Anyone know why this happened??

[PC tree]

Its the shear plane, that allows the tree to flex in the wind. Sycamores particulary are prone to this, as others have said it is the tension being released. Always good to stop you from becomming complacient when it goes pop.

 

 

Interesting!!! Complacent and tree climbing... Big no no

[lgl]

Oh ok, I am guessing Dave means through drying, Ash when clean and straight will pop , especially summer felled. A lot of mills cut the crown off through a knot to prevent splitting.

[Drew87]

This is a really good example of 'Dry Timber' .. Without repeating what others have said .. Simple explanation:

 

Sycamore is low in .. Sap (which helps 'Bond' timber fibres and makes easier cutting / felling)

 

Trees with Low sap usually have High Water consistency, but in Ash & Syc for example grow much slower, have tighter grain, which in turn has a lower 'Saturation Count' .. Hence 'Dry Timber' .. prone to 'Crack' .. Most simple explanation I can give without posting links etc.

 

Hope it helps understand your 'Why this happend(s)' .. as stated, I do agree with most .. Dry timber .. High Tension

 

[D A Tree Surgeons]

Ive had this a far bit with Sycamores

[skyhuck]

This is a really good example of 'Dry Timber' .. Without repeating what others have said .. Simple explanation:

 

Sycamore is low in .. Sap (which helps 'Bond' timber fibres and makes easier cutting / felling)

 

Trees with Low sap usually have High Water consistency, but in Ash & Syc for example grow much slower, have tighter grain, which in turn has a lower 'Saturation Count' .. Hence 'Dry Timber' .. prone to 'Crack' .. Most simple explanation I can give without posting links etc.

 

Hope it helps understand your 'Why this happend(s)' .. as stated, I do agree with most .. Dry timber .. High Tension

 

 

:confused1:You think Ash and Sycamore are slow growers????????????

[Drew87]

:confused1:You think Ash and Sycamore are slow growers????????????

 

Slower than alot of others we have .. to be more accurate its nearer the middle of the range between Coni - Oak .. Sorry for not makin that 100% clearer .. did state was a basic explaination .. but after that theres always a nit picker about

[treesrus]

looks like your hinge is slightly off, suggests maybe the tension was released in the upper half fractionally earlier than in the lower half.

[PC tree]

looks like your hinge is slightly off, suggests maybe the tension was released in the upper half fractionally earlier than in the lower half.

 

 

I doubt it would make much difference as it was a clean stem that was roped over, so there wasn't much tension on anyway. Perhaps it might have been the case if there were heavy laterals pulling at it..

 

Cheers

[waz77]

I would have thought it was just the medullary rays splitting when the tension was released, like they do if dried too quickly through shrinkage? At a guess.

[kevinjohnsonmbe]

Its the shear plane, that allows the tree to flex in the wind. Sycamores particulary are prone to this, as others have said it is the tension being released. Always good to stop you from becomming complacient when it goes pop.