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Old Roland Jupiter 8 restoration

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Re: Old Roland Jupiter 8 restoration

Postby Sam Spoons » Sat Mar 30, 2019 2:27 pm

JIS screw heads used on many Japanese motorcycles too.
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Re: Old Roland Jupiter 8 restoration

Postby DarrenGlen » Sun Mar 31, 2019 4:46 pm

Hugh Robjohns wrote:I'm glad you picked up on the fact that Roland uses JIS screws in its construction -- as does most Japanese equipment.
...

Most JIS screws are identified as such by having a small dot on the screw head alongside the cross (or occasionally a x mark).

yep except I couldn't find that mark on Coras remaining front panel screw, or many others from underneath. Either the marks are not there or the screw surface is so rusted that I couldn't make it out. The "dot" theory is a nice rule but I'm not sure that it was always adhered to.

And so many examples of Jupiter 8s that ive seen close-up have their front crucial 3 panel screws "knackered" and ripped apart for this exact reason...some dood has just shoved an electric drill with a phillips head in there to do them up fast and instead of the drill bit popping up at the end when things get tight, instead it bites hard and then just shreds the screw teeth. Not a good look when you are staring down at it constantly as you play.

Anyways hopefully the article helps some owners to avoid damage in the future with some newfound knowledge!

Cheers Hugh!
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Re: Old Roland Jupiter 8 restoration

Postby Folderol » Sun Mar 31, 2019 5:51 pm

Just looking in again for an update.
Seriously impressed with your continued dedication and close attention to detail.
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Re: Old Roland Jupiter 8 restoration

Postby DarrenGlen » Sun Mar 31, 2019 11:56 pm

Folderol wrote:Just looking in again for an update.
Seriously impressed with your continued dedication and close attention to detail.

Thanks Fold you know what they say ... “The Devils in the Details!”

Unless it is referring to your wife at which point you recalibrate to the other saying “Don’t Sweat the Small Stuff” hehe
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Re: Old Roland Jupiter 8 restoration

Postby nathanscribe » Mon Apr 01, 2019 11:34 am

Thanks for posting this! I restored my old Juno 6 a couple of years ago and had similar issues with screws – ended up finding a local-ish manufacturer who had an excellent range. They're not all the right finish, but for underneath I wasn't so bothered, and I preferred the soft grey of the new end cheek screws to the original bronze-y colour. Compromises, but fair, I think. Glad to see you managed to find something for that front panel, they do need to be right!
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Re: Old Roland Jupiter 8 restoration

Postby DarrenGlen » Wed Jul 03, 2019 5:28 am

Hi all, Coras panel is back from the silkscreen printers !

https://jup8restoration.wordpress.com/2 ... ilkscreen/
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Re: Old Roland Jupiter 8 restoration

Postby Hugh Robjohns » Wed Jul 03, 2019 11:07 am

Fabulous work! :clap: :clap: :clap: :clap: :thumbup:
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Re: Old Roland Jupiter 8 restoration

Postby Eddy Deegan » Wed Jul 03, 2019 11:24 am

Absolutely stunning - a fantastic write-up too! :clap:
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Re: Old Roland Jupiter 8 restoration

Postby desmond » Wed Jul 03, 2019 12:23 pm

You need to video the (eventual) first switch-on and play experience...

It's going to be emotional... :lol: :clap:
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Re: Old Roland Jupiter 8 restoration

Postby blinddrew » Wed Jul 03, 2019 1:04 pm

Great to see a master at their work. :)
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Re: Old Roland Jupiter 8 restoration

Postby Martin Walker » Wed Jul 03, 2019 2:53 pm

Wow - just wow!!! :shock: :clap: 8-)

You may need to seek the help of a therapist once Cora is finally finished Darren.

It's normally after the event that folk cave in to the stress ;)


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Re: Old Roland Jupiter 8 restoration

Postby The Elf » Wed Jul 03, 2019 6:52 pm

:clap: :clap: :clap:
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Re: Old Roland Jupiter 8 restoration

Postby DarrenGlen » Wed Jul 03, 2019 11:56 pm

Martin Walker wrote:Wow - just wow!!! :shock: :clap: 8-)

You may need to seek the help of a therapist once Cora is finally finished Darren.

It's normally after the event that folk cave in to the stress ;)


Martin

Yes but this time Martin after the event I will have a Jupiter 8 to play as therapy :)
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Re: Old Roland Jupiter 8 restoration

Postby IAA » Thu Jul 04, 2019 6:43 am

Wow :headbang: The big switch on is getting close. I’ve really enjoyed following this adventure, what’s your ETA on completion and job done?

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Re: Old Roland Jupiter 8 restoration

Postby DarrenGlen » Thu Jul 04, 2019 2:12 pm

Hey Ian ...thanks for reading Coras blog! Glad you’re enjoying it ...no ETA. I’d like to say ... before Christmas? It’s going to move along faster now that I’m past that big bottleneck of the panel. But the side cheeks are going to take time, they need polishing and finishing and then anodizing. Those workshops can take months to do their job ...Hmmmpf.

And I still don’t know what to do about the hestsink. I just can’t put that ugly beaten up thing on such a thing of beauty... I really need another one to truely finish the job
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