wanted - moto giro bike

Paul Marx said:
Get quality inner tubes as well. I use motocross or enduro tubes now. 3mm rubber.
There's a shop in Italy, but that's a long way from you. Italian Classic Tyres. Excellent service.
https://italianclassictire.com/

Clutch pull likely cable related.

Paul
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Seems to be a french thing... had a french 3CL in the shop last year, front wheel had a terrible wobble starting at about 60 km/h. Tried balancing, but 100gr. wouldn't even get it close. Pulled the tyre and tube to find a heavy-duty motherfucker of a tube (Michelin of course) suitable for the Paris-Dakar. Replaced it with a normal tube and all was good after applying about 10gr for balancing. The Michelin tube alone added 1 kg of un-sprung weight.

Moto-cross tubes are not meant for prolonged high-speed use and are therefore apparently not made with an emphasis on precision. The removed tube had irregular wall thickness which could be felt by running the tube between your fingers. Inflating it brought the irregularities to light.

A tiddler might not reach speeds at which tyre balance becomes a real problem, but I'd be very, very wary anyway.

BTW, Heidenau tyres are quite good quality, as are their tubes. Most tread patterns are based on old, discontinued Metzeler patterns and they don't do anything above a "H" speed rating, which is irrelevant in this case anyway. "Vee-Rubber" (Thailand iIrc) inner tubes are great value and are of a considerably thicker guage than most european brands, possibly to cope with the road conditions in the asian markets.

piet
 
sfcpiet said:
Seems to be a french thing... had a french 3CL in the shop last year, front wheel had a terrible wobble starting at about 60 km/h. Tried balancing, but 100gr. wouldn't even get it close. Pulled the tyre and tube to find a heavy-duty motherfucker of a tube (Michelin of course) suitable for the Paris-Dakar. Replaced it with a normal tube and all was good after applying about 10gr for balancing. The Michelin tube alone added 1 kg of un-sprung weight.

Moto-cross tubes are not meant for prolonged high-speed use and are therefore apparently not made with an emphasis on precision. The removed tube had irregular wall thickness which could be felt by running the tube between your fingers. Inflating it brought the irregularities to light.

A tiddler might not reach speeds at which tyre balance becomes a real problem, but I'd be very, very wary anyway.

BTW, Heidenau tyres are quite good quality, as are their tubes. Most tread patterns are based on old, discontinued Metzeler patterns and they don't do anything above a "H" speed rating, which is irrelevant in this case anyway. "Vee-Rubber" (Thailand iIrc) inner tubes are great value and are of a considerably thicker guage than most european brands, possibly to cope with the road conditions in the asian markets.

piet
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Rode my SF2 all Summer with my enduro tubes Piet.
I'm well aware that they're not suited for high speeds but 120 km/h is the most I reached on a couple of motorway stints.
I chose that option after a valve ripped off a standard tube of unknown origin.

Paul
 
thanks, Paul Marx, for the link to Italian Classic Tire! Looked perfect. I ordered rim liners, 3 tubes (obviously one for spare), and 3 tires, I ribbed for the front to try, and two "sculpted", one for rear, one for front if I don't like the ribbed front. All in correct 2.50 x 19. Was 50 Euro shipping, and who knows how long to get here, but all very reasonable and appropriate for the bike. Total was 311.85, paid by Paypal, then a few minutes later without explanation they canceled my order and refunded to my PayPal without explanation. Shame, they looked like great tires for my purposes.

I have the carb off and stripped, turns out the tank and carb were left for what must be decades with fuel in, what is in the tank stinks to high heaven, am going to have to clean both fuel taps out. What fuel was in the carb has dried up solid, going to run all the carb bits through the ultrasonic. Throttle action very sticky, took the throttle apart, what an interesting piece of engineering, tiny little chain like a weird piece of jewelry, the grease inside the throttle seems to have turned to a sticky solid, it is going into the ultrasonic as well.
 

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Pity about ICT. I've had no problem with them. But the world is closing up on itself.
Try again maybe.
That chain pull throttle is common to many Italian machines of the period.. Super Pratic Flash. I have those on my Laverda singles and on a GT waiting for better days on the mezzanine.

Paul
 
I just ordered Heidenau K34 tires in 2.75 x 19 from a U.S. supplier, plus tubes and rim liners. The Italian tire supplier did not respond when I emailed asking why they had cancelled and refunded my tire order. DStock size is 2.50 but i am guessing/hoping 2.75 will work as I can't find a supplier for 2.50

very cool quick change rear wheel, brake and sprocket/chain all stay in place when wheel is removed.

I bought a new 6 volt battery, have tested compression at 110 psi, checked all the wiring (some of which is badly in need of repair/replacement), and will patch up the wiring, then hotwire the ignition switch. The tiny little carb has been run through my ultrasonic three times now for half an hour at a time, crap has finally quit spewing out of it. Will re-assemble the carb, hang a fresh supply of fuel from an auxilary fuel source, then going to try and start the engine.

I am trying to find a Gilera forum or source of info, but have a couple of questions if anyone can help

- a good source of Gilera info?

- is the 6 volt system positive or negative ground?

- what weight engine oil and how much? What came out was not very much, guessing maybe a litre at most?

- where the heck to get replacement ignition parts - points, coil, whatever that regulator/rectifier looking thingy is, etc, or better yet solid state replacements. I hate electrickery and have no idea how this weird generator thing ultimately produces a spark at the plug....

While I had great intentions of preserving "patina", now that I have had a good look at everything, the bike has been repainted not once but several times on top of some crappy metal repair, the Gilera stickers on the tank are cheap aftermarket that are bubbling off, most of the fasteners do not look original in addition to being rusty, etc., etc. so "while I am at it I might as well......":rolleyes::rolleyes::rolleyes::rolleyes::rolleyes::ROFLMAO::ROFLMAO::ROFLMAO: In my recently downsized home and garage I no longer have spray painting facilites, although I will take everything to bare metal and do the prep myself, I am now shopping for a painter.

Paul LeClair
 

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It might not need a battery to run. Might be worth isolating the battery connections and seeing if it still generate a spark. My knowledge stops at early small Japanese dirtbikes and plenty of them didn't need a battery to start and run. Easy test to do.
 
I should think that it doesn't need a battery.
Earth is negative
I imagine that recommended oil was a 30 or 40W depending on season. A multigrade will do fine, 15/40 for instance.
If you want to know what your electric bits are, just type the CEV or Marelli, for instance, reference in Google.

There's unfortunately probably not much Gilera forums etc on the web. We're lucky with this forum that you initiated though there was and still is Michael Moore's mailing list. There's a Gilera Registro Storica, otherwise, try with Piaggio or Gilera at Arcore.
There are of course specialised vintage Gilera dealers in Italy.

Paul
 
Thankfully it looks like you have clear access to the points. My worst nightmare was a bike that had the points inside and behind the flywheel, assess was through tiny holes in said flywheel. Painful memory.
 
Vince said:
Thankfully it looks like you have clear access to the points. My worst nightmare was a bike that had the points inside and behind the flywheel, assess was through tiny holes in said flywheel. Painful memory.
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That's often the case.
My wife has just come upon a 125 Yamaha DTMX which we've just got started. Looks heaps of fun.
If it's a points ignition, it's through a window in the alternator rotor for setting. With a cigarette paper says the manual.

Paul
 
Those points inside and behind the flywheel are the modern equivalent of a Ship in a Bottle. Painfully dumb
 
Paul Marx said:
Picked up this afternoon from the Guzzi singles list.
Something to aim for.

PaulView attachment 60704
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my but that is pretty..... on my recently acquired very small bit of Gilera 150 knowledge that appears to be a Turismo 150, different front forks.

Bloody hell, now that I have abandoned the "patina" concept I am going to have to polish the engine cases, dirty filthy job, i always wind up looking like a coal miner by hte time I am done.

so on this bike the points are readily accesible, it is the front chain sprocket that is buried behind the clutch, can't even see it to inspect it....

Paul LeClair
 
Very likely older with those forks.
Seats are nothing to go by. Youngsters at the time ditched the two single seats in favour or more sporty after market dual seats.

Paul
 
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