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Slip & Twist Tracbar--materials?

General Tech Talk

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Slip & Twist Tracbar--materials?

Post by Stock-man »

Ok,I know this has been covered a thousand times,...and yes I did search. :finger:
I'm wanting to make a slip and twist tracbar for my SPOA Hillux set up in my Suzuki.I know the general idea of them,bushed at each end with one tube sliding over the other.... My question is what sort of tube are guys using for this? I've tried hollow bar,but the closest "fit" between the two tubes is about 2mm smaller,which is too sloppy.
I've seen pirate4x4,but I think the tube they're using is a bit thin walled :?: What are local guys using,and where did you get it? (and how much $ was it)
Cheers
:D
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Post by big lux »

x2?
Blown ls1 GQ winch truck. and GU tow car / daily
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Post by pongo »

Im pretty sure richo's hilux used this setup, Search the members and maybe the pics are still there
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Post by MART »

We use a range of schedule steel at work and you generally can get one size to fit into another within 1 mm clearance , just check the specs of the pipe manufacturers , with the schedule piping the internal diameter decreases as you go up with the schedule size , from memory I think a schedule 40 25 nb will fit into a schedule 80 32 nb or something like that , Cheers Paul.
BLOWNZUK 1.3 efi,sc14 supercharger,hilux diffs,detroit lockers,stage 4 rockhopper,6 point cage,35 muddies.
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Post by MudLux101 »

I am after the same information as i have been wanting to make one of these for a while.

I might just be a little slow, but what does "schedule piping" mean and also the terms 25nb and 32nb?
So much money to spend, So little income.
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Post by ozy1 »

made one just recently, and i used hollowbar, i can check the sizes, but we did have to machine 1mm off of the smaller one so it slid inside,

let me know if you want the sizes,

works a treat so far,
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Post by MART »

Schedule means wall thickness , 4 , 5 , 6mm wall and 25 nb and 32 nb is nomonal bore being the pipe size so 25 mm inside diameter so when you order schedule 40 25 nb the size will be 25 inside and 31-32 outside , so schedule 80 would be 22 -23 inside and still 31-32 outside , Cheers Paul
BLOWNZUK 1.3 efi,sc14 supercharger,hilux diffs,detroit lockers,stage 4 rockhopper,6 point cage,35 muddies.
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Post by Stock-man »

Mudlux,I believe nb stands for nominal bore,which refers to the inner bore of the pipe. Don't know what "schedule piping" is though :?:
ozy1,thanks for the offer mate,but I was hoping to get away with it without machining anything! yeah,I'm a cheap ass! :D
I could use the sizes you used anyway mate.
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Post by Stock-man »

D'OH too late with the reply!
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Post by Gribble »

pongo wrote:Im pretty sure richo's hilux used this setup, Search the members and maybe the pics are still there
It did, and its here......

http://www.outerlimits4x4.com/phpBB2/vi ... light=trac

Searching for shit rocks... :D
\m/
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Post by MudLux101 »

Im still a little vague on this whole Nominal Bore caper.

Just want to get a little more info before i head off to the steal joint and make a fool of myself.

I have read in a post that "25NB slips into 32NB close enough" what are the measurement of these 2 pipes in mm?

Also if i go and ask for 2 metres of 25NB does that refer to a specific thing or do i need to ask for a particular wall thickness?
So much money to spend, So little income.
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Post by Stock-man »

Gribble wrote:
pongo wrote:Im pretty sure richo's hilux used this setup, Search the members and maybe the pics are still there
It did, and its here......

http://www.outerlimits4x4.com/phpBB2/vi ... light=trac

Searching for shit rocks... :D
There's no pics though! :oops:

I thought nb pipe had a weld seam inside it??

X2 need more info!!!!
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Post by MART »

Your looking for a pipe which is 34 mm outside , this is a common size for sprinkler pipe , usually red , and is 25 nb which the outside dimension is used for thread cutting and is pretty spot on 34 mm. The larger pipe is 32 nb , this has an inside measurement of arround 35mm and 43.5 on the outside , it is schedule 80 and has no weld down the pipe , so you end up with a half mm tolerance each side , both these pipes should be available at most metal yards , if they don't have it a sprinkler pipe manufacturer will and they would probably have an offcut of each , Cheers Paul.
BLOWNZUK 1.3 efi,sc14 supercharger,hilux diffs,detroit lockers,stage 4 rockhopper,6 point cage,35 muddies.
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Post by MudLux101 »

Cheers, thanks for the info

So this means that 32nb has an inside diameter of around 35mm? Im just finding it hard to follow, as i cant see what the correlation is. I would have assumed 32nb would have a 32mm ID and 25nb would we 25mm ID.

Many sites list it as heavy walled and thin walled but dont actually list the wall thikness. Hopefully i can find a steel place that will let me try a few test fits to see what will work.
So much money to spend, So little income.
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Post by Stock-man »

MudLux101 wrote:Cheers, thanks for the info.
X2

Very much appreaciated :)
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Post by Stock-man »

Would a fellow OL member be able to 'Hook a brother up?' :D
I've searched all the steel shops in town,and some up to an hours drive away,and none of them have seamless tube! Could someone locate me 600mm of 32nb schedule 80,as per post below, and send me up some?
Pretty please with suger on top!
;)
MART wrote:...The larger pipe is 32 nb , this has an inside measurement of arround 35mm and 43.5 on the outside , it is schedule 80 and has no weld down the pipe...
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Post by -Richo- »

what more info do you want? its all covered in the thread i did ages ago. You dont need seamless tube........
Yurich Design Services
www.yds.net.au
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Post by Stock-man »

Well I went and bought 25nb and 32nb pipe (both with a weld seam inside) and the smaller pipe gets jammed in the bigger pipe - on the weld seam :?
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Post by -Richo- »

what wall thickness? did you test fit it at the metal shop before you bought it? from memory the medium wall was a fairly loose fit. Just keep trying what pipe they have until you find some thats suitable, its not rocket science :lol:
Yurich Design Services
www.yds.net.au
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Post by 80lsy gq »

Stock-man wrote:Well I went and bought 25nb and 32nb pipe (both with a weld seam inside) and the smaller pipe gets jammed in the bigger pipe - on the weld seam :?
you need to get medium wall thickness in both tubes..

for 32nb it is 3.2mm wall thickness, for 25 nb it is 2.6mm wall thickness

dave
www.bolsys.com.au

the original and the best
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Post by Stock-man »

-Richo- wrote:what wall thickness? did you test fit it at the metal shop before you bought it? from memory the medium wall was a fairly loose fit. Just keep trying what pipe they have until you find some thats suitable, its not rocket science :lol:
I thought the idea was to get as tight a fit as possible??? Like the Yankie ones on Pirate4x4? wouldn't it clang around if it was a loose fit? Sorry if my questions sound thick,but this is my first 4WD and I'd like to get this right the first time :!:
Thanks 80lsy gq,I'll have to back and have another look...
:roll:
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Post by chunderlicious »

the heavy is a tight fit but it wont move around as much. itll wear in eventually :? try and and see if it works, it shouldnt limit much travel just being tight. if it doesnt do it in medium 32 instead
turbos are nice but i'd rather be blown
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