Stuff you have made today

[Turbo]

The (in)famous hay rake (https://www.mig-welding.co.uk/forum/threads/stuff-you-have-made-today.67127/page-646#post-1685885) has done a couple of seasons, but the PTO shaft expired with prejudice recently, when a universal joint gave up. It has seen a lot of life in the past. One of the tine holders that hold the spring tines also fell off from a combination of fatigue and rust, and some of the return springs that lift the tines up have broken.

Got another PTO and pulled the broken tine holder off and the ones with the broken spring. There is a plastic bush that had flogged out, and the tine holder shaft has severely worn and bent. I priced up some new ones - $NZ27.50 each = 13.50 pounds! I thought I ordered a replacement for the broken tine holder but forgot to have it in the shopping cart on the online order.
Looking at tine holders on the weekend, and the condition of the others, there was no way I was paying for 20 new ones so it was time to fire up the forge. They are a L shape, with a 16mm shaft with a bend in the end. The bend matches a curved piece of flat that matches the curve of the tine coil spring. This piece also has a flat area for the tines to bolt onto and they are welded together at an angle.
Bars in the gas forge
View attachment 368694
Offset the end and form a curve over the horn of the anvil
View attachment 368697View attachment 368696

Curve the flat bar
View attachment 368698
Drill the bolt hole and use a punch with a pilot to form the flat area
View attachment 368699

Made a scratch built jig using the existing tine and guesswork for the dimensions
View attachment 368700
Drill another hole for a roll pin that anchors one end of a return spring, slop paint onto it and bolt in place. Only 19 more to go
View attachment 368701View attachment 368702


I wish I had a 3D printer, as the plastic bushes are expensive for what they are and lightweight, and i am sure I could 3D print a better one for next to nothing.

Is that a Haybob by any chance?

 

[Geoffm]

Is that a Haybob by any chance?

Yes. I think it is a PZ 200. It is "very experiened" and has seen a lot of life over 50 years or more.
Where the tine holders fit into a hole on the end, some have ovalled out so I may have to do some welding to build them up to somehwere near round.

 

[Turbo]

Yes. I think it is a PZ 200. It is "very experiened" and has seen a lot of life over 50 years or more.
Where the tine holders fit into a hole on the end, some have ovalled out so I may have to do some welding to build them up to somehwere near round.

Nearly every farmer around here had a haybob, brilliant hay tedder & their light weight was well suited to use on small tractors like MF 35's. But as you discovered that leaves them a tad fragile & prone to wear.
My dad had a pottinger haystar, similar design, worked just as well but much more strongly built.

 

[T5 TDI]

Foam filled fuel tank in 3mm

Very nice. How do you complete the welding once the foam block is in place? Filled with liquid? Surely that would take heat away from the weld?

Obviously yer man there is as amazed as I am..

 

[slim_boy_fat]

A holder for the grinders

Very neat!

 

[Cheesie]

Very nice. How do you complete the welding once the foam block is in place? Filled with liquid? Surely that would take heat away from the weld?

Obviously yer man there is as amazed as I am..

View attachment 368715

Thankyou normally I'll go up a cup size for 3mm outside corners but I stuck with a 5 this time on some parts there's little to no etch but you run the risk of introducing dirt in the puddle I cut the corners of the foam where it's to be welded never tried it with the foam intact but I'd say it would be a mess

 

[MattF]

Very neat!

Cheers.

 

[minimutly]

Foam filled fuel tank in 3mm

View attachment 368569 View attachment 368570 View attachment 368571 View attachment 368572 View attachment 368573 View attachment 368574 View attachment 368575

Nice. What goes on here:
Looks like you’ve left gaps?

 

[Kram]

I think that is initial tacking. The tank looks bloody good tbh.
What sort of foam is it, to be fuel/petrol resistant?

 

[500e]

FIA Compliant Yellow Foam (Petrol & Diesel) 22x22x21cm 10L Block - OBPFOAM3 | eBay UK

We have various sizes available that include: off cuts (various sizes), 22x22x21cm 10L blocks or the 10x10x10cm 1L blocks. FIA Compliant Yellow (Polyester) Foam Suitable for Petrol & Diesel. FIA Compliant Foam.

www.ebay.co.uk

If really interested

An Alternative Technology for SFAR 88 Fuel Tank Safety?

And scroll down to Technical products.
There is also a SS product like Mesh

https://www.valpro.lv/Admin/assets/js/ckfinder/userfiles/_uploads/Explosafe%20cans0.pdf

 

[striker]

Finished my lead screw today. Made a bearing pre load nut and a tab and keyway slot in my new longer lead screw.
Ready to fit back to the knee in my mill.
I was going to use the old nut, but it goes on at about 30°. The bearings will have been loaded and unloaded on each revolution.

 

[My Old Landy]

Finished my lead screw today. Made a bearing pre load nut and a tab and keyway slot in my new longer lead screw.
Ready to fit back to the knee in my mill.
I was going to use the old but, but it goes on at about 30°. The bearings will have been loaded and unloaded on each revolution.View attachment 368749View attachment 368750

Superb job, better than a commercial one

 

[striker]

Superb job, better than a commercial one

Thank you. I was apprehensive about doing it, but I thought for £20 for the steel, it's no great loss if I mess it up. I'm very pleased with the way it's turned out and I've learned a lot along the way.

 

[Cheesie]

Nice. What goes on here:
Looks like you’ve left gaps?

View attachment 368742

Plenty of tacks not needed as much on 3mm but on 2 and below one plate has the tendancy to pull away from the other

 

[Hood]

Got a start on the hopper this afternoon, progress was good but it always looks a lot the first day and then things slow down as the full seam welding starts
Thankfully I was able to borrow some space in a big shed as the weather here at the moment is not conducive to welding outside.

 

[nickk]

7 handrails installed,then 8 more ordered last week ,tis the season.

 

[slim_boy_fat]

^^ If I was the owner, I'd trim back that living trip hazard in the last pic.

 

[dan.taylor.1]

^^ If I was the owner, I'd trim back that living trip hazard in the last pic.

I often do it for customers when I install handrails, siting I needed the room to set posts or whatever!

 

[MattF]

Made the other day. A holder for the 12V Flexiclick heads. Shoved the grinder handles in there too. 36mm drill too small, 38mm too large, so holes done with the 36mm, then opened up with the bobbin sander.



Used a Sabrecut spade bit. Impressed with those spade bits, & I've never really been a fan of spade bits.

 

[Woody.v8]

Some new nylon rollers for the truck bed ,the old ones were past best.