Rear coil shock reconditioning....

[Entertwainer]

got myself some spare rear shocks for my CG.
the coils have paint peeling and some surface rust (rest of shock is in OK state and functions/rebounds and compresses well).
would like to get them apart and give the coils a good cleaning up/repainting.
has anyone got one of these apart?
looking at this tool to help with coil removal:

https://www.ebay.co.uk/itm/360625592992?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

anyone used something like this?
will it explode in my face?
not fussed about the fact that it costs as much as a 2nd hand pair of shocks (which will most likely be in a similar condition anyway).....
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Honda CG 125 W - Turkish - 1998 - 2015 RIP

[Vincent]

Should be ok....but you can get similar for a lot cheaper, esp used ones. You only need to take the stress off the collets....if that's how your shock is held together.
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Space Is Deep

[Vincent]

Here yee go:-

www.ebay.co.uk/itm/Spring-Compressor-kit-Suspension-Coil-Spring-Strut-Compressing-tool-Shocks-/161261038023?pt=UK_Hand_Tools_Equipment&hash=item258be829c7
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Space Is Deep

[Entertwainer]

they look like they'd do the job - no info on the width of those hooked parts - do these things come size specific (i.e/ for cars and motorbikes) as i'd imagine the tool size would vary due to coil size...???
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Honda CG 125 W - Turkish - 1998 - 2015 RIP

[Vincent]

Most coils, bikes and cars are pretty similar diameter, themn hooks should have about an 8mm tolerance. Once tightened, they're not going anywhere.

I've just been looking for a pic I had of a home made shock dismantling tool made out of a few bits of steel and a bottle jack but can't find it
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Space Is Deep

[pdg]

[Vincent]

OP....the compressors that are made for cars will be oversize for bikes so should work fine, it's the other way around you may have problems. You can always get the grinder out if they won't fit inbetween the coils.

If stockpiling loads of expensive tools to admire and polish isn't your bag, you could maybe knock up one of these:-

https://i77.photobucket.com/albums/j71/Drewskovitch/Jap%2070s%20bike%20toys/Bike%20toys/imagesqtbnANd9GcRJqqX2JvIKzibE_Tdys_zps0582d111.jpg
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Space Is Deep

[pdg]

The second type of spring compressor linked is designed to be used on car springs. It has double hooks on each jaw. You won't be able to get both hooks onto a bike spring because of the curvature of the spring, so it'll be just the one.

So it'll twist and the leadscrew will try to bind, which will try and pull the hook off the spring.

Then, because you have had to grind 80% of the hook off to get it in between the tiny coils on a bike shock in the first place (plus the fact small bike springs are relatively weak anyway) the twisting will need to do much less work to go ping and fire the compressor (hopefully) over your shoulder.....


But hey, what the very fuck do I know about it? I haven't made enough posts to know anything. Best of luck.



That cobbled together one in the picture will be far superior to fucking around with a car spring compressor btw.
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Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[Vincent]

[pdg]

A lot of the cheaper ones have cast rather than forged or machined hooks, poorly cast at that. I wouldn't cut or bend one of those myself (well, not again at least........)
____________________
Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.