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Title: Black magic problem Post by: Elnef on June 13, 2008, 16:39:58 pm As you can see on the picture I have some crack problems with my disk
is that normal for one year of use ? I have a spare one also short time used but that have also small beginning cracks so what disk do you guys use one your race engine ? I have used the disk with a stage 1 kennedy the engine is a 2979ccm type 4 276hp and 290nm thanks John Title: Re: Black magic problem Post by: Udo on June 13, 2008, 17:27:54 pm I never had problems like this , but heard about it . Almost watch for cracks .
Udo Title: Re: Black magic problem Post by: K-Roc on June 13, 2008, 18:58:16 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product,
Where did you purchase that Disc from? K-Roc, Title: Re: Black magic problem Post by: Frank LUX on June 13, 2008, 19:53:09 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product, Where did you purchase that Disc from? K-Roc, Don't wanna play the Smart Ass here, but I noticed the Same... PS: I joined a Picture of my Black Magic Disc... Frank Title: Re: Black magic problem Post by: Oliver Frey on June 13, 2008, 20:33:51 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product, Where did you purchase that Disc from? K-Roc, Don't wanna play the Smart Ass here, but I noticed the Same... PS: I joined a Picture of my Black Magic Disc... Frank Off topic, but it sure is nice for RLR to include a set up guide for this clutch. I ordered mine elsewhere and was told basically figure it out on your own. Title: Re: Black magic problem Post by: K-Roc on June 13, 2008, 23:20:18 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product, Where did you purchase that Disc from? K-Roc, Don't wanna play the Smart Ass here, but I noticed the Same... PS: I joined a Picture of my Black Magic Disc... Frank Ya I hope my comment isn't taken as a slam as it was not intended that way, ( Although I am known as a smart ass from time to time However) Here is a link to the Chinese ones. http://www.qscusa.com/clutch.htm Thanks K-Roc Title: Re: Black magic problem Post by: Steve D. on June 14, 2008, 01:23:03 am I've seen probably a dozen real black magic disks with loads of cracks in them, but none of them ever actually failed like that- the owners just noticed the cracks during teardowns/maintenance.
Also, all of those clutches had the clover stamp as well. Title: Re: Black magic problem Post by: Shubee2 (DSK) on June 14, 2008, 03:38:38 am Also look at the center hub where the splines are Franks is thicker then the other one ::)
Title: Re: Black magic problem Post by: Elnef on June 14, 2008, 07:35:45 am Thanks for youre replys
There was a sfi label on it and if I renember right it says "SFI 1.3" and my spare one has the same center as Franks so maybe my spare one is a china copy or a RLR but what do you guys think buy a new black magic and replace it when the crack come and so on or change to a sort of a super disk and go up to stage 3 in presure plate ?? John Title: Re: Black magic problem Post by: Roman on June 14, 2008, 08:12:23 am I used a super Daikin and a stage 2 last year on my bug. It could just hold the torque, but started to slip after a like 8-10 runs. A stage 3 might have cured it, but I am going for a 4-puck and a stage2.
Title: Re: Black magic problem Post by: richie on June 14, 2008, 08:23:33 am Removed by my choice
Title: Re: Black magic problem Post by: Harry/FDK on June 14, 2008, 13:52:14 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product, Where did you purchase that Disc from? K-Roc, Thanks for the link K-Roc. Jesus these guys copy about everything, check out those "racing Heads" and Aluminium cylinders..... Title: Re: Black magic problem Post by: Frank LUX on June 14, 2008, 14:27:09 pm Hi I looked as close as I could in your picture's but can not see the SFI label or the Mcleod "Clover" stamp on that disc and that would leave me to believe it is a Chinese Copy of the original American made product, Where did you purchase that Disc from? K-Roc, Thanks for the link K-Roc. Jesus these guys copy about everything, check out those "racing Heads" and Aluminium cylinders..... What I heard is that those Aluminium/Nikasil Cylinders are great... ;) Frank Title: Re: Black magic problem Post by: Jay Aldred on June 14, 2008, 17:31:28 pm Mine has also cracked as well as destroying at least 3 brand new Kennedy Stage 2s, one of them on one pass. I have now changed combo to the competition engineering twin floater set-up, hopefully this will work for me.
Cheers Jay.. Title: Re: Black magic problem Post by: GetBackOnTrack on June 15, 2008, 16:02:04 pm Hi John. The exact same thing happend to my black magic disc last year. Ran it with a stage 1 pressure plate for like 3 month before it end up cracked like yours, I didnt even ran slicks with it. Dont know if it had that stamp you all talk about. Besides the cracked black magic disc I cracked 2 of my syncroes in my gearbox.
I just shifted to a stage 3 with superdisc a couple of days ago, havnt had the chance to drive with it yet, but a stage 2 with superdisc couldent hold my engine, you know the specs John. Spring. |