Chassis Galvanising

mick 1986 said:

His son used to do all the collections and deliveries to us, so it was him I spoke to. I think it’s Martin that owns the place isn’t it? He said they do a few per year for it, so I thought it would be ok and a decent plan. It wasn’t until I started the chassis work that I gave up on the idea. My chassis was the original, so a 91-92 built item. How old is yours?

I pick my galv chassis up tomorrow, eventually, so will start the rebuild on Friday! Can’t wait, it’s been sat dormant for the last 4-5 weeks.

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Mine is 1987, but I suppose some are better then others, anyway will check before. Good luck with yours, Mine will be a very long process as don't really have much spare time, but I do have both axles just about fully rebuilt so should get a good start on getting it rolling.
As mentioned in one of our earlier conversations you are welcome to come and have a look if your up my way.

Hippo said:

Get yerself a usb drain camera to poke int side before and after the sand blast to check the condition.

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Seen these in Aldi the other week cant remember how much they were but they were cheap, might have a look tomorrow.

border said:

Mine is 1987, but I suppose some are better then others, anyway will check before. Good luck with yours, Mine will be a very long process as don't really have much spare time, but I do have both axles just about fully rebuilt so should get a good start on getting it rolling.
As mentioned in one of our earlier conversations you are welcome to come and have a look if your up my way.


Seen these in Aldi the other week cant remember how much they were but they were cheap, might have a look tomorrow.

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Good luck with it. If your ever around Bishop, drop me a message.

The new shifts I’m on, allow me more time than I realised for working on mine, so I have fallen on my feet with it.

I haven’t really touched the axles, just replacing all brake lines from master to each wheel station, and breathers. The way I’m looking at it is, they were fine before April, so should be good for a few Kmiles yet (hopefully).

mick 1986 said:

Good luck with it. If your ever around Bishop, drop me a message.

The new shifts I’m on, allow me more time than I realised for working on mine, so I have fallen on my feet with it.

I haven’t really touched the axles, just replacing all brake lines from master to each wheel station, and breathers. The way I’m looking at it is, they were fine before April, so should be good for a few Kmiles yet (hopefully).

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I come to Bishop every Wednesday, drop off at the Hospital around 8 in the morning and pick up about half 3, we can sort something out one day.

Ive galved plenty of used chassis, but not all chassis are worth doing.
If the main rails are full of crud, i wouldn't bother. To find out, cut a hole about 2 inch square at each end or the main rails, prop it up against a wall length wise, and run a powerwash (or one of the jet washers for drain clearing) down the inside from above, it will also washout the shotblast.
If it's good enough, ask the galvanisers to leave it for as long as possible in the acid bath, as it will allow for more of the internal rust to be broken down.
Fill it with some cavity sealer afterwards.

Spoke to the shotblast company again and this is what they will do before going to Galv Company
Blast the chassis down to an S/A 2.5 spec which the galvanize company will want and put the blast hose in any open areas to loosen up the internal rust, this requires a double blast one with a grade 3 expendable abrasive and polish of with a grade 1 expendable abrasive to achieve the 2.5 spec

border said:

Spoke to the shotblast company again and this is what they will do before going to Galv Company
Blast the chassis down to an S/A 2.5 spec which the galvanize company will want and put the blast hose in any open areas to loosen up the internal rust, this requires a double blast one with a grade 3 expendable abrasive and polish of with a grade 1 expendable abrasive to achieve the 2.5 spec

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What diameter , flexibility is that hose.??....OOohhheeeer!!!

Having washed mine out today, getting even a normal garden hose into the holes and up the chassis is interesting.

Cheers

If you’ve got a main brand pressure washer ( Karcher; Nilfisk; Stihl etc ), you can get a drain cleaner attachment like the one below. I haven’t used one on a chassis before, but it should do a good job of blasting out internal muck.

This video shows the power of the drain cleaners:

bluedog333 said:

If you’ve got a main brand pressure washer ( Karcher; Nilfisk; Stihl etc ), you can get a drain cleaner attachment like the one below. I haven’t used one on a chassis before, but it should do a good job of blasting out internal muck.
View attachment 165787

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If you take your pressure washer to the outside of the chassis and give it a good blast, the result is quite different to a shot blasted finish. Obviously, otherwise noone would bother with shot blasting...

If the chassis has ever had cavity wax sprayed into it, I'm not too confident as to how pressure washing would sort it out.

If it's just clearing mud and grime, then a water spray would probably be good enough - then the acid dip at the galvanisers would hopefully do the rust.

julianf said:

If you take your pressure washer to the outside of the chassis and give it a good blast, the result is quite different to a shot blasted finish. Obviously, otherwise noone would bother with shot blasting...

If the chassis has ever had cavity wax sprayed into it, I'm not too confident as to how pressure washing would sort it out.

If it's just clearing mud and grime, then a water spray would probably be good enough - then the acid dip at the galvanisers would hopefully do the rust.

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I appreciate that, I was really responding to Neilly’s post above mine regarding using a garden hose to clean the inside of a chassis, not specifically prior to galvanising, just general clearing the muck out of a regular chassis. I should have quoted to make that clearer.

bluedog333 said:

If you’ve got a main brand pressure washer ( Karcher; Nilfisk; Stihl etc ), you can get a drain cleaner attachment like the one below. I haven’t used one on a chassis before, but it should do a good job of blasting out internal muck.
View attachment 165787

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bluedog333 said:

I appreciate that, I was really responding to Neilly’s post above mine regarding using a garden hose to clean the inside of a chassis, not specifically prior to galvanising, just general clearing the muck out of a regular chassis. I should have quoted to make that clearer.

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Yes may work for cleaning the chassis using a pressure washer, I have even thought about getting one.

But In the post previous to your response, I was asking about the shot blasting hose @Borders post, which from what I have seen is not such a small bore hose.

Cheers

neilly said:

Yes may work for cleaning the chassis using a pressure washer, I have even thought about getting one.

But In the post previous to your response, I was asking about the shot blasting hose @Borders post, which from what I have seen is not such a small bore hose.

Cheers

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Yeah yeah and his post was responding to...
Try and be helpful round here and this is what I get, I’m off to cry with that guy from AG, not going to mention any names...

neilly said:

Yes may work for cleaning the chassis using a pressure washer, I have even thought about getting one.

But In the post previous to your response, I was asking about the shot blasting hose @Borders post, which from what I have seen is not such a small bore hose.

Cheers

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I'm Sure they know what they are doing as it is a Professionals Company, and have done chassis before.

border said:

I'm Sure they know what they are doing as it is a Professionals Company, and have done chassis before.

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Sounds good, are you going to review it after blasting to make sure it has not found any extra holes? before it goes to galving?

Cheers

Completely Bare now ready for blasting, It really is a decent chassis for its age, just surface rust, on photos hopefully the same inside, so hoping I will not find any extra holes when it comes back, if I do then at least it will be easy to weld them up.

Which one of these should I be using ? One of my downfalls is that I did not dismantle the whole vehicle, They both came with it but not of them were fitted.
Both the same size and holes line up.

border said:

Which one of these should I be using ? One of my downfalls is that I did not dismantle the whole vehicle, They both came with it but not of them were fitted.
Both the same size and holes line up.

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My new galv one is the same as the one closest your wellies/feet, in the first photo.

border said:

Which one of these should I be using ? One of my downfalls is that I did not dismantle the whole vehicle, They both came with it but not of them were fitted.
Both the same size and holes line up.

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On the second photo, is the one at the top the same as the top one in the first photo?

mick 1986 said:

My new galv one is the same as the one closest your wellies/feet, in the first photo.

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Thanks Mate that ones a better fit, just so I know which one to send with chassis,

border said:

Thanks Mate that ones a better fit, just so I know which one to send with chassis,

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If the same one is on the top in both photos, that’s the one.