3rd boat. flat deck 3-point hydro
#51
Senior Member
Join Date: Jan 2011
Location: Clive, IA
Posts: 439
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3rd boat. flat deck 3-point hydro
I would'nt put transom blocks on or in. Make motor on rails for CG purposes, you have the room. Build as normal build but put metal rails in with lockdown where CG fits the bill.. Don't worry about rudder, pond is almost dry as are alot of them. 2 x 4 wouldn't float. LOL! Farmers here are cutting corn crop down to feed the cattle, pretty sad. No need to reply as you have your building plans and you know what else is coming. We can talk later, ok.- what i mean with motor on rails is the whole works, gas tank, wood for support; rudder with dimensions you've typed. Now with your knowledge and my dumbness ,you'll come out ok!!
#52
Senior Member
Join Date: Apr 2004
Location: Eden Prairie ,
MN
Posts: 551
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3rd boat. flat deck 3-point hydro
looks good Tim - it's been a while since I have visited RC U - The re-re- rebuild looks good - I like that the sponsons and stern have a flat ride plate to ride on verses the kinda point on the last one - should be much more stable.
Took mine out last weekend for a little rip - Added a larger air rudder and tweaked my motor sideways a little - It ran pretty good - fast to the point of air induced wheelies - ran through three tanks and only had to retrieve it once.
Take it easy. boat looks good !
Dave
Took mine out last weekend for a little rip - Added a larger air rudder and tweaked my motor sideways a little - It ran pretty good - fast to the point of air induced wheelies - ran through three tanks and only had to retrieve it once.
Take it easy. boat looks good !
Dave
#53
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
ORIGINAL: Mikeup
I would'nt put transom blocks on or in. Make motor on rails for CG purposes, you have the room. Build as normal build but put metal rails in with lockdown where CG fits the bill.. Don't worry about rudder, pond is almost dry as are alot of them. 2 x 4 wouldn't float. LOL! Farmers here are cutting corn crop down to feed the cattle, pretty sad. No need to reply as you have your building plans and you know what else is coming. We can talk later, ok.- what i mean with motor on rails is the whole works, gas tank, wood for support; rudder with dimensions you've typed. Now with your knowledge and my dumbness ,you'll come out ok!!
I would'nt put transom blocks on or in. Make motor on rails for CG purposes, you have the room. Build as normal build but put metal rails in with lockdown where CG fits the bill.. Don't worry about rudder, pond is almost dry as are alot of them. 2 x 4 wouldn't float. LOL! Farmers here are cutting corn crop down to feed the cattle, pretty sad. No need to reply as you have your building plans and you know what else is coming. We can talk later, ok.- what i mean with motor on rails is the whole works, gas tank, wood for support; rudder with dimensions you've typed. Now with your knowledge and my dumbness ,you'll come out ok!!
I'm building the hull with a normal transom as I did before, using the same 3/16" plywood as the top deck is made of, and the sponsons are 1/8" maple plywood. I will add a turn fin to the port sponson, and I think the 1/8" ply should hold that okay. I'll use a little silicone sealant behind the turn fin bracket to seal it and add a little extra holding power. Beyond this, I'm not getting real crazy with beefing the hull up. I will add some small chunks of balsa in a few spots in the tub and sponsons only for skin support. I am not going to fiberglass anything on this one except the bottom of the tub as this skin will be made from solid wood in several strips laminated together.
ORIGINAL: dadkins
looks good Tim - it's been a while since I have visited RC U - The re-re- rebuild looks good - I like that the sponsons and stern have a flat ride plate to ride on verses the kinda point on the last one - should be much more stable.
Took mine out last weekend for a little rip - Added a larger air rudder and tweaked my motor sideways a little - It ran pretty good - fast to the point of air induced wheelies - ran through three tanks and only had to retrieve it once.
Take it easy. boat looks good !
Dave
looks good Tim - it's been a while since I have visited RC U - The re-re- rebuild looks good - I like that the sponsons and stern have a flat ride plate to ride on verses the kinda point on the last one - should be much more stable.
Took mine out last weekend for a little rip - Added a larger air rudder and tweaked my motor sideways a little - It ran pretty good - fast to the point of air induced wheelies - ran through three tanks and only had to retrieve it once.
Take it easy. boat looks good !
Dave
Good to hear your boat is running well. I'm hoping we can get together one more time before summer is over to do a little boating. It would be nice if I can get this boat done so I can test it out and I'll bring my minikaze rocket with me now that I've tweaked the snot out of it..
#54
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
Just a picture I took in comparing the two size-wise. Not a huge difference, but I'm hoping 2" wider and longer will do the trick.
#55
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
More progress...
Engine Stand:
Radio box and Engine stand mocked up:
I will cut slots in the aluminum brackets to allow the engine mount to move back and forth to adjust CG, but just squaring everything up and getting holes drilled. Radio box is epoxied to the hull now, just need to finish trimming the top of the radio box and get the cables routed. Moving along well..
Engine Stand:
Radio box and Engine stand mocked up:
I will cut slots in the aluminum brackets to allow the engine mount to move back and forth to adjust CG, but just squaring everything up and getting holes drilled. Radio box is epoxied to the hull now, just need to finish trimming the top of the radio box and get the cables routed. Moving along well..
#57
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
ORIGINAL: Mikeup
Smooth is the answer and very sharp!!
Smooth is the answer and very sharp!!
More pictures to come..
#58
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
Here's where the hull is at right now. The radio box needs to get glued on, and I need to glue the tub to the deck. Run the cables and glue in place, and skin bracing & skin. I think I'm going to fiberglass the inside of the tub to the deck... Got a few things to figure out yet.. should have more done by the end of the week. Hoping to have it RTR in a week for testing.
#60
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
ORIGINAL: Mikeup
What fills the sponsons- air or foam or balsa, since your going to seal the whole works?
What fills the sponsons- air or foam or balsa, since your going to seal the whole works?
#61
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
Engine stand finished..
Hull all glassed up.
She's gaining weight like a mad banshee. Hull as pictured above is 1 pound 14oz. The engine and muffler is 14oz, and the remaining hardware and electronics will add another 6-10oz.. Overshooting my weight goal by a little bit.. I'm hoping I can shave some weight somewhere..
Hull all glassed up.
She's gaining weight like a mad banshee. Hull as pictured above is 1 pound 14oz. The engine and muffler is 14oz, and the remaining hardware and electronics will add another 6-10oz.. Overshooting my weight goal by a little bit.. I'm hoping I can shave some weight somewhere..
#65
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
Thanks guys..
American Black Cherry "nose" caps glued on the sponsons and front of the radio box/center tub..
I ran into a slight adhesion problem with the 1/8" plywood I used for the sponson sides, so I had to repair that spot before I can seal the bottom with resin. In light of the possible risk of more peeling epoxy, I'm going to use 3/4oz cloth and glass the sponson bottom/sides, and for good measure, the center tub as well. The resin alone is probably enough to keep it in place, but I'm gonna make double sure. Hoping to get glass and 2 coats of resin on and cured tomorrow so there's a chance I can maybe test run it on Sunday. I have a new pond nearby that is nice and open all the way around, so I might do my test runs of this boat on that pond.
American Black Cherry "nose" caps glued on the sponsons and front of the radio box/center tub..
I ran into a slight adhesion problem with the 1/8" plywood I used for the sponson sides, so I had to repair that spot before I can seal the bottom with resin. In light of the possible risk of more peeling epoxy, I'm going to use 3/4oz cloth and glass the sponson bottom/sides, and for good measure, the center tub as well. The resin alone is probably enough to keep it in place, but I'm gonna make double sure. Hoping to get glass and 2 coats of resin on and cured tomorrow so there's a chance I can maybe test run it on Sunday. I have a new pond nearby that is nice and open all the way around, so I might do my test runs of this boat on that pond.
#66
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
The resin set up too fast to get the cloth down on the first coat, so I'll lay the cloth in on the next coat. Looks pretty sweet so far..
I'm working on the rudder for this boat, going kind of basic on this one. Will have pics of the rudder later..
I'm working on the rudder for this boat, going kind of basic on this one. Will have pics of the rudder later..
#67
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
I took part of the afternoon off from working on this thing to go run my Minikaze a little bit.. I did get a coat of resin on the top of the hull/deck. It still needs another coat of resin on top and then I'll work on assembling the rest of the boat.
The 50+ year old maple plywood has some really nice color to it.
The 50+ year old maple plywood has some really nice color to it.
#68
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
Its now RTR, but at 4lbs...[:@][:'(] But it balances perfectly, and I think it will run out okay.... hopefully..
If its not raining tomorrow morning, I'll do a maiden run. It rained all afternoon today, so no trip to the pond. I had to shift the engine forward a little more than I originally anticipated because I originally balanced it out with a 7oz fuel tank. I replaced the 7oz with a 4oz tank which should give me about 10-12 minutes of runtime at WOT.
If its not raining tomorrow morning, I'll do a maiden run. It rained all afternoon today, so no trip to the pond. I had to shift the engine forward a little more than I originally anticipated because I originally balanced it out with a 7oz fuel tank. I replaced the 7oz with a 4oz tank which should give me about 10-12 minutes of runtime at WOT.
#69
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
A few more pictures..
Engine and elephant muffler (Enya ss30 with TT .46 muffler/custom adapter)
Inside the radio box
And the rudder.. Another one of my homemade rudder assemblies, though I robbed the blade and pivot from the Minikaze for testing purposes. This blade is probably too long anyway.
Maiden video (though of crappy quality) will come soon...
Engine and elephant muffler (Enya ss30 with TT .46 muffler/custom adapter)
Inside the radio box
And the rudder.. Another one of my homemade rudder assemblies, though I robbed the blade and pivot from the Minikaze for testing purposes. This blade is probably too long anyway.
Maiden video (though of crappy quality) will come soon...
#70
Thread Starter
RE: 3rd boat. flat deck 3-point hydro
The boat is still untested... been super busy at work so no time to sneak off to the park. I got impatient and had to see if it floated. It does! Though I didnt have fuel in the tank (4oz), I doubt it will make much difference. Now to get a maiden run in the books (and a video too)....
#72
Join Date: Jan 2008
Location: Rio de Janeiro, BRAZIL
Posts: 383
Likes: 0
Received 8 Likes
on
8 Posts
RE: 3rd boat. flat deck 3-point hydro
ORIGINAL: 1QwkSport2.5r
Maiden run of my SI3 Copy. 9x7 APC prop, 5/25 fuel, and a light breeze.
http://youtu.be/159nQIeeMys
Maiden run of my SI3 Copy. 9x7 APC prop, 5/25 fuel, and a light breeze.
http://youtu.be/159nQIeeMys
You should be proud. Nice job!
which the length of it?