Building my Jota
- Thread starter sideshow
- Start date
A very smart way of doing it!sideshow said:
In my last job, I got involved with a joint project with a company called 'Protiq'. They are a sub-company of Phoenix Contact, the massive connector company. They equipped a whole factory with the capability to 3D print in pretty much any material that is currently 3D printable. Their aim is to offer a complete end to end online 3D print solution. You basically upload your STEP file, spec the parameters of what you want, material etc and they provide you with a quote. This included metallic options, so you could just bolt on what you get back!
Take a look, it's pretty cool ...
https://www.protiq.com/en/
sideshow
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motoddrob said:This is how I did my caliper adapters. I made the pattern out of 6mm and 8mm perspex with a 2mm sliver of styrene to give me 16mm.
The calipers I had were the 65mm spacing brembos.
I sent the pattern to a mate who has a precision engineering business. Finished product by CNC mill
20200821_144746 by Rob Berryman, on Flickr
20200821_144808 by Rob Berryman, on Flickr
20200821_144951 by Rob Berryman, on Flickr
That?s a really clever idea with the Perspex.
I think with a reputable German company like Protiq, you would be fine. I'd still talk with them to make sure if the IP was super sensitive. The problems come more from the rapid prototype companies that simply subcontract to 3D printing houses in China. There's potentially a lot of exposure there!sideshow said:
motoddrob
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- S/W Australia
Steph said:
Hi Steph,
sort of hand made. I scribe the shape I'm after onto 2mm styrene sheet and shape by hand and then use it to router out the shape in perspex using a straight cutter with bearing.
In this case 2 separate shapes then glue them together using Methaline dichloride. Done.
Being a Model Maker for most of my working life makes it an easy job. Lucky to have a mate with a multi axis mill to convert it to ally. Cost me a carton of beer.
Dellortoman
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motoddrob said:
I'd ask for the carton of beer back if I were you. He didn't follow your pattern very closely.
sideshow
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\Kickback said:
the orange.... it just felt right, I guess the first bike you see of a brand, leaves an impression on you, The first Laverda I saw was an SFC, it was Orange, and thats just how its meant to be. My fairing and tank and seat unit are all SFC shaped or inspired? And so Orange it had to be me. I dont think every laverda has to be orange, but my bike just screams out to be so.
motoddrob
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Dellortoman said:I'd ask for the carton of beer back if I were you. He didn't follow your pattern very closely.
I gave him some license
Definitely worth a carton of top shelf piss
steph
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- Torgny, Belgium
motoddrob said:
(bigthumb)
I unfortunately do not have your experience but I will try to follow your procedure.
I have to make P08/300mm disks adapters.
motoddrob
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Steph said:(bigthumb)
I unfortunately do not have your experience but I will try to follow your procedure.
I have to make P08/300mm disks adapters.
If I can help out at all let me know
steph
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- Torgny, Belgium
motoddrob said:
Roger that .. cool
sideshow
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wow so after an age of what seems like I haven't achieved anything, I have had a positive week. Although jobs are getting ticked off the list, more jobs are being added swiftly.
I ran into things that I hadn't really thought about with the new CRS front forks, they have machined them only for a 20mm to 17mm spindle, No biggie I should have asked for more info when I was researching them, and it makes me feel like a dumb ass for not asking..... sometimes the excitement of new parts gets in the way of me asking the correct timely questions , but now that hiccup has presented itself I have a solution. I originally wanted to use the front spindle from my Jota but it was over sized in a few ways, length and girth... when would that be a problem in another context ! So plan B, I decided to use the existing one to turn down to fit , I should have taken photos, but the metal on the threaded end, when I machined from 20mm to 17mm was pretty eaten up ( the spindle was randomly too long too), once I started turning it, It looked like a large turnbuckle pin from a 50 meter yacht that had seen 3 years of electrolysis , the metal was really porous , so it has now become the mock up spindle until I make a new one...... The next issue was the forks have odd dimensions in the lowers, so the spoked wheel and discs had no space between the lowers and the discs, so after talking with Gijs and Q , I went with skimming 1mm of the mating face of the disc carrier to the wheel hub, as I am using stainless discs they are 5mm thick, there was a bit of lip as well of the carrier to the disc, so I machined .25mm of there and gained myself 1.25 mm each side of the discs, which lets me spin the wheel freely. The next thing is I need to do a bit more work on the brake adaptor brackets, but that is in the next few days.
In the mean time the carbon version of the Smiths rev counter bracket came out insanely good, it weighs absolutely nothing. Once I have worked out a price i will do a limited run of 10-20 if anyone is interested. On this one I didn't do all the cut outs as per the smiths one, but can easily do so, this one is made to fit my Motogadget chrono classic and its bucket .....
Late this afternoon at work it was was a bit of a shopping day as well, I thought stuff it, I have been at work 10 out of 14 days of my vacation, time to play up a bit . ( no complaints about working in my holiday, but that means I can justify stealing an hour here and there for bike stuff ) I managed to find a Brembo PS13 rear brake master cylinder, I managed to find one in France in dark grey/ titanium, which matches my new brake callipers. Then I found in Italy the push rods that go with it, so I bought a couple of those and some exhaust manifold gaskets for my Ducati at the same place along with a few other bits and bobs .. basically I just loaded the shopping basket up until the shipping price changed, and then took one off two of the things out to make the shipping cost go down to the minimum rate.
So in all a successful week, hopefully next week battery box will be buttoned down, and then I can look at brake and clutch reservoirs and a bunch of other stuff.... the list goes on, sometimes its great fun, other times its a chore, especially where Im not so confident. I mentioned to Q the other day, if my bike was a sail boat , I would know exactly what to do, and could give solutions to issues that arrive quite quickly.... its frustrating sometimes not knowing bikes like i know sail boats
a big thanks to Marnix and Q and Gijs, they often answer messages and mails at odd times of the day, when my head is in the zone of my bike, you guys are great at always giving positive answers.
I ran into things that I hadn't really thought about with the new CRS front forks, they have machined them only for a 20mm to 17mm spindle, No biggie I should have asked for more info when I was researching them, and it makes me feel like a dumb ass for not asking..... sometimes the excitement of new parts gets in the way of me asking the correct timely questions , but now that hiccup has presented itself I have a solution. I originally wanted to use the front spindle from my Jota but it was over sized in a few ways, length and girth... when would that be a problem in another context ! So plan B, I decided to use the existing one to turn down to fit , I should have taken photos, but the metal on the threaded end, when I machined from 20mm to 17mm was pretty eaten up ( the spindle was randomly too long too), once I started turning it, It looked like a large turnbuckle pin from a 50 meter yacht that had seen 3 years of electrolysis , the metal was really porous , so it has now become the mock up spindle until I make a new one...... The next issue was the forks have odd dimensions in the lowers, so the spoked wheel and discs had no space between the lowers and the discs, so after talking with Gijs and Q , I went with skimming 1mm of the mating face of the disc carrier to the wheel hub, as I am using stainless discs they are 5mm thick, there was a bit of lip as well of the carrier to the disc, so I machined .25mm of there and gained myself 1.25 mm each side of the discs, which lets me spin the wheel freely. The next thing is I need to do a bit more work on the brake adaptor brackets, but that is in the next few days.
In the mean time the carbon version of the Smiths rev counter bracket came out insanely good, it weighs absolutely nothing. Once I have worked out a price i will do a limited run of 10-20 if anyone is interested. On this one I didn't do all the cut outs as per the smiths one, but can easily do so, this one is made to fit my Motogadget chrono classic and its bucket .....
Late this afternoon at work it was was a bit of a shopping day as well, I thought stuff it, I have been at work 10 out of 14 days of my vacation, time to play up a bit . ( no complaints about working in my holiday, but that means I can justify stealing an hour here and there for bike stuff ) I managed to find a Brembo PS13 rear brake master cylinder, I managed to find one in France in dark grey/ titanium, which matches my new brake callipers. Then I found in Italy the push rods that go with it, so I bought a couple of those and some exhaust manifold gaskets for my Ducati at the same place along with a few other bits and bobs .. basically I just loaded the shopping basket up until the shipping price changed, and then took one off two of the things out to make the shipping cost go down to the minimum rate.
So in all a successful week, hopefully next week battery box will be buttoned down, and then I can look at brake and clutch reservoirs and a bunch of other stuff.... the list goes on, sometimes its great fun, other times its a chore, especially where Im not so confident. I mentioned to Q the other day, if my bike was a sail boat , I would know exactly what to do, and could give solutions to issues that arrive quite quickly.... its frustrating sometimes not knowing bikes like i know sail boats
a big thanks to Marnix and Q and Gijs, they often answer messages and mails at odd times of the day, when my head is in the zone of my bike, you guys are great at always giving positive answers.
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piranha-bro2
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That carbon bracket looks a treat, Todd. How do you (or they) fabricate something like that? It's not from a mould is it?
sideshow
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Piranha Brother 2 said:
Hi Q, a mate of mine Nipper, made it, we thought of several ways of doing it, this is version one, it's made on a male mould or former rather, The carbon is cut to shape, then vacuumed down over the former/mould, and then trimmed to shape.
Version two will be made on a female mould, so the smoothest face is facing out when mounted. We made the former by bending some stainless to the same angle as the smiths bracket. It was pretty easy, the length of the version two mould/ former will be dictated by how many brackets we want to make at a time, so probably about 1 meter long , which means we can lay up 10 at a time, or less if we only want one or two.
The photos show a hastily clear coated bracket, with mounting holes that I had just drilled. But the bracket is actually really really nice
sideshow
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So onto version 2 of the brake adaptor bracket, version 1 didn't quite fit, but it was a good starting point. I actually found that with the brake caliper and the wheels Im using, I had to make the caliper adaptor twice as thick in some places. Luckily I had 4 printed, so I could use two together for one side, I then needed to contour the back a bit to be able to have the fork mounting lugs be in the clear. Once that was done, we re-drew the adaptor and sculpted it a lot more. Yesterday we printed the new model and hey presto she fits. A little more tweaking needs to be done, more for aesthetics than anything, But that will be almost how the finished product looks. Im looking at machining these in Grade 5 TI. Lets see if that becomes a reality !
