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Author Topic: Robbe u-47  (Read 9746 times)

sheerline

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Re: Robbe u-47
« Reply #35 on: April 22, 2008, 04:44:39 PM »
Hi BBD, sounds like the pot wiper arm may have tarnished slightly so perhaps your continued operations may have cleaned it a bit but you may find it does it again if the boat is layed up for a while. Suck it and see as they say!
Good luck with your project.
Chris
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bbdave

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Re: Robbe u-47
« Reply #36 on: April 28, 2008, 04:20:54 PM »
Been busy lately so not had the chance to upload the pics but she's practicaly done now only really the anttena to put on she has been in the pond and everything seems ok at the moment so i may get to the lake this week fingers crossed for the weather so heres the pictures up to today.
































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Martin (Admin)

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Re: Robbe u-47
« Reply #37 on: April 28, 2008, 04:47:21 PM »

You have been busy!  :o
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bbdave

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Re: Robbe u-47
« Reply #38 on: April 28, 2008, 05:36:28 PM »
See what happens when theres nothing on telly and bobs not around buying tea!
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bbdave

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Re: Robbe u-47
« Reply #39 on: May 14, 2008, 06:04:40 PM »
A week ago finaly went to the big lake she performed well but i'm goin to trim her lower to make sbmerged running easier i only got one pic as i was to busy playing and enjoying myself O0



 

i'll try to do more tomorrow if i'm not busy again  ::)
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Younger at 70

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Re: Robbe u-47
« Reply #40 on: May 14, 2008, 07:11:06 PM »
You had better not be too busy tommorrow it's your turn to buy the tea  :police:
                                                                         Cheers
                                                                             BobB P.S. my pics are quite good and the video

                                      Spell checked just in case the spelling Police are about
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Tom_DK

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Re: Robbe u-47
« Reply #41 on: June 11, 2008, 07:31:37 PM »
Quote from: bbdave on February 26, 2008, 07:39:41 PM
All the bits have arrived today so the build can start. after many hours of reading and looking on the web i have decided to copy a method i have seen for constructing a new tech rack whih i think will be easyier than modifying the orriginal with this in mind i have bought a bayonet ring for wtc.

Dream arts tower deck and bayonett ring.



Engel tank with proportional control. and the centre sections cut ready for the masks.



I have some 4mm acrylic to make the tech rack i am copying this chaps idea which looks straight forward enough as long as i take my time. What could possibly go wrong???? :-\


http://media.putfile.com/u47-static-conversion

The vid' is mine  :D.
Today I would do some of the work in an other way. Most of all I would choose PVC rather than acrylic. Acrylic breaks to easy.
After finished my static conversion I had to mount a LR2 Lageregler because its impossible to control the sub without. Without LR2 then boat bounces up and down when in a dive.
I decided not to use the stern serveo and rudder. Its running better without.
But very interesting to build a static diving sub. A lot more challenges as you can't always know the results from your choises.

Regards,
Tom
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silent running556

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Re: Robbe u-47
« Reply #42 on: March 18, 2011, 07:37:30 PM »
I've started on this boat too, certainly room for improvement on the instructions side of things and better pictures too.
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silent running556

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Re: Robbe u-47
« Reply #43 on: March 18, 2011, 08:21:42 PM »
What radio system do you use on your boat mate? My batteries came today and i need the radio now.
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Subculture

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Re: Robbe u-47
« Reply #44 on: March 19, 2011, 10:43:59 AM »
You want a 40mhz set with a minimum of 4-channels, but preferably 6-channels or more, this will give you the flexibility to add more functions later on.

If you intend to expand your fleet a computer TX can offer some benefit, but not as much as some would have you believe.

Manufacturers I recommend are Futaba, Hitec and Multiplex. Be wary of unbranded 'cheap as chips' sets unless they have been thoroughly tested in the field. Submarines place extra special demands on reception quality so you want the best you can get.

Dual conversion receivers appear to be worth the extra beer vouchers.
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Mankster

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Re: Robbe u-47
« Reply #45 on: March 19, 2011, 11:31:22 AM »
The 8 channel Robbe (Futaba) F14 is particularly good value for a non computer radio http://www.hobbydirekt.de/Robbe2/Robbe/Fernsteuerungen/F14-4-8-1-40MHZ-Robbe-1-F4039-F4039::80968.html
and can be expanded as needed with various switches and sliders etc...
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Davy1

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Re: Robbe u-47
« Reply #46 on: March 19, 2011, 12:47:58 PM »
Looks like very good advice, to me, in the previous 2 posts.
If you are feeling cautious buy 2 ! 
(I can't see the supply of 40MHz equipment becoming very easy in the future.)
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silent running556

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Re: Robbe u-47
« Reply #47 on: March 20, 2011, 11:35:33 PM »
Well i've ordered an F14 as advised, any idea of an ESC? as the Rokraft ones seem to be evading me.
I've got the Robbe 6v 5ah batteries for the U-47. Thanks. Ian.
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Mankster

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Re: Robbe u-47
« Reply #48 on: March 20, 2011, 11:58:58 PM »
Get this one http://microgyros.com/electronic_speed_controllers.html
I have about 4 of them now.
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Subculture

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Re: Robbe u-47
« Reply #49 on: March 21, 2011, 10:38:15 AM »
They also have a built in throttle failsafe- very handy for submarines.
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trevor v

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Re: Robbe u-47
« Reply #50 on: March 21, 2011, 08:46:55 PM »
Hi from trev. I am building a U47 it is my 1st sub but i have made r/c models before.It is a static diving fitted with a engel 852 tank.It is far from finished but i hope to take it to brookwell on sunday,







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Mankster

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Re: Robbe u-47
« Reply #51 on: March 21, 2011, 11:04:39 PM »
Looks great, and well done on fitting your first sub with a tank! These Robbe boats dive much more realistically with the extra ballast. See you at Brockwell.
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silent running556

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Re: Robbe u-47
« Reply #52 on: March 22, 2011, 12:39:26 AM »
Where did you get your wiring stuff from mate? my local shop doesn't deal with subs so wasn't any help in this dept.
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trevor v

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Re: Robbe u-47
« Reply #53 on: March 22, 2011, 07:05:33 PM »
HI silent running, i got my wire from maplins in stevanage it is 15amp power lead for car amps?. I am haveing problems with the motors (I only room for 2x5C cells plus 4C cell rx pack,I do not like bec) I have swop the motors for low drain 540 but still not happy :((



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silent running556

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Re: Robbe u-47
« Reply #54 on: March 22, 2011, 08:05:30 PM »
Aaah, have you got somewhere in mind for testing it? Fairlands Valley maybe?
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trevor v

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Re: Robbe u-47
« Reply #55 on: March 22, 2011, 08:42:15 PM »
its 1st full test willbe at brookwell.it has been tested in a very small pound eg.10x6 by 18" deep 
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Subculture

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Re: Robbe u-47
« Reply #56 on: March 22, 2011, 08:47:07 PM »
Well you couldn't get a better test tank. Bring swimming trunks and a towel, just in case!  :-))
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