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Author Topic: 220mph Proximity  (Read 7448 times)

omegooliebird

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220mph Proximity
« on: August 29, 2019, 01:30:38 AM »

It's the modified VASA Fusion...the Omegooliebird....my desert island plane...the most exciting plane in the hangar..


« Last Edit: September 04, 2019, 09:31:04 PM by Coyote »
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urbanfpv

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Re: 220mph Proximity
« Reply #1 on: August 29, 2019, 09:37:36 AM »

Love it.   :thumbsup: What Lipos are you using?
« Last Edit: August 29, 2019, 10:15:13 AM by urbanfpv »
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omegooliebird

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Re: 220mph Proximity
« Reply #2 on: August 29, 2019, 06:39:11 PM »

Love it.   :thumbsup: What Lipos are you using?

These runs were with the Graphene 3,000mah 6s. 65c. 
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Dillwhacker

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Re: 220mph Proximity
« Reply #3 on: August 30, 2019, 07:19:09 PM »

Awesome stuff! Watched it about ten times  :o
I'd be interested to know what cameras you used?
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omegooliebird

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Re: 220mph Proximity
« Reply #4 on: August 31, 2019, 12:56:18 AM »

Awesome stuff! Watched it about ten times  :o
I'd be interested to know what cameras you used?

Hahaha, thanks! I've watched it a few times too :-) Have updated the video description and it includes all the parts used now, the cameras are Split-mini and swift-mini2.
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Coyote

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Re: 220mph Proximity
« Reply #5 on: September 04, 2019, 09:32:58 PM »

Epic ! :)
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Education and schoolin is good, but FPV is gooder :)

omegooliebird

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Re: 220mph Proximity
« Reply #6 on: October 24, 2019, 05:06:58 PM »

Ready soon...big step up with this one.. hoping to see well past 300mph..
« Last Edit: October 24, 2019, 05:13:15 PM by omegooliebird »
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Dillwhacker

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Re: 220mph Proximity
« Reply #7 on: October 24, 2019, 06:04:55 PM »

Ooooohhhh I love the smell of paraffin in the mornings.....
 :P
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FPVSteve

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Re: 220mph Proximity
« Reply #8 on: October 24, 2019, 09:27:35 PM »

That is not a plane it is an engine with wings - awesome!! Maiden eta?
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omegooliebird

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Re: 220mph Proximity
« Reply #9 on: October 31, 2019, 01:50:54 PM »

Maiden this winter for sure. Not decided on launch method yet, gonna cross that bridge when it's ready. Suggestions welcome lol! Landing will be the difficult bit at 2100g with fuel...1600g empty...the longer it is in the air the better. Looking like around 2 minutes of full throttle and 7-8 minutes at idle, so something in between that will be flight times. Physically ranged checked already at 3km and it was solid, even did a remote engine spool up! No autopilot, so it needs to be solid! EZUHF and 1.3 have always served me well though. This really is at the limits of the airframe, and it could well see transonic airflow in some parts over the top of the wing, so the chance of failure is high. Just got to put it out there and try though, cant add any more strength as the weight is already dubious. All in it has cost around 4k so far which sounds filthy, but it is the only way to go this fast. The wing servos are MKS 6130HV which are 75 each for starters! But 8kg/cm is what it will take and they are the same servos Spencer Lisenby has used for the Transonic DP that set the DS record @545mph, so well proven above my anticipated speeds. A lot of uncertainty with this project, but excitement in equal measure!
« Last Edit: October 31, 2019, 02:07:48 PM by omegooliebird »
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omegooliebird

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Re: 220mph Proximity
« Reply #10 on: December 08, 2019, 12:19:39 AM »

Paint on!...Decided i'm not happy with fuel tank outlet, so have to make a part on a lathe to bond in, with a screw in cap to fit the pipes to. Then fill it up with fuel and see how that affects the CG.. then run it.. Getting close to standing in a muddy field with soiled underpants...
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omegooliebird

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Re: 220mph Proximity
« Reply #11 on: December 08, 2019, 12:25:37 AM »

more
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omegooliebird

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Re: 220mph Proximity
« Reply #12 on: January 03, 2020, 12:24:58 PM »

More problems...but at least it has made some fire, so it is getting closer....

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FPVSteve

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Re: 220mph Proximity
« Reply #13 on: January 03, 2020, 03:23:55 PM »

why did it fail there Rupes? fuel supply?

Sounds fantastic though :) I could listen to that spooling all day :)
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omegooliebird

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Re: 220mph Proximity
« Reply #14 on: January 03, 2020, 10:08:57 PM »

So many problems together Steve.. Still not fully resolved it...

The fuel pipe was slightly undersize for this engine, in the tank and external lines too.
The fuel filter was before pump not after it like it should be.
The battery was too small.
There was resistance in the JST battery connection (bad metal on connector contact)
I had a current sensor on the fuel pump to use mAh as a 'fuel guage', it was upsetting the pump PWM.
My throttle calibration was not right.

Basically have to completely re-wire and re-plumb the whole thing! I was just doing a quick engine test prior to flying it, having tested everything successfully with the exact same set-up on a test stand before installing it all.

Absolutely gutted to be honest, I have had to undo a lot of bloody fiddly work and have to re-think quite a few factors. Bigger battery means more nose weight, which completely removes the need for all the very difficult and extremely time consuming work I did making the nose longer to get CG right...
« Last Edit: January 04, 2020, 01:31:30 PM by omegooliebird »
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