1/2A Size Dumas Boat Club
12-17-2015, 12:54 AM
#430
https://www.youtube.com/watch?v=SBiq6-_Xtb8
https://www.youtube.com/watch?v=SBiq6-_Xtb8 This is just one vid of about 6 that he has on the subject.
Guy put his vintage Fuji .049 water cooled / throttled Sea Horse outboard engine onto a plastic airboat.
Heavy but it worked as the stock prop is small enough to endure the load. Very rare to see 1/2A boats
actually recorded on vid for all to see. The modern Fuji .05 in a outrigger hydro should hit 30mph +
Example my Fuji .050 engine bench testing this one on a Profi 1/2A tuned pipe.
https://www.youtube.com/watch?v=xgyv-qbGirE
https://www.youtube.com/watch?v=xgyv-qbGirE
https://www.youtube.com/watch?v=SBiq6-_Xtb8 This is just one vid of about 6 that he has on the subject.
Guy put his vintage Fuji .049 water cooled / throttled Sea Horse outboard engine onto a plastic airboat.
Heavy but it worked as the stock prop is small enough to endure the load. Very rare to see 1/2A boats
actually recorded on vid for all to see. The modern Fuji .05 in a outrigger hydro should hit 30mph +
Example my Fuji .050 engine bench testing this one on a Profi 1/2A tuned pipe.
https://www.youtube.com/watch?v=xgyv-qbGirE
https://www.youtube.com/watch?v=xgyv-qbGirE
Last edited by Pond Skipper; 12-17-2015 at 12:57 AM.
12-20-2015, 10:33 AM
#432
Join Date: Feb 2006
Location: Den Haag, NETHERLANDS
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12-20-2015, 07:15 PM
#433
Okay we do look forward to seeing your efforts run on the water when you can. I need to vid some of my efforts too will record some 1/2A fun when the weather improves.
Last edited by Pond Skipper; 12-20-2015 at 07:26 PM.
12-30-2015, 06:07 AM
#434
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01-02-2016, 01:51 PM
#436
He has a huge collection of marine engines, most in running order!
http://e.a.t.chez-alice.fr/AAmoteursminiatures.html
Here is part one which show the set-up better:
https://www.youtube.com/watch?v=ITmxL2jqbZI
http://e.a.t.chez-alice.fr/AAmoteursminiatures.html
Here is part one which show the set-up better:
https://www.youtube.com/watch?v=ITmxL2jqbZI
06-28-2016, 05:59 AM
#437
https://www.youtube.com/watch?v=CHSDIkFAc5Q
Kid is going to hate growing out of this, CG is already off there is some
lake action vid somewhere.
https://www.youtube.com/watch?v=CHSDIkFAc5Q
https://www.youtube.com/watch?v=BfztF1lqGNQ
Kid is going to hate growing out of this, CG is already off there is some
lake action vid somewhere.
https://www.youtube.com/watch?v=CHSDIkFAc5Q
https://www.youtube.com/watch?v=BfztF1lqGNQ
Last edited by Pond Skipper; 06-28-2016 at 06:05 AM.
06-28-2016, 11:12 AM
#438
Join Date: Sep 2011
Location: , CA
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08-08-2016, 01:17 AM
#439
https://www.youtube.com/watch?v=qEKjR0_JjpA
https://www.youtube.com/watch?v=qEKjR0_JjpA Published on Sep 24, 2015
Saint-Savinien SAW 20/09/2015
.85cc or .0519 Cu. In. 1/2A size car engine.
33k rpm average
36,014 rpm best pass modified X427 prop / 48 mph.
44.7k rpm best static run up.
https://www.youtube.com/watch?v=qEKjR0_JjpA Published on Sep 24, 2015
Saint-Savinien SAW 20/09/2015
.85cc or .0519 Cu. In. 1/2A size car engine.
33k rpm average
36,014 rpm best pass modified X427 prop / 48 mph.
44.7k rpm best static run up.
Last edited by Pond Skipper; 08-17-2016 at 06:32 PM.
08-08-2016, 08:58 AM
#440
Join Date: Sep 2011
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https://www.youtube.com/watch?v=qEKjR0_JjpA
https://www.youtube.com/watch?v=qEKjR0_JjpA Published on Sep 24, 2015
Saint-Savinien SAW 20/09/2015
.85cc or .0519 Cu. In. 1/2A size car engine.
https://www.youtube.com/watch?v=qEKjR0_JjpA Published on Sep 24, 2015
Saint-Savinien SAW 20/09/2015
.85cc or .0519 Cu. In. 1/2A size car engine.
08-14-2016, 10:44 AM
#442
Not my rigger Maxi is out of France he is using the stock car pipe and header.
Last word was he was going to try a 1930 reshape and cut it down. Good
jump in pitch should have him pushing 60mph + Which is fassst for micro 1/2A!
These size boats can work well in small local ponds and still provide plenty of
heart thumping thrills, that and being so small and ferocious makes it very kewl.
Would be easy with a pull starter rather than having to deal with fabricating the
engine flywheel setup, his came without, most of the Picco's P-0 come with.
Point of view from the drivers side of the bank.
https://www.youtube.com/watch?v=tcy7-6OpQ9k
https://www.youtube.com/watch?v=tcy7-6OpQ9k
Last word was he was going to try a 1930 reshape and cut it down. Good
jump in pitch should have him pushing 60mph + Which is fassst for micro 1/2A!
These size boats can work well in small local ponds and still provide plenty of
heart thumping thrills, that and being so small and ferocious makes it very kewl.
Would be easy with a pull starter rather than having to deal with fabricating the
engine flywheel setup, his came without, most of the Picco's P-0 come with.
Point of view from the drivers side of the bank.
https://www.youtube.com/watch?v=tcy7-6OpQ9k
https://www.youtube.com/watch?v=tcy7-6OpQ9k
Last edited by Pond Skipper; 08-14-2016 at 10:51 AM.
08-14-2016, 08:36 PM
#443
Join Date: Sep 2011
Location: , CA
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Not my rigger Maxi is out of France he is using the stock car pipe and header.
Last word was he was going to try a 1930 reshape and cut it down. Good
jump in pitch should have him pushing 60mph + Which is fassst for micro 1/2A!
These size boats can work well in small local ponds and still provide plenty of
heart thumping thrills, that and being so small and ferocious makes it very kewl.
Would be easy with a pull starter rather than having to deal with fabricating the
engine flywheel setup, his came without, most of the Picco's P-0 come with
Last word was he was going to try a 1930 reshape and cut it down. Good
jump in pitch should have him pushing 60mph + Which is fassst for micro 1/2A!
These size boats can work well in small local ponds and still provide plenty of
heart thumping thrills, that and being so small and ferocious makes it very kewl.
Would be easy with a pull starter rather than having to deal with fabricating the
engine flywheel setup, his came without, most of the Picco's P-0 come with
08-20-2016, 03:25 PM
#444
And whaaalah the most ferocious 1/2A RC throttled rigger power plant is born.
I tapped the coupler to 4mm and the flywheel but really don't need the wheel
if I am going with pull start. I will reduce the handle size and tuck it in the rigger
when running. I used a prop drive collet and thrust plate so all prop thrust is
put on the bearing and not the engine parts from Mecoa, they carry the back
plate conversion too should I with to deal with belt starting. The grub screws
are robust 4mm cudo's to Joyway in those regards, 2 lock down the flex drive
very well. The other two for the motor side is a bit redundant as I get a solid
connection to the engines crank with plenty of threads. Really nice 1/2A set up
with the Profi .8cc tuned pipe and sportwerks header. The full wave resonator
pipe will held the maximum possible boost over a typical 1/4 wave car pipe.
Hardware is from Joyway their strut is the smallest aluminum one out there
comes from their Offshore Warrior and the 1/8th in flex drive line kit.
6.9oz as shown 160w of power good for 40k unloaded with the right prop.
With modified props
1.6x24mm at 40k / 61 mph
1.9x22mm at 40K / 72 mph
Recap I have verified one of my 3 Picco's power out thus far:
You can get these and the 1/2A tuned pipes online ebay while they last.
Speeddomingo sells the pipes he gets a batch in they dont last..
Send him a message get on the list..
http://www.ebay.com/usr/speeddomingoe?_trksid=p2047675.l2559
http://www.ebay.com/itm/322184307928?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/Vintage-Picc...id%3D100275%26
The micro strut rudder set for 1/8th flex drive on order I want the rudder
it's small but not the strut bit big ok for .12 size boats but no good for 1/2A
http://www.ebay.com/itm/282055779355?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Strut difference is in scale 29mm vs 44 mm.
Renderings:
Perhaps a cowl to hide the pull start and reduce drag from the fins.
https://www.youtube.com/watch?v=DtOt_BrMzoY Published on Aug 6, 2016
Picco P-0 .0519 Cu. In. /.85cc APC 4.2x4 / 28,585 Static
11.9 oz thrust .209 hp / 156w / 108.2 mph / 160 deg timing / 9in MRP
20% oil / 30% nitro / room temp 70F.
I tapped the coupler to 4mm and the flywheel but really don't need the wheel
if I am going with pull start. I will reduce the handle size and tuck it in the rigger
when running. I used a prop drive collet and thrust plate so all prop thrust is
put on the bearing and not the engine parts from Mecoa, they carry the back
plate conversion too should I with to deal with belt starting. The grub screws
are robust 4mm cudo's to Joyway in those regards, 2 lock down the flex drive
very well. The other two for the motor side is a bit redundant as I get a solid
connection to the engines crank with plenty of threads. Really nice 1/2A set up
with the Profi .8cc tuned pipe and sportwerks header. The full wave resonator
pipe will held the maximum possible boost over a typical 1/4 wave car pipe.
Hardware is from Joyway their strut is the smallest aluminum one out there
comes from their Offshore Warrior and the 1/8th in flex drive line kit.
6.9oz as shown 160w of power good for 40k unloaded with the right prop.
With modified props
1.6x24mm at 40k / 61 mph
1.9x22mm at 40K / 72 mph
Recap I have verified one of my 3 Picco's power out thus far:
You can get these and the 1/2A tuned pipes online ebay while they last.
Speeddomingo sells the pipes he gets a batch in they dont last..
Send him a message get on the list..
http://www.ebay.com/usr/speeddomingoe?_trksid=p2047675.l2559
http://www.ebay.com/itm/322184307928?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/Vintage-Picc...id%3D100275%26
The micro strut rudder set for 1/8th flex drive on order I want the rudder
it's small but not the strut bit big ok for .12 size boats but no good for 1/2A
http://www.ebay.com/itm/282055779355?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Strut difference is in scale 29mm vs 44 mm.
Renderings:
Perhaps a cowl to hide the pull start and reduce drag from the fins.
https://www.youtube.com/watch?v=DtOt_BrMzoY Published on Aug 6, 2016
Picco P-0 .0519 Cu. In. /.85cc APC 4.2x4 / 28,585 Static
11.9 oz thrust .209 hp / 156w / 108.2 mph / 160 deg timing / 9in MRP
20% oil / 30% nitro / room temp 70F.
Last edited by Pond Skipper; 09-10-2016 at 06:28 AM.
09-12-2016, 01:03 PM
#446
You're going to find out that you won't need those cooling coils. You can even chop off some of those heat sinks. The cool air off the water and the engine being exposed keeps it very cool.
I've been messing with .12's for a lot of years and never needed much. The RC cars and trucks need them because the motors are under a Lexan body.
I've been messing with .12's for a lot of years and never needed much. The RC cars and trucks need them because the motors are under a Lexan body.
09-12-2016, 08:57 PM
#447
Thank you Ron,
Progress 25.5" from sponson tip to transom 17" x 6mm carbon tube
Adjustable sponsons via rubber tubing for keepers.
Secondary brace for side loads in turns. Strong light set up for a ply rigger.
Would be nice to do one up in carbon plate.
100cc / 3.4oz tank made from a nylon snap box sealed with special sauce.
Progress 25.5" from sponson tip to transom 17" x 6mm carbon tube
Adjustable sponsons via rubber tubing for keepers.
Secondary brace for side loads in turns. Strong light set up for a ply rigger.
Would be nice to do one up in carbon plate.
100cc / 3.4oz tank made from a nylon snap box sealed with special sauce.
Last edited by Pond Skipper; 09-13-2016 at 11:56 PM.
09-18-2016, 07:26 PM
#450
180g empty weight all ply and spruce stringers.
Tuff enough to handle .05 to .12 size engines.
Tub: 20.5in x 2.5in
Sponson width: 16.5in
Primary Ride pads .98in
Tuff enough to handle .05 to .12 size engines.
Tub: 20.5in x 2.5in
Sponson width: 16.5in
Primary Ride pads .98in
Last edited by Pond Skipper; 09-19-2016 at 06:50 AM.