Unit Cable Hoe

[Rvjimd]

Scott,

Where are you finding your donor units? I've been telling myself I need to get to some yard sales this spring to see if I can find anything to convert.

Looked at the local antique stores but didn't really see anything.

Also, do you have any pictures of the electrical connections for the hoe pivot? Did you use an audio jack?

Thanks

Jim

[SmallHaul]

Jim,

i bought both of my Units off ebay years ago. Now they ask crazy prices for them.

i run a JR 9503 in the cable Hoe and with JR & Spektrum you can bind multiple rx's to one radio at the same time. So, i have a separate battery, rx and power switch in the undercarriage.

i use these $6 rx's from hobby king:

http://www.hobbyking.com/hobbyking/s..._Receiver.html

[Rvjimd]

Scott,

I sort of thought, "that would be cool if you could do the two RX thing!" I wonder if you can do that with the DX6i?


I guess I need to look for some garage sales and see if I get lucky!

Jim

[Rvjimd]

Scott,

Another question. Where are you getting the brass pulleys, like on the stick?

Thanks

Jim

PS I tried binding two RX to my DX6i and that does work.

[pigeonfarmboy]

Helps to be a Spektrum/JR DSMX receiver and radio to bind multiple receivers to one radio.

[Rvjimd]

Originally Posted by pigeonfarmboy

Has to be a Spektrum/JR DSMX receiver and radio to bind multiple receivers to one radio.

It worked for me, I did read that BOTH RX that you use must be the same bit rate. Dsmx or dsm2. They can not be one of each.

Jim

[SmallHaul]

Originally Posted by pigeonfarmboy

Helps to be a Spektrum/JR DSMX receiver and radio to bind multiple receivers to one radio.

I am using a JR9503 (non-X) and two hobby king clone $9 rx's both bound to my JR9503 at the same time and it works fine.

[dman10]

Thanks, also, how do they size the chain?

[SmallHaul]

This explains #35 chain:

http://www.ehow.com/info_8079990_dif...-40-chain.html

The smaller chain that drives off of the servo is #25 chain and is actually very strong too.

i can't remember the place where i got the #35 chain with K-1 links from but, any place that sells bearings and drives should be able to order it for you.

[Rvjimd]

Scott,

I just went thru this entire thread again, lots of good info, thanks!

Jim

[SmallHaul]

Thanks Jim.

It is nice to have detailed build information to get more people to build equipment in this hobby.

[Old Mechanic]

Hi smallhaul,

I have been looking at some of your different videos and wanted to know if one take up spool runs free when another is moving the arm, or do you control each one at the same time with stick movement? In other words when one is taking in cable is the other spool running out under power or free wheeling? Hope you can figure out what I am asking about. If you do this with stick movement I would like to see a video showing the stick movements and the bucket & arms at the same time. It must keep you busy.

I have an old Unit Crane that was given to me for Christmas when I was 11 years old..... I am now 76. Did you make or buy the extension boom section on your drag line version? I would like to try a drag line version but feel the boom should be longer to get proper reach.

I really enjoy all of the info in your posts and am learning a lot. The are very good at explaining folks questions and what you have done to get the finished results.

Thanks a lot. Keep up the good work!

[SmallHaul]

Originally Posted by Old Mechanic

Hi smallhaul,

I have been looking at some of your different videos and wanted to know if one take up spool runs free when another is moving the arm, or do you control each one at the same time with stick movement? In other words when one is taking in cable is the other spool running out under power or free wheeling? Hope you can figure out what I am asking about. If you do this with stick movement I would like to see a video showing the stick movements and the bucket & arms at the same time. It must keep you busy.

I have an old Unit Crane that was given to me for Christmas when I was 11 years old..... I am now 76. Did you make or buy the extension boom section on your drag line version? I would like to try a drag line version but feel the boom should be longer to get proper reach.

I really enjoy all of the info in your posts and am learning a lot. The are very good at explaining folks questions and what you have done to get the finished results.

Thanks a lot. Keep up the good work!

Hello Old Mechanic, Both cable lines are tight most of the time working together to control the stick/bucket... I have both the Unit cable shovel and the Unit dragline setup the same way. Here is a video from my old youtube channel showing the radio functions on the Unit drag line.

https://www.youtube.com/watch?v=1sm6...bBWIWHuSZKOPBw

Cable machines have a hoist cable (cable that goes to the top of the boom to lift up) and a crowd cable (cable that goes towards the machine to pull in).

So to dig with a cable shovel you would lift with the hoist cable and keep the crowd line tight to raise the boom/stick/bucket assembly and then rotate over where you want to dig..then let the crowd cable out to extend the bucket out and then let hoist cable out to lay the fully extended arm down on the ground..then start pulling in on the hoist cable and as you pull in if you don't let some hoist cable out the whole assembly will rise so, depending on how deep you are digging you might have to give more slack to the hoist cable. It is hard to get used to on a model and even harder on a full scale machine. The first time i ran a full scale drag line i couldn't believe how hard it is to run and a cable shovel is slightly harder imho.

You really do need to keep both cables tight all of the time so that they don't get messed up on the drum. With the small models it is no big deal if you let the cables go slack on occasion but, on a full scale machine letting the cables go slack for even a few seconds can cause problems and or damage.

I have the info for the guy that i got my boom extensions from if you would like to pm me for it. I don't want to post his number up.

You should convert your Unit drag line to rc though it will give you hours and hours of enjoyment.

[Claus]

One of the great classic builds! Scott builds excitement.