Rescue boats  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> RC Boats >> RC Boats General Discussion >> Rescue boats Page: [1] 2   next >   >>  

Login
Message << Older Topic   Newer Topic >>
Rescue boats - 8/8/2006 5:44:59 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		So I was inspired by a pic in RC Boat magazine of a rescue boat on pontoons. I went out and bought some, and used all the gear from an airplane kit for power. I brazed up a rudder system as well. Tomorrow I'll finish the body and paint it up, next day it hits the water for testing, then I need to figure out the actual retieval system.

What do you think?

Attachments
Click to see fullsize image.
Click for fullsize
       Post #: 1

RE: Rescue boats - 8/8/2006 6:13:53 AM   
NitroRunner



Posts: 513
Joined: 6/29/2005
From: London, ON, CANADA
Status: offline 		pretty cool, what kind of retrieval system are you going to use?

_____________________________

Is it..? I think its.. Oooh yea its broken...$%^&

(in reply to BlueMonster)
       Post #: 2

RE: Rescue boats - 8/8/2006 6:20:17 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		I have no idea! I was hoping others might share thier ideas.

(in reply to NitroRunner)
       Post #: 3

RE: Rescue boats - 8/8/2006 8:19:06 AM   
LtDoc


 

Posts: 1750
Joined: 11/29/2003
From: McAlester, OK, USA
Status: offline 		Looks like an interesting boat. As for a retieval boat, I think I'd try making it a 'pusher', not a 'puller'. Putting the rescued boat in the propwash would also contribute to extra 'drag', wouldn't it? Maybe not much, but some.
- 'Doc

(in reply to BlueMonster)
       Post #: 4

RE: Rescue boats - 8/8/2006 8:43:26 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		The prop on the rescue boat will be at the rear. Did you mean the rescue boat should use a pusher system, or that it should push vs. pull the dead boat? I don't know anything about setting one up, only that I should probably have one and I was able to put it together really cheap.

(in reply to LtDoc)
       Post #: 5

RE: Rescue boats - 8/8/2006 8:05:09 PM   
LtDoc


 

Posts: 1750
Joined: 11/29/2003
From: McAlester, OK, USA
Status: offline 		Sorry, should have rephrased that just a little. The 'push'/'pull' thing refers to the way the rescued boat is moved, not the way the retrieval boat is powered. The 'drag' I was refering to would be from the prop-wash of the retrieval boat blowing against the 'dead' boat. Thinking about that again, there probably wouldn't be that much drag but who want's any that you don't have to have? Putting a 'knee' on the front of each of the floats ought'a work fine. (More 'odd' terminology! If you push with it, it seems like it ought'a be called a 'foot', not a 'knee', doesn't it? Don't ask me, I don't know why, but it's a "knee".)
- 'Doc

(in reply to BlueMonster)
       Post #: 6

RE: Rescue boats - 8/8/2006 11:38:37 PM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		Okay, got it!

The motor on the rescue boat is a pusher, prop is in the rear, so the rescued boat should effect it at all. I don't quite understand the knee you refer to though, is there an example of it somewhere?

(in reply to LtDoc)
       Post #: 7

RE: Rescue boats - 8/9/2006 3:45:22 AM   
LtDoc


 

Posts: 1750
Joined: 11/29/2003
From: McAlester, OK, USA
Status: offline 		"Knee" refers to a vertical pushing surface/structure. Commonly found on 'towboats' pushing barges on rivers (several pictures of such boats can be found on this forum). 'Pusher' does not refer to the motor on the retrieval boat. It refers to how the retrieval boat moves the 'dead' boat, it pushes it instead of pulling it with a tow line. If the retrieval boat pulls the 'dead' boat, the prop wash from the retrieval boat will end up pushing the dead boat backwards to some extent. Wouldn't matter if the motor on the retrieval boat was a 'pusher', or a 'tractor' type air moving motor. Using your retrieval boat as a pushing vessel instead of a pulling vessel would mean that the prop wash would not 'blow' back onto the dead boat and contribute more drag to the whole procedure since the dead boat would be infront of your retrieval boat, not behind it where the wind from the motor is blowing.
- 'Doc

(in reply to BlueMonster)
       Post #: 8

RE: Rescue boats - 8/9/2006 3:50:57 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		Cool, I think my setup will work well then. I'll try to find some pics for ideas on the retrieval system. The boat will be done this evening, I'll post pics in a little bit...

...and don't laught, I made it ugly on purpose!

(in reply to LtDoc)
       Post #: 9

RE: Rescue boats - 8/9/2006 5:55:58 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		Okay, it's dark outside, and I just came back from the beach for it's maiden voyage. It was flawless. I think I might make a more aggressive rudder, but we'll see. It was awesome, I ran it til the battery died.

What do you think of the final version?



Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


< Message edited by BlueMonster -- 8/9/2006 6:01:54 AM >

(in reply to BlueMonster)
       Post #: 10

RE: Rescue boats - 8/9/2006 1:28:20 PM   
CadillacETC2000



Posts: 6377
Joined: 10/23/2005
From: Tottenham/Orillia, ON, CANADA
Status: offline 		heck thats pretty good !
and with more power you can just drive rite over sholes and what not

_____________________________

Pity , with all my extra cash , just waiting to line someone''s pockets.

(in reply to BlueMonster)
       Post #: 11

RE: Rescue boats - 8/9/2006 11:03:50 PM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		Yeah! The idea is to drive right over my Vee when it dies, but I might just run this by itself once in a while. It's a little slow, and steering could be a little crisper, but it is easily controllable and dependable, so it'll do it's job.

I couldn't find any pics of an actual retrieval system, so still working on that. Gonna float them both in the tub together and see if something dawns on me when I see them together.

(in reply to CadillacETC2000)
       Post #: 12

RE: Rescue boats - 8/10/2006 3:23:01 AM   
Dave trimmer


 

Posts: 495
Joined: 10/10/2005
From: Hamilton, ON, CANADA
Status: offline 		I'm an air plane guy with little boat expierience but if you put small chicken wire instead of just ply wood on the front to reduce drag, and then just push it. or put lage strong magnets in each boat and drive by, lastly tie a small rope or net between yours and a friends boat and catch it like a butterfly net, hope this helps.

_____________________________

a minute of perfection was worth the effort. A moment was the most you could ever expect from perfection. - chuck Palahniuk

(in reply to BlueMonster)
       Post #: 13

RE: Rescue boats - 8/10/2006 4:17:23 AM   
NitroRunner



Posts: 513
Joined: 6/29/2005
From: London, ON, CANADA
Status: offline 		i like the tennis ball/ float way, and the magnet way. The float idea is to have a tennis ball or other floating object on a fishing line or string attached the the back of your boat, then you circle the dead boat 3 or 4 times and start to drive away and it will attach to something. The only problem with the magent method would be if the boat was overturned, and you couldnt get to the magent.

_____________________________

Is it..? I think its.. Oooh yea its broken...$%^&

(in reply to Dave trimmer)
       Post #: 14

RE: Rescue boats - 8/10/2006 5:55:01 AM   
BlueMonster


 

Posts: 280
Joined: 3/18/2005
From: Kirkland, WA, USA
Status: offline 		I think I'll experiment with a couple things this weekend. I like the idea of circling the dead boat and catching it on something

(in reply to NitroRunner)
       Post #: 15

RE: Rescue boats - 8/10/2006 10:29:25 AM   
sean22


 

Posts: 3
Joined: 8/8/2006
From: N.S.W, AUSTRALIA
Status: offline 		i have never heard of a retreval boat before i joined this site lol .. i have been using a $70 inflatable raft 1 person with 2 oars and is a hassle to take down the river and pump up then pack it up when im leaving .I think i might try and make a retreval boat out of another cheapo ebay job and rig some kind of setup thanks for the ideas. I really like your boat perfect for the job

(in reply to BlueMonster)