Iwan

Iwan,

Are the sheave bolts shoulder bolts? (With a polished cylindrical section through the cheeks and sheave followed by a smaller threaded section for the nut. Sometimes called stripper bolts.)

Or are they plain bolts? (Partially threaded, but essentially all the same diameter.)

I recommend using shoulder bolts, which will allow you to tighten the nut fully, and still allow the sheave to rotate freely. The cylindrical portion of shoulder bolts is typically polished and of an accurate diameter, which would allow your sheave to turn more freely.

If you have to use plain, partially threaded bolts, let me suggest using elastic stopnuts (sometimes called Nylock™ - which is a tradename of Forest Fasteners) like the one pictured at the top of the vertical shaft. This will allow you to leave the sheave loose without risking having the device come apart at an inopportune time.

Upper bolt: 5/16"-18 partially threaded bolt w/ elastic stop nut.
Lower bolt: Shoulder bolt 5/16 x 5/8" shoulder, 1/4-20 thread w/ plain hex nut.

Here is a US source for Shoulder Bolts: http://www.mcmaster....-screws/=9bd6t7

Hello Pete,

I was planning to use all the nylock bolts and shoulder bolts to complete the dogstake.
The picture shows just a temp. fixed dogstake have to polish everything first.
But i am glad that you informed me about it in case that i did not know.

Best regard

Iwan

Hi ,

The Dog stake is completed as you see on the pictures ,

The pulley`s can turn horizontal 360 degrees .
The big pin is used for getting the stake into the ground after that` s done you can take it out . (Maybe use it to protect yourself)

I still need to fine tune the dogstake and start polishing the whole thing .

Movie link will be here on this topic in beginning 2011


Iwan

Hi

Next step:
As you can see the pulley`s are mounted to a frame , the bottom bolt is a fixed point.
The stainless pin on the top connect 1 side of each pulley so when you take it out it`s possible to turn 1 side of each pulley towards you.
Now you can get youre lines inside the pulley`s .