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Another CC8800 Repaint - Boom Head Modification Options · View
Davie82
Posted: Friday, November 22, 2013 1:07:12 PM
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Thanks again guys. Gabriele that looks really nice and I hope to make one myself soon. Smiley
VIPCranes
Posted: Saturday, November 23, 2013 12:08:58 AM

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Well done on the customs you are doing it really looks so great.Applause Applause Applause Applause Applause Applause Applause Applause Applause Applause Applause Applause

SOMETHING IS BETTER THAN NOTHING.

http://s1185.photobucket.com/home/vipyfz2008/index

http://www.youtube.com/user/vipyfz?feature=mhee



luis.
Davie82
Posted: Thursday, January 16, 2014 1:23:34 PM
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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.



cranedude07
Posted: Thursday, January 16, 2014 1:47:03 PM

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Victor Pay
Posted: Thursday, January 16, 2014 3:47:42 PM

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Location: Netherlands
Looks great Davie Smiley
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 Smile
Davie82
Posted: Friday, January 17, 2014 3:50:42 PM
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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.



Victor Pay
Posted: Friday, January 17, 2014 3:57:28 PM

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Wonderfull ballast tray also Smiley

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 Smiley
Davie82
Posted: Friday, January 17, 2014 4:15:21 PM
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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.

Victor Pay
Posted: Friday, January 17, 2014 4:44:43 PM

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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 Smiley




Davie, do you also plan to make a derrick boom extension, to turn the crane into a CC 8800-1 ?
Smiley
Davie82
Posted: Saturday, January 18, 2014 6:34:44 AM
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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! Smile
peterf
Posted: Saturday, January 18, 2014 10:13:34 AM

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Fantastic it's looking better every time ,give me a call

http://www.flickr.com/photos/10069306@N07/
Davie82
Posted: Sunday, January 19, 2014 5:59:33 PM
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Thanks Peter. Will give you a call soon. Wink

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. Smiley





And here's the tray loaded with 52 weights and off the ground.
Save1er
Posted: Sunday, January 19, 2014 6:34:33 PM

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Looks awesome! Im lovin' the ballast tray upgrade. Drool Drool Drool
cranedude07
Posted: Sunday, January 19, 2014 6:45:15 PM

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DeWoc19
Posted: Sunday, January 19, 2014 7:25:58 PM

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Yeah im also loving the ballast tray
Davie82
Posted: Sunday, January 19, 2014 9:29:04 PM
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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!
Ironstef70
Posted: Sunday, January 19, 2014 9:59:26 PM

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Location: Quebec, Canada,
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... Think

Very nice job. Worthy upgrade.

SJ

___________________________________________________
Playing with toys since 1970, now building them.
VIPCranes
Posted: Monday, January 20, 2014 3:10:51 AM

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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/index

http://www.youtube.com/user/vipyfz?feature=mhee



luis.
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