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Re: Murray River Boat

Posted: Sat Jun 29, 2013 3:21 pm
by Charles uk
Colloidal silica or cotton fibres?

That is some bench can I borrow it?

Re: Murray River Boat

Posted: Sat Jun 29, 2013 4:08 pm
by Horsley-Anarak
Charles uk wrote:Colloidal silica or cotton fibres?
Looks very white for that and very neatly applied. thought it may be a gun applied fillet.
fillet.jpg
fillet.jpg (47.09 KiB) Viewed 4487 times
H-A

Re: Murray River Boat

Posted: Sat Jun 29, 2013 6:11 pm
by david doyle
Silica for sure. H-A if you cut a rubber spatula to the right shape, get the right mix and stay sober during the application it runs on very true. Wet the ply with straight resin first and apply fillet just before it tacks up and get grabby. i.e it is still wettish but not enough to drip. What do you use with your poly resin? The silica is dirt cheap I bought 5 pounds years ago and it came in a 2 foot x 2 foot box and should last about forever.

Re: Murray River Boat

Posted: Sat Jun 29, 2013 6:27 pm
by Horsley-Anarak
david doyle wrote: What do you use with your poly resin?
Silica, it is not that white.

H-A

Re: Murray River Boat

Posted: Sat Jun 29, 2013 7:16 pm
by Horsley-Anarak
How heavy are golf clubs ?

http://www.murrayriver.com.au/golfing/

H-A :)

Re: Murray River Boat

Posted: Sat Jun 29, 2013 9:51 pm
by Charles uk
Silica is only a thickening agent like cornflower probably also contains cotton fibres or glass to give some strength to the fillet before taping over, epoxy penetrates timber better than poly & vinylester but without a very low viscosity epoxy sealer/primer like episeal will still tear the ply apart under severe loading.

Re: Murray River Boat

Posted: Sun Jun 30, 2013 1:12 am
by david doyle
Silica, it is not that white
Image
Cab-o-sil is light weight, low density fumed silica powder additive for use in all types of resins and gelcoats although, when used to thicken polyester or vinylester resins, creates an excellent medium sanding, non-slumping compound.

This stuff (what I use) is white as the driven snow and strong like bull. The corse silica I have used in blasting cabinets is also pretty darn white. Maybe all your brit silica got too much coal dust on it back in the day? :lol:
One neat thing about it also is that it takes pigment well, Lime green chine anyone? With UV stabilizer and pigment you could do the ply in one color (i.e apply FG before construction) and then contrast with a colored chine log.......

Tons of ways to make a boat float no wrong way if the skipper is pleased.

Re: Murray River Boat

Posted: Sun Jun 30, 2013 3:30 am
by croweater
We are using West Systems Epoxy and powders the boats will be full Epoxy boats, they won’t have a
flash paint job as they’re going to get knocked around can redo it later.

http://www.westsystem.com.au/west_syste ... _hardeners

John

Re: Murray River Boat

Posted: Sun Jun 30, 2013 5:06 am
by david doyle
Knocked about I guess! that is going to be a 'hard on gear' adventure to be sure. To be honest I never understood fancy bright work myself, battle ship grey accented with fish scales and goose blood on good clean lines is as pretty as any boat needds be IMHO.

Re: Murray River Boat

Posted: Mon Jul 01, 2013 12:12 pm
by croweater
Horsley – Anarak: There’s a few courses missing from that list, no time for golf may take a club for the Joe Blakes.

Bottom Planks fitted it’s starting to look like a boat, very happy so far roll on Saturday.

Image

Image

Image

John

Re: Murray River Boat

Posted: Thu Jul 11, 2013 12:50 am
by croweater
Top Planks are on looks like a boat now we are hoping to turn it over in a week or two.

Image

John

Re: Murray River Boat

Posted: Thu Jul 11, 2013 8:00 am
by Stelios_Rjk
Great job, the result will be rewarding!

Do anyone know where could I find plans for a speed boat around 4m long, V hull, powered from a 15hp 2stroke engine that weights around 40kilos? :mrgreen:

Re: Murray River Boat

Posted: Thu Jul 11, 2013 10:28 am
by Horsley-Anarak
Stelios_Rjk wrote: Do anyone know where could I find plans for a speed boat around 4m long, V hull, powered from a 15hp 2stroke engine that weights around 40kilos? :mrgreen:
These guys do some nice boats.

http://www.bowdidgemarinedesigns.com/Bo ... index.html

H-A

Re: Murray River Boat

Posted: Mon Jul 15, 2013 11:38 pm
by Charles uk
It's gone very quiet, you must be about to pull it off those frames, what's happening?

Re: Murray River Boat

Posted: Tue Jul 16, 2013 9:42 am
by croweater
Just because we have been quiet it doesn’t mean little has been happening it’s those little jobs that
chew the time I took the weekend off and shot up to Wentworth to look at the Junction Rally and
play with a steam launch. Alan (boat number 3) has soldiered on and spent hours taping and lofting
the furniture patterns he has built 95% of the boat I am only able to get there on Saturdays 1½ hour
drive to the shed. This Saturday it gets turned over and next week we start on boat number 2

Stelios: I bought a set of Mark Bowdidge plans (Bosuns mate 23) they are very good and his back up
service is second to none as they say you get what you pay for.


Image

The Transom and Stern after the framing has been removed, neat eh!

Image

Today’s Side shot.

John