Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Magnum crash

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Old 01-12-2003, 05:58 PM
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Cactus.
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Default Magnum crash

A Magnum crashed today while doing a slow roll, the wing expolded from the fuz just as down elevator was applied leaving the fuz at 200MPH in a shallow climb which took a few hundred feet to come down at full throttle and no control.
first look the engine is ok, nothing left of the plane.
This ISNT a defect in the plane, it was one of the first built and had two hard years, possible cause could be the central wing bolt added that could have over stressed the centre of the wing.

the impact site.
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Old 01-12-2003, 06:02 PM
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Default Magnum crash

the remains
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Old 01-12-2003, 06:34 PM
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ChuckAuger
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Default Oooopppsss.

Nice divot.
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Old 01-12-2003, 07:11 PM
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Default smacking balls

should'nt you REPLACE YOUR DIVOT ?
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Old 01-13-2003, 12:14 AM
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Default Next time use a post hole digger

Phillybaby,
must have been somthing to see. Better luck with the next one. Pete
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Old 01-13-2003, 04:15 AM
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Default Magnum crash

Now that's what i call a lawndart!
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Old 01-13-2003, 10:33 AM
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Default WHEEEEEOOOOW...BHOPH

Don't you just love the way the sound keeps on echoing over the field after the fuse of a speed machine takes off on its own and digs a hole several hundred feet away...?

Also the dry BHOPH on impact is quite noticable...

Was this yours? Sorry for your loss...
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Old 01-13-2003, 11:33 AM
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Default Magnum crash

no it wasnt phillybabys it was mine never mind new one on the way for more high speed fun!!!!!!!!!!!!! it had a lucky life that probably lasted too long anyway
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Old 01-13-2003, 12:21 PM
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Default Central wing bolt?

Where (and why) did you add that bolt exactly John?

How is the wing mounted standard? One or Two bolts?

I have one underway too, so I'm a bit curious as to what mods people make, and why they do so...
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Old 01-13-2003, 12:49 PM
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Default Magnum crash

thats a fine trench it dug john.
cartman
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Old 01-13-2003, 05:42 PM
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Default Magnum crash

Where (and why) did you add that bolt exactly John?
During the build he didnt like the idea of those machine bolts so he replaced it with a nylon bolt. this has worked well but when we found the wing Barry noticed the wing bolt was pinching the central brace and could have pulled it too tight to the fuz causing the top of the joint to fail, this would be fine during normal flight but let go inverted. This is only a guess but looks plausable.
As for other mods... the nose floor needs reinforcing.

RampRat...
this is a lawn dart... My Pheonix in the first week of the year
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Old 01-15-2003, 01:18 PM
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Default Magnum crash

i replaced the 2 m3 screws because i have seen planes with metal wing bolts have them shaken out and the result is a loss of wing so i put 1 6mm nylon bolt in and what hasnt been said yet is that i have had the plane for arround 2 years and comes out every time i went flying so it got used not like some planes that make it out once a year and last for 10 years dont matter now new one is here give it a week i will do it all again
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Old 01-15-2003, 05:49 PM
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Default Magnum crash

This ISNT a defect in the plane, it was one of the first built and had two hard years
well i said hard years mate was just thinking.. if the wing bolt plate is low in the fuz, some block balsa to fill to the wing seat may stop the bolt pulling the wing down too hard and take pressure off the joint.
right, im off to find that thread about A GRRT in a Magnum
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Old 01-16-2003, 02:22 AM
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Default Magnum crash

Originally posted by phillybaby

was just thinking.. if the wing bolt plate is low in the fuz, some block balsa to fill to the wing seat may stop the bolt pulling the wing down too hard and take pressure off the joint.
....I thought this was standard procedure...
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Old 01-16-2003, 05:11 PM
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Default Magnum crash

it will be for me when i get one
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Old 01-17-2003, 07:02 PM
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Default Magnum crash

new one is half built and im going to use the kit way of holding the wing on cos it is quite well proven i know the first one is still in one peice so it cant be that bad
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Old 01-17-2003, 07:36 PM
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Default Magnum crash

already! sunday first flight maybe? how was the old one fitted? but that was a solid balsa wing... i think the balsa block bit maybe still be a good way
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Old 01-18-2003, 05:43 PM
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Default Magnum crash

yes, that could be a possible cause
just dont crash the sabre, i wont accept any possible cause lol
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Old 01-18-2003, 07:03 PM
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Default Magnum crash

thanks, now you've jinxed it.
anyway, you just watched me build that one, i've already crashed Pheonix, but it wasnt bad.
See you soon Gigglepig
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