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Home > Technical Chat > RTS clutch

JT

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2742 Posts
Member #: 637
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Hertfordshire

Cheers guys.

With the spacer length, I'm right in making them the length of the two springs and the two pivot rings all added up?
I've written it down bit I think it comes to 11.35mm

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Sprocket

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11046 Posts
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Preston On The Brook

Sounds about right

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


lee.pb

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1414 Posts
Member #: 9199
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Lancashire

If the blue dot is anything like the one in my picture its an up rated 1275 clutch from minispares.
Got the blue dot and a 1000 plate in my RTS and doesn't slip at 13psi can let you know what it does on the RR later this month.


On 20th Apr, 2017 JT said:
Just reading up on rts clutches.
I have two very clutch set ups in the barn but unsure what they are.
One has a dark blue dot on it.
The other doesn't have any on it but the engine it's on is 1275 metro I belive.

Any ideas what the dark blue one could be?
Also is there a chart of what set ups should cope with what?

What the mind can conceive the mini can achieve
MITP 2012 17.01 seconds 1/4 mile against "The Don"
MITP 2013 16.83 seconds 1/4 mile


JT

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2742 Posts
Member #: 637
Post Whore

Hertfordshire

Sounds good Lee.

It's a dark blue dot. I havent got the thickness on me as it's written down in the workshop.

Just another thought, do I need to counter sink anything?

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


slater

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1030 Posts
Member #: 1291
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Suffolk / Birmingham

Depends how you are doing it. I think the best way is with c/s bolts and nuts rather than tapping the cover. You do need to be careful you dont have much sticking out on the pressure plate side which ever way you do it. Made that mistake.


Yo-Han

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967 Posts
Member #: 3228
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North of the Netherlands

Small hi-jack if I may please?
Regarding the 8mm bolts; what grade are people using now?
The rivets a soft as butter but I recall hi-grade bolts to be used when Robert started off this briljant mod...

Dazed and Confused....


dazibee

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553 Posts
Member #: 1356
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TRURO, CORNWALL


Bear in mind if you use an AP rally clutch plate for example, then this plate even when new seems quite thin compared to other plates. So when you bolt it together with your assembly you may find the whole assembly bolts together under not much tension and your clutch will slip. Best to buy all your bits, build it then send it off for machining of the horns and balancing as required or you will end up taking it apart again and doing it twice like I did.

On 21st May, 2017 Sprocket said:



On 20th May, 2017 Joe C said:
I've not bothered, I think the lugs are reduced hight anyway on the med and mini spares ones.


In my experience the posts are taller such that there spring is under flat. It does seem counter intuitive, but when you look at the data for these type of springs, the manufacturer designs them such that the clamping force is just under peak. As the clutch wears it achieves peak and then drops off again to the point that slip should occur before the wear is so great that the rivets are starting to wear through on the friction plate.

This is why they recommend the clutch is replaced as a whole, friction plate and pressure plate together. Austin/ Rover only ever used to sell a complete assembly, flywheel included.


Sprocket

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11046 Posts
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Preston On The Brook




On 30th May, 2017 Yo-Han said:
Small hi-jack if I may please?
Regarding the 8mm bolts; what grade are people using now?
The rivets a soft as butter but I recall hi-grade bolts to be used when Robert started off this briljant mod...


Don't use M8 bolts, use 1/4UNF*Clapping*

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


Yo-Han

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North of the Netherlands

Actually that make a lot of sense...
Did you use an upgraded steel grade?


On 30th May, 2017 Sprocket said:



On 30th May, 2017 Yo-Han said:
Small hi-jack if I may please?
Regarding the 8mm bolts; what grade are people using now?
The rivets a soft as butter but I recall hi-grade bolts to be used when Robert started off this briljant mod...


Don't use M8 bolts, use 1/4UNF*Clapping*

Dazed and Confused....


Sprocket

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11046 Posts
Member #: 965
Post Whore

Preston On The Brook

I used NAS bolts which are probably the highest grade easily available.

You can pick up some counter sunk bolts on eBay quite cheap.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


JT

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2742 Posts
Member #: 637
Post Whore

Hertfordshire

Right chaps. How important is it to get these setups balanced?

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Rob Gavin

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6729 Posts
Member #: 618
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Glasgow

all I can say is mine isn't but no obvious issue


Joe C

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12307 Posts
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Carlos Fandango

Burnham-on-Crouch, Essex

I havent on the 2 setups Ive run and its seemed ok, but I am going to do it on the next one as it'll have a higher rev limit.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



apbellamy

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16540 Posts
Member #: 4241
King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

Haven't on mine, but with the distance covered that's hardly a reasurance...

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


Brett

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9502 Posts
Member #: 1023
Post Whore

Doncaster, South Yorkshire

Mine was 7 grams off before balancing im quite sure i built it up on a new AP setup aswell
Im knocking up a couple of these at some point been collecting APs 😂

Yes i moved to the darkside *happy*

Instagram @jdm_brett


JT

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2742 Posts
Member #: 637
Post Whore

Hertfordshire

Finally got it back from being balanced!

What do I set the throw out stop nut to? 6.5mm as standard or is it different being a RTS?

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Brett

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9502 Posts
Member #: 1023
Post Whore

Doncaster, South Yorkshire

meh.. i never used one *happy*

Yes i moved to the darkside *happy*

Instagram @jdm_brett


chris_evans

7 Posts
Member #: 11459
Junior Member

Cumbria

I'm going to be making an RTS clutch for my build. Out of interest, who did you go to to get your assemblies balanced?


JT

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2742 Posts
Member #: 637
Post Whore

Hertfordshire

I used MRA. Nice guy but it took ages!

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Rammie2000

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1750 Posts
Member #: 10190
Post Whore

belgium

I never use the nuts. Never had a problem leaving them of. But should be the same as it does not set the space between the spring and bearing. Its now a thickness of a spring closer so would even disengage sooner. Could be wrong but that is how i see it.


On 15th Jul, 2017 JT said:
Finally got it back from being balanced!

What do I set the throw out stop nut to? 6.5mm as standard or is it different being a RTS?

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018


Sprocket

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11046 Posts
Member #: 965
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Preston On The Brook

Set the throw out stop to 6.5mm as standard. With the spring lever ratio, this equates to roughly 2mm throw out on the friction plate. less than 6.5mm throw out adjustment might see the clutch not fully disengage, much more than 6.5mm and the spring fingers will bind on the centre boss and apply excessive load on the crank thrusts which defeats the point of the RTS.

If you still have the clutch on the bench, check the throw out distance and make sure it doesn't bind up before you reach 6.5mm. I do this using the flywheel puller centre bolt depressing the thrust sleeve. Measure the throw out distance on the thrust sleeve with a DTI. This allows you to check that the pressure plate is moving enough to release the friction plate propperly

Edited by Sprocket on 10th Sep, 2017.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

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