Topic: Oh dear ...

[69cb750]

When you think you have seen everything ... you have not.

[Stev-o]

When you think you have seen everything ... you have not.

I would never say that!!!   Oil tank, right?

[PeWe]

JB Weld will fix that

[Deltarider]

Would any of you be so kind to explain what this JB Weld stuff is (pics?)? It has been mentioned in this forum many times and I still know what it is, consists of and if there possibly is a variety of JB Weld products (like Loctite has various products). I'm convident there is a European equivalent, but as of now, I don't know where to start looking. Appreciated.

[jaytee-nz]

Delta - check these out. It's sold in New Zealand so it must be available in Holland !
https://www.jbweld.com/products

[robvangulik]

I haven't seen it here either, but it is a plastic metal, I have used Weicon plastic metal several times.(vloeibaar staal )

[pjlogue]

Would any of you be so kind to explain what this JB Weld stuff is (pics?)? It has been mentioned in this forum many times and I still know what it is, consists of and if there possibly is a variety of JB Weld products (like Loctite has various products). I'm convident there is a European equivalent, but as of now, I don't know where to start looking. Appreciated.

It is a two part epoxy.  the base has metal powder and it is mixed 1:1 with a cream colored hardener.  Once cured it is impervious to any solvents that I know of.  It is very strong and will adhere to just about anything other than flexible plastics.  it can be machined, drilled and tapped.  I have used it to fill  in rust divots in anti-sway bars on cars, repair stripped out threads in engines and fill in missing chunks of metal parts.  Very versatile product!  The only thing I would not use it for is a high heat application. 

-P.

[Oddjob]

There is a high heat version pjlogue. I've got some somewhere.

[PeWe]

We had mostly this before.  Harden in 10-15 minutes.
https://www.tridentuk.com/gb/product-plastic-padding-chemical-metal-210g-md171297.html

I repaired a leaking alternator cover to my K6 with it. The cover had said hello to the asphalt several times.  Leaned bike to a wall, cleaned with acetone and epoxy on.
Used the bike 20 minutes later. I had this stuff in the luggage on longer tours.

Standard JB Weld epoxy need longer time to harden but is better. It is thinner and is rinny before hardening.
Our importer mentioned shelf life of 25 years...

[jlh3rd]

Would any of you be so kind to explain what this JB Weld stuff is (pics?)? It has been mentioned in this forum many times and I still know what it is, consists of and if there possibly is a variety of JB Weld products (like Loctite has various products). I'm convident there is a European equivalent, but as of now, I don't know where to start looking. Appreciated.

this is the original JB weld that gets the highest ratings compared to even other jb weld products

[jlh3rd]

When you think you have seen everything ... you have not.

since that is a rusted area you might want to take a look at POR-15 products made specifically to adhere to rusted metal. They make a crack sealer and a 2 part putty.
FWIW, the original JB weld tested stronger than the POR 15 putty but how well does jb weld stick to rusted metal?

[rotortiller]

If it were me I would braze or weld in a patch seeing that it is steel. JB Weld has its place but that is not one of them. Generally it is used as a cheap low skill repair often plastered over broken aluminum castings. Since you have access to the tank by removing it, it can be cleaned  and welded or easily replaced with a junked item. JB Weld is not structural, more like epoxy body filler. The fitting for the oil line looks weak, a correct patch can correct that.

[69cb750]

If it were me I would braze or weld in a patch seeing that it is steel. JB Weld has its place but that is not one of them.

Yes

it can be cleaned and welded or easily replaced with a junked item.

Will get patch from 71 tank, weld on 69 tank.

[The Lone Builder]

Would any of you be so kind to explain what this JB Weld stuff is (pics?)? It has been mentioned in this forum many times and I still know what it is, consists of and if there possibly is a variety of JB Weld products (like Loctite has various products). I'm convident there is a European equivalent, but as of now, I don't know where to start looking. Appreciated.

Look here: https://www.amazon.nl/s?k=JB+weld&ref=nav_bb_sb

[69cb750]

I would never say that!!!

I continue to be surprised by things I find on old bikes.

   Oil tank, right?

Yes

[bryanj]

I think the nearest to JB would be Araldite in europe, for plastic metal in various metals Devcon but that is pricey, used a lot of that as sea in merchant navy

[69cb750]

The rest of the story ...
I was testing the bike.
Ride up and down my street, everything ok.
Ride out Ravine road to D ave and home, 14 miles, everything ok.
2nd trip out to D ave oil light comes on, I stop, oil on tire, wheel, dripping off exhaust pipes.
Get tool kit out, try to tighten return line nut, nut already tight.
A very nice man 25 to 30 years old stops and asks if he can help.
Yes, two quarts of oil please, he returns with oil, refused to take any money.
7 miles home, lost 1.8 quarts of oil.
Next day removed tank and found rust, poked through rust with screw driver.
Tank held oil 14 miles then hot oil broke through rust.
I have had several roadside adventures through the years, first time for this problem.

[PeWe]

Sweden has an importer that has the JB Weld products.
https://navx.store/product-category/jb-weld/

JB Weld product portfolio seems to grow at every visit.
https://www.jbweld.com/product/j-b-weld-tankweld

I should also find a welder that could fix it properly.

[Don R]

  Often the JB weld option is a real suggestion, other times it is offered as sarcasm. The trick is to know which time it is now.
  If you lived down the street, I'd bring a tank over for you to keep. Shipping that far might not make sense. 

[Stev-o]

The rest of the story ...
I was testing the bike.
Ride up and down my street, everything ok.
Ride out Ravine road to D ave and home, 14 miles, everything ok.
2nd trip out to D ave oil light comes on, I stop, oil on tire, wheel, dripping off exhaust pipes.
Get tool kit out, try to tighten return line nut, nut already tight.
A very nice man 25 to 30 years old stops and asks if he can help.
Yes, two quarts of oil please, he returns with oil, refused to take any money.
7 miles home, lost 1.8 quarts of oil.
Next day removed tank and found rust, poked through rust with screw driver.
Tank held oil 14 miles then hot oil broke through rust.
I have had several roadside adventures through the years, first time for this problem.

Not sure I understand, is this about the square four bike??

[69cb750]

Not sure I understand, is this about the square four bike??

No, was testing 69 CB750 when oil tank failed.
Making progress on protype, posted clutch photo today, not ready for road testing.

[Stev-o]

Not sure I understand, is this about the square four bike??

No, was testing 69 CB750 when oil tank failed.
Making progress on protype, posted clutch photo today, not ready for road testing.

Got it.  The oil tank failure and the pic of the rusted oil tank confused me.

[MauiK3]

I would be concerned about how much rust is on the inside and can't be repaired without welding in a new patch on the bottom.