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Old Dec 20, 2011, 08:29 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
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Quote:
Originally Posted by mozzyrocks View Post
I have a question about that prop, 447/3.

I'm going to be running that same motor in my Genesis & was told that the 447/3 would be too much for it.

How can you run it & have no issues? Is it the hull design?
Whats your motor in the Genesis?


I think Pyro's and Pauls boats will be very similar in performance, i think Paul may be able to spin an x447/3 with his 36" length(Pyro's is 33") due to the 1520 being a bit more powerful..........40 x 82mm for the Leopard and 40 X 88mm for the Castle in case anyone is wondering. So the extra bit of power may be able to swing the x447/3 on the larger boat without huge strain on the system..........

However!! I would start with an m445, x445 or s220..........
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Old Dec 21, 2011, 12:35 AM
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Australia, QLD, Ashgrove
Joined Nov 2009
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hey paul i have got the batter now for the boat some guy give me some on satday and they will work in the navy boat so i am all good now i will have it runing next year i hope


alex
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Old Dec 22, 2011, 02:39 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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Mozzy.
Believe it or not a cat has a lot more drag than a mono & it loads up the motor a bit more.
I wouldn't run the same size prop in a cat as I would in a mono of the same length with the same motor/ESC set up. Always a bit smaller prop.
And the Genisis is a lot bigger than the 36" mono hull that I have to start with.

Cheers.
Paul.
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Old Dec 22, 2011, 09:28 AM
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Australia, VIC, Blackburn North
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Ahhh, ok. Thanks.

I'll stick to the X440/3 then.

Motor is 4082 1600kv as it says on the tube it came in.
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Old Dec 23, 2011, 09:53 AM
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You could always have a x447/3 cut to 45mm or whatever diameter you want to try..Im thinking about trying a x450 cut to 47mm for a bit more pitch.I doubt Ill try it though..Im already hitting 57.4mph with this setup.I think I can get 60mph with a little more trimming (I dont think the hull can stand much more)..Also with my setup with the 447/3, I shortened all the wires as short as possible, used 8mm bullets on the motor wires, and use the parallel connectors I make helped tremendously with the wire temps..I was seeing motor wire temps of 160+ before the mods..Now there in the 130's..I dont like to see any temps above 140 including the wires..
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Last edited by pyroMIKE; Dec 23, 2011 at 10:02 AM.
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Old Dec 24, 2011, 03:07 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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Mozzy.
That motor will turn a bigger prop than the 440/3 in that boat. See if you can get hold of an M545. Should work a treat on that boat with that motor. But as always check temps regularly for the first few runs.
Merry Christmas.
Paul.
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Old Jan 21, 2012, 03:04 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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Ran the mono for the first time last weekend.
Quite fast with the 4082 1600kv motor & the T180 ESC.
Started with an M445 & a Prather S225 & the motor didn't even know they were there. Temps were only 34-36 C after 5 laps.
So on went the 447/3 blade. That added some good speed & the temps only hit 38-40 C after 5 laps.

Initially there were some handling problems though. Very flighty down the straights & could only hit the corners at about 2/3 speed as it had that horrible bow steering tendency & was skipping the back up out of the water.Settled the straight running down with the COG, strut & tab adjustments. But the cornering problem remained.

I figured it was because the tabs are so far out from the keel (I put them back on where they were when I bought the boat). So I'm going to put some split tabs on & move them in closer to the keel where I normally put them.

I've since read Scorps & Jarins threads on removing the ride pad & the subsequent improvement in handling. So I might need to think about that too as this hull has a huge pad on the bottom.

No video yet but here's a couple of pics at the lake.

Cheers.
Paul.
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Last edited by 785boats; Jan 23, 2012 at 12:53 PM.
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Old Jan 23, 2012, 06:45 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,168 Posts
Quote:
Originally Posted by 785boats View Post
Ran the mono for the first time last weekend.
Quite fast with the 4082 1600kv motor & the T180 ESC.
Started with an M445 & a Prather S225 & the motor didn't even know they were there. Temps were only 34-36 C after 5 laps.
So on went the 447/3 blade. That added some good speed & the temps only hit 38-40 C after 5 laps.

Initially there were some handling problems though. Very flighty down the straights & could only hit the corners at about 2/3 speed as it had that horrible bow steering tendency & was skipping the back up out of the water.Settled the straight running down with the COG, strut & tab adjustments. But the cornering problem remained.

I figured it was because the tabs are so far out from the keel (I put them back on where they were when I bought the boat). So I'm going to put some split tabs on & move them in closer to the keel where I normally put them.

I've since read Scorps & Jarins threads on removing the ride pad & the subsequent improvement in handling. So I might need to think about that too as this hull has a huge pad on the bottom.

No video yet but here's a couple of pics at the lake.

Cheers.
Paul.


Yeah, i posted a vid of my 47" running with the new Vee(no pad) and a 6" setback rudder......check it out!

Apparently ride pads are there for guys running gas that dont have as much power or speed and it helps them get up on plane quicker........and stay there easier.
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Old Jan 23, 2012, 07:33 PM
I feel the need for speed!
scorpion1's Avatar
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Here's the result of the modding Paul.................painfully slow with only a 55mm diameter............doesnt get a whole lot of bite.............but the results are great!!

47 inch mono, new rudder and Vee, Castle 2028 10s2p (1 min 23 sec)
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Old Jan 23, 2012, 11:48 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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You've gotta be happy with that man.
Sits pretty in the turns now.
Well that's it, I'm gonna get rid of the pad for sure.
When you think about it, the strut is being raised in relation to the bottom of the boat by extending the V down further.
I think I'll mould mine with Epoxy putty.
Cheers.
Paul.
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Old Jan 25, 2012, 03:37 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
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Well it's the 'Australia Day' holiday today so I should get some work done on this one.

Happy Australia Day to all the Aussies out there.

I've started by building up the ride pad with some Epoxy putty & will sand to shape when it hardens.
Here's a before & after pic showing the pad.
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Old Jan 25, 2012, 03:43 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Looks great Paul, get to it with some 150 grit and a block of wood and you'll reduce high spots as well. I went to 220 second then finished with 800 grit.
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Old Jan 25, 2012, 03:52 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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That's the plan Scorp.
Some sanding & then a strip of epoxy enamel paint down the keel.
But I always finish the bottom of my hulls with 400 to remove the gloss & leave that scuffed finish for that little extra speed.
Cheers.
Paul.
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Old Jan 27, 2012, 01:20 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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Finished off the keel & painted the bottom with some green that was lying around.
If these flooding rains let up I'll give it a test tomorrow. But the big test will be up at Lakeside Raceway on Sunday.
Cheers.
Paul.
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Old Jan 27, 2012, 07:12 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Great work Paul........................should work very well!!
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