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[Champdriver]

Hi All


I’ve been poking about high and low on this site and on the internet for a working crane that I could add to my next build which is the Fairmount Alpine from billing’s. I have not really found anything out there however I did come across this you tube video of a Happy Hunter with a working crane it’s 10 years old.


https://youtu.be/ffsQ-FvNFDY


Looks like he has modified the Robbe crane to accomplish this feat, would anyone know in detail how this was done or know of an after market kit that would work for this sort of thing. I get the feeling everyone wants one of these but no one really knows how to go about building it. I think if someone could develop a kit they would probably make a few bucks from sods like me.


Cheers


Michael

[nemesis]

Hi, I think "Marks Model Boat Bits" has one in his catalogue, nemesis

[Champdriver]

Thanks Nemesis I had look  at it and not quit what I’m looking for, it is static as well.


Michael

[J.beazley]

Expensive for what it is but have a look at Hitec's range of Linear servo's, if your happy to modify a static kit they work rather well.
If you have a fancy radio set you can trim the speed down making the smaller cheapest servo unit more scale 



Jay

[John W E]

Hi there


Somewhere on this Forum, someone did convert/make a working crane for an offshore model, out of the parts that were supplied with a kit.  I am sorry, but, offhand I cannot recall which one it was.   


However, I have built a working crane for one of my models.   I used two mini servos which were converted to run at 360 degrees.   These I use to operate the jib up and down and also the lifting of the hook.   The slewing for turning the crane left and right servo, is a modified 180 degrees servo which drives through a reduction gearbox.   If you sit down and think about it, it is fairly easy how it all works.   The most difficult part is actually operating it on the lake    .     I use an 8 channel transmitter for my particular model 3 channels which are dedicated to the crane operation.   If you forget and switch one on whilst you are steering/actually doing something else - it doesn't half get you in a tiz woz.   


Couple of pics follow ;  just to give an idea.

[Champdriver]

Very nice!


A bit big for what I am looking for but as you said it gives me idea's.
I find it funny that as model builders we have many things that have become common place like working winches, smoke systems, anchors and sound systems that are all redly available commercially yet not cranes. I think if someone could come up with a design that works they could make some serious money. I'll keep looking and picking peoples brains for idea's and solutions :)


Michael

[John W E]

hi there


I have been trying to find the topics relating to 'making cranes work' and I came across this one.   It is worth a read from start to finish of the build and it is from a friend who is no longer with us Tugboat Ken.    He had a unique way of solving problems and was the type of person who used to be able to think right out of the box and he would come up with solutions that you wouldn't think of.


Anyway, go through of some of his build and you will find how he made another crane I believe.


SEABEX ONE scratch build (modelboatmayhem.co.uk)


John

[Champdriver]

Thanks John that's quite the build I think Ken was an old school creative guru from the looks of things. Amazing the things you can come up with when you put your mind to it.


Michael

[Circlip]

" I think if someone could come up with a design that works they could make some serious money"
 
Despite the use of CNC one American manufacturer of model marine Steam engines found it uneconomical to continue production. 'Where can I buy' is successfully destroying ingenuity and grey matter.
  Supply and DEMAND seem to be forgotten factors. Tooling costs verses sales.

  Regards  Ian.

[cos918]

Hi All


I’ve been poking about high and low on this site and on the internet for a working crane that I could add to my next build which is the Fairmount Alpine from billing’s. I have not really found anything out there however I did come across this you tube video of a Happy Hunter with a working crane it’s 10 years old.


https://youtu.be/ffsQ-FvNFDY


Looks like he has modified the Robbe crane to accomplish this feat, would anyone know in detail how this was done or know of an after market kit that would work for this sort of thing. I get the feeling everyone wants one of these but no one really knows how to go about building it. I think if someone could develop a kit they would probably make a few bucks from sods like me.


Cheers


Michael

Hi Michael
given how smooth it moves and what sound like a pump. I would go with Hydraulic. You can get tones of RC hydraulic stuff for 1/14 rc truck. It is serious money.
Have a look on Ali Express. Tones of very useful stuff on there. Search geared motor ,loads apear. Aslo mirco slip ring. This will enable your crane to continus 360deg rotation.
John

[Champdriver]

Hi cos918, yes hydraulics would be the way to go if you are a millionaire but unfortunately I’m not, so I’m looking for the budget friendly version and I’m not sure it exists. will keep my eyes and ears open but I think it may be futile.

[Champdriver]

Hello All


I think I have solved my working crane problem and have attached a link for others if they are interested. The link below also has plans for connecting to the crane.
Most of the parts advertised in this link can be sourced on amazon for a fraction of the price.





https://www.bauer-modelle.com/epages/Bauer_Uwe46269592.sf/en_GB/?ObjectPath=/Shops/Bauer_Uwe46269592/Products/4.1217

Hope this helps.

[ddmckee54]

Over on the RC Truck and Construction website there have been several many crane builds.  The cranes are mostly cable cranes, but there have been the odd hydraulic unit or two.  The site is always a source if ideas for me.  Typically the truck mounted cranes are 1/14-ish but several of the big cranes are in the 1/24 range to make them a reasonable size when built.  You have to join the forum to be able to search the forum but it's free to join so it's not that big of a deal.