RC Truck and Construction
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RC Truck and Construction (https://www.rctruckandconstruction.com/index.php)
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-   -   Bucyrus Erie crane truck (https://www.rctruckandconstruction.com/showthread.php?t=10116)

Mikem 12-05-2017 04:19 PM
Re: Bucyrus Erie crane truck
 
So the rollers need enough clearance to roll but not to tight not to loose . Hmmmm

sparkycuda 12-05-2017 04:45 PM
Re: Bucyrus Erie crane truck
 
Yes. When we adjusted hook rollers, we'd lay the boom straight out (sometimes with weight on it) to tilt house forward, then measure clearance at top of front rollers and at bottom of rear rollers. Since rollers are tapered, adding or removing shaft shims would push them toward or let them pull away from the center shaft, altering the clearance between roller and circle flange.

Ken

Mikem 12-05-2017 05:09 PM
Re: Bucyrus Erie crane truck
 
Ok now just have to build that in 1/14 scale . Thanks Ken

markturbo 12-12-2017 12:35 PM
Re: Bucyrus Erie crane truck
 
Nice work! I like seeing these scratch built projects come to life.

Krewmember 12-12-2017 04:27 PM
Re: Bucyrus Erie crane truck
 
Quote:
Originally Posted by markturbo (Post 160269)
Nice work!
Thank you.




I had some free time over the weekend and I was able to the roof hatch on the crane housing done.

https://i.imgur.com/lwj2Svqh.jpg

https://i.imgur.com/DIwMRTUh.jpg


On a side note. I got the lathe running and bought a quick change tool post, so now all I need to get is some tooling and a drill chuck and center, and I will be able to start machining the swing ring.





Shawn.

skeeter 12-12-2017 04:31 PM
Re: Bucyrus Erie crane truck
 
I wish I had skills enough to do scratch built styrene work like that!

Mikem 12-12-2017 05:21 PM
Re: Bucyrus Erie crane truck
 
1 Attachment(s)
Looks great . I made my floor and stabilizers

Mikem 12-12-2017 05:22 PM
Re: Bucyrus Erie crane truck
 
And my pic didn’t come in sorry (frustrated )

Krewmember 12-12-2017 06:45 PM
Re: Bucyrus Erie crane truck
 
Quote:
Originally Posted by Mikem (Post 160283)
And my pic didn’t come in sorry (frustrated )
Have you tried using a image hosting site?



Shawn

Jared 12-12-2017 08:13 PM
Re: Bucyrus Erie crane truck
 
Quote:
Originally Posted by sparkycuda (Post 160103)
Love this build! Just a clarification about the center shaft and hook rollers. Center shaft does transmit propell power to lower works, but the house is also centered by the bushing around the shaft housing. Hook rollers control the tilting of the house on the ring, so clearance is needed between rollers and ring path. Roller clearance allows front rollers to contact on bottom flange and rear rollers on top flange, when lifting. If they are adjusted in too far, lack of clearance will prevent rollers from turning during house rotation.
Oops! My bad. I guess I've been away from it too long. Looking at my drawings I see I made provision for a center bearing. :o

Mikem 12-12-2017 08:47 PM
Re: Bucyrus Erie crane truck
 
You have a drawing for this piece ? Would you share it ? Mike

9W Monighan 12-13-2017 09:21 AM
Re: Bucyrus Erie crane truck
 
I've posted this in the past. Is this of any help? I have more if needed.

http://imagizer.imageshack.com/v2/10.../dscn1274k.jpg

http://imagizer.imageshack.com/v2/10...90/37/22b6.jpg

http://imagizer.imageshack.com/v2/10...0/11/22b21.jpg

http://imagizer.imageshack.com/v2/10...90/85/22b5.jpg

Mikem 12-13-2017 03:49 PM
Re: Bucyrus Erie crane truck
 
Yes I have seen these , but I’m looking for more dimensions. And I thought Jared had a personal drawing of the turntable . Reading these engineer drawing is not for the faint of heart . Thanks Mike

9W Monighan 12-13-2017 05:01 PM
Re: Bucyrus Erie crane truck
 
Usually I enlarge or reduce these drawings to fit my use. The design is pretty much the same throughout the line of these machines.
I may be able to dig a little deeper in my books and find more on those rollers.

frizzen 12-13-2017 05:46 PM
Re: Bucyrus Erie crane truck
 
Thanks for posting those drawings, i think i can find some use in them for my Michigan dragline.

Krewmember 12-14-2017 12:21 AM
Re: Bucyrus Erie crane truck
 
Quote:
Originally Posted by Mikem (Post 160317)
Yes I have seen these , but I’m looking for more dimensions. And I thought Jared had a personal drawing of the turntable . Reading these engineer drawing is not for the faint of heart . Thanks Mike
I took this drawing and used the measurements at the top and did some quick scaling to get the dimension for the swing ring. It should be accurate if the drawing is to scale, all you have to do is use a scale calculator to get the dimension for your model. I'm modeling to 1/14 scale, so 55 3/8" in 1/14 scale is 3.96" ;)

https://i.imgur.com/ElByFp6h.png


I hope this helps you.





Shawn

Mikem 12-14-2017 06:30 AM
Re: Bucyrus Erie crane truck
 
Thanks for this it does help . I was using my guesstimated size of 4 inches , so that was close to 3.96.

Krewmember 12-15-2017 06:22 PM
Re: Bucyrus Erie crane truck
 
A small bit of progress on the crane. I made this service hatch, I don't know what it's supposed access on the real machine but it should come in handy to access the winch motors or a battery.


https://i.imgur.com/npnIRz7h.jpg

https://i.imgur.com/vilSiLsh.jpg





Shawn

skeeter 12-15-2017 07:43 PM
Re: Bucyrus Erie crane truck
 
Nice

bigpipespete 12-15-2017 07:59 PM
Re: Bucyrus Erie crane truck
 
What color have you picked , and do you plan on making it look like new or an old tired machine like in that picture ?


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