Re: CAT330D-L full hydraulic
 

Nice work mate

Re: CAT330D-L full hydraulic
 

Thanks everybody!;)
@SmallHaul: Yes, the patience is a "must" for this kind of works on manual machine. The hydraulic motors has needed a lot of study too. Hope with the new CNC components it works well and has a lot of torque!:)

Now some other photos of the machine.
The arm painted with epoxy primer....

http://i.imgur.com/K8p2kzB.jpg

http://i.imgur.com/mjKACFD.jpg

http://i.imgur.com/M9Uje6j.jpg

http://i.imgur.com/Bzb2YLp.jpg

http://i.imgur.com/guvRQXO.jpg

http://i.imgur.com/EcOCYaS.jpg

Is made by aluminium sheets of 3 and 1,5 millimeters brazed together, so is box-shaped.

Re: CAT330D-L full hydraulic
 

WOW this is superb! will be watching this one for sure. What scale is it in? or did I miss that bit?

Stu

Re: CAT330D-L full hydraulic
 

Wow! Beautiful machining. Hydraulic track drive motors too. Very cool. Everything looks great so far. This will be a nice build to keep an eye on.

Re: CAT330D-L full hydraulic
 

Thanks Espeefan and Stuart.:)
@Stuart: it is in 1:14,5 scale.

Here some photos of the chain rollers in stainless steel...

http://i.imgur.com/lfh3JAl.jpg

http://i.imgur.com/sArOIRW.jpg

http://i.imgur.com/ybtra7B.jpg

Re: CAT330D-L full hydraulic
 

Hi everyone, now i got the chain links just molded.
I put some of them under the model to see how is the first impression...

http://i.imgur.com/zgoELY8.jpg

http://i.imgur.com/yMpXBlO.jpg

http://i.imgur.com/2xj3cPk.jpg

http://i.imgur.com/GsAKFsK.jpg

http://i.imgur.com/hcYAbkC.jpg

http://i.imgur.com/uS7YRef.jpg

http://i.imgur.com/823AbCv.jpg

http://i.imgur.com/HLCPl0q.jpg

I have to drill the holes, to turn the pins and the rollers and to assemble all the parts with e-clips. Another patience work....

Re: CAT330D-L full hydraulic
 

Exceptional workmanship indeed. Keep the photos coming! :)

Re: CAT330D-L full hydraulic
 

Flawless machining and build work.

Re: CAT330D-L full hydraulic
 

Wow, amazing work. Congrats!

Re: CAT330D-L full hydraulic
 

wow that thing is crazy!!!! great work

Re: CAT330D-L full hydraulic
 

Awesome job. Keep up the amazing work.

Re: CAT330D-L full hydraulic
 

Thanks a lot to everybody, i'm happy that you enjoy the model.

In the next photos the chain completed, only one side.

http://i.imgur.com/pFPERPL.jpg

http://i.imgur.com/iDydLSq.jpg

http://i.imgur.com/Cbv5edb.jpg

http://i.imgur.com/cFlZSIS.jpg

http://i.imgur.com/kQBXV6Z.jpg

http://i.imgur.com/n78v36K.jpg

http://i.imgur.com/BFqPnfp.jpg

See you soon...

Re: CAT330D-L full hydraulic
 

Wow! Nice tracks!

Re: CAT330D-L full hydraulic
 

This is looking so great! Did you cast the track pads yourself or????

Reg

Re: CAT330D-L full hydraulic
 

Hello everyone,

@ Rcp57: I have designed the scaled model of the pads on 3D CAD, built the model piece on my milling machine and find a factory that made the copy of the model by molding.

@Thuangs: The real machine has the options between 700mm, 800mm, and 850mm. This is the 800mm and in 1:14,5 scale is around 54,5mm (half millimeters lost due to the molding retirement). The inside Groove of the links is made for a wheel of 6mm and so is 6,5mm. Pins diameter is 3mm.

My greets,

Enrico

Re: CAT330D-L full hydraulic
 

Hi Erik,
Really nice work, I like the precision of your CNC parts. The hydraulics looking good as well. Do you have a drawing/sketch of the hydraulic motor?

Re: CAT330D-L full hydraulic
 

Thanks Ramon, but nothing that you have seen in the photos is made by CNC. Is made by manual lathe and mill. The part made by CNC is only the coupling of rotor/stator that i am waiting for complete and test the hydraulic motor. This coupling has a complex profile that can not be built by manual mill and the profile i have used for the first construction, only to test the overall working, is approximated and manual milled.
The motor is of the orbital type, has a 7.8 cubic centimeters of displacement, the distributor valve is of the disk type and the motor has no drain.
For now i still have to definitive test it and prefer to not publicize the particulated drawings, i'm sorry.

Re: CAT330D-L full hydraulic
 

Very clean build, if I were you I would make holes in the track pads where the dirt can escape from the idler and sprocket, if dirt packs up it can make the tracks skip or slip off, just a heads up! :)

Re: CAT330D-L full hydraulic
 

Thanks for your intervention Azonic, in effect the problem that you analize is well known. The reason for the decision to don't make that holes is mainly structural: the shoes are made to be as strong as possible and the holes in that position makes the middle section a little too thin. This is the same reason why i have choosen to don't make the holes that pass through the flank of the chain. Instead i have changed a little the design of the chain links in another zone to minimize the problem that you notice: if you carefully watch the point in which one shoe is coupling and slide with the following one (in the bend the chain makes around a wheel) you can see that there is an opening that (i hope) helps the dirt to not stuck in. In the past set of photos this detail is not so simply to observe but in the next you will clearly see it. Other further solution to the problem could be the lowering of the profile of the teeth on the sprocket.
Finally ther is a thing to say about this problem: the typical weight of this reproduction models is so low to amplificate a lot some limits in the functionality of the chain-shoes, so it seems to be a must to provide to a spring that makes the freewheel slides back to prevent the lock of the chain in the case a little stone is stucked in between.
I hope to have made the right choises and the chain works well, but i'll can say that only after some tests.
Any other constructive critical intervention from you and each others will be greatly appreciated.....;)

Bye!

(sorry everyone for my english, i'm not a mothertongue like you can see)

Re: CAT330D-L full hydraulic
 

100% insane build - AWESOME......

stunning

:jaw::jaw::jaw::jaw::jaw::jaw::bounce::bounce: