450 Rooivalk project

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Re: 450 Rooivalk project

Unread post by Tomcat1 » Thu Nov 19, 2015 8:09 am

Theuns, are you also going to mold extensions for the rocket launcher and missile pods???
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Re: 450 Rooivalk project

Unread post by Theuns v V » Thu Nov 19, 2015 8:16 am

I have the stubwings and horisontal stabs here, I am still undecided as to weather I will be making them from molded epoxyglass or have them vacformed.
As you can see ,they will simply glue to the mounds that are molded into the fuse side.

I will let the blue cure for another day or so before I start the pollishing.

T
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Re: 450 Rooivalk project

Unread post by Tomcat1 » Thu Nov 19, 2015 11:57 am

Well either way, mold or vac, as long as they will be included :mrgreen: :mrgreen: :mrgreen:
Was also thinking about the undercarriage, whats your plans on that front Theuns???
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Re: 450 Rooivalk project

Unread post by Theuns v V » Thu Nov 19, 2015 2:44 pm

The kit will be supplied with the stab and pylon wings yes :)
As for the undercart, I am not sure yet, I was thinking of bent up piano wire to be the loadbearing unit with the "oleo" being simulated with pieces of brass tubing that can slide....these will be purely cosmetic.

T
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Re: 450 Rooivalk project

Unread post by Tomcat1 » Fri Nov 20, 2015 7:31 am

Well it is a 450 size heli so they don't have to be working scale, they just need to look scale :wink:
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Re: 450 Rooivalk project

Unread post by Theuns v V » Fri Nov 20, 2015 7:36 am

You can see them in the first pic on page 1 :)
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Re: 450 Rooivalk project

Unread post by Tomcat1 » Fri Nov 20, 2015 7:50 am

I meant the undercarriage Theuns :mrgreen:
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Re: 450 Rooivalk project

Unread post by Theuns v V » Fri Nov 20, 2015 8:18 am

Gotcha
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Re: 450 Rooivalk project

Unread post by Theuns v V » Sun Nov 22, 2015 9:21 am

I hope to get the pollishing done tomorrow so I can start the mold....this one will be a little more tricky than the spat mold 8-[
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Re: 450 Rooivalk project

Unread post by Theuns v V » Tue Nov 24, 2015 3:51 pm

Here is the plug just before molding, I have posted a tread about mold making so won't bore you with that here.

T
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Re: 450 Rooivalk project

Unread post by Theuns v V » Fri Nov 27, 2015 5:56 am

It is now confirmed....I am an idiot!
I made 1/2 the mold and I think it will look good once I have the plug out the mold. Then I worked on the other half yesterday only to "skrik wakker" this morning realizing I put the cottonflox/epoxy mix I use in the tight corners on without FIRST covering that whole side with gellcoat... FOOOOOOOK!!!!

I have to either carry on and hope that flox /epoxy mix went into those aread smooth enough ,altough I highly doubt it or try to break off those filler pieces and hope I do not damage the plug....also doubt that option.

Hopefully if I were to carry on as per normal and split to mold I will be able to use the plug again and re-do that 1/2 of the mold [-o< [-o<

Just goes to show, when things are going too well...look over your sholder cause it is bound to go wrong :wink:

Stay tuned

T
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Re: 450 Rooivalk project

Unread post by SNIPER » Fri Nov 27, 2015 7:14 am

Nooit Theuns that's another one for our mistakes thread, I have a new one to add aswell.
Hope you get it sorted.
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Re: 450 Rooivalk project

Unread post by F3P flyer » Fri Nov 27, 2015 7:23 am

Are you saying you forgot to put gelcoat at all or that you first did the fillets then gelcoat ?
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Re: 450 Rooivalk project

Unread post by Theuns v V » Fri Nov 27, 2015 8:00 am

I forgot to put the gellcoat on the 1/2 of the exposed plug before I put the epoxy/flox mix in all the corners :(

BUT, I lucked out bigtime. This morning (quite pi$$ed off at my stupidity) I tried to break off a piece of the flox mix and to my surprize it snapped off away from the mold in big chunks....the plug is still perfect - that is the value of good ram wax and PVA =D> =D>

I have washed the plug, will have to re-do the patternmakers putty in the plug to plate joijts, pollish and PVA again - this time rememering the damn gellcoat!
The flox mix that broke off is actually still usable, I will bed them into the gellcoat when it starts to set.

So it seems things here at "van Vuuren aero-space" is still on track :lol:
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Re: 450 Rooivalk project

Unread post by F3P flyer » Fri Nov 27, 2015 8:31 am

Theuns v V wrote:I forgot to put the gellcoat on the 1/2 of the exposed plug before I put the epoxy/flox mix in all the corners :(

BUT, I lucked out bigtime. This morning (quite pi$$ed off at my stupidity) I tried to break off a piece of the flox mix and to my surprize it snapped off away from the mold in big chunks....the plug is still perfect - that is the value of good ram wax and PVA =D> =D>

I have washed the plug, will have to re-do the patternmakers putty in the plug to plate joijts, pollish and PVA again - this time rememering the damn gellcoat!
The flox mix that broke off is actually still usable, I will bed them into the gellcoat when it starts to set.

So it seems things here at "van Vuuren aero-space" is still on track :lol:

Oh now I see, see how well PVA works !!!!! :)

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