/12/2014, 06:56:57 PM »
Hi Jim

Just back from a weekend away. (and just deleted a lot of new forum members that looked like spammers, then raised security levels here)

I'll weigh my Whizzza a little later and let you know.

TBH though, it was designed and flew well with a very heavy motor and heavy batteries, so I shouldn't worry too much.

Jim (Chairman)

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Re: Whizza!
« Reply #23 on: 25/12/2014, 11:36:43 AM »
Merry Christmas, one and all!!!

Spent Christmas Eve glueing wings onto my Whizza!

All the detailing and decals are finished, only the rudder to glue in and she's flyable...

Photos:







The eagle-eyed amongst you will notice a very small 8" low pitch prop. Just for show. I need to find some black 9" props.

Also, there is a non-deliberate mistake with the carbon decals, can anyone spot it?

Cheers!
« Last Edit: 25/12/2014, 07:15:17 PM by Jim Mchugh »
Building Winter 2015: Wiggo, Alliance (rebuild), Mini Whizzza (66% reduced plan), Foamie Spitfire (rebuild), SebArt Sukhoi SU-29 60E (rebuild)

DannyF

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Re: Whizza!
« Reply #24 on: 25/12/2014, 12:00:14 PM »
Well done Jim that looks great!
Merry Christmas
Cheers
Danny
"He who looseth his aerial best beware, for the ground shall rise up and smite him"

Jim (Chairman)

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Re: Whizza!
« Reply #25 on: 06/02/2015, 05:50:49 PM »
All,

There's been a bit of delay in posting this because I lost the photo!

Here's a picture of a standard aluminium motor mount after just ONE FLIGHT!



This mount was originally on my Whizza. I power tested the aircraft on the bench and then Chris Bott test flew it for me a couple of days later.

Motor test took about 4 - 5 minutes and the test flight was no more than about 3 minutes.

Also, the NTM Series motors are factory balanced (and they are) plus my props are all balanced, so vibration is minimal.

Complete structural failure of all four arms!

This mount came as part of the accessory pack for an NTM PropDrive 36-35 motor from Hobbyking. It had never been used on anything else.

I've since noticed (and brought) carbon fibre versions of the same mounting from Hobbyking.

Do Hobbyking know that they've got a quality control issue with these aluminium mounts?
« Last Edit: 06/02/2015, 05:55:38 PM by Jim Mchugh »
Building Winter 2015: Wiggo, Alliance (rebuild), Mini Whizzza (66% reduced plan), Foamie Spitfire (rebuild), SebArt Sukhoi SU-29 60E (rebuild)