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Honda CRF230 rear drum to disc brake conversion

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gwernybwch
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Joined: 30 Jul 2008
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PostPosted: 10:07 - 26 May 2013    Post subject: Honda CRF230 rear drum to disc brake conversion Reply with quote
I've read some people converting the rear drum brake to a disc by using a XR250 (I think) hub, rim, calipers etc,

But this guy seems to be doing it another way, possibly using the old wheel.
https://clubedatrilha.com.br/moto-trilha-honda-crf-230-preparada-suspensao-invertida-freio-disco

Anyone care to suggest what he has actually done?
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serlant
Brolly Dolly



Joined: 06 Jul 2009
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PostPosted: 10:15 - 26 May 2013    Post subject: Reply with quote
looks to me like hes milled out the hub of the friction surface, then fitted a blank with bolt holes in it that holds the disc, where all the internal brake gubbins would have been if it were drum.

how hes got the blank to stay I don't know, possibly pressed it in as an interferance fit?
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dangerousdave
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Joined: 22 Apr 2011
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PostPosted: 19:13 - 26 May 2013    Post subject: Reply with quote
Quote:
I've read some people converting the rear drum brake to a disc by using a XR250 (I think) hub, rim, calipers etc,

But this guy seems to be doing it another way, possibly using the old wheel.
https://clubedatrilha.com.br/moto-trilha-honda-crf-230-preparada-suspensao-invertida-freio-disco

Anyone care to suggest what he has actually done?


He has used the CRF 250R rear wheel, and made mounts for the caliper on the swingarm.

The forks are CRF 250R too.
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gwernybwch
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Joined: 30 Jul 2008
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PostPosted: 21:53 - 26 May 2013    Post subject: Reply with quote
dangerousdave wrote:
He has used the CRF 250R rear wheel, and made mounts for the caliper on the swingarm.


Thanks for the reply. I’m not sure that the whole of a CRF250 wheel has been used as there is one photo of a CRF230 wheel on a lathe and their definitely got the CRF230 hub in the end product.

serlant wrote:
looks to me like hes milled out the hub of the friction surface, then fitted a blank with bolt holes in it that holds the disc, where all the internal brake gubbins would have been if it were drum.

how hes got the blank to stay I don't know, possibly pressed it in as an interferance fit?


Good suggestion. Can’t really think of any other way that they would do it other than press it in?

Anyway it is beyond me, looks like I’ll be sticking to a rear drum brake for the foreseeable future!

Cheers.
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Drake
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Joined: 01 Oct 2010
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PostPosted: 21:16 - 27 May 2013    Post subject: Reply with quote
not even clicked the link but probs sweated it in and used a key way.
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gwernybwch
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Joined: 30 Jul 2008
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PostPosted: 17:15 - 19 Jun 2013    Post subject: Reply with quote
Drake wrote:
probs sweated it in and used a key way.


Thanks for the reply, but I haven't got a clue what "sweated it in and used a key way" means?
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Drake
World Chat Champion



Joined: 01 Oct 2010
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PostPosted: 17:54 - 19 Jun 2013    Post subject: Reply with quote
get the outer hot and the inner cold then drop it in
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box
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Old Thread Alert!

The last post was made 12 years, 214 days ago. Instead of replying here, would creating a new thread be more useful?
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