Chipper blade snapped

[openspaceman]

1 hour ago, PeteB said:

We use copper slip on CS100 blade torch bolts. 

I suspect you mean torx?

 

I was chatting to an engineer about higher strength counter sunk bolts and he was explaining countersunk bolts could not be stated as the high tensile strength 12.9 like the equivalent cap head bolt could be and that the countersunk head itself limits it to be only sold as 10.9, were you aware of this?

[aspenarb]

The bladegate scandal is still running

 

I would like to think Forst will be modifying the blade set up and putting the blade behind the rotor with a clamp to hold it down rather than the two bolt system they currently use to hold it on the front.

 

 

The system on the left vs the one on the right is a no brainer.

 

Edited July 12, 2020 by aspenarb
because Bob is an illiterate twat.

[PeteB]

2 hours ago, openspaceman said:

I suspect you mean torx?

 

I was chatting to an engineer about higher strength counter sunk bolts and he was explaining countersunk bolts could not be stated as the high tensile strength 12.9 like the equivalent cap head bolt could be and that the countersunk head itself limits it to be only sold as 10.9, were you aware of this?

Sorry  I was auto corrected. 

[GA Groundcare]

We copper slip CS100, TW 125 & TW150 blade bolts.

 

TW blades and GreenMech blades sit in a pocket / against a ledge so the load going through the retaining bolt is fairly low in reality. 

[GA Groundcare]

On 10/07/2020 at 21:00, PeteB said:

 

The models of chipper that incorporate a hydraulic tank as part of the wrap can experience significant damage which could result in massive oil loss, damage and cost if the blade punctures that and badgers the chassis too. Maintenance is critical, make time for it before it makes the time necessary and expensive.

We had a job about 5 years ago on a A530 tracked where this happened. It was down a bank by a stream, blade went through the hydraulic tank. Recovery tools included a 4" fence stake, wheelbarrow, bucket of tools, oil sucker and some straps.

 

We walked to the machine from the van, removed the flywheel on the bank lifting it out on our shoulders using the stake and straps, we then sucked the hydraulic oil down past the damaged tank, drove the machine out of its location at low revs and tracked it back to the van where the trailer was with the flywheel in the wheelbarrow.

 

Once in the workshop we plated / welded up the hydraulic tank, replaced the damaged bearings, refitted the flywheel with new blades and the machine went on its way.

 

Quite a fun job in some respects for us... Not so much for the paying customer. 

[Khriss]

@aspenarb it an engineering absurdity to do it the way Forst have,  my only contribution could be thicker blade n use non countersunk fastners. If there is room in housing. K

[Ty Korrigan]

9 hours ago, GA Groundcare said:

We had a job about 5 years ago on a A530 tracked where this happened. It was down a bank by a stream, blade went through the hydraulic tank. Recovery tools included a 4" fence stake, wheelbarrow, bucket of tools, oil sucker and some straps.

 

We walked to the machine from the van, removed the flywheel on the bank lifting it out on our shoulders using the stake and straps, we then sucked the hydraulic oil down past the damaged tank, drove the machine out of its location at low revs and tracked it back to the van where the trailer was with the flywheel in the wheelbarrow.

 

Once in the workshop we plated / welded up the hydraulic tank, replaced the damaged bearings, refitted the flywheel with new blades and the machine went on its way.

 

Quite a fun job in some respects for us... Not so much for the paying customer. 

In the past, owners of German tracked machines would have just denonated charges, blowing them up so competitors couldn't poke around making comments on forums. 

Or am thinking about Normandy 1944...?

   Stuart

[Khriss]

1 minute ago, Ty Korrigan said:

In the past, owners of German tracked machines would have just denonated charges, blowing them up so competitors couldn't poke around making comments on forums. 

Or am thinking about Normandy 1944...?

   Stuart

you are indeed correct Stuart , most bigger tanks had demolition charges fitted ( although a few Panthers were caught and used by the British ) our version of this was called the Sherman , which blew itself up , most times ( unfortunately with our trooops in it )  K

[htb]

21 minutes ago, Khriss said:

you are indeed correct Stuart , most bigger tanks had demolition charges fitted ( although a few Panthers were caught and used by the British ) our version of this was called the Sherman , which blew itself up , most times ( unfortunately with our trooops in it )  K

tommy cookers

[Khriss]

3 minutes ago, htb said:

tommy cookers

Yup - the original name for the biscuit tin petrol stoves in the Desert . K