RC Truck and Construction  

Go Back   RC Truck and Construction > RC Truck's Ag and Industrial Equipment and Buildings > Construction Equipment

Construction Equipment If it digs, pushes, hauls dirt "off road" post it here.


Reply
 
Thread Tools Display Modes
  #101  
Old 02-05-2011, 05:38 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Thanks for comments, sorry guys, you have to wait some time before machine can run. Sometimes when looking at the model I think it looks almost done but I know there´s still some major parts to do before first test run. I have been building this for last 8 years and to be honest, speed is higher now (thanks to the forums).
Yes Steve, I have met Bob 2 times when visiting the show, would love to go back there in august, always a lot of nice machinery and of course to see the 9W in action. As said before, have some thoughts about a drag line as next model, we´ll see.

Details, details
Well, it was not planned but I like it, added some more today, especially happy with the anti-skid (?) pattern. This part was laser cut to see if it was possible to do with acceptable result. I think it did so now I have to draw all the rest of those plates. The big ones just out side enginer doors have 501 holes each!! This could never be duplicated any other way than with laser. Tried to make the protective mesh below this plate with piano-wire (sorry, don´t know if this is the right word) and braze the parts together but it didn´t work. Have to do them in some other softer material.

Have made all covers for lamps (total 8). Lamps will be made from plexi with 10mm LED. Should be nice to have the lamps CNC cut to original shape, have made drawing but looking for someone to mill them. Some bolts will be exchanged to right look when I get them.

Together with some of the detail parts I finaly got the servo holders. Here the plate that will hold all servos for blade and ripper/scraper control. If will be bended, pics will come when mounted.

The valves for tracks will be covered by interior in cab. Here´s first test mount.

After all servos has been test mounted I will break down model to sand blast chassis and some other parts.
I´m not happy the way the cab roof was done, the original has a slight curve between side and roof. Cab was sandblasted today to braze new corners inside cab and then I will sand down outside to get correct profile.
From now I will stop adding details, (will add a nice details tomorrow but it is not assebled yet), need to make all bigger parts finished first.

When I made the track frames I did not think twice. The tubing that will keep tracks tighten was made from normal steel. That will not work when I start running the model, there will be rust and the gaskets will be destroyed. Now I´m looking for a stainless tubing to replace the old one.
Dan
Reply With Quote
  #102  
Old 02-05-2011, 06:35 PM
pugs pugs is offline
Wannabe
 
Join Date: Sep 2010
Location: Central Wisconsin
Posts: 368
pugs is on a distinguished road
Default Re: D8R +463 in 1/5,6

Looking great!

Could you just get your steel tubes chrome plated?
__________________
Jeff
Reply With Quote
  #103  
Old 02-06-2011, 09:37 AM
Tamiya Cowboy's Avatar
Tamiya Cowboy Tamiya Cowboy is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: South Dakota
Posts: 2,981
Tamiya Cowboy has a spectacular aura aboutTamiya Cowboy has a spectacular aura aboutTamiya Cowboy has a spectacular aura about
Default Re: D8R +463 in 1/5,6

Dan your craftsmanship is outstanding all the detail is so great to see and to see the detail functional is amazing! I have said it before but you are a craftsman in every since of the word.. Cant wait to see more.
__________________
Paul W. "Tamiya Cowboy"

HI.. My name is Paul.. And.. I.. Have a Cabover Addiction.

RIP FreddyGearDrive 2-12-59/12-19-11 "LET IT EAT"
Like Us on Facebook "Corn Field Mafia"



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #104  
Old 02-06-2011, 07:48 PM
rc_farmer's Avatar
rc_farmer rc_farmer is offline
Master Builder
 
Join Date: Aug 2010
Location: Arkansas
Posts: 828
rc_farmer is on a distinguished road
Default Re: D8R +463 in 1/5,6

Dan, this is one great model. Had to catch up on all the updates. Also, the pics of the show was fantastic!
__________________
Giving up is not an option!!!

Rob
Reply With Quote
  #105  
Old 02-07-2011, 03:47 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

RC farmer,cowboy, Pugs and all other, thanks!
About the tubing, have had thoughts about crome plate it before, but couldn´t remember how I put those parts together. When you mentioned it I had to look into if it could be possible. Did take the machine apart tonight (will go sandblasting this week) and could see that there´s a possibility to break the tubing from front wheel assembly. It´s only spotwelded fron inside

Not so good weldings, this was done some years ago and among the first parts that I tried to weld, have got a bit better now. Will try drill out those 4 weld spots next weekend. Did try to find some stainless tubes with 55mm in diameter but this is not available.

This is what the frame looks like when everything is taken away (oops, need to klean those work benches )

Dan
Reply With Quote
  #106  
Old 02-07-2011, 08:51 PM
doodlebug's Avatar
doodlebug doodlebug is offline
Big Dawg On The Bone
 
Join Date: Dec 2010
Location: South 40 Swamp, Utah
Posts: 2,398
doodlebug is on a distinguished road
Default Re: D8R +463 in 1/5,6

Hey Dan, is 55 mm a common size from supplier's? Have you considered using chrome plated hydraulic cylinder rod? Just a thought, I don't know what's available across the "pond''. Later, Neil#2 aka doodlebug.
Reply With Quote
  #107  
Old 02-08-2011, 12:57 AM
RCLogger's Avatar
RCLogger RCLogger is offline
Journeyman
 
Join Date: Aug 2010
Location: Vancouver Island B.C. Canada
Posts: 659
RCLogger will become famous soon enough
Default Re: D8R +463 in 1/5,6

Very nice Dan
Every time I checkout this thread I can't believe this is a model. You are doing a great job.

greg
Reply With Quote
  #108  
Old 02-09-2011, 04:04 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Neil, it looks like 55mm is a very odd size (but that also the scale I´m building in). Can not use a hyd rod, need to have a tubing because there will be some springs inside to keep tracks tightened.
Greg, thanks, you are doing a very nice model to.
Did sandblast frame (made from 8mm steel plate) and some ripper parts today, and bracket to hold drawbar for scraper is done. Can´t wait to get the frame painted, it´s much more fun to work with with paint and easier to keep clean when installing hydraulics. Have had problems with paint quality (chipping), will get answer tomorrow what´s wrong. Will end up painting with 2 comp paint to get a durable surface.

The other day I talked about one small detail, had that one put together and cleaned, here it is, the oil filter (on the real one) done from 5 laser cut pieces and 8pcs 1,4mm bolts brazed.
Reply With Quote
  #109  
Old 02-09-2011, 05:03 PM
9W Monighan's Avatar
9W Monighan 9W Monighan is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Pittsburgh,PA.
Posts: 1,285
9W Monighan will become famous soon enough9W Monighan will become famous soon enough
Default Re: D8R +463 in 1/5,6

Are you using acid etch primer? That would bite into the metal. On my 1:1 equipment I have used acid etch on sheet metal parts and on the big parts I go with the yellow primer Caterpillar offers. Cat primer goes on nice and builds up well and it's cheap.
Reply With Quote
  #110  
Old 02-13-2011, 02:56 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Steve, will go with 2C paint, this is more complex to deal with, mostely because I will have to paint small batches of parts, but result should be good.

Good and bad news
The good one is that I got the tubing of front track frame, will do new tubing in 55mm in steel that will be cromed and removable.
The bad part is that the cab got destroyed today, tried to get roof straight but ended up worse than before. Will probably do a new one, this time in 1 mm steel (old one is 0,7mm), was never happy with the thin sheet on the old. 1mm will be more solid and easier to work with.
Dan
Reply With Quote
  #111  
Old 02-26-2011, 11:56 AM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Photobucket up running again so latest update.
Got servo mounted to valves with test linkage, right now trying to get them working the way the real machine do. Using the v-tail mixer/function to combine the 2 servos in command of hydraulic motor valves. The model will be able to turn on spot like the big ones (having differential steering).

Here´s the blade and ripper valves with servos, I´m planning using RC right stick for both of those functions, a seperate channel switching functions.
By the way, any suggestion if servo should be mounted with or without rubber dampners. Looks like they are flexing a little bit because of rubber.


As said before, I was very satisfied with the result of simulating the anti skid pattern by laser cutting. Here´s a paper template from computer, will get the real ones on monday

The hub sides got the small cover done


Dan
Reply With Quote
  #112  
Old 02-26-2011, 12:11 PM
tc1cat's Avatar
tc1cat tc1cat is offline
Super Moderator
 
Join Date: Aug 2010
Location: Northern Indiana
Posts: 1,318
tc1cat is on a distinguished road
Default Re: D8R +463 in 1/5,6

Only 1 word to describe this build,.................WOW!! The detailing just gets better and better.

Lynn
Reply With Quote
  #113  
Old 02-26-2011, 12:58 PM
pugs pugs is offline
Wannabe
 
Join Date: Sep 2010
Location: Central Wisconsin
Posts: 368
pugs is on a distinguished road
Default Re: D8R +463 in 1/5,6

Truly amazing build. I only hope to one day build something similar.
__________________
Jeff
Reply With Quote
  #114  
Old 02-26-2011, 02:49 PM
Heavy Metal Heavy Metal is offline
Green Horn
 
Join Date: Dec 2010
Location: Middletown, DE
Posts: 155
Heavy Metal is on a distinguished road
Default Re: D8R +463 in 1/5,6

This thing is just awesome Dan. Outstanding workmanship. Keep up the good work. Joe
Reply With Quote
  #115  
Old 02-26-2011, 08:03 PM
9W Monighan's Avatar
9W Monighan 9W Monighan is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Pittsburgh,PA.
Posts: 1,285
9W Monighan will become famous soon enough9W Monighan will become famous soon enough
Default Re: D8R +463 in 1/5,6

That diamond tread plate looks interesting.
Reply With Quote
  #116  
Old 02-26-2011, 08:16 PM
Lil Giants's Avatar
Lil Giants Lil Giants is offline
BANNED
 
Join Date: Aug 2010
Location: Saskatchewan
Posts: 4,431
Lil Giants has disabled reputation
Default Re: D8R +463 in 1/5,6

Fabulous craftsmanship Dan.

I would suggest leaving the rubber grommets in place with the servos as the gas engine may create some vibration within the model, which could cause some servo glitching. If the servos do glitch at all anyway, perhaps loosening the servo mounting bolts somewhat would help also... figuring out glitch within a model can be very time consuming & frustrating, here's hoping you have none of that.
Reply With Quote
  #117  
Old 02-26-2011, 09:39 PM
Stuff's Avatar
Stuff Stuff is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Estevan, Sk, Canada
Posts: 1,281
Stuff is on a distinguished road
Default Re: D8R +463 in 1/5,6

wow!!
__________________
Rc's are like pringles. You can't have just one!!
my YouTube is -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Subscribe!!
My Facebook -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #118  
Old 02-27-2011, 04:54 PM
Toni Toni is offline
Newbie
 
Join Date: Feb 2011
Posts: 1
Toni is on a distinguished road
Default Re: D8R +463 in 1/5,6

Nice work Dan...
You still inspires me as you did with your loder in "killarnas kallender" back in the 70`s
The servos to the valves,,how accurate does them center from end to end under load??
and how mutch resistance is the servo working against?
My home made valves is kind of sluggish, need to solve that i guess..
Reply With Quote
  #119  
Old 02-28-2011, 02:25 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Thanks for the comments, those encourange words make me try harder!

Tony, the servo-valves has not been tested yet, but Roland (builder of 988 loader) has used same series valves (german HAWE) and had no problem with normal capacity servos. The valves are balanced so servo has no more than internal friction to fight against.

Did get the anti skid plates today They turned out just as good as aspected. The big plate outside cab will be cut to fit and bended when new cab is in place. This part has 501 holes, incl some 1,6mm mounting holes for round head Torx screws.


Did the safety railings on cab from 5mm copper tubing, they will be brazed to the new cab.

When trying bend multiparts to same dimension I figured out using one of my old wises, drilled and taped for some screws. Then it´s to get right distance with moving part of wise, and you can do multiples!


Did found a piece 55mm tubing to track frame finaly too, so I´m very satisfied today.
Dan
Reply With Quote
  #120  
Old 02-28-2011, 04:30 PM
kerst's Avatar
kerst kerst is offline
Apprentice
 
Join Date: Oct 2010
Location: NY
Posts: 471
kerst is on a distinguished road
Default Re: D8R +463 in 1/5,6

very nice!

Kerst
Reply With Quote
Reply

Tags
1/5.6, big scale, cat, d8r, dozer


Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:04 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.