Twin out-board cat discussion

[F1 madness]

just got back from picking up some more materials to start the build,so gotta carry on drawing out the bulkheads etc and start cutting them all out.
Im really looking forward to this 1

[timjz]

Awsome guy's. Looking forward to more pictures of dual outboard cats. Here's mine for some inspiration. Ran it this past weekend. I have a lot of work to do. All it did was porpuse. Could not get it on plane. When I hit the throttle it wanted to flip sideways. Probably will have to convert to counter rotation. I think too I had it way over propped.

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That looks really cool, how long is that hull? How do you like the geared lowers? Any inside shots?

[F1 madness]

Definately make the drives counter rotating. If not, It will torque over to the starboard side extremely bad.

yeah they will be counter rotating,will try it bothways to see which is best and more stable.
Going to pick up some boards on tuesday so i can start the build,should be a fun 1 thats for sure

[Rumdog]

Definately make the drives counter rotating. If not, It will torque over to the starboard side extremely bad.

[Eodman]

do a search for eodman oanmd then jolly magic part! yes it is the extension!

[F1 madness]

Well hopefully,i may have some new outboard legs to try,completely new not even on the market,but if all goes well they maybe,they should be more suitable for big power brushless motors 3/16 flexi and stubshaft,and be able to run upto 60mm props with cavitation plate tith water pick up,they have 12* angle change and 12mm height adjustment,will accept any motor with hole spacing up to 30mm.once i have 1 will post some pics,these will hopefully be available in cast alloy,or carbon poly.
Will keep you posted

[ozzie-crawl]

think he means the tunnel extension

[DPeterson]

F1 Madness

Man thats cool,what outboards you using on that they look ace.

The outboards are KMB gear drives. Went with these cause I had them and I was looking for extreme scale.

Darin

Might need to play with the outboard height. I'd keep the neutral, but adjust the prop depth and see if lowering it helps.

How does it balance out, by the way? Got any shots of the inside?

I built it without the adjustable plates as I only had one of them. Critical mistake I think. CG is close to 30%.

Eodam

Is that a toysport jolly if it is did it come with the extra part in the tunnel? Mr Toth came up with the part to help with the porpoising!

Yes the Toysport Jollycat. Never seen a better quality built hull. What is this extra part you speak of? Thanks for advice on the auquacraft site.

I am going to focus first on getting one the outboards set up for counter rotation. Then see what happens. Will probably order another jack plate.

Doug

[F1 madness]

LOL do you reckon a pair of these would work:

Just kidding

[F1 madness]

Heres a quick drawing of the outline of the hull,side on view,all i got to do now is draw up the all the parts then get some board and start transfering it to that.

[F1 madness]

I wanted to use these legs (bullet drive),but was having difficulty finding dimentions needed,so settled for the OS leg.

[Eodman]

I'm using the Hi-Performance 3.5 lower leg kit that Steven sells here on his site and I picked up a couple of 1700 kv brushless out runners from South River RC to try. These motors are the red ones on his site and if I remember right were $39 bucks a piece! So if it doesn't work I'm not out alot of money!

[Eodman]

If you go on Aqua Crafts site and look at their EP1 outboard - they have a pdf of the owners manual and in it - it shows a good starting spot for placement of the outboard on a transom!

[Eodman]

Yup raise the height on the transom not the angle or tilt from the transom! Is that a toysport jolly if it is did it come with the extra part in the tunnel? Mr Toth came up with the part to help with the porpoising!

[Darin Jordan]

Awsome guy's. Looking forward to more pictures of dual outboard cats. Here's mine for some inspiration. Ran it this past weekend. I have a lot of work to do. All it did was porpuse. Could not get it on plane. When I hit the throttle it wanted to flip sideways. Probably will have to convert to counter rotation. I think too I had it way over propped.

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Doug,

On an OPC, when you raise up the outboards, it actually causes the nose of the boat to raise up (loosens up the front of the boat).

Might need to play with the outboard height. I'd keep the neutral, but adjust the prop depth and see if lowering it helps.

How does it balance out, by the way? Got any shots of the inside?