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Ducati 1000 DS build
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Topic: Ducati 1000 DS build (Read 25546 times)
buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #75 on:
January 30, 2024, 11:58:52 AM »
I have agonised over what to do about the number plate… In the end I decided to copy the current crop of bikes that hang it off a bracket off the swinging arm. I quite like how CCM do it so have sort of copied their design. I have used thin wall steel tube which is always difficult to bend, so to prevent kinking I fill the pipe with sand. First I block one end off, and weld a nut on the other. Then its filled with dry sand until its below the threads in the nut. I then hold the tube against the bench grinder and the vibration compacts the sand, so I fill it again. Finally a bolt is tightened onto the sand which compacts it furter.
Doing this means its far less likely to kink as its bent!
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Howie
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Re: Ducati 1000 DS build
«
Reply #76 on:
January 30, 2024, 10:06:11 PM »
Nice!
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buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #77 on:
February 01, 2024, 04:24:46 AM »
I have used these GPS speedos on a few builds now, it makes things simple, neat and light. The hole for the ignition switch made a handy holder for the warning light LED’s!
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buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #78 on:
February 04, 2024, 03:29:22 AM »
The rear number plate mounting looked OK, but it needed a hugger… I wanted to keep things as light as I could so I decided to try some carbon fibre.. first and probably last time as its a nightmare to work with! I had to buy a meter, so I decided to also make the battery tray as well… That’s currently drying, its nice and light but not that pretty, but its unseen so I will live with it. I used an old mudguard to make the mould and the hugger came out rather well! with what’s left I will probably make a front mudguard, we will see how that turns out, on this one I will try the vacuum bag approach.
The new 17″ front rim and new stainless spokes have also arrived. Expensive, but you can't have rusty spokes, it spoils a build
there will be a short interlude in updates now as we are off for some sun for three weeks!
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buzzer
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Re: Ducati 1000 DS build
«
Reply #79 on:
February 24, 2024, 04:41:23 AM »
I have wanted to try Cerakote for a while due to the great reports of its durability and finish. So I purchased a pint to see how it went… its not cheap! I read the instructions on their knowledge base and it seemed simple enough so I thought I would start with the wheel hubs.
First job was stripping the thick powder coat off, and for this I used some commercial paint stripper. As you can see this makes short work of removing it! the stuff you buy from DIY stores is next to useless for this.
Next prep for the coating. I gave the hubs a good blasting with aluminium oxide grit to give it a key, then cleaned then in hot water with some detergent in. I never use washing up liquid for things like this (or rubbing down paintwork) as it contains silicone, which kind of defeats the object of trying for a clean surface! I then popped them in the warm oven for two reasons…. one is to make sure they are completely dry, and secondly if you mask them while warm, the tape sticks MUCH better. With regard to masking, I put the tape on, and then brush the edges with a riffler file and then you can peel it off perfectly.
Next i gave them a single thin coat of Cerakote. I used a paper strainer as they suggested. Its very thin, but highly pigmented and covers really well. It flash dries in 45 mins, and is handleable in a few hours, but it takes 5 days to fully cure. I was impressed with the ease of application and the finish!
with the hubs now painted it’s time to try something I haven’t done before, and that’s wheel building. I watched a few videos on Youtube and managed to loan a jig off my mate, which actually proved really useful! I got special dispensation to do it on the dining room table as I knew it would take a while and I wanted to be able to sit down!
I was actually surprised how easy it was! I managed to get the correct offset, and up and down and side to side within half a mm.. here they are complete with new bearings and seals.
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ducpainter
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DILLIGAF
Re: Ducati 1000 DS build
«
Reply #80 on:
February 24, 2024, 06:55:54 AM »
Did you use anything like Alodine on the bare aluminum before painting to avoid corrosion?
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buzzer
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Re: Ducati 1000 DS build
«
Reply #81 on:
February 24, 2024, 09:40:12 AM »
Quote from: ducpainter on February 24, 2024, 06:55:54 AM
Did you use anything like Alodine on the bare aluminum before painting to avoid corrosion?
no, Cerakote is a ceramic coating that goes straight on bare metal. It needs a blast profile though using an aluminium oxide grit to get good adhesion. at the same time I did the hubs I did on old water pump body as a test piece... after 24 hours the coating was still quite soft, but after 5 days when it was fully cured it was hard and incredibly scratch resistant. I was VERY pleased with the result!
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ducpainter
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Re: Ducati 1000 DS build
«
Reply #82 on:
February 24, 2024, 10:57:38 AM »
I'm familiar with cerakote, and it would be fine over bare steel. Aluminum, and more so magnesium, are different animals and require a conversion coating to chromate the surface to avoid corrosion under the topcoat. Aluminum begins to oxidize instantly in the presence of oxygen leaving aluminum oxide on the surface.
Don't be surprised if you see bubbling under the coating.
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"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
perspective
is even more amazing than yours."
To realize the value of nine months:
Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”
buzzer
Sr. Member
Offline
Posts: 449
Re: Ducati 1000 DS build
«
Reply #83 on:
February 24, 2024, 11:35:43 AM »
Quote from: ducpainter on February 24, 2024, 10:57:38 AM
I'm familiar with cerakote, and it would be fine over bare steel. Aluminum, and more so magnesium, are different animals and require a conversion coating to chromate the surface to avoid corrosion under the topcoat. Aluminum begins to oxidize instantly in the presence of oxygen leaving aluminum oxide on the surface.
Don't be surprised if you see bubbling under the coating.
people have been using it on bare alloy for years with great results... even the aerospace industry use it on bare alloy. no need for an etch primer, it's designed as a single coat process.
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buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #84 on:
February 25, 2024, 02:05:34 AM »
headlight brackets took some thinking about, but I had plenty of time to do it lying in the sun! thank goodness for the Ipad and Ipencil!. I sent the drawing off to the water jet cutters and they cut them out of some nice 25mm plate, they came out well. I also designed them so i could mount the custom made indicators.
the carbon battery tray came out OK, I initially made an alloy one, but it hung down too low and spooled the lines, so I made the carbon one stepped so the battery can sit in a recess to the side. its going to be tight with the electrics!
Here it is inprofile, not long before i can take it all apart for painting! At this stage its really important to try to mount everything... you don't want to get it all painted/ powder coated and then find you are missing a bracket for say a horn! I also wheeled it around and found that the forks hit the tank... the lock stops are not adjustable on this so I am gong to have to extend them before painting...
I played around for hours trying to decide on high, low, beak type mudguard, but decided in the end to go low with a carbon one... with the advantage of a nice fork brace as well. Just ordered some orange fork gaiters, will see what that looks like!
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buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #85 on:
March 02, 2024, 03:41:09 AM »
one of the few items on the bike that needed real attention was the swinging arm bush and needle roller bearing. it was badly rusted and seized… I checked and the bush is no longer available. I made one out of good quality steel, and case hardened it several times to build up the depth of the hardened layer. I also did a test piece and was pleased that I could not touch it with a file! I have not done case hardening for a LONG time!
I finished welding up the frame and parts. Where I had modified the frame tubes I put an internal tube so it didn’t crush it when I tightened the bolts, then I welded the support bushes on. Then it was off to the powder coaters, along with a big box pf parts to be plated.
Its always stressful pulling an engine apart… you never know what you are going to find! I was really pleased as it came apart. there is no discernable wear on the bore, all bearings are nice and smooth, so its just gaskets, seals, and a new cam chain. I can see why these engines do mega miles, it’s VERY well built!
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stopintime
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S2R 800 '07
Re: Ducati 1000 DS build
«
Reply #86 on:
March 02, 2024, 08:34:48 AM »
What is "case hardening"? Or rather, how is it done?
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237,000 km/sixteen years - loving it
buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #87 on:
March 02, 2024, 10:03:30 AM »
Quote from: stopintime on March 02, 2024, 08:34:48 AM
What is "case hardening"? Or rather, how is it done?
it's where you heat steel to cherry red (720 ish degrees) and then immerse it in a carbon rich compound. the steel absorbs some of the carbon into its structure. you do it a couple of times then quench it to harden it. it gives a very hard layer to the steel.
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stopintime
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Re: Ducati 1000 DS build
«
Reply #88 on:
March 02, 2024, 10:45:16 AM »
Is that some of the same principle as when iron becomes steel?
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237,000 km/sixteen years - loving it
buzzer
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Posts: 449
Re: Ducati 1000 DS build
«
Reply #89 on:
March 04, 2024, 01:24:27 AM »
Quote from: stopintime on March 02, 2024, 10:45:16 AM
Is that some of the same principle as when iron becomes steel?
yes, if you add carbon to iron it becomes steel, the more carbon, the easier it is haren by heating and quenching. Lots of components are case hardened... it has the advantage of a hard wearing surface, with a core that's not brittle.
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