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-   -   Disc spring as Centax clutch spring ? (https://www.rctech.net/forum/onroad-nitro-engine-zone/410768-disc-spring-centax-clutch-spring.html)

beebone 07-18-2011 05:29 AM


Originally Posted by blackyblackman (Post 9140474)
Hi!

Did someone use these shims in a Capricorn LAB-C01 WCE clutch??

If yes, how much shims did i have to use??
10 or 12?
And how much is the pre-load?


Regards,

Michael

It reallly works, I set the the preload very light, around 0.4mm, just secrue the discs. Then you can set the clutch gap, I think 0.4-0.5mm is good enough.

I put the discs in MRX-5 clutch, 0.4 preload, clutch gap 0.5mm.

Roelof 09-11-2011 03:49 AM

And another brand with these spings.

http://www.teamxray.com/teamxray/new...05&catName=RX8 Conical Clutch Washer Spring Set Instruction Manual

The funny thing is that all do come with a combination of 0.4 and 0.6mm while I did find out the 0.5 is working very well. Maybe playing with one more or less or more of the one than the other you can play more with the strength than with only a set of 0.5mm springs.

On the other hand, when you have found the right spring like the Shephers or the Orion square you do not change it.

TomB 09-11-2011 04:28 AM


Originally Posted by Roelof (Post 9642503)
And another brand with these spings.

http://www.teamxray.com/teamxray/new...05&catName=RX8 Conical Clutch Washer Spring Set Instruction Manual

The funny thing is that all do come with a combination of 0.4 and 0.6mm while I did find out the 0.5 is working very well. Maybe playing with one more or less or more of the one than the other you can play more with the strength than with only a set of 0.5mm springs.

On the other hand, when you have found the right spring like the Shephers or the Orion square you do not change it.

this is interesting, i clicked one of the links above and it seems someone sells these high temp steel conical springs but it is $15 euro!

http://www.piranirc.com/prodotto-143...-PiraniRC.aspx

Roelof, do you have a link to a seller who ships worldwide who sells these springs at a cheaper rate?

wingracer 09-11-2011 05:04 AM

Contact your local Xray dealer and get theirs.

Roelof 09-11-2011 05:34 AM


Originally Posted by TomB (Post 9642561)
Roelof, do you have a link to a seller who ships worldwide who sells these springs at a cheaper rate?

As mentioned before, any springshop/manufacturer can deliver these springs in a wide range of dimensions and materials, my supplier has the cheap ones for just 8 cent a piece and the stainless steel ones (which are better) for about 40 cents a piece. The sad thing is they do come with a minimum outside diameter of 15mm so you have to grind or cut them down to 12mm whis is easy on a lathe.

The set sold by the shop in Germany is also arrounf 14 euro and I think the Xray will not be cheaper.

TomB 09-16-2011 11:29 PM


Originally Posted by Roelof (Post 9642675)
As mentioned before, any springshop/manufacturer can deliver these springs in a wide range of dimensions and materials, my supplier has the cheap ones for just 8 cent a piece and the stainless steel ones (which are better) for about 40 cents a piece. The sad thing is they do come with a minimum outside diameter of 15mm so you have to grind or cut them down to 12mm whis is easy on a lathe.

The set sold by the shop in Germany is also arrounf 14 euro and I think the Xray will not be cheaper.

oww...i don't have a lathe. so i guess it's out of the question. I'm sure it can be dremelled but that's pretty hack job for something such as an integral clutch part.

stefan 09-16-2011 11:55 PM


Originally Posted by TomB (Post 9668382)
oww...i don't have a lathe. so i guess it's out of the question. I'm sure it can be dremelled but that's pretty hack job for something such as an integral clutch part.

Even with a lathe it's not that simple.
We did a lot of trial and error until we found the right way to turn the washers to the correct diameter.
These washer are very hard and you need the right tools to work on them.
Also, there are many different levels of quality available and not all of them are suited for the clutch spring.

Dremel? OMG, have fun :blush:

Regarding the price, these springs are actually cheaper than any regular coil spring, simply because they don't wear.

I ran one set the entire season in my son's 8th scale, including Euros and national championships.

Roelof 09-17-2011 12:29 AM


Originally Posted by stefan (Post 9668412)
Dremel? OMG, have fun :blush:

Actually I did with my 1st set..... It is a tough job but it can be done ;)
Other sets were done by my sponsor who has his own factory full with all kind of machines. I havn't heard about any problem.

speed6 01-11-2012 02:12 PM

Hudy Conical Washer on CAP LAB02 - LaB801 CLutch
 
Hey guys, need some advise i have ordered the Hudy conical washer kit for my Lab C02 and Lab 801 as i find the stock spring to heavy.

On the instruction it advises you the following

1/10 to use 5 x 0.6mm + 5 x 0.4mm
1/8 to use 6 x 0.6mm + 6 x 0.4mm

DO you recommend using this setting and since its a difference clutch should i tighten until i get a tread gap of around .5mm?

Thanks

DS Motorsport 01-11-2012 02:17 PM


Originally Posted by speed6 (Post 10156936)
Hey guys, need some advise i have ordered the Hudy conical washer kit for my Lab C02 and Lab 801 as i find the stock spring to heavy.

On the instruction it advises you the following

1/10 to use 5 x 0.6mm + 5 x 0.4mm
1/8 to use 6 x 0.6mm + 6 x 0.4mm

DO you recommend using this setting and since its a difference clutch should i tighten until i get a tread gap of around .5mm?

Thanks

Adjust the pretension nut until it hits the washers and then give it a half turn of preload. This should be an ok setting, probably a bit too loose. Then start increasing the pretension until the clutch starts slipping and back it off a 1/8 turn or so.
These are the settings I run mine with, however I don't have the Hudy ones.

Roelof 01-11-2012 02:38 PM

Indeed that is a good starting point. Screw it against the springs and then an half turn tension. I only have noticed that screwing more tension does not differ much. It is wise to get 2 sets so you can play with all 0.4mm discs up to all 0.6mm discs

speed6 01-15-2012 01:35 PM

So first run used 6 x 0.4 + 4 x 0.6 with a 0.5 clearance from flywheel. Didn't really liked the feel was like slipping and engaging a bit to late for my taste since I need a smooth launch.

Second run 7 x 0.4 + 3 x 0.6 with 0.5 clearance better than before but had to unscrew a bit.

What clearance do you use?

DS Motorsport 01-15-2012 02:55 PM


Originally Posted by speed6 (Post 10174936)
So first run used 6 x 0.4 + 4 x 0.6 with a 0.5 clearance from flywheel. Didn't really liked the feel was like slipping and engaging a bit to late for my taste since I need a smooth launch.

Second run 7 x 0.4 + 3 x 0.6 with 0.5 clearance better than before but had to unscrew a bit.

What clearance do you use?

With the 1/10 clutch with the steel clutch bell and dark red shoe I use 0.45-0.50 gap.
With the 1/10 clutch with the aluminum bell and black shoe I use 0.40 gap.
With the 1/8 clutch with the steel bell and standard red shoe I use a 0.50 gap.
For the 1/8 clutch I haven't tested a lot, I've only driven the 1/8 for one test day and one race day and I wasn't happy with the clutch settings yet.

Roelof 01-15-2012 11:58 PM

With the 1/8 you have to go to at least 0.6mm. 0.7 is common used and some drivers are using 0.8 or 0.9mm


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