Vertical climbing tank/rover  
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 Airplanes >> Questions and Answers >> Vertical climbing tank/rover
Page: <<   < prev  1 [2] 3   next >   >>  

Login
Message << Older Topic   Newer Topic >>
Vertical climbing tank/rover - 6/20/2003 7:07:58 AM   
DBCherry


 

Posts: 5554
Joined: 1/25/2002
From: Hubbardston, MA, USA
Status: offline 		Stick,
No one has discussed the smaller engines since the first couple of posts. In Ralph's last post he asked, "can anyone tell me how much thrust and at what rpm my 5" x 3.5 pitch tri-prop will deliver?".
Two sentences later he requesting the weight, with fuel, of the 40 to 46 size engines we HAVE been discussing.

I read between the lines and decided I would warn him that using this prop on the larger engines would not work.

If my presumption was wrong, you have my permission to slap my wrist. If I was right, I may have saved him the cost of an engine.
Dennis-

_____________________________

He who dies with the most toys is, none the less, still dead.

(in reply to Ralph E Boy)
       Post #: 26

Vertical climbing tank/rover - 6/20/2003 5:40:22 PM   
Jemo



Posts: 1927
Joined: 12/2/2001
From: in, FL, USA
Status: offline 		A ducted fan unit is starting to look good, no open prop, etc, etc.

(in reply to Ralph E Boy)
       Post #: 27

Vertical climbing tank/rover - 6/20/2003 6:05:12 PM   
Pushrod02



Posts: 338
Joined: 12/3/2002
From: Pueblo, CO, USA
Status: offline 		Ever think of using a bow and arrow? Get yourself a bow, a fishing arrow, and an open face spool that you wrap with 100# construction string. It works great! Look here,

[URL=http://www.cabelas.com/cabelas/en/templates/home/home.jhtml?rid=5000152032502]cabelas[/URL]

They are under archery/arrows/miscellaneous

Now send me my $10.00

(in reply to Ralph E Boy)
       Post #: 28

Vertical climbing tank/rover - 6/20/2003 6:49:31 PM   
Ralph E Boy


 

Posts: 14
Joined: 6/16/2003
From: Willits Ca 95490
Status: offline 		To all concerned... ... no, I do not intend to try the 5" tri prop w/a .40 or .46 engine. If anyone has any idea where I might find a large pusher, feel free to enlighten me. And as far as pushrod's $10.00 goes, as I say/said, there are better ways than the bow & arrow. The problem w/all of them is regulating the distance of your shot. The best unit I've ever tried is called a "BIG SHOT" and is sold thru Sherrill arborist supplies. Check it out at sherrillinc.com Sorry, Rod, but you'll have to come up with a better one than that to earn your $$$$...

_____________________________

Ralph E Boy

(in reply to Ralph E Boy)
       Post #: 29

Vertical climbing tank/rover - 6/20/2003 7:52:46 PM   
ED STEFAN


 

Posts: 1262
Joined: 11/12/2002
From: BONAIRE, GA, USA
Status: offline 		"Sorry, Rod, but you'll have to come up with a better one than that to earn your $$$$..."

I don't know about everyone else, but I take EXCEPTION to the offering of money as an enticement to help someone. Everyone here is eager help anyone who asks and the advise has always been top-notch.

As far as your paltry $10 goes, I suggest you keep it! You're going to need it experimenting with a project that is bound for many failures before success. (should success ever materialize) Scrap the engine, and concentrate on an electric motor driving some type of rotating, mechanical, clinging device.

$10! UNREAL!!!!

_____________________________

ED -- AMA 20464 -- A plane is 1000+ different parts all flying in very close formation.

(in reply to Ralph E Boy)
       Post #: 30

Vertical climbing tank/rover - 6/21/2003 3:42:51 AM   
Azcat59


 

Posts: 1005
Joined: 5/30/2002
From: Phoenix, AZ, USA
Status: offline 		They train squirrels to water ski--how about a trained squirrel? Peanuts are pretty cheap!

(in reply to Ralph E Boy)
       Post #: 31

Vertical climbing tank/rover - 6/21/2003 4:29:50 AM   
Jemo



Posts: 1927
Joined: 12/2/2001
From: in, FL, USA
Status: offline 		Water skiing up a tree, has got to be difficult...........

(in reply to Ralph E Boy)
       Post #: 32

Vertical climbing tank/rover - 6/21/2003 4:53:51 AM   
Azcat59


 

Posts: 1005
Joined: 5/30/2002
From: Phoenix, AZ, USA
Status: offline 		Not as hard as driving an .049 powered tank up a tree!

(in reply to Ralph E Boy)
       Post #: 33

Vertical climbing tank/rover - 6/21/2003 5:08:35 AM   
Jemo



Posts: 1927
Joined: 12/2/2001
From: in, FL, USA
Status: offline 		I don't want to ruin Ralph E Boy's thread, so I am not going to mention, training the squirrel to drive the tank.


Sorry Ralph, I will quit now.

I did mention the ducted fan unit as opposed to an open and vulnerable propeller.
I think IF your project has any chance of working, the protected fan would be better, not to mention easier to handle without chopping up your fingers.

(in reply to Ralph E Boy)
       Post #: 34

Vertical climbing tank/rover - 6/21/2003 6:12:58 AM   
MAJSteve


 

Posts: 322
Joined: 1/26/2002
From: Baghdad, USA
Status: offline 		I can see the claw idea a lot easier. Something that would be able to handle a large bole, and then not fall off when the truck got smaller as you went up.

Wha tI can see is a four-armed beetle, the arms being on something like a revolving plate whith springs so that the arms will be short, but the spring can lengthen and thus the arm gets longer.

Something like a disk with the arm attached at the rim, and then a servo moving the bearing block so as to change the angle of attack.

THIS might work.

(in reply to Ralph E Boy)
       Post #: 35

Ralph, try this,,, - 6/22/2003 9:39:42 PM   
murphy


 

Posts: 40
Joined: 12/26/2001
From: Eynon, PA, USA
Status: offline 		OK, so I posted this under the wrong thread earlier,,,,,,,,,,,,,:-)


Ralph,
Being in the construction/remodeling business for longer than I care to remember, we use a trick to run wires over suspended ceilings that you may want to try (assuming your only end goal here is to get your guy rope over a lofty branch)

What I have is a old Zebco spin-cast fishing reel, (the kind with the button you hold with your thumb to release the line as you cast), mounted onto a "Y" shaped piece of wood, just like a sling-shot. A leather patch about 2"x2" is secured to the tops of the "Y" with surical tubing, again like a sling-shot.

We tie a steel nut, like maybe a 3/8 or 1/2" on to the fishing line coming out of the Zebco, then just hold your thumb on the button, pull back on the nut that is cradled in the leather pouch,,, and let 'er rip!!!!

You'd be amazed at how accurate you can get with just a little practice, and as for distance,,,, pull harder on the tubing>>>go farther!!!

Just lop the nut over your intended branch, tie on your leader rope,,,, and reel the nut in!!!

I ain't no physicist either, but, I like simple things,,,,,,,,ask my wife,,,,

John
aka "Murphy"


_____________________________

Nothing is as easy as it looks,
Everything takes longer that you think it will, and

(in reply to Ralph E Boy)
       Post #: 36

Vertical climbing tank/rover - 6/22/2003 10:25:36 PM   
Ralph E Boy


 

Posts: 14
Joined: 6/16/2003
From: Willits Ca 95490
Status: offline 		John... ... Thanx for your serious reply. As I said in one of my earlier posts, Sherrill Arborist Supply makes a slingshot designed specifically for this application (the BIG SHOT). I had one up until 6/20/02 (yes, my aniversary just passed) when my shop burned to the ground & lost everything. Anyhow, tho rather costly at $270.00, in certain trees it works primo. Other trees that are grossly congested, not so primo. Before I invest in another one, I thought I'd research the remote possibility of "driving" my fine line to it's destination. While everyone seems to be scoffing at the notion, I believe it can be done, especially if I can acquire the coaxial tranny & motor out of the airscoot (go to airscooter.com for more info). Bottom line... to all the naysayers... if by chance I ever get this thing to work, rest assured I will be shoving this in your faces as well as other areas of your anatomies... yukyuk... Cordially, Ralph E Boy

_____________________________

Ralph E Boy

(in reply to Ralph E Boy)
       Post #: 37

Vertical climbing tank/rover - 6/23/2003 12:36:19 AM   
Jemo



Posts: 1927
Joined: 12/2/2001
From: in, FL, USA
Status: offline 		Ralph E Boy,

I am not scoffing at your endeavor.
Yes I made a few jokes, but I am quite serious about a ducted fan rather than an open propeller. It would be protected, this is if you are still going to try to provide downward thrust to hold the device to the tree.

Dubro, made a coaxial model helicopter in the 70"s. They are collectors items now, but someone may want to get rid of one.
They didn't fly worth a damn, but the mechanism would be there.

Personally, I would love to see something like this work.

Bumble bees are not supposed to fly, but they do..........

(in reply to Ralph E Boy)
       Post #: 38

Vertical climbing tank/rover - 6/23/2003 4:52:56 AM   
Spaceclam



Posts: 4640
Joined: 4/13/2003
From: chatsworth, CA, USA
Status: offline 		Train a monkey to do it. That is probably one of the most "crazy" ideas. No engine you can buy will give it enough thrust to even overcome it's own weight, much less the fuel and the vehicle. I suggest if you still are into the tank idea, get two, put one on either side of the tree, tighten a rope around the two, and synchronize the two. i still think the monkey would do better though.

_____________________________

Duct tape is like the force. It has a light side, a Dark side, and it holds the universe together.

(in reply to Ralph E Boy)
       Post #: 39

Vertical climbing tank/rover - 6/23/2003 8:53:00 AM   
Ralph E Boy


 

Posts: 14
Joined: 6/16/2003
From: Willits Ca 95490
Status: offline 		Spaceclam... ...hmmm???... the dual tank idea (strapping the two together etc.) is at least par with training a monkey etc.. And I was told RCUF sustained intelligent life. Tho I may not be a top-notch physicist, please explain to me how if..."no engine you can buy will give it enough thrust to even overcome it's own weight, much less the fuel & vehicle"... then how does a helicopter overcome Newton's law? Excuse my ignorance, but does the airframe, props, etc on a helicopter (everything minus engine & fuel/batteries) weigh more than .37 lbs? I would think so, but then again I do NOT know everything. I'd love to forget I even started this thread, but to those who suggest, uh, rather "unlikely" (for lack of a better word) concepts, I simply can't help myself. I sincerely appologize to those who are more realistic, even if doubtful regarding my endeavor. Cordially, Ralph Ivey

_____________________________

Ralph E Boy

(in reply to Ralph E Boy)
       Post #: 40

Vertical climbing tank/rover - 6/23/2003 7:46:17 PM   
Spaceclam