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Search: Posts Made By: sayno2glo
Showing results 1 to 25 of 29
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Forum: Composites Fabrication And Repair
09-19-2004, 03:04 PM
Replies: 10
Views: 1,076
Posted By sayno2glo

RE: Mold cleanup...

Glad you solved the problem. I'm surpriced that PVA didn't help.
Forum: Composites Fabrication And Repair
09-19-2004, 02:55 PM
Replies: 25
Views: 2,793
Posted By sayno2glo

RE: Painting in the mold

Here is few of my creations.
First is painted mold for my racer. The black color in the middle is in the mold, but it's otherwise gray.
Last one is taken just before bolting halves together.
...
Forum: Composites Fabrication And Repair
09-19-2004, 02:42 PM
Replies: 10
Views: 1,076
Posted By sayno2glo

RE: Mold cleanup...

I've had this happen to me many times. It's not necessarily because lack of release agent but just bad adhere between paint and plug. I would just scrape it off with Slowflyer prop or similar. With...
Forum: General Racing Discussion
09-12-2004, 04:51 AM
Replies: 25
Views: 3,191
Posted By sayno2glo

RE: Questions for Viper 500 pilots

Sorry I did not consider Nelson powered Q500 since I have not seen or flown one yet. I seems that with plenty of power it's more efficient to run higher pitch like electric gliders F5B use 17x21...
Forum: General Racing Discussion
09-11-2004, 10:25 AM
Replies: 25
Views: 3,191
Posted By sayno2glo

RE: Questions for Viper 500 pilots

Don't get too serious here;) I'm with daven. You make your calculations based on numbers on the blade? Wrong. Have you actually measured the pitch? Do you know what's the zero CL angle of the blade...
Forum: Composites Fabrication And Repair
08-01-2004, 01:14 PM
Replies: 18
Views: 1,521
Posted By sayno2glo

RE: Edges of molds

cando,
The result is lighter and stronger compared to glass fiber strip. This method needs to be vacuum bagged as you might think.
Best way to make a fuse is to use a bladder and about 2bar...
Forum: Composites Fabrication And Repair
07-31-2004, 04:45 PM
Replies: 18
Views: 1,521
Posted By sayno2glo

RE: Edges of molds

This is electric pylon model's fuse mold with flanges attached.
Oh, and for strong mold edges I would try aluminum powder filled epoxy. Gelcoats are too brittle.
/Antti
Forum: Composites Fabrication And Repair
07-02-2004, 06:12 AM
Replies: 53
Views: 11,267
Posted By sayno2glo

RE: Wing Mold

I assumed you are building Q40 or similar but with Q500 the spar is not so critical. I don't know what you mean by .007 carbon fiber because I'm used to think it as number of 12k tows. I would put...
Forum: Composites Fabrication And Repair
07-01-2004, 04:25 PM
Replies: 53
Views: 11,267
Posted By sayno2glo

RE: Wing Mold

...Avionik Killer...[:@]
There it is, intentionally fuzzy picture of it:)
/Antti
Forum: Composites Fabrication And Repair
07-01-2004, 04:00 PM
Replies: 53
Views: 11,267
Posted By sayno2glo

RE: Wing Mold

Mother of all molding threads:
http://www.rcgroups.com/forums/showthread.php?s=&threadid=141255&perpage=15&highlight=Eisvogel&pagenumber=10

I would go for contest grade balsa because it's...
Forum: Composites Fabrication And Repair
03-05-2004, 03:03 AM
Replies: 9
Views: 2,362
Posted By sayno2glo

RE: fuel tank

In aircraft industry they use somekind of rubber which is poured it to tank and then the tank is rolled so it gets to every corner. Then exess rubber is poured out and the rubber sets hard. It can...
Forum: Composites Fabrication And Repair
11-15-2003, 01:27 PM
Replies: 32
Views: 5,454
Posted By sayno2glo

RE: Types of Kevlar

Todd,
In European competition models that surfase coat is usually vorgelate.
See http://www.emcvega.de/matlist/7.htm
I have used it to F5D models and its light and durable. You mix it with 8%...
Forum: Composites Fabrication And Repair
07-17-2003, 05:12 PM
Replies: 7
Views: 897
Posted By sayno2glo

mylar???

I use 0.35mm which is about .14"
Use one or two coats of release wax and paint it before laminating and you'll get fine looking wings.
Forum: Composites Fabrication And Repair
04-27-2003, 10:12 AM
Replies: 9
Views: 1,395
Posted By sayno2glo

post curing

I did that. It looked like this. sayno2glo attached this picture :p :
+-
U
Forum: Composites Fabrication And Repair
04-26-2003, 02:29 PM
Replies: 9
Views: 1,395
Posted By sayno2glo

wasn't a joke

I tried it with 0.5" wide and 4ft long carbon laminate 2 layers k12.
I sanded the ends and connected it to the car battery. It warmed but only few inches from connections got warm enough (~104F)...
Forum: Composites Fabrication And Repair
04-24-2003, 03:55 PM
Replies: 4
Views: 6,712
Posted By sayno2glo

Can I thin out PVA????

I found this from finnish forum.
For Dowland PVA: 60-70% water 20% PVA and 10-20% isopropyl alcohol.

/Antti
Forum: Composites Fabrication And Repair
04-24-2003, 03:49 PM
Replies: 9
Views: 1,395
Posted By sayno2glo

post curing

Someone told me to use carbon. I'm not sure if it was a joke or not but he suggested to laminate carbon cloth into the mold and to leave ends dry. Then contact 12v charger to dry ends to generate...
Forum: Composites Fabrication And Repair
04-14-2003, 01:39 PM
Replies: 9
Views: 1,395
Posted By sayno2glo

post curing

Thanks for your reply.
I was thinking of using resistance wires becouse sometimes molds are over 3m or 10 ft long so it would need one huge box ;)
My consern in how would epoxy or polyester mold...
Forum: Composites Fabrication And Repair
04-09-2003, 05:26 PM
Replies: 25
Views: 3,230
Posted By sayno2glo

What would you pay??

Guys you don't need a video to know how to do composites.
You need practise and use try and error method. There are no sectrets in building a composite plane. I can answer your questions with my...
Forum: Composites Fabrication And Repair
02-25-2003, 07:22 PM
Replies: 4
Views: 627
Posted By sayno2glo

Fiberglass and cyno

In some applications CA works well, but it's used to finish parts with light fiberglass. Control-line guys who save every gram uses thin CA to cover their elevators for example and then they paint...
Forum: Composites Fabrication And Repair
02-20-2003, 04:56 PM
Replies: 2
Views: 578
Posted By sayno2glo

vacuum ports

I have been using old joystick imukuppi (in Finnish) staight translation is suction cup :p you know those black things what holds joystick on the table. Drill small hole in the center and plug it in...
Forum: Composites Fabrication And Repair
02-15-2003, 01:56 PM
Replies: 15
Views: 6,135
Posted By sayno2glo

How can I apply thin layer of gelcoat?

I ment 100% :cool: . It should be very thin when you spray it on with small airbrush. When it gets to mold I think alot of acetone is gone already. I think any polyester gelcoat works that way but...
Forum: Composites Fabrication And Repair
02-14-2003, 05:02 PM
Replies: 15
Views: 6,135
Posted By sayno2glo

How can I apply thin layer of gelcoat?

All molded planes has polyester spray gelcoat surfase. It is simply thinned 100% with acetone by weight and sprayed on. It's called vorgelat and I buy it from here www.emc-vega.de/
Forum: Composites Fabrication And Repair
01-30-2003, 06:35 PM
Replies: 4
Views: 859
Posted By sayno2glo

Need Landing gear for Goldberg Extra 300

I have Bolly carbon landing gear in mine. http://www.bolly.com.au/models/undercarts.asp
or http://www.falconhobbies.com/Landinggear.html
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
01-18-2003, 08:45 PM
Replies: 0
Views: 596
Posted By sayno2glo

Graupner/JR smc-14

Anyone have experiences about this receiver?


/Antti
I fly electrics (and gas)
Showing results 1 to 25 of 29
 
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