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Century Radikal E640 - Swift 16 NX
› SWIFT - "THIN" landing strut issue...
02-06-2006 04:40 PM  12 years agoPost 1
Pistol Pete

rrProfessor

Seffner, FL

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I just uploaded to my galley my "fix" for the infamous thin landing strut that snaps on a hard landing...(even on grass)

I cut down all legs to 4 inches long and used the boom from my first crash. Used dremel and a cut-off wheel to cut a "rectangular" notch in the boom...errr...new landing tube. Legs have a "T" shape to it (hence the rectangular shape notch) so I pressed fit legs into place as the aluminum tube will bite into the plastic and it won't budge out. I "bungeed" 3 lbs dumdbell to test. You can epoxy or JB weld if you would like it to be more permanent.

A new boom goes for $4 versus $9 for new landing struts...do the math. I can't figure out why they cost so much compared to $14 for the fuselage which has much more plastic material. To boot landing struts are not included in a crash kit...what are the odds this wont break in ANY crash as thin as they are at the bottom? They know where to get you.

It just added 10 grams (big deal) as opposed to the original landing tubes. Now if only I could give it a little bend in the front without kinking. Most likely I will plug ends with some "bullet" shaped balsa to give it some appeal and keep dirt out and from diggin into dirt...just in case.

By the way...once cut down to 4" it's pretty beefy and very hard to break.


.

~~Enjoying the hobby one flight at a time~~

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02-06-2006 05:23 PM  12 years agoPost 2
SRH990

rrKey Veteran

Birmingham, UK

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I found that boiling the struts in water for around 10 minutes really seemed to make them less brittle and my last few flights have been in temperatures around 2 - 3 degrees centigrade. The only down side is that storing the heli with the blades in a blade caddy now has the tail fin sitting on the ground at the rear legs have spread (sheesh, starts as a recipe soundalike and ends like a porn video )

Steve -Trex 700N, Trex 600N, Raptor 550E, 450SE, Mini Titan, Logo 5003D, Beam E4

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02-08-2006 02:35 AM  12 years agoPost 3
yamahajoe

rrApprentice

ROGERS , AR 72758

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Do you have any trouble with the tail rotor hitting the ground since you lowered your heli.

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02-08-2006 12:46 PM  12 years agoPost 4
Pistol Pete

rrProfessor

Seffner, FL

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joe...no...not at all. Tail blades are just fine.

As I don't have a new set, I can't tell you how much I took off in comparison. I went with 4" in order to make them all the same. When it broke, they did not all break at the same place, per say, so I went with that as a guidline. (makes sense?)

On my first crash, the vertical tail fin broke which I replaced with some stock aluminum that I had from a previous project. Photos in gallery. As I could not find the bottom broken piece, I pretty much used the height of the "repaired" landing strut as a guideline. The "repaired" landing strut was done with a heat gun to melt/mend them back together...until they broke again on another hard landing (auto)

I then decided to buy a new set and once they broke again, that's when the light bulb kicked on and the first bent boom became my landing tubes. Personally I like it as it makes it look "beefier" and indeed it is.

I then "trimmed" my vertical tail fin to make heli level again.

Perhaps you can post measurements on landing strut as well as vertical tail fin as mine have been replaced. thanks.

~~Enjoying the hobby one flight at a time~~

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03-03-2006 12:06 AM  12 years agoPost 5
helijohn

rrApprentice

UK - Birmingham

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Noticed today that the Century Hawk undercarriage looks like it could be a good replacement fitting for the Swift ones.
http://www.heli-world.com/Merchant2...&Category_Code=

http://www.modelhelicopters.co.uk/c...l%23a4492#a4492

Hole spacings are different but easy enough to drill new holes. Strong, fairly tall, light and a touch wider overall. Couldn't try mine though as I used the set I have on my Eco 8!
Raptor ones are pretty light and the predrilled holes almost match though the heli will be 2.5" lower but the tail blades will still clear the ground by about 1/2".

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03-03-2006 01:07 AM  12 years agoPost 6
Pistol Pete

rrProfessor

Seffner, FL

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they have new version out....much thicker...have not purchase one personally as im a tinkerer and have a shop full of tools and too many ideas in the attic

~~Enjoying the hobby one flight at a time~~

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03-03-2006 08:51 AM  12 years agoPost 7
SRH990

rrKey Veteran

Birmingham, UK

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People who've used a Hawk under carriage set put two of the plastic spacers supplied between the rear skid & the heli with none at the front, this tips the heli forward enough to give clearance for the tail.

Steve -Trex 700N, Trex 600N, Raptor 550E, 450SE, Mini Titan, Logo 5003D, Beam E4

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03-03-2006 02:33 PM  12 years agoPost 8
helijohn

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UK - Birmingham

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I think I will use my Raptor spare undercarriage if the originals get broken as they seem fairly lightweight at 140g. Ooops, no I won't - they're too narrow at the business end.

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03-04-2006 05:17 AM  12 years agoPost 9
helibeeg

rrNovice

Auckland, New Zealand

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Here's an image of my Swift (or should it be Swiftor) with Raptor 50 legs and Raptor 60 (modified) vert fin. I used a heat gun to gently bend the legs down to give them more height.

My Swift is running an Aveox motor and 515 Funkey Carbon blades

Brian

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03-04-2006 08:32 AM  12 years agoPost 10
helijohn

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UK - Birmingham

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Nice.......
Can you tell me......are the Raptor 50 legs different from the 30? Thinking about the width of the part that joins the frame!!!!!
What happened to the original undercarriage?

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03-04-2006 04:19 PM  12 years agoPost 11
lowandslow

rrKey Veteran

Spring Hill, TN

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Looks like the vert fin is taller than the gear. Maybe just an illusion?

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03-04-2006 05:14 PM  12 years agoPost 12
HugeOne

rrKey Veteran

Quebec, Canada

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I think I'm gonna make a pair of these for my swift, they are quite strong and I like the style.

Raptor e620 w/V-bar, Tango 45-06, Phoenix 85HV, TrueRC 12S1P 4000mAh

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03-04-2006 07:46 PM  12 years agoPost 13
helibeeg

rrNovice

Auckland, New Zealand

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The Raptor 50 and 30 legs are the same.

The original spindly legs broke when I was flying with 550 blades which produced a wind down wobble. I landed on rough ground and the shake was enough to break one leg just above the joint to the skid.

The tail fin is probably a couple of mm too tall but the heli does sit flat. A Raptor 50 tail fin would probably be a better match but the 60 tail fin was in the parts bin

Brian

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03-04-2006 10:51 PM  12 years agoPost 14
helijohn

rrApprentice

UK - Birmingham

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That's useful to know - thanks. I was about to have a go with my old Rappy undercarriage but your idea of using the heat gun made me think. So I have been experimenting this afternoon with an old Quickuk heavy duty landing gear set. I've shortened the skids as they were way too long and it saves weight. The struts are fairly long so when they are bent down you get some good height. there is about a finger clearance under tha vertical tail fin. I'm considering drilling out the struts to reduce weight even more. Mainly, they'll be as tough as stink. Take a look, see what you think.

http://img.photobox.co.uk/957049372...856e3197ac6.jpg

http://snap24.photobox.co.uk/589636...c81d056c807.jpg

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03-06-2006 11:05 AM  12 years agoPost 15
Newbie06

rrNovice

Singapore

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Wow, the one with the raptor struts looks much nicer than stock, low and cool~!

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03-06-2006 11:15 AM  12 years agoPost 16
SRH990

rrKey Veteran

Birmingham, UK

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helijohn,

I get picture unavailable on all your links.

Steve -Trex 700N, Trex 600N, Raptor 550E, 450SE, Mini Titan, Logo 5003D, Beam E4

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03-06-2006 02:32 PM  12 years agoPost 17
helijohn

rrApprentice

UK - Birmingham

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Right thanks, trying again.
Weighed the undercarriages:
Raptor 145g
Quickuk heavy duty 185g
Swift OE 85g
Modified Quickuk 160g (top lip removed and shortened skids)

So I will be lightening the U/C some more very soon.
There's 5/8" clearance under the vertical fin.

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03-06-2006 02:36 PM  12 years agoPost 18
coolice

rrKey Veteran

Northamptonshire, England

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Hey,

I wanna fit some of these Quick skids so I can have the tarty bright coloured one's
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

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03-06-2006 03:22 PM  12 years agoPost 19
helijohn

rrApprentice

UK - Birmingham

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[color=blue]Funnily enough I have a spare pair of the luminous yellow and I was half tempted to use them but they've seen better days - abused on my long departed Shuttle - plus I had one in black I did already before the one you see on the image of the bird! So now I have a spare.
I have put the skids on a weight loss programme and they are down to 150g.

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