2-stroke electrics

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ajleone
Posts: 228
Joined: Sat Oct 31, 2009 11:20 pm
Location: Rush, NY
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2-stroke electrics

Postby ajleone » Sun Feb 03, 2013 7:16 pm

Howdy fellow 2-stroke Ducisti's - I and in the process of restoring and resotring into existence 2 Ducati 48/50 Sport or Falcons. Does anyone know if the 2-stoke fan-cooled flywheel is the same setup (from a timing perspective) as the non-fan cooled flywheels ? WHen I say "fan cooled" I am referring to the shrouded engine covered model of the Ducati 50's ? It seems also that of the non-shrouded 48cc engines, there are 2 versions, one that has the ignition HT coil built into coil assembly and the other version uses the external coil, similar to the 250 NC bikes.
Tony

Scrambler
Posts: 104
Joined: Mon Sep 19, 2011 4:08 pm

Re: 2-stroke electrics

Postby Scrambler » Tue Feb 05, 2013 4:17 am

I am not very familar with 2 stroke Ducati's but came across this bike today searching for vintage Ducati images. Is this a factory bike or a custom / race resto? Either way it is wicked cool..... Is this a "pup" on steriods? I think i may need to research what it would take to duplicate one.
Mike Mc
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Eldert
Posts: 548
Joined: Sun Nov 01, 2009 3:23 pm
Location: Hazerswoude Rijndijk Netherlands

Re: 2-stroke electrics

Postby Eldert » Wed Feb 06, 2013 4:12 pm

radical ducati in Spain build this bike .

here is a writeup on the project :

http://www.radicalducati.com/index.php?page=48sportiva

Eldert

Scrambler
Posts: 104
Joined: Mon Sep 19, 2011 4:08 pm

Re: 2-stroke electrics

Postby Scrambler » Thu Feb 07, 2013 4:47 am

Eldert, thanks for the information. This looks like a very "doable" project. I am now on the hunt for a donor bike to get started. The limited amount of fabrication is no problem at all. I like to fab stuff you can not buy...............

Thanks Mike Mc
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ajleone
Posts: 228
Joined: Sat Oct 31, 2009 11:20 pm
Location: Rush, NY
Contact:

Re: 2-stroke electrics

Postby ajleone » Sat Feb 23, 2013 6:15 pm

FWIW, Here is some info on the electrics, that I have found and might be of interest:

The upto 63 Falcon 50 Sport 50's have an internal ignition coil, that is internal to the stator assembly as shown in the parts book. The 64 Falcon/Sport 50's have an external ignition coil, "green label" same as the early 250 NC scramblers and Bronco 125's

falc50-63-parts.jpg
upto 1963 Falcon 50 stator and flywheel assembly


falc50-64-parts.jpg
1964 Falcon 50 stator and flywheel assembly


The 64 Falcon/sport 50's flywheel has a fan attached and the engine cylinder is shrouded (fan cooled). If someone want to convert a shrouded engine to a non-shrouded engine, the engine cover would need to sourced, flyweel and stator. The 2 flywheels although mechanically fit, the lobs of the hubs are shaped differently and therefore the stators need to be matched. This is what I was attempting to do, when I realized that I could not simply replace the engine cover and flywheel, I would also need to get a stator too that has the internal ignitinon coil.

Anyone got a spare 61-63 stator for a Falcon/Sport 50 ?

falc50-fly-hub.jpg
63 and 64 Falcon 50 flywheel hubs - note different in shape of the lobes


falc50-fly-front.jpg
63 and 64 Falcon 50 flywheels


Tony


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