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Construction Equipment If it digs, pushes, hauls dirt "off road" post it here. |
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#21
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Re: Newbie Scratch Build - D575A Dozer
Excellent progress is being made, & it looks great, ESPECIALLY for a first build!
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#22
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Re: Newbie Scratch Build - D575A Dozer
Premacon sells a hydraulic pump & valve block that many ppl have bought before. https://shop.premacon.com/index.php?cPath=35 The pump/motor originates from this guy https://www.modellhydraulik.com/ though I'm not sure if the rotatory valves are exclusive from Premacon or not.
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Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get! Joe |
#23
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Re: Newbie Scratch Build - D575A Dozer
Wow! Excellent work - details of tracks are really great, so I'm sure the rest of the machine will be exceptional.
Ken
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Big iron is awesome! |
#24
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Re: Newbie Scratch Build - D575A Dozer
Quote:
Thanks for a the kind comments so far Rob |
#25
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Re: Newbie Scratch Build - D575A Dozer
Looks like your track pads are on the right track In post #19, I was looking at the angle of the bends and the grouser bar fit thinking that'll bind up as soon as they get some dirt/rocks/sand in them but I see you've made some adjustments and they look real good now.
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#26
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Re: Newbie Scratch Build - D575A Dozer
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#27
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Re: Newbie Scratch Build - D575A Dozer
Great looking track parts, very well done!
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#28
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Re: Newbie Scratch Build - D575A Dozer
thanks Chris 👍🏻
It’s slowly getting into a functioning shape but I need to start focusing on finishing off everything and then start adding all the details that I want. I can see why some of these models take hundreds if not thousands of hours to complete. I guess when it finally moves a bit of dirt around it makes it all the more worth it ! Oh and the steel splinters 🤦🏼♂️ Rob |
#29
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Re: Newbie Scratch Build - D575A Dozer
Hi All
Hope everyone is safe and well ! Its been a wee while since I last posted any updates but I have been busy honing my skills and completing parts that just take ages (undercarriage). I have nearly completed one side and making fast progress on the other now that I know how it all works ! enjoy the update pics: |
#30
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Re: Newbie Scratch Build - D575A Dozer
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#31
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Re: Newbie Scratch Build - D575A Dozer
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#32
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Re: Newbie Scratch Build - D575A Dozer
Beautiful work!
Kerst |
#33
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Re: Newbie Scratch Build - D575A Dozer
This is pretty awesome (and I can appreciate the hours spent before each picture could be taken).
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Emil G | MFZ Blocher Fendt 926 | RC4WD Volvo EC480 excavator | Carson LR 634 | Kenworth 6x6 hauler | Kenworth 6x6 dtrk My channel: To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Construction site on Facebook: To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Pictures on Instagram: To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. |
#34
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Re: Newbie Scratch Build - D575A Dozer
Excellent work !
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#35
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Re: Newbie Scratch Build - D575A Dozer
The more photos the better! I also enjoy text. I love reading about how people make their own models and how they get around/solve problems along the way.
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Youtube username iamaman27 |
#36
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Re: Newbie Scratch Build - D575A Dozer
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Today I was adding in some details to the drive sprockets and fixing details: The drive and transmission has been the most time sapping process to date. as I am not of a engineering background this has taken maybe far longer than it should have. Although there are a few very amazing scratch builds on this forum there wasn't enough details to help me make a knowledgeable decision in my build. So this is what I have gone with : 24v motors https://gimsonrobotics.co.uk/categor...d-24v-versions 1:2 reduction bevel gears to make right angle transition Linear and thrust bearing on the internal shaft + locking nut Tapered roller bearing in the hub/sprocket to sort out both axial and radial loads? I will post some pics of the setup this week to illustrate more details to follow |
#37
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Re: Newbie Scratch Build - D575A Dozer
Mind dump incoming !
from my limited experience these are the following things I have learned that have made the most difference: Get a DRO ! - its all about making parts that are repeatable ! this makes it so much easier ( CNC is the next step maybe one day) Get quality tools if you can - you have probably heard this so many times before and I can attest buying a £20 M2 tap is far better than one that costs £2 ( trust me the cheap one will break on the first few holes whereas the other will just carry on for hundreds) Be methodical - making repeatable parts means cleaning between parts , resetting dials, taking your time. don't take short cuts. Design before any fabrication - as I am going along I actually wish I would have drawn everything up in Fusion 360 before I started. you can waste so much time re-centring / setting up parts that could be done in one . Vinegar cleans all the mill scale and heat (soldering) blackening off metal you could ever need ! ( Bio Carb soda stops the process). I wish I knew tis from the first day. clean stock metal is very helpful when making repeatable parts. I am still figuring out the rest ! Rob |
#38
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Re: Newbie Scratch Build - D575A Dozer
As someone who has never tried to build anything like what is found on these forums I find myself coming back everyday for updates and to admire the talent and ingenuity (and zero drama). Thank-you for sharing.
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#39
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Re: Newbie Scratch Build - D575A Dozer
Very nice work, looks beautiful!
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#40
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Re: Newbie Scratch Build - D575A Dozer
Hi Everyone
its been ages since i have updated my progress on the dozer but its been a crazy year and progress has been patchy. This is basically where i have got to since the summer: Almost ready for a test run in the dirt ! Cant wait to see it actually move by itself ! ( blade and ripper still in progress) The main time consuming work were making the second track and all the under carriage elements. Not really worth posting as its just a replica of what i had already made and extremely boring ! What can be seen in the image above at the moment weighs in at 40 kg (88lbs) and with the ripper and blade/hydro pump etc should be about 50 - 55 kg in total. I may try and see if i can rig up a makeshift blade to see how the traction works. So going back to where i left off, i had some issues with making a right angle gearbox and initially when with this: The gear box, axle and drive train have taken a lot of working out and time as i could not really tell if i was on the right track ( not from an engineering background) and i was worried ( still am a little bit ) that the whole things might chew it self apart. after several trials with f |
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