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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Thu Nov 16, 2023 6:27 pm Post subject: Another SDR project |
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Six months ago I bought an SDR project with the intention of a sympathetic restore to be on the road for the following spring/summer.
It was sold as a non-runner and I was clearly told that it had seized. Its a single cylinder 2 stroke so assumed - head and barrel off, possible replacement piston/rings and a hone/rebore at worst. Unfortunately its turned out to be significantly more work than I anticipated.
I am intending to post images as the project progresses but cant currently see where to attach them? _________________ If in doubt ask, or RTFM.
Life is a perpetual learning curve. |
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waggytee
Joined: 29 Nov 2022 Posts: 17 Location: Shopshire, UK
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Posted: Sat Nov 18, 2023 9:45 am Post subject: |
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Do projects ever turn out differently
I struggled with embedding images also - I believe that you need to set up an image hosting site or dropbox, and then paste a link rather than just attaching a photo from your hard drive straight into the forum.
Guidance says that you're supposed to add the [img] at the start and end of the link and that should display it, however that never worked for me so I just inlcuded the raw link as per the below.
Hopefully see some photos of the 'before' shots and then the 'after' in the spring
[img]https://www.dropbox.com/s/72zyhbinl7h5ooq/1.jpg?raw=1[/img]
https://www.dropbox.com/s/72zyhbinl7h5ooq/1.jpg?raw=1 |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Sun Nov 19, 2023 7:48 pm Post subject: |
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Fortunately I took a few pictures prior to the initial enthusiastic 'dive straight in' strip down. Once I have mastered Dropbox I will post some of them.
A challenge is often great but its only a challenge if there is a chance of achieving the desired goal _________________ If in doubt ask, or RTFM.
Life is a perpetual learning curve. |
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DSBBadmin Site Admin
Joined: 13 Nov 2006 Posts: 722
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Posted: Mon Nov 20, 2023 4:24 pm Post subject: Re: Another SDR project |
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thump566 wrote: |
I am intending to post images as the project progresses but cant currently see where to attach them? |
Yeah, you can't upload images directly to this site I'm afraid, they have to be stored online somewhere else already and then you can either provide a link or reference them using [img] tags and they'll be embedded in your post. |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Mon Nov 20, 2023 6:31 pm Post subject: |
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Will need to try and find a free hosting site. _________________ If in doubt ask, or RTFM.
Life is a perpetual learning curve. |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Sat Jan 27, 2024 8:51 am Post subject: |
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Hopefully this will work?
This was the SDR when I collect it last year prior to any work on it.
https://ibb.co/PxHdDd6
Please let me know if you can/cannot view the image ok before I add more.
Cheers. _________________ If in doubt ask, or RTFM.
Life is a perpetual learning curve. |
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mikog Show Star !
Joined: 10 Jul 2008 Posts: 8 Location: West Yorkshire
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Posted: Sat Jan 27, 2024 10:32 pm Post subject: |
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Looks good to me.
It doesn`t look like it needs much doing to it.
I`ve always fancied a Whippet. |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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mikog Show Star !
Joined: 10 Jul 2008 Posts: 8 Location: West Yorkshire
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Posted: Mon Jan 29, 2024 10:24 pm Post subject: |
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O dear, I see what you mean, it needs a bit more than a quick wire brushing.
It looks like the crank could possibly be salvageable to me.
Hope you get some good news soon.
On a more more positive note the rest of the bike looks very good. |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Tue Jan 30, 2024 3:42 pm Post subject: |
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One of many questions has arisen, namely ... is the SDR standard chassis Nickel or Chrome plated?
I have read articles with both being mentioned but dont know which is correct. Its appears to be lacquered with places being worn or chipped (the lacquer only) and I would like to sort those areas but not sure of the coating and how to rectify it?
If anyone has attempted attacking the chassis please let me know how it went.
Whilst the engine is away I hope to start on the chassis, replacing bearings where appropriate or possibly look at overhauling the suspension.
The hoses should be easy to source as I have a good contact in that field that provided a set for another jap import previously.
The list of items to be actioned is currently expanding on the whiteboard. |
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James P
Joined: 31 Mar 2013 Posts: 185 Location: Sydney, Australia
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Posted: Sat Feb 17, 2024 11:51 pm Post subject: |
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thump566 wrote: |
One of many questions has arisen, namely ... is the SDR standard chassis Nickel or Chrome plated?
I have read articles with both being mentioned but dont know which is correct. Its appears to be lacquered with places being worn or chipped (the lacquer only) and I would like to sort those areas but not sure of the coating and how to rectify it?
If anyone has attempted attacking the chassis please let me know how it went.
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Ron,
Popular opinion suggests nickel plating, although I think that nickel is also used in the 'normal' process for decorative chrome plating.
The clear coating on my own SDR frame was brittle enough in some places to be scratched off using a fingernail, but was still very tough in other places - it seemed unaffected by prolonged coating with paint stripper. I elected to just clean up my frame as best I could and I repainted the hidden unpolished areas with silver POR-15 rust preventative paint (these areas had accumulated just a little surface rust).
I understand that there are powder and/or ceramic coatings available which mimic chrome quite well, so these may be an option if refinishing of the whole frame is preferred. Alternatively, a medium-to-brighter silver painted finish would unlikely look out of place if one isn't especially concerned with maintaining the original appearance.
Regards,
James |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Wed Mar 06, 2024 9:26 pm Post subject: |
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The crankshaft was salvageable fortunately, and the only concession was turning down one side of the shaft (rotor side) to address pitting. Fortunately it was then able to use the DT200 oil seal to match the machined shaft. The crankshaft has been rebuilt with a new conrod and small end bearing.
The cases have been vapour blasted to clear any corrosion and awaiting fitment of new bearings throughout.
The barrel and head were also cleaned, the barrel subject to a mild hone and supplied with a new Wossner piston and rings.
In the interim I have been cleaning up the trellis framework, it has amassed around 35 years of weather and taking a fair amount of TLC.
I will add a few more image inks when I get a chance. |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Fri Apr 05, 2024 10:11 pm Post subject: |
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While the cases were away being cleaned and the crank refurbished at PJME, I spent time cleaning the chassis - a much bigger job than I thought but hopefully will be worthwhile in the end.
Attached are a few images of the template I created for the crankcase bolts - luckily the template prints on an A4 page well and it practically the same size as the crankcase which was a fluke.
I was also planning to install a tacho as outlined in JamesP SDR rebuild but discovered the drive parts were now NLA. That went out of the window until I spotted an SDR parts bundle on eBay and snagged them for a Greek breaker . The bundle included the NLA parts and I have now ordered the other items from a UK Yamaha dealer plus finding an instrument panel in the UK of an SRX400 which has the OEM tacho to migrate across.
Also attached is an image of the reed valve stops - one before and one after cleaning. Another casualty of water ingress and not something as yet that I have identified the cause of but hopefully it will become clear as the rebuild continues.
https://ibb.co/SVLL5Hw
https://ibb.co/88dFfdw
https://ibb.co/8ry03w2
https://ibb.co/mCM3Whc
https://ibb.co/12LpmsV |
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thump566
Joined: 28 Jun 2023 Posts: 31 Location: West London
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Posted: Sat May 04, 2024 6:58 pm Post subject: |
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Ok, the trellis frame is like a mini Forth Bridge, at least it feels like it whilst cleaning it up.
The refurb progress took a hit as I was away for 4 weeks although a bundle of bits was waiting on my return, hopefully the package contains all the items for the DT200R speedo drive mechanism plus the cable.
I have ordered a workshop stand to use whilst both front and rear end remain off the bike which will hopefully be useful as the re-assembly progresses. Yes I could have made my own stand but there is currently a long list of jobs and the stand would have been yet one more.
To be continued ... |
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