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51
Engine and Transmission / Chain oiler
« Last post by Rob vW on March 28, 2023, 10:10:22 am »
My NF appeared to have an oil leak from the beginning when I restored it and got it back on the road.  When parked up in the garage after a run, a small spot of engine oil would drop onto the floor.  To say the least, it was a bit disappointing.

I spent a lot of time, firstly checking gaskets, and latterly checking seals.

This weekend, I finally discovered the cause of the oil leak.

If you dismantle the left side of the engine and remove the flywheel outer cover, the flywheel and flywheel inner cover, as you have to to get to the front sprocket.  If you remove the sprocket & chain as I did, suspecting the gearbox shaft seal was the culprit, clean the area up with degreaser.  Then have a good look at the underside of the engine breather housing and you will see a small hole.  I am quite sure that this is designed as a chain oiler!

Rightly or wrongly, I have left the hole there just so that it does act as a chain oiler.  But it does explain the oil leak.
52
Newbies say hello / Re: Just saying hi
« Last post by banquo on December 27, 2022, 09:03:44 am »
That’s great Paul: sounds like you’re on the right track.
Oil change intervals are 3000km.
There is a folded paper filter available, but I was warned off it due to adverse effects on oil pressure.
Happy New Year to you too  8)
53
Newbies say hello / Re: Just saying hi
« Last post by Paul Gasson on December 26, 2022, 06:05:43 pm »
Thanks again for the information. I did see a page on an adventure bike forum using some studding, a piece of wood and a large plumbing fitting to remove the clutch ring. I will search the pages here for more information. I have used Millers golden film 20W/50 to get started but the filtration is so basic, I will have to keep changing it. I have used this in other classics with clutches in engine oil and it worked fine. I will see what condition the parts are in when I get it apart shortly. I have the manual you mentioned and have used it a fair amount already, it’s been a great help. I also found a parts list in Italian on the internet that I was able to download and has been useful for part numbers.

I appreciate your time and information to help me get started and Happy New Year to you.

Regards, Paul
54
Newbies say hello / Re: Just saying hi
« Last post by banquo on December 21, 2022, 06:59:53 pm »
Worth having a good look around here before you start Paul. It’s important to avoid the points cam falling out when you remove the cover, generally by tapping it in as the cover comes off. Instructions in the Paul Friday download. There may be a write up on the clutch removal. My friend Tonya made a compression tool using threaded rod screwed into a couple of the casing holes, with a bit of bar fitted over those and a “something” that pressed on the outer cover to get the circlip out.
Make sure you use classic oil without friction modifiers. If a previous owner had used that the clutch will slip. Millers do a classic Mini Oil 20W-50 that’s designed for wet clutches and has zinc for the flat tappets. I use Halfords own, but it’s suddenly rocketed in price, and Millers is actually cheaper from Halfords than their own oil (which I think may be Comma).
If you have plenty of friction material left, it’s possibly oil contamination, and a wash in petrol or the dishwasher  ::) followed by the “right” oil may sort it.
One of mine has had a slipping clutch for a while, so I am on the same route as you. I was in Mandello back in July and got a set of plates from Valpolini.
Finally, one of our guys, Martin Nokes, sells an amateur workshop manual which is useful. Often on eBay, or search our Facebook group.
Good luck and Merry Christmas 🎄

55
Newbies say hello / Re: Just saying hi
« Last post by Paul Gasson on December 21, 2022, 06:15:17 pm »
Thanks for the reply and information, it looked like this was another dying forum, what a shame. Anyway, I will use it whilst it’s here as a new owner, it may help me answer some questions about my bike. I have bought some Heidenau tyres and will fit these over the winter. I also bought a new taper roller steering head bearing and some other parts from Herr Priner in Germany that will improve the bike. I need to remove the primary cover as the clutch was slipping but will have to figure out how to compress the springs. Thanks for noticing my post and your reply. Regards Paul
56
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 there’s no backup service, when it’s gone it’s gone. You can’t 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!
57
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
58
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 it’s 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 it’s 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
59
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.
60
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.
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