NF Mighty NF forum 2016x>


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1
Newbies say hello / Re: Just saying hi
« Last post by banquo on November 27, 2022, 09:00:36 am »
Welcome Paul,
Sadly, the forum has fallen into disuse, as most prefer the ease of our Facebook group. I have kept this alive, as it serves as a repository for a lot of the older technical stuff, although even that has suffered from bad links of photos to defunct hosting sites. The links section is useful, and will direct you to other useful information.
No doubt this will die eventually: we lost our first forum and content when the hosting service disappeared overnight, and as thereís no backup service, when itís gone itís gone. You canít expect much from a free service!
I use Heidenau tyres which suit the look and performance: another popular choice for the more speedy of our members is the replacement for the Dunlop TT100, whose name escapes me for now.
Hope you get as much enjoyment from yours, as I have from mine!
2
Parts and Service / Re: rubnning rich
« Last post by Gaffertape on November 27, 2022, 08:09:22 am »
Had a similar issue with mine  when i first got it  years ago , it was the choke  cable seating at the carb , the cable wasnt returning the plunger fully , i replaced the cable and adjusted it , no problem since
cheers
Ric
3
Newbies say hello / Just saying hi
« Last post by Paul Gasson on November 17, 2022, 05:46:43 pm »
Hello all,

I am a new owner of a military Nuovo Falcone made in 1973 apparently. The previous owner passed away and the family offered it for sale, having been stored for around 10 years. I have cleaned the fuel system, replaced some carburettor parts, fitted a new battery and got it mobile. I have ridden many British single 4 stroke machines so no problems with it. Probably needs new tyres as itís still running on the originals that have only done 13000 km, but being marked 73, they are probably past their best!
This is just to introduce myself and find out if this forum is actually used or if itís just a resource of historical information. I had a skim through and read that some have moved to FB, which is somewhere I avoid.

Happy riding, Paul in the UK
4
Parts and Service / Re: rubnning rich
« Last post by guzzied on October 03, 2022, 11:49:24 am »
thank you, I'll have a look.
5
Parts and Service / Re: rubnning rich
« Last post by banquo on October 03, 2022, 11:47:08 am »
Could be any number of things.
The only adjustment is the pilot jet which has little influence above tickover.
When my plug has fouled with soot, it's usually been caused by failure of the coil (twice) and condenser (once).
If you're sure it's carburettor, the first thing to check is the enrichener plunger. There's a rubber seal at the bottom which is supposed to stop fuel passing except when the enrichener is open. The rubber hardens and perishes, and can then allow fuel to pass even when the enrichener (choke) is closed.
Obviously, make sure the cable for the enrichener is seated and adjusted correctly, so the plunger is fully down.
That's the most likely cause.
6
Parts and Service / rubnning rich
« Last post by guzzied on October 01, 2022, 11:55:52 am »
my NF seems to be running rich; The spark plug sooted up and stopped sparking until I cleaned it; Is there a mixture adjustment on the carb or could it be a worn needle?   Many thanks for any info,
7
Engine and Transmission / Re: NF Compression test figures.
« Last post by Rob vW on September 21, 2022, 09:59:17 pm »
Have a look & see if the cylinder head is leaking. The bike will run, but you will get a distinctive clack at the point of leakage.

Nip up the 4 big bolts to 32nm. Ride the bike. Simples!

You might want to check the valve clearances while you are at it.
8
Newbies say hello / Re: newbie of a certain age
« Last post by banquo on September 17, 2022, 10:45:12 pm »
Hi Warna, and sorry for the VERY long delay in welcoming you to our forum.
Sadly, there's not much traffic on here these days, and so I do not check for posts as often as I should....
The plug won't be black because of the heat grade of the plug. B6 or B7 are normal choices, but sooting can be caused by many things.
In my experience over the past 20 years, the most likely causes are the rubber sealing face of the enrichener plunger, but the worst cases have actually been caused by ignition problems.
The last two times I have had serious sooting problems have been caused by the coil breaking down (I replaced it with a Lucas from BL Mini) and failure of the condenser.
Hope that's some help in diagnosing your problems, and apologies again for the delay!
9
Engine and Transmission / NF Compression test figures.
« Last post by banquo on September 17, 2022, 07:17:13 pm »
Hi Il Ferrone, and sorry for the delay in replying.
Unfortunately, most people have deserted the forum in favour of Facebook, so there are not many people to answer you.
I have no idea what the compression figures should be, but your numbers do seem very low, and the increase with oil does suggest an issue with rings or bore, as I think you are suggesting. However, I don't see that being related to noise.
Excessive noise is most likely valve gear: mine was a worn inlet rocker, almost inevitable if you don't have the extra oiling modification.
I'd suggest you start by lifting the rocker box, and checking the condition of the rocker face.
See my post on that for details.
Black smoke? Check the face on the enrichener plunger. If perished, it will allow excess fuel, especially at low rpm.
10
Newbies say hello / photos
« Last post by banquo on September 17, 2022, 07:03:55 pm »
Sorry for delay in replying. There's so little traffic on here now, I don't visit as often as I should..... :-[
This (free) forum hosting service doesn't support photos.
It's necessary to upload your photos to a service that supports sharing (e.g. Flickr) and include a link to your photos in your post.
If you click on the icon for 'insert image' when composing your post, you can paste the link into your post
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