citric acid.......update it works with pictures

[Moza]

anyone suggest the mix ratio and time for the item to be left in the solution please

[Threaders]

I tried this on a mongoose frame with a bit of rust. did sod all though. Left it in for two days cant remember the exact ratio was around 2 table spoons per litre. there is a lot of threads on this topic on www.bmxmuseum.com

[oldschoolace]

Use it all the time and its the best stuff you can use. 
Usually i do around a 20/1 ratio of water to cap and it will take surface rust off over night. For heavier rust you need to leave it longer and give the item a scrub a few times with a brush.

wilkinsons do little 50g tubs for 97p or you can get it at any home brew supply shop

Even a really weak solution will work, it just takes longer. You just have to weigh up time vs cost 

[Moza]

Use it all the time and its the best stuff you can use. 
Usually i do around a 20/1 ratio of water to cap and it will take surface rust off over night. For heavier rust you need to leave it longer and give the item a scrub a few times with a brush.

wilkinsons do little 50g tubs for 97p or you can get it at any home brew supply shop

Even a really weak solution will work, it just takes longer. You just have to weigh up time vs cost 

Thanks its a big tub so im using it all lol.......does it attack chrome

[glenboy]

coca cola rubbing it in with tin foil is the best moza , or vinegar with salt in depending on amount of rust and size of item but coke and tin foil gets amazing results makes you think whats coke doing to your insides

[58 delray]

i have a whole frame that needs doing, any recomendations?

[oldschoolace]

Pound shop paddling pool, citric acid, take up excess room around the frame with pop bottles full of water to save on the amount of citric acid you need. Dunk it in and let chemistry do all the work 

[oldschoolace]

Thanks its a big tub so im using it all lol.......does it attack chrome

Chrome and decals will be fine 

[58 delray]

Pound shop paddling pool, citric acid, take up excess room around the frame with pop bottles full of water to save on the amount of citric acid you need. Dunk it in and let chemistry do all the work 

a lot  of rust so how much acid ?

[oldschoolace]

Well the pool i had was about 1.2 meters diameter, distorted into a slight oval to fit the frame. I think i used about 500g of citric acid and tried so save on the water usage by filling the gaps with bottles as i said. I had to scrub the inside of a gusset with a toothbrush to clear the surface debris but the acid did all the work. Ended up throwing most of the other parts in there for good measure.

Its great for cleaning rusty threads and difficult to reach areas and doesn't seem to lose its potency so you can use it again and again. Much cleaner, safer and less smelly than the alternatives 

[hotdog]

Any before & after pics?

[wildon]

I bought this half kilo from ebay  http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170572693487#ht_500wt_922

Filled the bath up enough to cover the frame with hot water and chucked the lot in.  Left it all day while i was out.  It took of a lot of the surface rust but tbh the chrome was shot on the frame and what you can still see is where the chrome has gone completely.  Would imagine it'd work well on slight surface rust but next time i'll just get out the coke and tin foil again.

Didn't harm the bath at all.

[Moza]

I tried it out today and saw results within 20mins, the rust fizzed away and i could smell a hydrogen type smell coming from the bucket !!!!



in it goes



you can see the rust at the bottom of the bucket






gone

[Moza]

A Big thanks to all those who helped and gave suggestions

[Rodgy1970]

Nice one, will have to try it out   

[MartyC]

that's come up great, now get those resto pis of your RST out 

[Moza]

that's come up great, now get those resto pis of your RST out 

Ive over 1000 and dont know where to put them lol