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Using liquid fiberglass on plastic blades


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Bobby A
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Joined: 16 Apr 2011
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PostPosted: Thu Apr 28, 2011 6:54 pm
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Hi Bobby here again, saying I was trying to hunt some carbon fiber main and tail blades for my fixed pitched heli that I own, but couldn't find any, so I was thinking of reinforcing some ordinary plastic blades with liquid fiberglass don't know if that will help or not Confused
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admiral
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Joined: 20 Mar 2009
Posts: 1073
Location: Brisbane, Australia

PostPosted: Thu Apr 28, 2011 8:00 pm
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Hi Bobby A,

Your biggest problem would be maintaining blade balance both static and dynamic, a better solution would be to find a supplier of cheaper blades, what is the Brand & Model of the helicopter that you have ?

Or there is a guy on this forum that manufactures his own from PVC pipe, he seemed to have a lot of success,I think he was from New Zealand, use the search engine to go back through the old posts
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solentlife
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Joined: 30 Dec 2010
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Location: Latvia / UK

PostPosted: Thu Apr 28, 2011 8:35 pm
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Given the lethal capability of a model helicopter blade ........... I would not be too happy with that sort of diy work .......

But anyway ... you'd have quality control issues ... how to get the blade evenly covered and balanced ....... it's not a job to smooth it on and leave to cure. It needs a mould etc. etc.

Most heli's you can buy packs of blades on ebay cheap enough ....

Second if you strengthen a part ... you often move damage point to next item etc. In so doing end up worse problem than you try to solve.
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Bobby A
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PostPosted: Thu Apr 28, 2011 8:36 pm
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The brand of RC helicopter I have is an Exceed RC Classima 300 4 channel
RC helicopter
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chopper54
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Joined: 15 Jan 2010
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Location: suffolk UK aged 61

PostPosted: Thu Apr 28, 2011 8:58 pm
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that heli looks like a flybarless model. is it possible that messing with the rotor blades could upset the stabilisation system and cause erratic control.
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Bobby A
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PostPosted: Thu Apr 28, 2011 9:22 pm
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It is a flybarless, and I didn't know about causing instability, the only thing I know is I check to make sure they are perfectly straight when I replace them I also tighten the screws also, don't know how tight they should be though.
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chopper54
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PostPosted: Thu Apr 28, 2011 10:47 pm
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the general rule with blade tightness is if you hold the heli on its side with the blades out straight they should stay in place under their own weight. but give the heli a gentle shake and they should be loose enough to droop. you can experiment though to see how your heli behaves with differing blade tightness.
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tombo242
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Location: Santo Estêvão, East Algarve, Portugal. Now 81, but still feels 19.

PostPosted: Fri Apr 29, 2011 2:35 am
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Don't even think about it. Good way to smash up a lovely heli.

Tom.
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Crashagain
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Joined: 17 Jan 2008
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Location: Redding, Northern Calif.

PostPosted: Fri Apr 29, 2011 8:16 am
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+1 on what Tom said. Being flybarless, you would be so out of balance as well as the aerodynamics of the blades would be compromised, the heli would shake something horrible, causing the flybarless contorller to have fits trying to hover. I would bet money that if you tried to spool it up, it would just do a hard lean to the right or left and crash before you even get off the ground. These systems are really touchy and like a smooth bird.
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solentlife
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PostPosted: Fri Apr 29, 2011 2:10 pm
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Answer : eBay and buy a bag-full of blades ... as you work through them - discarding them as you chip / crack / damage them ... you get to halfway through pack ... order another bag-full.

Is it big / powerful enough to have training gear fitted ? I wonder if you are clipping blades when tipping over ?
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Bobby A
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PostPosted: Fri Apr 29, 2011 6:57 pm
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I'll be buying training gear for it today,along with other spare parts. Smile
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laneritc
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Joined: 08 Mar 2011
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Location: georgia

PostPosted: Sat Apr 30, 2011 10:09 pm
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hi bobby this is lane your copter looks like clone of cb180z walkera ck out wowhobbies they got three pack of blades for about $10.00
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Burgess
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Joined: 27 Mar 2012
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Location: Wales

PostPosted: Thu May 08, 2014 12:11 am
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Hey titu103, way-back in 2011, where Bobby spoke of ‘liquid fiberglass', he was referring to polyester resin. E-liquids are something very different...so your link hardy any connect, definitely off-topic.
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tombo242
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Location: Santo Estêvão, East Algarve, Portugal. Now 81, but still feels 19.

PostPosted: Thu May 08, 2014 12:37 am
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Hi Burgess,

Silhouette is off at the moment but a spam report on this guy is there waiting for Sils' return. Smile

I don't think he'll be around very much longer! Laughing

Tom.
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Burgess
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Location: Wales

PostPosted: Thu May 08, 2014 1:11 am
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Hi Tom from a wet and windy Wales..did have some quite good weather recently though...I should-have taken photos.

Here are some coax blades that I made for my Salvation two some time back, bamboo, bamboo and mahogany, and the white ones from a washing-up bottle..they were just too flexible so they made a lot of noise and generated very little lift.



I got the bamboo from Tesco

I've recently changed to Opera and can't seem to get the Similies to work. something to do when it's raining...so I'll have lost of chances to try things.

Burgess
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