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NGneers NC30 build thread (8 years + in the making)

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ligurt

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Re: NGneers NC30 build thread (8 years + in the making)

PostWed Nov 29, 2017 9:05 pm

I'm working on my vf400f racing bike and am planning to lighten the flywheel and generator. Could you please measure the outer diameter of the generator and the inner diameter of the flywheel? Infact I'm wandering if a swap is possible or even fitting the gsxr1000 k5 generator that some mount on their bikes. In addition it would be very helpful to know the flywheel/generator exact weight.
Thanks
Pietro
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NGneer

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Re: NGneers NC30 build thread (8 years + in the making)

PostFri Dec 01, 2017 7:16 pm

ligurt wrote:I'm working on my vf400f racing bike and am planning to lighten the flywheel and generator. Could you please measure the outer diameter of the generator and the inner diameter of the flywheel? Infact I'm wandering if a swap is possible or even fitting the gsxr1000 k5 generator that some mount on their bikes. In addition it would be very helpful to know the flywheel/generator exact weight.
Thanks
Pietro


Ligurt - as requested.
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The GSXR conversion is a tried and tested modification but you will need a new flywheel cover from Rick Oliver (http://www.400greybike.com/files/new%20stocklist.doc) and apparently "GSXR rotor weighs 600g vs 1.8kg for the stock NC30 unit and gives greatly improved pickup".

Hope that helps :peace:
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NGneer

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Re: NGneers NC30 build thread (8 years + in the making)

PostWed Dec 06, 2017 9:22 pm

Free top tip of the day. Whilst cleaning your Apple keyboard is not a bad thing, getting distracted and allowing Cillit Bang to leak in down the side of the keys is a BAD thing!!! Despite my best efforts at drying out and cleaning – it was buggered! Dohhh! :oops:

One quick Amazon moment later and thankfully a replacement has arrived today, hence I am back up and running on line.

Anyway, having spent a couple of weeks being busy taking things apart, I really wanted to feel like I was starting (even in a small way) to put something together for a change. As such I chose on the starter motor and began by errrmm ….taking it apart. :?

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Having done that the casings were degreased and treated to a good session with the soft wire wheel and then masked up.
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Casings were then given a couple of coats of primer….

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…before getting a couple of coats of paint and clear coat.

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Loosely rebuilt for the photo (new seals coming with my CMSNL order) and it’s not too bad a job.

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Only a little bit – but nice to feel I was “building”, even if it was only for a short while ;)
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NGneer

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Re: NGneers NC30 build thread (8 years + in the making)

PostWed Dec 06, 2017 9:50 pm

Having scratched my ‘build itch’ for a while it was back to component stripping and cleaning. Amongst my spares I had a spare water pump, thermostat and engine water pipes.

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These were acquired when the third bike was the plan, so I thought I would open them up and see what they were looking like with a similar plan for cleaning and spraying. I think it is safe to say these are going to need more than a quick wire brush and blow over with the rattle can!!! :o

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Having see the state of this set I turned to the ones that had been on the bike when it was stripped and whilst not perfect, they are certainly in better condition.

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A bit of mild cleaning and the second set were (whilst still not perfect) a lot better and looked to have a lot more potential for cleaning up and re-using.

I looked at these bits and also the various engine casings etc I have laying around my garage and realised I was going to have a few sessions with something like a bucket of petrol and set of brushes. However, the next day at work I had to visit the “Wheel and Tyre bay” and spotted their cleaning setup. A few polite questions later and the management were happy to accommodate the “Crazy Englishman” and were happy to let me loose in there with a ‘few’ bike bits :whistle:

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Mwahahaha! A spirt wash bench with pump and brush, hot spirit bath, wheel wash machine and just out of sight … an ultrasoninc bath you could nearly fit an engine in – result. :peace:

After a bit of scrubbing it was really quite amazing how @25 years of oil reside etc could be shifted. :shock:

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Really nice to have the use of this facility, and I am sure it will get used extensively…but I am still toying with the idea of getting everything soda blasted and repainting the engine, along with other bits as part of the rebuild.

Anyone ‘been there and done that’ got any top tips if I go down that route?
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NGneer

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Re: NGneers NC30 build thread (8 years + in the making)

PostThu Dec 07, 2017 5:03 pm

Ok guys/girls, I need guidance from the wise and sage out there with regard to Main Bearing shell selection.

The code on my crank case, behind the clutch (Main bearing housing size) is ABBB and the Crank (Main bearing journal size) are all B2.

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According to the Haynes and the Honda service manual this would suggest I need new shells with the colour codes of Green, Brown, Brown, Brown.

However, having trawled the internet and 400GB for advice etc I managed to stumble across this thread from Ye Olde days suggesting the Haynes and Service manual are wrong: http://retro.400greybike.com/topic.asp? ... C_ID=60762

According to this I should actually be ordering Yellow, Green, Green, Green shells. :?

As this info came from Mike Norman, it has credibility and I can follow his logic with regard to the relationship between crank case hole, crank shaft diameter and corresponding shells to suit. I just wondered if others have followed this revised information with positive results and can confirm my thought process that with the codes I have (ABBB / B2 B2 B2 B2) I should be going for Yellow, Green, Green, Green main bearing shells.

Any thoughts? :pray:
Last edited by NGneer on Tue Dec 12, 2017 11:05 am, edited 1 time in total.
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CMSMJ1

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Re: NGneers NC30 build thread (8 years + in the making)

PostThu Dec 07, 2017 7:11 pm

Lovely thread Ian my old china!

As you'll probably have to source your shells from Mike I;d get on and ask him directly.

crack on lad
IMPERATOR REX ANGLORUM

The V4 is the law..

NC30 - No9 > My old mate
CBR600F4Sport - trackbike
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NGneer

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Re: NGneers NC30 build thread (8 years + in the making)

PostFri Dec 08, 2017 9:16 am

Hello Mark

Hows the familly.....and good old No9 ;)

I was going to drop Mike a line but figured he had his plate full at the moment with his latest round of back surgery plus most of his local area currently going up in flames. I am not in a rush so might catch up with him in due course or tap into Ricks wealth of knowledge.

Good to see you are still around mate. I am thinking about trying to mesh a trip back to the UK next year with one of the Classic Track Days at Cadwell...you potentialy up for it?
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CMSMJ1

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Re: NGneers NC30 build thread (8 years + in the making)

PostFri Dec 08, 2017 10:02 am

NGneer wrote:Hello Mark

Hows the familly.....and good old No9 ;)

I was going to drop Mike a line but figured he had his plate full at the moment with his latest round of back surgery plus most of his local area currently going up in flames. I am not in a rush so might catch up with him in due course or tap into Ricks wealth of knowledge.

Good to see you are still around mate. I am thinking about trying to mesh a trip back to the UK next year with one of the Classic Track Days at Cadwell...you potentialy up for it?


All good thanks mate :) Been a while and you should, of course, get back to catch up the Cadwell session. I'm in :)

No9 is doing alright, in a state of stasis as I don;t have any workshop facilities to do anything decent. He is still ready to rock though and is as dependable, sweet handling and generally lovely as ever - a top bike :) Just needs the kind of rebuild you are sharing with us here.

As soona s I move house, again, then the prime feature needed is a huge workshop and then I will be getting into the rebuild as the moto deserves. Saying that, I am not convinced about riding on the roads any more so delivering something that can hold with the rapid bikes on tracks might be the way forwards.

family wise - young Stanley is 5 in January - he likes bikes - recognises most of the motogp/2/3 field

"Look daddy - it's Bastianini on the 33 machine"

I'll be bringing him to Cadwell :) :grin:
IMPERATOR REX ANGLORUM

The V4 is the law..

NC30 - No9 > My old mate
CBR600F4Sport - trackbike
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