 | | | | | |
I have been working on my next project...
Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
capacity of 3200 tons....
I have started my model of this monster!
Check out the bs folder for any new progress....
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
This is going to be a record breaker..height, capacity, you name it, this one is
going to do it...
-Alvin.
| | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
Now theres a challenge! :-)
| | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Steven Lane wrote:
> In lugnet.technic, Alvin Brant wrote:
>
> > This is going to be a record breaker..height, capacity, you name it, this one is
> > going to do it...
> >
> > -Alvin.
>
> Now theres a challenge! :-)
I guess that was kind of a "bold" statement :D
I can say that it is shaping up to be the biggest thing that I have ever built!!
Keep checking the Brickshelf folder for further progres...I will be sure to keep
all updated!
Thanks!
-Alvin.
| | | | | | | | | | | | | | | | | | |
I can't see from your photos how you're stopping the main structure lifting off
the base.
Correct me if I'm wrong, but crane turntables hold the superstructure down so
the load moment is transferred to the crawler base. I've seen photos of cranes
tipping and they don't fall off the turntable, they take the base with them.
I've had a couple of (incomplete) goes at a crawler, and I've used two
turntables, one inverted, with the centres tied together and to the
superstructure, and the outer rings locked into the base. That way, the
superstructure can't detach from the base.
Great looking model so far though.
Regards
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| |
|
In lugnet.technic, Gordon Bentley wrote:
> I can't see from your photos how you're stopping the main structure lifting off
> the base.
>
> Correct me if I'm wrong, but crane turntables hold the superstructure down so
> the load moment is transferred to the crawler base. I've seen photos of cranes
> tipping and they don't fall off the turntable, they take the base with them.
This is correct. Real cranes have roller bearings that are pinned in place that
bear the weight and force of the superstructure where it is connected to the
base.
> I've had a couple of (incomplete) goes at a crawler, and I've used two
> turntables, one inverted, with the centres tied together and to the
> superstructure, and the outer rings locked into the base. That way, the
> superstructure can't detach from the base.
I am going to use a threaded axle through the center to hold the plates down,
and then typical beams and plates connected perpindicularly by vertical beams to
hold down the rest...(still working on the final design)
>
> Great looking model so far though.
Thanks! Check back in from time to time for updated progress!
>
> Regards
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> I am going to use a threaded axle through the center to hold the plates down,
> and then typical beams and plates connected perpindicularly by vertical beams to
> hold down the rest...(still working on the final design)
Mine has that.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Steven Lane wrote:
> In lugnet.technic, Alvin Brant wrote:
>
> > I am going to use a threaded axle through the center to hold the plates down,
> > and then typical beams and plates connected perpindicularly by vertical beams to
> > hold down the rest...(still working on the final design)
>
> Mine has that.
It worked pretty well for me on this one:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1153576
and all of these:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1990845
I have had no problems with the two parts coming apart....If you can tell by
this pic, the red and white one is holding up a 8421 almost 8 feet away from the
center of rotation... (pardon my astonishment...I had just won a frickin
starwars set for best in show at brickfest 06'...wow..) yeah, the sarcasm was
running deep on that one...starwars..blah...anywho, here is the pic of the
CRANE, not the starwars set :)
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1995277
I will let you all know how much this one can lift :)
-Alvin.
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In lugnet.technic, Alvin Brant wrote:
> In lugnet.technic, Steven Lane wrote:
> > Mine has that.
>
> It worked pretty well for me on this one:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1153576
>
> and all of these:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1990845
That's a lot of cranes. Are they all yours?
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1995277
>
> I will let you all know how much this one can lift :)
I know I'd like to know.
Steve
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Steven Lane wrote:
> In lugnet.technic, Alvin Brant wrote:
> > In lugnet.technic, Steven Lane wrote:
>
> > > Mine has that.
> >
> > It worked pretty well for me on this one:
> >
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1153576
> >
> > and all of these:
> >
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1990845
>
> That's a lot of cranes. Are they all yours?
>
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1995277
> >
> > I will let you all know how much this one can lift :)
>
> I know I'd like to know.
>
> Steve
Yeah, Steve, those are all mine...That was at BF 06' They are all still
together with the exception of the truck mounted one. The superstructure and
boom is still together, but I tore apart the "truck" part of it to rebuild in
the near future.... I am building the newest crawler with all new parts, So I
will not have to destroy any of these pictured above to make it....Yeah, I have
too much free time and $$ to spend on Lego...
-Alvin.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> I have too much free time and $$ to spend on Lego...
Wish I did. :-)
Steve
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> In lugnet.technic, Steven Lane wrote:
> > In lugnet.technic, Alvin Brant wrote:
> >
> > > I am going to use a threaded axle through the center to hold the plates down,
> > > and then typical beams and plates connected perpindicularly by vertical beams to
> > > hold down the rest...(still working on the final design)
> >
> > Mine has that.
>
> It worked pretty well for me on this one:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1153576
<snip>
> -Alvin.
Oh. My. Goodness!!!
That would hurt if it fell on you!
Once again the LEGO builders--in whatever theme--never cease to astound me!
Nicely done!
Dave K
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| |
|
Impressive supply of Technic beams you have there :-) The completed model is
going to be a monster. Nice job.
In lugnet.technic, Alvin Brant wrote:
> In lugnet.technic, Gordon Bentley wrote:
> > I can't see from your photos how you're stopping the main structure lifting off
> > the base.
> >
> > Correct me if I'm wrong, but crane turntables hold the superstructure down so
> > the load moment is transferred to the crawler base. I've seen photos of cranes
> > tipping and they don't fall off the turntable, they take the base with them.
>
> This is correct. Real cranes have roller bearings that are pinned in place that
> bear the weight and force of the superstructure where it is connected to the
> base.
>
> > I've had a couple of (incomplete) goes at a crawler, and I've used two
> > turntables, one inverted, with the centres tied together and to the
> > superstructure, and the outer rings locked into the base. That way, the
> > superstructure can't detach from the base.
>
> I am going to use a threaded axle through the center to hold the plates down,
> and then typical beams and plates connected perpindicularly by vertical beams to
> hold down the rest...(still working on the final design)
>
> >
> > Great looking model so far though.
>
> Thanks! Check back in from time to time for updated progress!
> >
> > Regards
I've been checking out the design of the dual CC8800, and it appears to not
really require that the turntable resists overturning moments. If the wheeled
ballast carrier in the back is connected, then the main turntable will mostly
see vertical (compressive) loads. If the crane tips, then the wheeled ballast
carrier will lift off the ground, and the whole thing will "hinge" about the
main turntable (I've seen this happen in real life on Manitowoc 2250's with
wheeled ballast carriers - in fact, crane operators will purposely do this so
that it's easier to slew). If you carefully control your load (which is how it's
done in real life), then your rear wheels come off the ground slightly and the
whole rig is carefully balanced on the main turntable. The main turntable will
see a very small amount of overturning moment, but it's controlled by the
careful balance being maintained between the load and the rear ballast.
Hope that makes sense. Here's a shot of the 2250 during a heavy lift. With the
wheels being off the ground, it's easier for the crane to slew and also move on
its crawlers (i.e. you don't have to stop and align the wheels to the movement
of the crane).
http://www.texbrick.com/temp/2250_liftoff.jpg
Of course the first time I saw this, I freaked out and ran over to the yard
leaderman. He explained that it was the normal way of doing things :-)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Thomas Avery wrote:
> Impressive supply of Technic beams you have there :-) The completed model is
> going to be a monster. Nice job.
Yeah, check out my brickshelf folder....I still have all the cranes there with
the exception of the 18000...So I have a good bit of beams :D
> I've been checking out the design of the dual CC8800, and it appears to not
> really require that the turntable resists overturning moments. If the wheeled
> ballast carrier in the back is connected, then the main turntable will mostly
> see vertical (compressive) loads. If the crane tips, then the wheeled ballast
> carrier will lift off the ground, and the whole thing will "hinge" about the
> main turntable (I've seen this happen in real life on Manitowoc 2250's with
> wheeled ballast carriers - in fact, crane operators will purposely do this so
> that it's easier to slew). If you carefully control your load (which is how it's
> done in real life), then your rear wheels come off the ground slightly and the
> whole rig is carefully balanced on the main turntable. The main turntable will
> see a very small amount of overturning moment, but it's controlled by the
> careful balance being maintained between the load and the rear ballast.
>
> Hope that makes sense. Here's a shot of the 2250 during a heavy lift. With the
> wheels being off the ground, it's easier for the crane to slew and also move on
> its crawlers (i.e. you don't have to stop and align the wheels to the movement
> of the crane).
>
> http://www.texbrick.com/temp/2250_liftoff.jpg
>
> Of course the first time I saw this, I freaked out and ran over to the yard
> leaderman. He explained that it was the normal way of doing things :-)
Yeah, I have seen the 2250's do the same thing. One thing that I have noticed
about the 8800-Twin is the fact that the side counterweight carriers do not have
wheels on them, so if the crane is not under load and the maximum counterweight
is placed on them, it cannot slew. I thought they would have used a dual
counterweight cart just like the 12600 does?? Makes no sense to me, but I
didn't design it :D
-Alvin.
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In lugnet.technic, Gordon Bentley wrote:
| |
I can’t see from your photos how you’re stopping the main structure lifting
off the base.
Correct me if I’m wrong, but crane turntables hold the superstructure down so
the load moment is transferred to the crawler base. I’ve seen photos of cranes
tipping and they don’t fall off the turntable, they take the base with them.
|
Yes, that is correct.
| |
I’ve had a couple of (incomplete) goes at a crawler, and I’ve used two
turntables, one inverted, with the centres tied together and to the
superstructure, and the outer rings locked into the base. That way, the
superstructure can’t detach from the base.
|
See also
my technique - this allowed me to lift the whole crane base up by the
superstructure.
ROSCO
| | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Ross Crawford wrote:
| |
See also
my technique - this allowed me to lift the whole crane base up by the
superstructure.
ROSCO
|
Great crane Rosco, shame their’s no accompanying text.
Steve
| | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Steven Lane wrote:
| |
In lugnet.technic, Ross Crawford wrote:
| |
See also
my technique - this allowed me to lift the whole crane base up by the
superstructure.
|
Great crane Rosco, shame their’s no accompanying text.
|
Thanks, read about it
here.
ROSCO
| | | | | | | | | | | | | | | | | | |
Good lord! That is going to be some monster project! The forces and scale
involved is quite impressive. Is that monorail track as the main pivoting guide?
*faints*
Eric Sophie
| | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> I have been working on my next project...
>
> Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
> capacity of 3200 tons....
>
> I have started my model of this monster!
>
> Check out the bs folder for any new progress....
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
>
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
Posted some updated pics of the progress...
Not the best resolution, but you can get the idea...
Folder when moderated: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
deep link to one pic:
http://www.brickshelf.com/gallery/abrant23/CC-8800-Twin/dsc00110.jpg
-Alvin.
| | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> I have been working on my next project...
>
> Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
> capacity of 3200 tons....
>
> I have started my model of this monster!
>
> Check out the bs folder for any new progress....
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
>
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
Posted some updated pics of the ballast cart....
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3087742
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3087747
and
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3087750
More updatetes to follow...(if I can ever get back to building)
-Alvin.
| | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
> I have been working on my next project...
>
> Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
> capacity of 3200 tons....
>
> I have started my model of this monster!
>
> Check out the bs folder for any new progress....
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
>
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
I have almost finished the Ballast cart:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
I wish there was somewhere I could get a few of those new linear actuators. I
really need them before August so I can finish this thing in time for Brickfest!
Enjoy!
-Alvin.
| | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
This is of course a very impressive crane, all in terms of size, complexity and
how well it is capturing the look of the real thing.
When it’s finished, please post a pic showing its maximum load capacity - do you
think 2 or 3 UCS Tie Interceptors at one time would be doable?
| | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Bob Parker wrote:
| |
In lugnet.technic, Alvin Brant wrote:
This is of course a very impressive crane, all in terms of size, complexity
and how well it is capturing the look of the real thing.
When it’s finished, please post a pic showing its maximum load capacity - do
you think 2 or 3 UCS Tie Interceptors at one time would be doable?
|
Bob, thanks for the compliments! I think that 2 or 3 Tie Interceptors would me
more than doable! I am expexting it to be able to lift around 10 lbs at the
full height of 25 feet, and somewhere in the neighborhood of 50 lbs with only 5
feet of boom. I will post some pictures once it is finished, and I am also
planning on taking it to BrickFair in DC this year.
The single boom version of this same crane easily lifted a 8421 with no problems
with 15 feet of boom at BF 06’
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1995277
Yeah, I am being sarcastic in that picture :D
-Alvin.
| | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Alvin Brant wrote:
| |
In lugnet.technic, Bob Parker wrote:
| |
In lugnet.technic, Alvin Brant wrote:
This is of course a very impressive crane, all in terms of size, complexity
and how well it is capturing the look of the real thing.
When it’s finished, please post a pic showing its maximum load capacity - do
you think 2 or 3 UCS Tie Interceptors at one time would be doable?
|
Bob, thanks for the compliments! I think that 2 or 3 Tie Interceptors would
me more than doable! I am expexting it to be able to lift around 10 lbs at
the full height of 25 feet, and somewhere in the neighborhood of 50 lbs with
only 5 feet of boom. I will post some pictures once it is finished, and I am
also planning on taking it to BrickFair in DC this year.
The single boom version of this same crane easily lifted a 8421 with no
problems with 15 feet of boom at BF 06’
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1995277
Yeah, I am being sarcastic in that picture :D
-Alvin.
|
Hey Alvin - now that you have completed your Terex-Demag CC-8800-1 3,200 ton
crane, have you tested it with any loads yet?
If you don’t have 2 or 3 UCS Tie Interceptors handy, I guess you try using a
couple of the largest Technic sets you have at the same time.
Have you made a suitably large load spreader for super lifts like the one shown
here?
| | | | | | | | | | | | | | | | | | | | | | | |
In lugnet.technic, Bob Parker wrote:
| |
Hey Alvin - now that you have completed your Terex-Demag CC-8800-1 3,200 ton
crane, have you tested it with any loads yet?
If you don’t have 2 or 3 UCS Tie Interceptors handy, I guess you try using a
couple of the largest Technic sets you have at the same time.
Have you made a suitably large load spreader for super lifts like the one
shown
here?
|
You don’t have to use Technic models you know, I use house bricks with a sling
made from shoe laces. :-)
| | | | | | | | | | | | | | | | | | | | | | | |
>
> Hey Alvin - now that you have completed your Terex-Demag CC-8800-1 3,200 ton
> crane, have you tested it with any loads yet?
>
> If you don't have 2 or 3 UCS Tie Interceptors handy, I guess you try using a
> couple of the largest Technic sets you have at the same time.
>
> Have you made a suitably large load spreader for super lifts like the one
> shown
> <http://www.cranestodaymagazine.com/pictures/360xany/u/i/b/CC8800_1TWIN_2.jpg
> here>?
No load tests as of yet. I just got back from BrickFair.
http://www.brickshelf.com/gallery/abrant23/Brickfair08/dsc00452.jpg
I assembled it inside for the first time. I have built the first part of the
spreader, which can be seen here:
http://www.brickshelf.com/gallery/abrant23/Brickfair08/dsc00397.jpg
http://www.brickshelf.com/gallery/abrant23/Brickfair08/dsc00398.jpg
I still have a bit of work left to do in order for it to be completely
"finished"
I will make a formal announcement when it is done!
Thanks
-Alvin
| | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Alvin Brant wrote:
> I have been working on my next project...
>
> Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
> capacity of 3200 tons....
>
> I have started my model of this monster!
>
> Check out the bs folder for any new progress....
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
>
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
Well, after many dissapointments over the weekend:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=328336
I finally got to raise the main boom on this creation:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273583
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273593
Looks like I need to stiffen up the boom a bit...
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273901
There sill is going to be a fixed jib added for the lifting test, and a Luffing
jib added to try and break my previous record for height! I am hoping for 22 or
23 feet on this one!
Hope you all enjoy!
-Alvin.
| | | | | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Alvin Brant wrote:
> Well, after many dissapointments over the weekend:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=328336
Ouch. That's a birds-nest mess of string you got there :-) But looks like it
faired better than my crane that decided to go down in a hurry (serious operator
error :-)
http://texbrick.com/creations/msg_50/msg50_8.jpg
> Looks like I need to stiffen up the boom a bit...
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273901
>
> There sill is going to be a fixed jib added for the lifting test, and a Luffing
> jib added to try and break my previous record for height! I am hoping for 22 or
> 23 feet on this one!
>
> Hope you all enjoy!
>
> -Alvin.
You're dealing with a relatively shallow boom cross section (i.e. thickness is
fairly thin compared to length). I don't think you'll see much improvement
unless you make the boom cross section thicker (deeper), which unfortunately,
you probably can't if you're keeping things in scale.
Also, you have doubled-up beams for the main chords on your boom truss, and that
is adding a lot of weight to the boom. You could probably do without
double-beams. Since you have a double boom (side-by-side twin booms), then with
single-beam main chords you'd still have 8 Technic beams as your minimum cross
section. That's plenty strong.
You might consider re-designing your truss pattern so that the joints line up on
one hole (example: http://texbrick.com/creations/msg_50/truss.jpg). But I'm
thinking that will only give you slight improvement in overall truss stiffness.
It's plastic, not steel :-)
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Thomas Avery wrote:
>
> You're dealing with a relatively shallow boom cross section (i.e. thickness is
> fairly thin compared to length). I don't think you'll see much improvement
> unless you make the boom cross section thicker (deeper), which unfortunately,
> you probably can't if you're keeping things in scale.
>
> Also, you have doubled-up beams for the main chords on your boom truss, and that
> is adding a lot of weight to the boom. You could probably do without
> double-beams. Since you have a double boom (side-by-side twin booms), then with
> single-beam main chords you'd still have 8 Technic beams as your minimum cross
> section. That's plenty strong.
>
> You might consider re-designing your truss pattern so that the joints line up on
> one hole (example: http://texbrick.com/creations/msg_50/truss.jpg). But I'm
> thinking that will only give you slight improvement in overall truss stiffness.
> It's plastic, not steel :-)
You mean plastic bends?? Dang :)
I actually have had a good bit of success stiffening up the boom. The majority
of the give in the boom was coming from the point where the sections are pinned
together. The axles were flexing and letting the bottom two points at each
joint give a good bit. I strengthened these areas by placing plates across
them, and it has worked like a charm. I will post some pics this weekend of the
comparison between the former and the latest!
Thanks for all the positive comments and suggestions!
-Alvin.
| | | | | | | | | | | | | | | | | | | | | | | | |
| |
|
In lugnet.technic, Alvin Brant wrote:
>
> Well, after many dissapointments over the weekend:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=328336
>
> I finally got to raise the main boom on this creation:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273583
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273593
>
> Looks like I need to stiffen up the boom a bit...
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3273901
>
> There sill is going to be a fixed jib added for the lifting test, and a Luffing
> jib added to try and break my previous record for height! I am hoping for 22 or
> 23 feet on this one!
>
> Hope you all enjoy!
Ha! You're not a real crane builder till you've had at least one massive failure
;)
Looking good Alvin. And you'd be surprised how much steel booms bend - check out
this pic for an example:
http://br-eng.info/gallery/v/general/prototypes/construction/cc2800/DCP_1883.jpg.html
(Line up a piece of paper along it to see the bend)
OK, not quite as much as yours, but you can't expect too much with plastic!
ROSCO
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In lugnet.technic, Ross Crawford wrote:
> Ha! You're not a real crane builder till you've had at least one massive failure
> ;)
>
> Looking good Alvin. And you'd be surprised how much steel booms bend - check out
> this pic for an example:
> http://br-eng.info/gallery/v/general/prototypes/construction/cc2800/DCP_1883.jpg.html
>
> (Line up a piece of paper along it to see the bend)
>
> OK, not quite as much as yours, but you can't expect too much with plastic!
>
> ROSCO
Ross,
Check these pics out....the first one is my favorite "boom flex" photo, and the
second one is a pic of the boom flexing on the original cc8800-Twin!
Enjoy...
http://www.majhost.com/gallery/abrant23/sarens/sarens1.jpg
http://www.majhost.com/gallery/abrant23/sarens/20071122170316_1_tof_terex_cc_8800_twin_361qua361.jpg
-Alvin.
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In lugnet.technic, Alvin Brant wrote:
> In lugnet.technic, Ross Crawford wrote:
> > Ha! You're not a real crane builder till you've had at least one massive failure
> > ;)
> >
> > Looking good Alvin. And you'd be surprised how much steel booms bend - check out
> > this pic for an example:
> > http://br-eng.info/gallery/v/general/prototypes/construction/cc2800/DCP_1883.jpg.html
> >
> > (Line up a piece of paper along it to see the bend)
> >
> > OK, not quite as much as yours, but you can't expect too much with plastic!
> >
> > ROSCO
>
> Ross,
>
> Check these pics out....the first one is my favorite "boom flex" photo, and the
> second one is a pic of the boom flexing on the original cc8800-Twin!
>
> Enjoy...
>
> http://www.majhost.com/gallery/abrant23/sarens/sarens1.jpg
> http://www.majhost.com/gallery/abrant23/sarens/20071122170316_1_tof_terex_cc_8800_twin_361qua361.jpg
Not only lattice booms either...
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=247592
ROSCO
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In lugnet.technic, Alvin Brant wrote:
> I have been working on my next project...
>
> Terex Demag has introduced a new "twin" kit for the CC8800. This crane has a
> capacity of 3200 tons....
>
> I have started my model of this monster!
>
> Check out the bs folder for any new progress....
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=300293
>
> This is going to be a record breaker..height, capacity, you name it, this one is
> going to do it...
>
> -Alvin.
Well, It still is raining, so I had to try to lift the boom inside...Man what a
strain this caused!!!
She made it off the floor with a bit of added weight on the back :)
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=338506
More pictures of the final version will be posted next week after Brickfair!
Thanks..
-Alvin.
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In lugnet.technic, Alvin Brant wrote:
>
> Well, It still is raining, so I had to try to lift the boom inside...Man what a
> strain this caused!!!
>
> She made it off the floor with a bit of added weight on the back :)
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=338506
>
> More pictures of the final version will be posted next week after Brickfair!
>
> Thanks..
>
> -Alvin.
Rain seams to be a pain for everyone recently. Especially me.
Your crane looks amazing. I still haven't made any progress with my own crane.
It's no wonder you needed extra ballast with all that weight sticking out the
front.
I'll look out for the final pics!
Steve
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