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 Post subject: Discs replacement ?
PostPosted: Sat Aug 11, 2018 4:08 pm 
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Joined: Thu Jun 21, 2018 10:02 am
Posts: 15
Can anyone confirm that front and rear RD 350 brake discs fit the RD 500 too?


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 Post subject: Re: Discs replacement ?
PostPosted: Sat Aug 11, 2018 5:02 pm 
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Joined: Sat Feb 04, 2012 7:36 am
Posts: 2479
Location: Eastern Ontario Canada
RD350 YPVS front discs do fit. I have a pair on an RD500 wheel now that is for project here. RD500 disc thickness is 7.5 mm. RD350 YPVS disc thickness is 5.0 mm (1983-85) or 4.5 mm (1986-90).

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 Post subject: Re: Discs replacement ?
PostPosted: Sat Aug 11, 2018 6:24 pm 
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Joined: Fri Dec 30, 2005 7:01 pm
Posts: 2212
Location: CAMBRIDGE,UK
I can confirm the rear disc will not fit and is not vented


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 Post subject: Re: Discs replacement ?
PostPosted: Sun Aug 12, 2018 8:22 am 
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Joined: Fri Feb 12, 2010 3:47 pm
Posts: 99
Location: surrey u.k
thundercat rear disc same size and disc bolt OCD will fit , rear disc 245mm hope this helps regards


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 Post subject: Re: Discs replacement ?
PostPosted: Sun Aug 12, 2018 3:38 pm 
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Joined: Thu Jun 21, 2018 10:02 am
Posts: 15
Thanks for all answers.
Can I get the mc approved with RD 350 brake discs where the minimum size is 4mm ?


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 Post subject: Re: Discs replacement ?
PostPosted: Sun Aug 12, 2018 3:54 pm 
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Joined: Thu Jun 21, 2018 10:02 am
Posts: 15
Hi bungerlowbill:
So a rear brake disc for yamaha yzf600r thundercat will fit directly on the RD500 and can also be road approved ?
For example. such:
https://www.ebay.com/itm/68B407H8-REAR- ... cat=177922


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 Post subject: Re: Discs replacement ?
PostPosted: Tue Aug 14, 2018 7:42 am 
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Joined: Thu Jun 21, 2018 10:02 am
Posts: 15
Now I have just spoken with the local road supervision.
The message was:
If the MC is from before 1990, then there is nothing in the database about brake discs.
You may not use data from, for example, Hayn's manuals.
The data must be verified by the manufacturer, maybe the original manual is okay, but I do not have it.
Thus, the viewer will read only the minimum thickness of the brake disc,
and if it's OK, the MC will not be discarded due to this.

Are there any problems with brake calipers associated with thin discs, for example. 4mm ?
Normal minimum thickness is 7mm.


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