|
Construction Equipment If it digs, pushes, hauls dirt "off road" post it here. |
|
Thread Tools | Display Modes |
#36
|
||||
|
||||
Re: Nylint michigan crane conversion, hopefully
It was pointed out to me that i didn't include several measurements from my Cable Drums...
1" rod stock, clean up OD 0.250 long shoulders at 1" OD 1.5" OAL 0.750" diameter cable bed (1/8" deep) 1" long cable bed Center drilled for whatever mount system you're considering Bonus points, Lightly score for alignment of servo horn OD or screw holes Cable bed of spool is the last gear ratio of a cable machine, like changing tire height on a car. Diameter x 3.14 = line pull per revolution. < 0.750" x 3.14 = 2.355" line per rev on base wrap > Line pull per revolution x RPM (or look up Servo transit speeds, convert angle to 360...) < 0.2sec @ 60 deg... 0.2 / 60 sec = 300, 60 deg transit = 6 per rev, 50 rpm = 117 inch of line per minute max speed > so i'm running channel EPA cranked way down. Bigger spool = faster pull / less torque Smaller spool = slower pull / more torque Dragline fairlead (suggested prior art) https://patents.google.com/patent/US3006608 I just use some redirect sheeves to catch and pull the crowd back inline to get through the boom in a Z path
__________________
What do ya mean "Cars are neither Trucks or Construction"? It's still scale, and i play fairly well with others, most of the time... Last edited by frizzen; 10-12-2023 at 01:04 PM. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|