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Schakal
27-08-2009, 07:32
does anyone know what sort of lathe this is with the open type TAIL STOCK thingy ?

http://i66.photobucket.com/albums/h241/renaultparts/hpim1078or4.jpg


i am trying to get a pair of front shock piston rods shortened but every metal workshop i have been to is saying because of the bottom mounting brackets
the shock absorber body can not be secured in the lathe :crap:

Arrows
27-08-2009, 09:18
Would it not be an easier option to buy some new shocks with the work already done and also cheaper?

The shock would also be designed for a shorter shaft as well.

Just a thought?

Schakal
27-08-2009, 09:24
Would it not be an easier option to buy some new shocks with the work already done and also cheaper?

The shock would also be designed for a shorter shaft as well.

Just a thought?


thats not available of the shelf as far i know mate :crap:

Arrows
27-08-2009, 09:28
thats not available of the shelf as far i know mate :crap:

OH OK how low are you looking to go and on what setup?

I had mine custom made by Koni some years ago, not sure if they offer the same service, must say the quality is second to none but you do pay a little for it and at least the shock is properly designed with everything uprated.

Ashy
27-08-2009, 09:54
does anyone know what sort of lathe this is with the open type TAIL STOCK thingy ?

http://i66.photobucket.com/albums/h241/renaultparts/hpim1078or4.jpg




Its just a std small flatbed centre lathe... Thats not the tailstock its a steady.

Schakal
27-08-2009, 09:55
OH OK how low are you looking to go and on what setup?

I had mine custom made by Koni some years ago, not sure if they offer the same service, must say the quality is second to none but you do pay a little for it and at least the shock is properly designed with everything uprated.

koni is da shizzle indeed :agree:
what actually did they custom build and how much did it cost you ??
did you get to choose the shaft length ,spring size rating etc ??

my problem is the springs i am wanting to use, they are slightly loose
between the top and bottom spring cups and getting the rod shortened about
20 mm will sort this problem .

T.K
27-08-2009, 10:09
Gaz might be able to help you. Ex-leda. :agree:

Arrows
27-08-2009, 10:18
koni is da shizzle indeed :agree:
what actually did they custom build and how much did it cost you ??
did you get to choose the shaft length ,spring size rating etc ??

my problem is the springs i am wanting to use, they are slightly loose
between the top and bottom spring cups and getting the rod shortened about
20 mm will sort this problem .

I had front and rears custom made with uprated rebuild and shortened shafts and then the internals uprated for this, now we are talking a few years back now and i can not remember the costs 100% and would not like to guess, i am sure its a lot cheaper now as most people at the time just lowered there cars on standard shocks as there was not much choice around at the time.

As for your setup if your only talking being short by 20mm could you not wire ring the spring to the shock base cup when you take the shocks off the springs will stay in place, maybe a cheaper option for you.

Arrows
27-08-2009, 10:19
koni is da shizzle indeed :agree:
what actually did they custom build and how much did it cost you ??
did you get to choose the shaft length ,spring size rating etc ??

my problem is the springs i am wanting to use, they are slightly loose
between the top and bottom spring cups and getting the rod shortened about
20 mm will sort this problem .

Sorry forgot to say yes i could choose everything but also spoke to them for there expert advice.

Schakal
27-08-2009, 10:48
I had front and rears custom made with uprated rebuild and shortened shafts and then the internals uprated for this, now we are talking a few years back now and i can not remember the costs 100% and would not like to guess, i am sure its a lot cheaper now as most people at the time just lowered there cars on standard shocks as there was not much choice around at the time.

As for your setup if your only talking being short by 20mm could you not wire ring the spring to the shock base cup when you take the shocks off the springs will stay in place, maybe a cheaper option for you.


that probably would cost in the region of 1k , i remember an ex member on here
had customs ledas made for his r1 turbo and they were a tad over £1k :eek:

i have actually used jubilee clips securing the springs to the cups
but i am not happy with that , i want the spring to be compressed by
both cups at all times .

Arrows
27-08-2009, 10:55
that probably would cost in the region of 1k , i remember an ex member on here
had customs ledas made for his r1 turbo and they were a tad over £1k :eek:

i have actually used jubilee clips securing the springs to the cups
but i am not happy with that , i want the spring to be compressed by
both cups at all times .

I think they were more then that i am sure i seem to have a figure around 1300.00 comes to mind but we are talking a number of years ago so they may well be cheaper now, i would have to find the receipt in my pile to be 100%, at the time it transformed the handling and ride of my 5.

Arrows
27-08-2009, 10:57
that probably would cost in the region of 1k , i remember an ex member on here
had customs ledas made for his r1 turbo and they were a tad over £1k :eek:

i have actually used jubilee clips securing the springs to the cups
but i am not happy with that , i want the spring to be compressed by
both cups at all times .

If your talking a drop of only 20mm there must be a off the shelf shock that does this for the 5 by now surely, most if not all 5's get dropped at some point.

Spooky
27-08-2009, 11:05
You want to lower the car for handling purposes yea ?

Have you thought about retaining the height as it is and looking into getting custom springs ?

Surely thats cheaper than going completely custom. The springs can be made to your own spec too.

Lowering the car or going for a firmer spring is surely going to give similar results...

Scoff
27-08-2009, 15:58
in that picture the body is clamped in a steady, not a tail stock. I have one for my lathe, not sure I could get a complete damper in it though!! sounds more likely the engineers just couldn't be bothered!

Scoff
27-08-2009, 16:00
oops, ashy beat me to it.

raj
27-08-2009, 16:38
speaking of lathes,, does anyone have any ideas on a cheap n cheerful single standing unit that i could fix alloy wheels to? told help with polishing etc. i know i can jack the car up,fit the wheel to the car and run the engine in gear to do this, but im not fond ive doing it this way all the time

Schakal
27-08-2009, 16:46
sorry for late reply guys .

ARROWS , its for a renault 9 mate , hard to find stuff off the shelf .
renault 19 and megane shocks will fit but due to where the bottom
mounting plate is welded on to the shock tube on these cars ,it sits
15-20 mm higher without even starting :crap:

SPOOKY , yes mate the idea is good handling more than looks .
i dont want to look into custom springs for the simple reason that
i have no fokkin idea what the best specs for my car would be .
but eventually i want to retro fit a decent setup from another car when
i know what the fox going on :scratch::laugh:


SCOFF , the last guy i have spoken to seemed quite bothered to me tbh .
he had about 5-6 lathes in the workshop and he said i would need to
dismantle the shocks and hand him the piston rods in order for him to do it
which is not an option really :crap:
is this "steady" thingy a seperate tool from the lathe ?
what shall i ask for when i ring places ?

Scoff
27-08-2009, 19:20
maybe the engineer didn't realise he would be able to clamp the body steady and just stick the rod in the chuck, did you explain that it rotates in the body ? Not sure, but I think he'd have to be cautious with regard to speed, too fast might mean that the seals cant lube and may overheat. Just a guess, think I'd be cutting pretty slowly.

Schakal
27-08-2009, 19:52
i am pretty sure he said he wont be able to do it as the bottom mounting
brackets and spring cup wont go into the lathe .

scoff , can you see any downsides to shortening the piston rod about 20mm max ?
all i can think of is it wont be able to bottom out .

Scoff
27-08-2009, 19:53
no harm in my mind, I aught to do the same with mine, currently using helper springs instead.

Ashy
27-08-2009, 21:21
maybe the engineer didn't realise he would be able to clamp the body steady and just stick the rod in the chuck, did you explain that it rotates in the body ? Not sure, but I think he'd have to be cautious with regard to speed, too fast might mean that the seals cant lube and may overheat. Just a guess, think I'd be cutting pretty slowly.

The steady should have 3 rollers which would allow the body of the shock to roate with the rod so there would be no risk of damage to the seals.

Schakal
27-08-2009, 21:34
no harm in my mind, I aught to do the same with mine, currently using helper springs instead.

cool :agree:

you are running a heavier engine than before like i do ,
have you uprated front shocks or running standard 1.4 turbo coilies ?

i have compared a renault 19 16v front shock to my standard 1.7 gtx one
the 16v one has a 52mm diameter where as the gtx one measures 45mm .
i am running very similar weight to 19 16v at the front ,you reckon
i should work on running some beefier shocks ?

Scoff
27-08-2009, 22:07
cool :agree:

you are running a heavier engine than before like i do ,
have you uprated front shocks or running standard 1.4 turbo coilies ?

i have compared a renault 19 16v front shock to my standard 1.7 gtx one
the 16v one has a 52mm diameter where as the gtx one measures 45mm .
i am running very similar weight to 19 16v at the front ,you reckon
i should work on running some beefier shocks ?


I don't think you can read into the diamater of the damper tube, there is more to it than that. Maybe I missed what you were asking though ?

I have adjustable damping with 2.25" springs on my car.

Schakal
27-08-2009, 22:31
I don't think you can read into the diamater of the damper tube, there is more to it than that. Maybe I missed what you were asking though ?

I have adjustable damping with 2.25" springs on my car.

i meant there has to be a bigger piston in there ,
more oil ,more piston ,better damping NO ??

iirc the wall is 1mm thick , meaning gtx has a 43mm piston
where as the 19 16v has 50mm .

i know what you are saying though ,with aftermarket stuff you can
get better damping even with smaller pistons .
i was trying to point out i made my car almost as heavy as a 19 16v
with the f7p conversion and must match the damping ,spring rate
accordingly .

Rob@Backyardracing
28-08-2009, 20:40
Im 95% sure we have that exact tool in our workshop... :confused: we deffo have the steady of that size i just cant say ive noticed the rollers on it, but i cant see it of being any use without the rollers?? we have never used it, its sat under a bench...

Deano
29-08-2009, 17:10
Im 95% sure we have that exact tool in our workshop... :confused: we deffo have the steady of that size i just cant say ive noticed the rollers on it, but i cant see it of being any use without the rollers?? we have never used it, its sat under a bench...

They sometimes have pieces of brass instead of rollers, its just to keep it steady really,

Which part of the shocker did you want machining ? i have a lathe at work that should fit the whole lot inside the chuck.
If you put some dimensions up i'll have a check on tuesday.

Schakal
31-08-2009, 12:40
They sometimes have pieces of brass instead of rollers, its just to keep it steady really,

Which part of the shocker did you want machining ? i have a lathe at work that should fit the whole lot inside the chuck.
If you put some dimensions up i'll have a check on tuesday.


hi mate , its the top of the piston rod i need shortened ,obviously new threads
will have to be cut accordingly .
thanks for the offer but i think i have found someone local to do it for me now :agree: