Author Topic: Yamaha RD250. The Model Guide  (Read 147146 times)

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Offline David Isherwood

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Yamaha RD250. The Model Guide
« Reply #30 on: November 02, 2008, 01:31:59 PM »
They all measure up and the sprocket and disc fit perfectly?



The sprocket side is like this....









Is your rear hub from the earlier C model?





.
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spooker

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Yamaha RD250. The Model Guide
« Reply #31 on: November 02, 2008, 09:51:25 PM »
yes it is off the c but I couldn"t imagine that they would change the castings to that degree, but I could be wrong.  All the mag spacers Dust covers should be the same as the mag.  What year are yours off?  I know C&D where the same

Offline David Isherwood

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Yamaha RD250. The Model Guide
« Reply #32 on: November 03, 2008, 06:43:26 AM »
Hi Ralph, These came off a RD250E.  It was extreamly rare to have spoked wheels on an E/F but they were avalable.



The RD"s were one of the first bikes to have "Mags" so everyone opted for them. At a premium of ?30 I think?



So are these "worth their weight" plus sum??



Dave    
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Offline fizzydog

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Yamaha RD250. The Model Guide
« Reply #33 on: November 03, 2008, 09:34:34 AM »
Hi Ish,  



The rear hub in your picure looks similar-ish to my "D".



Have you been able to get any new crush drive rubbers for the hub and if so where from as I will defo need a set.



Dave.
Bikers check the weather in the morning to see if they're gonna ride. Motorcyclist only check the weather to see what were gonna wear.
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Offline mervin

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Yamaha RD250. The Model Guide
« Reply #34 on: November 03, 2008, 10:15:11 AM »
Fizzy dog i think they are available from PGM if not HVcycle deffo have em



http://www.hvccycle.com/rd400vintageparts2.htm

Merv
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Offline fizzydog

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Yamaha RD250. The Model Guide
« Reply #35 on: November 03, 2008, 02:52:33 PM »
Thanks Merv,

 

 I know that Jonny at PGM has no stock of the crush drive rubbers.



I will pursue the hvccycle route in the near future.



Dave.
Bikers check the weather in the morning to see if they're gonna ride. Motorcyclist only check the weather to see what were gonna wear.
RD250'D'         
RD400'E'
HONDA CB700
TRIUMPH TIGER 800XC
In the Heart of Cheshire.

Offline David Isherwood

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Yamaha RD250. The Model Guide
« Reply #36 on: November 04, 2008, 07:08:59 AM »
I found my hub in the RD 250/400(E) parts manual download, page 55. Part no.1U5-W2531-00.  

Search in tech section downloads.  
 If it 'ent broke don't fix it!

Offline NIRD

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Yamaha RD250. The Model Guide
« Reply #37 on: November 04, 2008, 10:40:52 AM »
 
Quote from: Ish
I found my hub in the RD 250/400(E) parts manual download, page 55. Part no.1U5-W2531-00.  

Search in tech section downloads.  









And here"s the Parts List







Still haven't got round to my first restoration yet.
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Offline Dave@TSR

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« Reply #38 on: November 04, 2008, 11:13:11 AM »
looks like the hubs need vapour blasting Jim ....  

Offline David Isherwood

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Yamaha RD250. The Model Guide
« Reply #39 on: November 04, 2008, 02:01:24 PM »
Well done Jim   I think yours are in a better condition than mine when I found them.

That plastic cover on your front wheel (speedo side) is the genuine artical.

I think the NOS guys would actually consider killing you for that.  



Now all you have to do is chuck money at them
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Offline David Isherwood

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Yamaha RD250. The Model Guide
« Reply #40 on: November 04, 2008, 02:09:04 PM »
 
Quote from: Dave @ T.S.R.
looks like the hubs need vapour blasting Jim ....  




Hi Dave,  How does vapour blasting work and what does the finished artical look like?

Also is it expensive?
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Offline Dave@TSR

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« Reply #41 on: November 04, 2008, 02:30:15 PM »
All the info that you ever want to know about vapour blasting is here ....





http://www.tsrvapourblasting.co.uk/



Its not as expensive as people think , just let me know what you want done & i can give you a price ...  

Offline David Isherwood

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« Reply #42 on: November 04, 2008, 02:34:34 PM »
Thanks Dave  
 If it 'ent broke don't fix it!

spooker

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Yamaha RD250. The Model Guide
« Reply #43 on: November 04, 2008, 09:30:20 PM »
Thanks for the info re the E and I guess F hubs  I know what to keep my out for now!  Vapour blasting is the best way to go for sure, and if your serious have the part clear anodized that way it will never need polish or elbow grease again.  Just wash with soapy water.  With crank cases etc the finish is amazing, just be sure after washing-riding etc that you dry it off or otherwise it will corrode.  Cheers.

Offline Dave@TSR

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Yamaha RD250. The Model Guide
« Reply #44 on: November 05, 2008, 02:51:09 AM »
Corrosion is not a problem anymore as we use a corrosion inhibitor & you can now buy a product called ACF50 ..