Italian Tandem, Bmx, Mtn Bike Unique/Maybe Rare

[Superman1984]

Sorry Not the Greatest of pics but from what I am reading it says they're kinda unique & sought after because they can be made into ALL 3 styles of bikes

If Anyone has Any More Knowledge and Even what 1 of these would market value for generally please enlighten. Thanks

I am the 3rd owner and I am Really Diggin' this but it's way Different than Anything I've owned or seen tandem wise

 

[Superman1984]

 

[dnc1]

Modular bicycle system.
Love it!

 

[Superman1984]

Modular bicycle system.
Love it!

I can't wait to maybe see if the tires will air up & or maybe try some 24x2.125" tires on it before making it back into a bmx form. I am not finding much info how to even do that. Thanks though.

 

[dnc1]

I can't wait to maybe see if the tires will air up & or maybe try some 24x2.125" tires on it before making it back into a bmx form. I am not finding much info how to even do that. Thanks though.

I'll do a little digging, see if I can find more information.

 

[Superman1984]

I'll do a little digging, see if I can find more information.

I am finding a few threads and such but No Real idea of how they assemble.

I assume you unscrew the allen bolts and unslip the joints?

I just don't want to risk messing anything up or getting it out of wack. May not disassemble too easy but it's breaking day light so time to check it out further. Thanks for the interests & any help

 

[Superman1984]

So I managed to get the front tire to air up but it kept rolling out of the bead in 1 spot & the 1.75" cheng shin tires are shot so I replaced it with the only set of 24x2.125" I have.
I noticed the thumb shifter Reads Sachs Hurret, I used some PB Blaster to lubricate the dusty chains & noticed 1 of the frame bolts hits the chain when on the rear smallest sprocket.

Also the derailleur doesn't seem like it articulates?

Is it Only supposed to adjust during gear changes? Doesn't seem to keep the rear chain tension too taught at all

 

[dnc1]

Like you say, lots of search hits, but very little actual information.
Seems to be a popular bike collection item.
Lots of them for sale.
The joint sections are apparently made from a type of plastic.
It would seem that it dismantles as you suggest, but obviously I don't really know.
Here is the US patent for it, it might help with taking it apart.....

I wonder how much they paid Signor Moser to advertise this?

 

[dnc1]

Derailleurs only function properly when the chain is in motion.

 

[Superman1984]

Like you say, lots of search hits, but very little actual information.
Seems to be a popular bike collection item.
Lots of them for sale.
The joint sections are apparently made from a type of plastic.
It would seem that it dismantles as you suggest, but obviously I don't really know.
Here is the US patent for it, it might help with taking it apart.....
View attachment 1431337

View attachment 1431338

I wonder how much they paid Signor Moser to advertise this?

Mine I don't believe are any kind of plastic
They look to be aluminum or pot metal of some sort because the coating/paint is chipping in a few areas; looks like a boat propeller with corrosion starting under it.

What I meant is Shouldn't the "arm" or pivotal points move when the gear is changed and you begin pedaling to keep both cogs tensioned against the chain?