Custom tree v-bracket prototype in the works

[kenn1320]

How much stress is there on a step compared to something like the limb bolt on a compound? That is a steel bolt into aluminum and is adjusted under tension.

Different loading conditions.

 

[DanO]

Prototypes ready for testing. Will post results tmw and some side-by-side pics with XOP and LW.


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[ImThere]

Looking good. What do they weigh?


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[DanO]

Looking good. What do they weigh?


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I'll have weight and hopefully pricing by mid-day tmw hopefully. I will say they are heavier than LW brackets but should be very similar to XOP.

 

[Tapeworm]

Those look sweet

Can’t wait to try them out


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[Squirrels]

When you get the weight please check the tip to tip width and let us know height from the back side of the stick (as in how far from tree to back of stick. Great job, I like those.


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[ricky racer]

These look nice. I'd rather see a radius instead of a square corner on the inside corner opposite the tubing interface. Let us know how your testing goes.

 

[DanO]

When you get the weight please check the tip to tip width and let us know height from the back side of the stick (as in how far from tree to back of stick. Great job, I like those.


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Overall width is 6". Overall height including ears is 3 7/16" (from a flat surface). I'll get measurements on a tree during lunch.

These look nice. I'd rather see a radius instead of a square corner on the inside corner opposite the tubing interface. Let us know how your testing goes.

We left it square so a square 1" tube would nest completely. I realize most commercial tubes are radius corners but perhaps some DIY tubes are squared off. What other benefit would a radius provide or are you talking about something else?

 

[kyler1945]

Overall width is 6". Overall height including ears is 3 7/16" (from a flat surface). I'll get measurements on a tree during lunch.


We left it square so a square 1" tube would nest completely. I realize most commercial tubes are radius corners but perhaps some DIY tubes are squared off. What other benefit would a radius provide or are you talking about something else?

Stress!

 

[ricky racer]

We left it square so a square 1" tube would nest completely. I realize most commercial tubes are radius corners but perhaps some DIY tubes are squared off. What other benefit would a radius provide or are you talking about something else?

A square corner invites cracks due to stress concentration. A radius will distribute the stress instead of concentrating all the stress at one point (the corner). You'll find that out when you test them. That's where they will fail if you test them to that point.

 

[DanO]

A square corner invites cracks due to stress concentration. A radius will distribute the stress instead of concentrating all the stress at one point (the corner). You'll find that out when you test them. That's where they will fail if you test them to that point.

These are quite a bit beefier than even the XOP which is beefier than the LW. The XOP brackets have square corners and I haven't seen these break that often except when used improperly with a ratchet strap.

 

[ricky racer]

These are quite a bit beefier than even the XOP which is beefier than the LW. The XOP brackets have square corners and I haven't seen these break that often except when used improperly with a ratchet strap.

Maybe the load applied to the standoff is not that much. Your testing should provide feedback.

In the engineering test lab I worked in, we would load and unload that part to simulate repeated load cycles with hydraulic test machines.

Anyway, they look great. Thanks for providing the solutions you've been working on for us saddle guys.

 

[DanO]

FYI - will not be doing destructive testing on these today, just functional testing. I will stress it with one of my quick release OCB straps, but mostly testing to see how they work on the tree with Amsteel rope mod. Again, these are for climbing sticks only, not platform posts.

 

[DanO]

Top - XOP v bracket (no longer available)
Middle - New Climbing stock bracket from DoubleSteps
Bottom - Lone Wolf stick bracket

Comparison with LW

Comparison with XOP

12” tree

I used my ring of steps strap with quick release buckle to tighten these down as much as possible. With my 220# it moved 3/16” down the tree. I could not notice any deflection in the bracket with as much torque as I could put on it.


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[DanO]

Weight is 4.75oz. We are waiting on quotes from aluminum suppliers before we can finalize pricing, so it might be late Wednesday or Thursday before we have price set due to the holiday.

 

[hangloosehogs]

Would be awesome to have a version that works on heliums also!

 

[DanO]

Would be awesome to have a version that works on heliums also!

In time, in time. I had those quoted from a water jet company and best price was about $17 a bracket. Not cost efficient. Might be able to do something cheaper than that machining.

 

[Islandshooter]

DanO, those standoffs will be perfect to keep the aides further off the tree. Great ideas! Love my double steps

 

[Labonte.r]

Nice job my stick build just keeps getting more and more expensive!

 

[DanO]

Nice job my stick build just keeps getting more and more expensive!

But they will be really nice sticks when you're done!