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Author Topic: DR800 Big single thumper  (Read 7005 times)

Offline The Limey

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Re: DR800 Big single thumper
« Reply #10 on: Nov 14, 2016, 16:16:25 »
Ah, a Dr Big.  At the time the largest production single pot motor in the World.

Watching with interest.
I was born a rocker.  I'll die a rocker.  And I'm proud of it.

Offline beachcomber

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Re: DR800 Big single thumper
« Reply #11 on: Nov 14, 2016, 16:37:24 »
Can I vote for the Dunlop tank please ??? 8)
"if at first you don't succeed, you've already been a failure once"

" we're not going back to the sixties - we never left "

"yep, nostalgia ain't what it used to be"

"I used to be indecisive - now I'm not so sure"

Offline Bootsey

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Re: DR800 Big single thumper
« Reply #12 on: Nov 14, 2016, 16:47:24 »
Signing on

Offline lchris21

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Re: DR800 Big single thumper
« Reply #13 on: Nov 14, 2016, 17:39:38 »
Never mind all that.  What's that Jenn You wine Dunstall tank doing hiding in there and trying to escape?  :-)
Good spot.....came with the box of bits...not my style

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Offline lchris21

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Re: DR800 Big single thumper
« Reply #14 on: Nov 14, 2016, 17:42:37 »
Can I vote for the Dunlop tank please ??? 8)
Yeah I'm 50/50 at the mo.....want to get the tunnel out of the smaller tank and see how it sits in its correct position? Might go with Dunlop if I can smash some decent knee indents into it

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Offline Finnigan

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Re: DR800 Big single thumper
« Reply #15 on: Nov 14, 2016, 20:18:43 »
Yep

Offline johnu

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Re: DR800 Big single thumper
« Reply #16 on: Nov 14, 2016, 21:14:51 »
Smaller tank looks better imho ;)  As you say though needs some surgery to get it to sit right.  Love the 800 thumper :)

Offline beachcomber

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Re: DR800 Big single thumper
« Reply #17 on: Nov 15, 2016, 09:07:47 »
Yeah I'm 50/50 at the mo.....want to get the tunnel out of the smaller tank and see how it sits in its correct position? Might go with Dunlop if I can smash some decent knee indents into it

Sent from my SM-G388F using DO THE TON mobile app



If anyone can - it's you my man ..........................
"if at first you don't succeed, you've already been a failure once"

" we're not going back to the sixties - we never left "

"yep, nostalgia ain't what it used to be"

"I used to be indecisive - now I'm not so sure"

Offline lchris21

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Re: DR800 Big single thumper
« Reply #18 on: Jan 03, 2017, 07:07:35 »
Happy New Year fellow builders, lurkers and observers.....

Managed to get some garage time in during the Xmas period, not a lot, but anything is progress? Seemed to spend most of my time trawling the internet, ebay, breakers yards etc looking for bits I need, buying bits I think I need then selling the same bits I wont need !!!

Have been concentrating on the front end, trying to decide on what I want to do. I originally decided and bought a set of Aprilia forks, but then had a change of plan and decided to use some GSXR 600 forks with radial calipers as they came up at the right price, might be easier to fit into the headstock and bit less of a headache. Always liked the look of a radial front end with spoked wheels, but as we know they tend to use custom hubs which can get a bit 's

Anyway few visits to the local breakers secured some wheels I thought I could use.............At one point I think I had more wheels than him.......... Fast forward a few weeks and I spot a set of discs which I like the look of, from a Ducati something.....they will look nice as well.

Cut a long story short I'm now back on the Aprilia forks, with the Ducati discs and some calipers I've used before, which are common on many Honda's. Bit of jiggery pokery with some spacers for the calipers and all should be fine. So I made a start cutting stuff and machining some bits.


Offline lchris21

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Re: DR800 Big single thumper
« Reply #19 on: Jan 03, 2017, 07:12:10 »
Plan is to remove the rim from the rear original DR800 wheel and use that on the front. Then re-lace the the hub from one of the scrap wheels into that rim. Use the DR800 rear hub, and the new wider rim I've picked up......following me

During my quest to find a hub, I managed to locate a wheel off some random Japanese bike that had the right PCD for the disc along with correct register bore, but unfortunately the spoke count was wrong. The various wheels I tried had some key missing qualities I was looking for, so I eventually plumped for the "Japanese" wheel which looked meaty enough and could be modified to to the discs I want to use.

Some of the wheels in the breakers are so old, the model labels have long since dropped off, and trying to find a rare XS650 hub was like trying to find a needle in stack of haystacks. The XS650 hubs, as we know are commonly used for spoked front conversions, but since the invention of the phrase "barn find" they now sell for the same price as a small family hatchback.

Need to modify the discs by elongating the mounting holes a mm, to pick up the PCD off the, I think Suzuki GT hub???............Didn't want to re-drill 6 more holes in the hub or disc, and I also have to make spacers to register the discs for concentricty on the hub.