NC differences

[arsey30]

I am sure its been done to death before, so I don't want to know what's best, just the differences in frame and engine on the NC24 and NC30.
I have some idea about the 30 and 35, but the 24 interests me.

Thanks,

Dave.

[Neosophist]

Well, firstly, theres a guy on here who has an NC24 engine in an NC30 frame :D Which is pretty cool

It is the same NC13E engine but with a few differences.

Mainly that the NC24 has a traditional 180deg firing order so it sounds more like the VFR750 and 800's than the NC30/35. This also means it has 4 ignition coils intead of 2.

http://www.youtube.com/watch?v=OCt7DiVzjs0" onclick="window.open(this.href);return false;

You can hear one running there and being taken for a ride...

The valves use the traditional locknut / adjuster design instead of shims.

Power-wise it makes the same power as the NC30.

Engine: NC13E Watercooled, 4 stroke, DOHC4, 16 valve, V4
Displacement: 399(cm3)
Bore x Stroke: 55.0 x 42.0 (mm)
Compression Ratio: 11.3:1
Maximum Power: 59 / 12,500 (ps / rpm)
Maximum Torque: 4.0 / 10,000 (kg-m / rpm)

Carburration:

CV VDE2 carbs jetted to 115 all round.

Interesting to note is that the HRC NC30 sliders are the same as the stock NC24 sliders, in that they have the rounded bottom and two air holes to improve throttle response.

Swingarm is single sided elf but with 4 bolts like the larger VFR750's. The brake line also runs through the swining arm..

The frame, forks and brakes are all 'older style' than the NC30, with it having 2 piston sliding calipers, 37mm spring / air / oil forks and 130/70/18 100/90/16 tyres. Does have 276mm floating discs tho.

It also has a Cushdrive! something thats kind to the chain :)

Doesn't have the sprag type clutch of the NC30 but the outer baskets the same as the 30 so I can't see any reason why It wouldn't fit!

Gearing is interesting.

15/45.

Gearbox Ratios:-
1st: 3.307
2nd: 2.352
3rd: 1.850
4th: 1.545
5th: 1.333
6th: 1.227
Reduction Ratio: 2.117/3.000 (Primary / Secondary)

It'll pull to the redline in 6th (13,500rpm) so thats what? 130mph'ish.

http://www.youtube.com/watch?v=8ODFsHigOXU#t=1m04s" onclick="window.open(this.href);return false;

As can be seen here between 1m04 and 1m30s

Good news is that the NC24's dont' fetch hardly anything compared to the NC30, 35's and they make the same power, are great fun to ride and the 16/18" wheel combo makes it really fast to ride round the twisties.

The major downfall is the exhaust system.. the collectobox sits underneath the sump and tends to rot away. Changing it means taking the engine out to get the rear pipes off.. not difficult but scares most ammatures away.

If theres anything else or specific you need to know, just ask :-)

http://www.youtube.com/watch?v=GgzBiZfOj2k" onclick="window.open(this.href);return false;

Heres a good ride :-)

[spooky]

Nieo as usual is first to answer.

nc24 is taller, not as bad on the wrists,

and its faster,,,,

[Neosophist]

Nieo as usual is first to answer.

nc24 is taller, not as bad on the wrists,

and its faster,,,,

Haha.. of course :D

Oooh.. taller. yeah erm the wheelbase is longer than an NC30!

Frame ID: NC24
Length: 2.010(m)
Width: 0.690(m)
Height: 1.125(m)
Wheelbase: 1.375(m)

[arsey30]

Thanks for that,
Are new or good secondhand collector boxes available?
Are they required, or is there an after market road legal system that could be used instead?

How does the 180deg crank engine pull compared to the 360? More interested in feel than quoted torque.
Dave.

[Neosophist]

They do come up forsale on ebay every so often and very rarely dave silvers get their hands on them.

One of the guys on here, can't think of his name.. the welder / fab guy makes a Stainless steel collectorbox for the bike.

Most of them are not that difficult to repair if your handy with a welder.. the collars on the end tend to rust apart. I replaced mine with Stainles steel a few years ago.

Well that torque figure is 27.8lbft approx which is same as nc30.

Mine are running well and setup properly with balanced carbs etc and produce 54bhp & 59bhp, pulls like a train from first till 6th. Still have a dead flatspots between 5-6000rpm >.< but apart from that, 6000rpm -> 13,500 is great. Goes nuts after hitting 10,000rpm.

I've never dragged one against an NC30/35 but it does feel a bit faster. Although I should imagine they'll all be about the same.

I have a video of me running the bike through the gears somewhere.. i'll see if I can find it and youtube it ^_^

I can't remember if I said but it also has an oilcooler as standard. The UK NC30 uses the NC24 oilpump. Not sure about the oil cooler, never seen one.

Theres a great condition collectobox and downpipes on Yahoo Auction Japan at the moment.. 13 hours to go and it's at £13.00 no bids ^_^

I'll probably buy it as a spare if nobody else bids