Faulty blade bolts...

[john87]

Just now, htb said:

What did you google, a M8 8.8 bolt or a 10.9 one as different torque figures for each.

Lots of different ones..

 

The figures given are for lightly lubricated bolts. With grease of copper slip you want about 25% less so if the bolts are grade 10.9, so far so good, BUT a low head bolt [like timberwolf use] is nowhere near as strong and you would only be looking at 22 Nm and less with the grease...

 

Metric Bolts - Tightening Torques

WWW.ENGINEERINGTOOLBOX.COM

---

Typical maximum recommended thightening torques for metric bolts

 

 

[john87]

3 minutes ago, roboted said:

Manufacturer spec should give torque and lube condition 

They do! [and it is much higher than the bolt makers say...]

 

john..

[roboted]

8 minutes ago, john87 said:

They do! [and it is much higher than the bolt makers say...]

 

john..

Speak to them then.

[john87]

16 hours ago, htb said:

How blunt were the old blades?

I have never had a chipper before and never used one so i do not know what you would call blunt or normal blade wear. Anything not like a razor i would think wanted sharpening, as same as all cutting tools, it is better to take off a little often than loads later.. Here is a photo of the old blade on top of the new one so you can see wear and the edge of the thing too. Does this all look normal??

 

john..

 

[Conor Wright]

4 hours ago, john87 said:

I have never had a chipper before and never used one so i do not know what you would call blunt or normal blade wear. Anything not like a razor i would think wanted sharpening, as same as all cutting tools, it is better to take off a little often than loads later.. Here is a photo of the old blade on top of the new one so you can see wear and the edge of the thing too. Does this all look normal??

 

john..

 

I've seen worse but that should have been sharpened long ago.

[Stubby]

On 26/07/2021 at 13:57, Conor Wright said:

I've seen worse but that should have been sharpened long ago.

Yea I have seen worse . Bit like does my power mate sprocket need changing 🙂

[openspaceman]

3 hours ago, Stubby said:

Yea I have seen worse . Bit like does my power mate sprocket need changing 🙂

No that's well blunt and power mate rims go on a long time after you'd want to change them 🙂

[john87]

35 minutes ago, openspaceman said:

No that's well blunt and power mate rims go on a long time after you'd want to change them 🙂

Do they usually look like that or have the last owners been putting roots and stuff through there??

 

What is the thinnest stuff a chipped will deal with?? Could i put a hydranger bush in there or is there not enough wood and too much stalky green bits??

 

john..

[openspaceman]

5 minutes ago, john87 said:

Do they usually look like that or have the last owners been putting roots and stuff through there??

 

What is the thinnest stuff a chipped will deal with?? Could i put a hydranger bush in there or is there not enough wood and too much stalky green bits??

 

john..

What normally happens is at the end of a job there is a pile of rakings up to dispose of, sometimes on the nice pea shingle drive at the front of the house where the job was. It should be kept separate  and on the truck but...

 

Dirty wood will do less damage than pea shingle but still blunt is blunt.

 

A sharp chipper with the anvil set correctly and not worn will deal with hydrangea, raspberries, hops, bramble etc, but have a sacrificial pusher stick available.

[john87]

When you say about setting the anvil. Why is it that timberwolf say to return the machine to them for them to fit a new anvil.. What is so hard about fitting one??

 

Further to the broken bolts in my first post in this thread, timberwolf ignored my email to them, but the new bolts i ordered were of a different design to the originals, so there is a story there..

 

john..