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NC24 rebuild - Now for sale: see first post

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nowhere.elysium
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PostPosted: 09:46 - 25 Jun 2014    Post subject: NC24 rebuild - Now for sale: see first post Reply with quote

I need to sell this. I simply don't have the time to work on it now, and I need the garage space. If anyone's got a sensible offer, I'm all ears - I've got most of the bits needed to get this roadworthy now, barring tyres. It has the makings of being a very good bike, it just needs a level of time and attention that I simply cannot give it.

The good: decent collector box, engine spins up happily, tank isn't perforated, all corrosion is light surface rust, forks are decent (just want the seals replacing, which are included).
The bad: the throttle linkage is still stiff as buggery. This wants sorting properly - I've not had the time to do anything much about it, aside from diagnosing the issue. Realistically, it can be sorted by soaking it in a bucket of something volatile for a day or two, I reckon. The fairings are pretty bad - they're cracked completely along one side, and would need some serious work (as well as some mounting bits) to refit them properly.

Things that come with the bike:
I've got a set of brake lines that should fit it, along with a new set of fork seals and brake pads. There's also a set of replacement plug caps to go on there, and a spare top yoke. The air filter and oil look to have been new when the bike was laid up, so I wouldn't be too worried about that. I've also got a set of Abba stand adapters for it.

Things that the bike needs:
Tyres, fuel hoses, radiator cap, stem nut washer and a significant amount of TLC.





I've acquired an NC24 in remarkably good condition. The fairings are shagged, but the engine seems sound, as does the state of the wiring.

More to the point, the collector box and downpipes are in good nick.

https://farm3.staticflickr.com/2924/14500098331_dc2d9f9f68_b.jpg

So far, it wants a new radiator cap, new tyres, new fork seals, new throttle and clutch cables, a clutch lever, a battery, and a starter solenoid. I've got one of the tail fairing pieces, and from that I've managed (through the magic of 3D scanning) to work up a rough 3D model of it. I'm intending to machine a mould from that, so I can start prototyping replacement pieces for it.

https://farm4.staticflickr.com/3837/14480402406_bf7ea37ca9_b.jpg

On the left is the original 3D scan of it, and on the right are the initial attempts at tidying it up. Although it's not very visible in this picture, there are bands that run the length of the two pieces - that's to do with the way that the 3D software I'm using fits a mesh across a series of contours. The black stripes are the contour slices taken from the initial scan. I'm going to make a proper point of tidying up the contours before I even think about machining out the first moulds.

What I'm most likely going to do is design a customised set of fairings that eliminate the rear seat entirely - the front fairings are pretty comprehensively knackered, so I'm likely to just do away with them entirely, leaving me something of a free hand when it comes to the aesthetic of this bike. I know that the purists are going to whinge at me about it, but given that I got the bike for a paltry sum, I might as well make what I want of it, as opposed to trying to restore it to its original form. Once I've gotten the hang of putting together fibreglass fairing pieces, I may even go the whole hog and make carbon fibre ones.

This is also quite likely to be the bike that the digital dash goes on to. The SV had an inordinately complex setup going to its dash from stock, and I really couldn't be bothered to try and decode that much signal data, given that I was using the bike day-to-day. This one is a pure project bike for now, so I should have enough time to work on it properly - the only real constraining factor is money.
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Last edited by nowhere.elysium on 12:39 - 10 Mar 2015; edited 1 time in total
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chris-red
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PostPosted: 12:02 - 25 Jun 2014    Post subject: Reply with quote

3d print a mould then fibreglass/carbon panels?
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nowhere.elysium
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PostPosted: 12:36 - 25 Jun 2014    Post subject: Reply with quote

chris-red wrote:
3d print a mould then fibreglass/carbon panels?

CNC routing a mould. 3D printing would be slow and heavy.
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Carvel
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PostPosted: 22:15 - 25 Jun 2014    Post subject: Reply with quote

Finally!!

She's rough but it's a Honda so it'll be sweet again without too much hassle.
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Robby
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PostPosted: 21:41 - 27 Jun 2014    Post subject: Reply with quote

Carvel wrote:
Finally!!

She's rough but it's a Honda so it'll be sweet again without too much hassle.


It's an NC24. He's in a for a world of pain.

Some projects start with a heavy degreaser. This one needs a dose of weedkiller first.
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TUG
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PostPosted: 23:54 - 27 Jun 2014    Post subject: Reply with quote

Nice! Thumbs Up Mr. Green
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Nick 50
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PostPosted: 18:18 - 28 Jun 2014    Post subject: Reply with quote

Robby wrote:
Carvel wrote:
Finally!!

She's rough but it's a Honda so it'll be sweet again without too much hassle.


It's an NC24. He's in a for a world of pain.

Some projects start with a heavy degreaser. This one needs a dose of weedkiller first.


I got a NC24 for cheap which had been stood for 3 years. New plugs, battery and fresh fuel and it fired up instantly.
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nowhere.elysium
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PostPosted: 17:51 - 07 Jul 2014    Post subject: Reply with quote

Well, got a bit more time to play with the NC yesterday, pre-SE meal.

As Robby has noted, this machine was somewhat lacking in terms of its previous storage location. Aside from the many, many metres of dead brambles I've had to pull from the machine, it looks like it's been subject to several spider extinction cycles.

https://farm4.staticflickr.com/3892/14597324875_ba18b3da17_b.jpg

Just fitted up the new starter solenoid (the original one was missing). Looks OK, so I decided to pull the battery and hook the bike up to a working one.

https://farm6.staticflickr.com/5577/14410688560_184fc0f4a3_b.jpg

To my delight, there appeared to be some form of forest-floor crust building up on the battery itself. Sort of a dessicated compost. Yum.

https://farm4.staticflickr.com/3884/14595402844_83abee51f1_b.jpg

That's the battery bay's cobweb collection after it'd been cleaned out - there was enough cobweb in there to make an audible ripping noise when I initially pulled the battery, most of which stuck to the battery, hence it not being visible in the previous photo. Suffice it to say that it was minging in the extreme.

Anyway - cobweb bonanza aside, I got the battery attached, and then Robby and I spent a long time trying to find the electrical fault. In doing so, we determined that a) the loom was in very good nick, and b) I'm an idiot. The electrical fault was entirely down to pilot error - I'd bolted the starter solenoid terminals on the wrong way round. Derp.

Once we'd rectified this minor cock up, the bike span over like a good'un, which was gratifying. The spark seems decent enough, although we only know this because it's missing a plug cap, so I've got to get hold of one of these, specifically:

https://farm4.staticflickr.com/3846/14597327205_a1a707b4cf_b.jpg

If anyone's got one going spare, please do give me a shout.

Other than that, the main issues are actually pretty minor: the fork seals have comprehensively shat themselves, which is fun.

https://farm6.staticflickr.com/5528/14595402994_94fdf55f51_b.jpg

This has led to the pads being unrecoverable, which is a bit annoying.

https://farm3.staticflickr.com/2920/14597325355_b2ec81903c_b.jpg

Reminds me of a certain GSXR a few years back, truth be told.

Despite the fact that a lot of the bolts have starting going brown, there's not been any major seizures yet - everything that we've had a go at has come out, although it's been a little reticent on occasion.

https://farm6.staticflickr.com/5493/14596675582_941b878e5d_b.jpg

And on a final note; behold the intact collector box!

https://farm4.staticflickr.com/3914/14595401324_90293ebc26_b.jpg

So, things that want doing:
Change over cables - the new ones are on their way to me.
Unstick the throttle - it's a bit jammed up at the carburettor end, which I'm not looking forward to.
Change over the fuel/breather hoses - radiator hoses and such actually look OK.
Check the tank for leaks.
Buy a radiator cap.
Replace the pads.
Replace the tyres.
Sort the lack of bodywork out.
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gavcarter
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PostPosted: 18:04 - 07 Jul 2014    Post subject: Reply with quote

plug cap https://www.ebay.co.uk/itm/NEW-NGK-Spark-Plug-Cap-Cover-SB05F-Black-With-Resistor-No-8080-Free-P-P-/290777670074?pt=UK_Lawnmower_Parts_Accessories&hash=item43b3b321ba
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Boxing
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PostPosted: 18:05 - 07 Jul 2014    Post subject: Reply with quote

Would love a VFR next year. Cool Thumbs Up
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nowhere.elysium
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PostPosted: 18:08 - 07 Jul 2014    Post subject: Reply with quote

gavcarter wrote:
plug cap
Wrong size. The NC24 uses 10mm plugs. I'm sure I can turf one up on eBay, I was just hoping to be able to scrounge one that someone had lying around, really.
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gavcarter
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PostPosted: 18:08 - 07 Jul 2014    Post subject: Reply with quote

nowhere.elysium wrote:
gavcarter wrote:
plug cap
Wrong size. The NC24 uses 10mm plugs. I'm sure I can turf one up on eBay, I was just hoping to be able to scrounge one that someone had lying around, really.


Same number you show in pic, SBO5F Confused
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nowhere.elysium
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PostPosted: 18:16 - 07 Jul 2014    Post subject: Reply with quote

gavcarter wrote:
Same number you show in pic, SBO5F Confused
You're quite right. Minor point of confusion on my part.

:edit:
Right - the SBs are for 12 and 14mm plugs, and the SD is for 10mm plugs. Given that the NC24 is supposed to use 10mm plugs, I'm slightly mystified as to the presence of the SBs.
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gavcarter
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PostPosted: 18:23 - 07 Jul 2014    Post subject: Reply with quote

nowhere.elysium wrote:

Right - the SBs are for 12 and 14mm plugs, and the SD is for 10mm plugs. Given that the NC24 is supposed to use 10mm plugs, I'm slightly mystified as to the presence of the SBs.


Pull a plug and see what it is, are all caps the same? I have came across, drilled and tapped spark plug holes before, very badly done aswell. It was a single cylinder though so no "odd plug" to give warning.
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Robby
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PostPosted: 19:04 - 07 Jul 2014    Post subject: Reply with quote

nowhere.elysium wrote:

So, things that want doing:
Cover it in bacon
Roll around in grease
Channel you inner pork lord
Fix the bike up and look sad when your wife claims it as her own


I'm liking the idea of keeping it standard more and more. It has the potential to be a good original example.
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MarJay
But it's British!



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PostPosted: 19:28 - 07 Jul 2014    Post subject: Reply with quote

I thought it was only the NC30 that used tiny 10mm plugs?
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Shaft
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PostPosted: 20:11 - 07 Jul 2014    Post subject: Reply with quote

If it helps, I've found a couple of different plugs listed as standard, they are all 10mm thread/16mm hex.
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nowhere.elysium
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PostPosted: 21:01 - 07 Jul 2014    Post subject: Reply with quote

C8EH-9s are the listed plug, which is a 10mm plug. The plug caps that are on the bike don't look like they're the stock units, so I'm a little bit nervous at this point. Best case scenario is that they're just oversize caps. Mediocre case is that all the threads have been recut for 12mm plugs. Worst, I'm looking at frankenplugs.
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gavcarter
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PostPosted: 21:07 - 07 Jul 2014    Post subject: Reply with quote

nowhere.elysium wrote:
C8EH-9s are the listed plug, which is a 10mm plug. The plug caps that are on the bike don't look like they're the stock units, so I'm a little bit nervous at this point. Best case scenario is that they're just oversize caps. Mediocre case is that all the threads have been recut for 12mm plugs. Worst, I'm looking at frankenplugs.


More than likely over sized plug caps, so be sure to keep the daft threaded bobbles off the plugs you take out!
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spikenipple
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PostPosted: 18:36 - 08 Jul 2014    Post subject: Reply with quote

Just for reference, the NC21 that my mate has just picked up has 10mm plugs.
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Nick 50
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PostPosted: 20:22 - 08 Jul 2014    Post subject: Reply with quote

I'll have a look in the garage in the morning to see if I have a plug cap lying about. My NC24 came with a few boxes of spares, but can't remember seeing one, but no harm in double checking.

Good progress though Thumbs Up
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nowhere.elysium
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PostPosted: 11:43 - 24 Jul 2014    Post subject: Reply with quote

Got some replacement plug caps on order, along with a radiator cap. I'm going to check over the tank for leaks, and may even get it fired up and running by next week. Still got to order some fork seals though, and I need to sort out the throttle cables.
Pictures will follow.
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nowhere.elysium
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PostPosted: 08:13 - 29 Jul 2014    Post subject: Reply with quote

Well, it would appear that the throttle linkage is seized, so the carbs have had to come off. The process of removing said carbs is vaguely documented at best, and I found myself slightly concerned by the fact that the best rundown of it used the phrase "...then lever them off with a length of wood..."

Yup, that's gonna want cleaning up.
https://farm4.staticflickr.com/3904/14790043763_9c6e328a57_b.jpg

The offending seized part:
https://farm3.staticflickr.com/2909/14769846572_fd4b95f72c_b.jpg

The rear of it is totally inaccessible in situ - hurrah for overly-compacted construction.

So anyway; off with the tank and the airbox:
https://farm4.staticflickr.com/3889/14790042213_4a9c158ff7_b.jpg

You can just about see on the left hand edge of that picture - there's a bracket there, with the cols mounted to it. Only one description of removing the carbs actually mentioned the fact that this needs to be removed - good thing I read around the subject a bit before attempting it, I reckon.

https://farm3.staticflickr.com/2896/14583535568_cff49e4340_b.jpg
The bracket in question. Two bolts to remove that, four more to free the coils off for added accessibility, and a shit-ton of cobwebs and dead foliage for good measure.

Still, using the 'pry off with a chunk of tree' method seemed to work well, since they came away from the bike with a relative* minimum of fuss.
https://farm4.staticflickr.com/3921/14767811014_832853d767_b.jpg

*Relative to every other carb bank I've had to sod about with in the recent past. On a scale of mildly vexatious to bastard hard, this one's somewhere around the realms of 'irritating'. The GS' carbs are doing gleeful cartwheels somewhere over the event horizon of 'fuck you, I won't do what you tell me'.

https://farm4.staticflickr.com/3913/14790042733_2d328a7c3e_b.jpg

The yawning chasm that is the spiders graveyard, after the initial cleanup. I couldn't stomach the 'before' photos, so you'll just have to stick with the 'after' one. The manifold rubbers are a bit on the stiff side, as is to be expected. There's also a bit of a scummy buildup on the front right cylinder - I'm not sure why that's the case, but I'm guessing that a closer inspection of the carb may reveal some information.

I'll be working on the carbs today, so with a bit of luck I'll have more progress to report later on.
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P.
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PostPosted: 08:21 - 29 Jul 2014    Post subject: Reply with quote

nowhere.elysium wrote:
Reminds me of a certain GSXR a few years back, truth be told.


Shifty

Progress is good sir Thumbs Up Thumbs Up
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MarJay
But it's British!



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PostPosted: 08:31 - 29 Jul 2014    Post subject: Reply with quote

I suggest you vacuum all the crap out of the space between banks of cylinders... There is already a bit gone into the front left intake!
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