tjmackey

This is my latest weedy, any ideas tips as for the rudder setup, was going to go for twins but decided there is no need, has anyone got ideas on which is better?

tjmackey

[img][/img]

tjmackey

any ideas on prop size? i have a p 265 at the moment to test but does anyone have an idea of a better suited prop?

martno1fan

what size motor is it?,i have a weedy in my woody its 28 cc i run the prather 280 prop and a walbro wa 167 carb,this carb gives a good boost of power to the motor.You can pick up ali props now that work well if you cant get a prather 280,also try the 275 prop.As for the rudder stick to one offset rudder,less drag and your boat wont be that fast to begin with so no point slowing it down even more.heres my woody setup.if you check my utube page theres some videos of it running.
mart

dwr9

A single rudder will work just fine. You could try an Octura X470/3 or X482 prop. Doug

tjmackey

The engine is a 25cc talon, i have used the same engine in a large scale heli, and with an 11mm walbro it seems to have some poke, im not after a raceboat its just for fun otherwise i would have bought a zen LOL. I am hoping there will be a little exitment though,hopefully it will[img][/img] at least get up on the plane

tjmackey

The transom seems so dangerous, I already cut through my jeans and sliced my leg on the turn fins just by walking past, and now im supposed to sharpen the prop, is there any part thats no dangerous? are the turn fins/prop/rudder supposed to be this sharp? or have i taken things to the extream?

martno1fan

They do need to be reasonably sharp but maybe not so sharp as to be like a razor ,yes these things are very dangerous especially when the prop is spinning so keep well clear at all times and keep your pets and kids away too .

dwr9

Safety first at all times. The best idea is to build a stand for the boat that has a built in prop shield. Doug

tjmackey

Thanks Mart, i might just take the edge of the turn fins, i may have made them a little to sharp and Doug, ill definately be making a boat stand with a prop shield, good info thanks guys[8D]. Im building the radiobox at the moment, i bought a box from jacar to try, what psi would you recommend it being capable of? i have w/p boots for the controll rods. Heres some pics of the box[img][/img]

tjmackey

Well. i started on the radio box, but mistakes were made[:@] Hopefully it wont be a problem to fix, only have to block a hole. I test floated the hull today, and is looking good i have it balanced at 30% and there is not much hull in the water at all, the transom from the keel up is in about 2" and the rest is all looking good, sits in the water real nice. Im hoping to get her wet soon just have to add floatation. Does anyone have ideas on trims, should i build a set now or wait to see what happens? I know they can help to trim torqe and can lift the transom, but are they needed an all cases?

dwr9

How the boat sits in the water when it's not moving doesn't really mean anything. You won't know if the balance is right til you run it. Doug

tjmackey

Yea thats right, I was however exited as the vessel was sitting as i had wished which brought hope, being as it is the first of these iv'e built (berore i had only built small electric boats, scale mainly, apart from scale helis,cars, fixedwing and the rest). I was hoping maybe you guys, having more experence with these gas powered machines could help me out with the setups and what tecniques you are employing to hopfully have a succesfull machine

martno1fan

dont worry so much about it mate 30% sounds fine to me ,did you offset the drive line to the right a bit? if so that will overcome prop walk and torque roll .you dont have to have trim tabs either,run it and see how she runs first.

tjmackey

Yes, i did offset the drive line from the keel about 4mm to the right, But i still have the challenge of sharpening the prop, that will be fun

speed-king

im starting to build a weedy boat, what length are your boats? how r your boats set up as far as engine placement? speed? this is my first buld so i have alot of learning to do.
thanks

s2sinner

Nice hardware

martno1fan

HI mate you balance the boat once you have all the hardware mounted then put everything in the hull roughly where it will go such as fuel tank radio box and gear.then put a broom under the boat and move the motor arround till it balances at about 30% from the transom then mark where it needs to be .

martno1fan

Thanks one day ill get round to pollishing it .
Mart

motrcyclryan

just have to say.... thats the most high tech boat stand i've seen...lol. good thinkin

martno1fan

LOL i didnt even notice what the boat was sat on ,just dont get it wet [X(].
Mart

STEVE MARSHALL

What part of OZ are you from?? I am in Perth. The boat looks good, get it wet so we can see how it goes.
Steve

tjmackey

Im in queensland, im hopeing to get it wet soon, just have to mount the radio box and it's all done the boat stand came free with a deep frier and works great, maybe ill come up with a safer and more perminant stand, although i have to balance and sharpen the prop, any pointers?

tjmackey

Finally, the radio box is finished, had a few holdups but shouldn't be too long before i can get it wet

jdoug

hey tjmackey - I have very similar looking turn fins on my boat and have scratched myself and ripped shirts walking by as well. What I did, is leave the leading edge alone and take off the point at the bottom of the fin. Grind it flat and you will be a lot better off. I saw no difference in mine after taking off about 1/4" off the bottom of the turn fin.