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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Thanks again guys. Gabriele that looks really nice and I hope to make one myself soon.
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Rank: Advanced Member Groups: Member
Joined: 4/13/2011 Posts: 1,021 Location: California
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Hey guys, it's been a while and I've not been well so haven't been able to do much on the crane front. But today I decided to move forward a little more with my CC8800 project and I made some minor modifications to the model. I've started to rig the crane now and I need to modify that AWFUL boom head from Conrad which bears no resemblance to the real machine. So I got the Dremel out and took out all the extra metal, made some shims for the pulleys, and gave them proper spacing for the hook blocks. You can see how much better it aligns with the pulleys in the block now. Carmen (from Conrad) very kindly sent me 5 spare pulleys and I only needed one, so I'm using the other 4 for the boom head, an extra 2 per side. What used to be 10 pulleys bunched up together is now 12 pulleys evenly spaced out like on the real machine. One down, one to go. Stay tuned for more updates very soon.
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Rank: Advanced Member Groups: Member
Joined: 9/22/2007 Posts: 5,860 Location: Louisville
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Rank: Advanced Member Groups: Member
Joined: 5/15/2013 Posts: 222 Location: Netherlands
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Looks great Davie I must agree totally with the awful no resemblance with the real crane boom heads. I also cut out some of those thick bars... because they came in the way for rigging the hook block! I had the block completely riggend in this position, jib horizontal: only to find out after I topped the complete boom, that I had made a terrible mistake! so, boom down again... but re-rigging the block the right way would be far from easy in the horizontal position. All the rope parts behind these (blue arrow) bars? no way - so I made the drastic decision! But it's not even half of what you did Davie
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Thanks guys. Victor, you know what - I probably would have done exactly the same myself. I do intend to put these bars back on but, of course, they will be removable for reeving. I have reeved the small hook block with my 100lbs dyneema fishing line and it looks great, however the dyneema is far too strong and the force required to keep the line taut is too great. I need approx 5kg of force on the hook for it to run relatively smooth. Oh well! What I would really love to get my hands on is the stuff NZG used on their 11200... it was amazing, very soft and strong and just the perfect thickness. I suspect the LR1600-2 uses the same stuff, and my guess is it's superior even to Musky Master. Anyway, I spent a lot of time drilling and filing the brass pendants and have managed to get the model properly rigged. Here are some pics.
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Rank: Advanced Member Groups: Member
Joined: 5/15/2013 Posts: 222 Location: Netherlands
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Wonderfull ballast tray also I guess it's plastic - is it strong enough to hold all the kilos of ballast? Edit: never mind, I see you already told us so on the previous page
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Thanks again Victor - it's not finished yet but it's structurally sound and holds the load with ease. Still lots of detail to add...and then paint! And I just remembered I had a tale to tell about the strength of styrene... the equalizing bridle that I made from styrene is strong enough to withstand an incredible amount of force, my guess would be well in excess of 10kg. You can see from the picture that there are only two very small points of contact with 1mm nails and even so, when I was reeving the main hook block, I managed to pull both double knots on either side of the A-frame free because I was applying too much pulling force to the main boom. I'm actually amazed the knots went before the styrene did! Suffice to say, this time the knots are stronger and I triple knotted this time.
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Rank: Advanced Member Groups: Member
Joined: 5/15/2013 Posts: 222 Location: Netherlands
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I still have the brass equalizer that I got from Gabriele 3 years ago. Works great with the new brass pendants from YCC Davie, do you also plan to make a derrick boom extension, to turn the crane into a CC 8800-1 ?
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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The brass equalizer looks real nice. I have thought about making a derrick extension and I probably will look into it when I have some time - lattice structures are very difficult to scratch build!
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Rank: Advanced Member Groups: Member
Joined: 1/12/2003 Posts: 104 Location: scotland
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Fantastic it's looking better every time ,give me a call http://www.flickr.com/photos/10069306@N07/
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Thanks Peter. Will give you a call soon. As for progress, I did the other side of the boom head and have rigged the crane with all the main boom sections that I have. I also drilled tie-off holes into the hook block and it really makes reeving so much easier and the whole setup looks a lot more realistic now. Just to finish up for the day, I did a load test with 2kg at approx 90cm radius and things look very good. I think that the crane in this configuration would be able to hold 5kg quite easily. And here's the tray loaded with 52 weights and off the ground.
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Rank: Advanced Member Groups: Member
Joined: 1/13/2014 Posts: 158 Location: Olympia, WA
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Rank: Advanced Member Groups: Member
Joined: 9/22/2007 Posts: 5,860 Location: Louisville
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Rank: Advanced Member Groups: Member
Joined: 10/2/2007 Posts: 5,966
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Yeah im also loving the ballast tray
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Rank: Advanced Member Groups: Member
Joined: 5/11/2009 Posts: 570
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Thanks guys. Still a fair bit of detail to add to the ballast tray but I definitely prefer it to the wheeled one!
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Rank: Advanced Member Groups: Member
Joined: 6/27/2013 Posts: 937 Location: Quebec, Canada,
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Davie82 wrote:Thanks guys. Still a fair bit of detail to add to the ballast tray but I definitely prefer it to the wheeled one! Yeah, there definitely won't be any tires cracking issues with time... Very nice job. Worthy upgrade. SJ
___________________________________________________ Playing with toys since 1970, now building them.
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Rank: Advanced Member Groups: Member
Joined: 4/13/2011 Posts: 1,021 Location: California
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Very nice upgrade to the model. I like the tray too looks sweet. SOMETHING IS BETTER THAN NOTHING. http://s1185.photobucket.com/home/vipyfz2008/indexhttp://www.youtube.com/user/vipyfz?feature=mheeluis.
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