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Author Topic: la grignoteuse de kilomètres  (Read 378 times)

guest107

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la grignoteuse de kilomètres
« on: February 04, 2018, 11:13:49 am »
bonjour

je voulais parler des qualités de la falcone (certaines relevées dans la presse de l'époque) machine italienne si particulière , atypique , souvent appelée la grignoteuse de kilomètres , anti gadget , sans accessoire superflu sauf peut être son compte tour qui ne sert uniquement qu'a vérifier que le ralenti se situe bien entre 100 et 200 tr/ mn au plus bas , robuste , construite pour durer , son bruit , son faible prix de revient en font une machine attachante de liberté d'indépendance pour communier avec la nature qui nous entoure en roulant le plus lentement possible pour que ça dure le plus longtemps possible 

falconistement vôtre

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randall

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Re: la grignoteuse de kilomètres
« Reply #1 on: February 04, 2018, 03:49:45 pm »
Excellent synthesis that fully expresses how to ride and enjoy the spirit of the NF 8) ;)

banquo

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Re: la grignoteuse de kilomètres
« Reply #2 on: February 09, 2018, 09:51:13 am »
For the non-French speakers amongst us, and courtesy of Bing:
"Hello

I wanted to talk about the qualities of the Falcone (some recorded in the press of the time) Italian machine so peculiar, atypical, often called the nibbler of kilometers, anti gadget, without superfluous accessory except maybe its turn account which does not serve Only that a check that the idle is well between 100 and 200 rpm at the lowest, sturdy, built to last, its noise, its low cost of return make it an endearing machine of freedom of independence to commune with the nature that surrounds us in Rou As slowly as possible so that it lasts as long as possible

Falconistement Yours"

Yes, I agree with Randall - that just about sums it up, although I don't understand "turn account which does not serve"

Redsingle

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Re: la grignoteuse de kilomètres
« Reply #3 on: February 09, 2018, 10:14:21 am »
"Compte tour " is a rev counter .


   Redsingle

banquo

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Re: la grignoteuse de kilomètres
« Reply #4 on: February 09, 2018, 10:29:55 am »
Merci!

cloggy

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Re: la grignoteuse de kilomètres
« Reply #5 on: February 18, 2018, 10:02:42 pm »
I wouldn't run the idle really low as as far as I can make out no oil goes to the cambox until the idle is up in the range of a normal brit single. The bypass valve doesn't come into play until the pressure comes up with a few more revs. Leastways my single  smoked copiously at very low revs after I fitted the additional  oil feed. Once I raised the revs slightly to the same as my sidevalve singles it stopped smoking. At what revs  the bypass comes into play would entirely depend on the efficacy of one's oil pump. Of course if one's pump was poor in the first place then it might never smoke at all. Just a thought....
« Last Edit: February 18, 2018, 10:06:26 pm by cloggy »
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randall

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Re: la grignoteuse de kilomètres
« Reply #6 on: February 19, 2018, 07:11:09 am »
with all due respect for the considerations made,
according to my personal opinion, the smoke is due to the wear of the valve guides

banquo

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Re: la grignoteuse de kilomètres
« Reply #7 on: February 19, 2018, 08:43:57 am »
I think you're right Randall, but as it only occurred after fitting the oil feed, it does suggest there wasn't any oil reaching the valve gear with the stock lubrication system

randall

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Re: la grignoteuse de kilomètres
« Reply #8 on: February 19, 2018, 09:31:01 am »
That's correct Banquo;

I just note that on my NF Carabinieri, with motor in perfect conditions and additional oil line fitted , he does not smoke,

meanwhile on my NF Civile ,with tired motor , and additional oil line, he does smoke a lot

banquo

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Re: la grignoteuse de kilomètres
« Reply #9 on: February 19, 2018, 12:04:59 pm »
Yes, agreed: mine had very worn guides after only 25,000 km, and no smoke, but then I had this, demonstrating there was no oil reaching the inlet rocker.

rocker wear by bancquo, on Flickr

You can't really see the wear in this photo, but the guide was oval, and there was a lot of rocking between the stem and the guide.

inguide by bancquo, on Flickr
« Last Edit: February 19, 2018, 12:13:47 pm by banquo »

randall

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Re: la grignoteuse de kilomètres
« Reply #10 on: February 19, 2018, 02:27:22 pm »
Wow!

This is an abnormal wear!
Most likely due to insufficient lubrication;

It must be taken into account that it could also be a material defect (incorrect hardness or wrong surface treatment) has already occurred in the past, and some cases are known
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cloggy

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Re: la grignoteuse de kilomètres
« Reply #11 on: February 22, 2018, 11:30:02 pm »
 I beg to differ. Having turned over the engine by hand with the rocker box covers off, great dollops of oil were being deposited on the ground; this  before  fitting the additional feed which also delivered an excessive amount  of oil by the same hand cranking. I expect the guides are worn, but since it wasn't using any oil, it wasn't a problem. And I don't believe excess guide wear causes valves to break since that was recorded as happening with brand new thin stemmed valves which also showed no sign of galling. Indeed the builder thought it was due to running the sort of  tiny clearances promoted by North Leicester Motorcycles. That may be fine for chuffing around at 45 on a touch of throttle  but not at speed. I think what happens is the massive pushrods expand a lot and hold heat longer than the castings. That holds the valve off it's seat leading it to soften and then break when the engine cools down sufficiently for it to start slamming into the seat again. I've run the engine for miles at 70+ [without realising it]  and taken it up to an indicated 78. The only problem being the ignition keys blew away....
Oh and I got severe leg cramps after around 250 miles of mixed welsh roads so I got the saddle raised at the nose by 4".  Didn't happen again after doing an all day orienteering event  so that worked.

« Last Edit: February 22, 2018, 11:37:53 pm by cloggy »