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Detto Vintage Bike

1927 Views 10 Replies 7 Participants Last post by  ogre
Hi all,

I bought an 'Eroica bike' during lockdown which I have been refurbishing and tidying up but was trying to get a bit more info about the bike and it's date of manufacture.

A BIT MORE INFO ABOUT THE BIKE:
It is a red Detto Pietro bike with chrome details on the forks and dropouts. I've found it difficult to find out which Italian frame builder made these frames for Detto, but what I do know is that it's made from unusual 'shaped' Columbus MS Gilco tubing, has a Cinelli stamp on the BB shell and Campag drop-outs. The tubing is amazing and it has DP stamped into the metal (not a decal) - headtube, fork tops, BB shell, all lugs etc.

Frame size
Seat tube: 61cm (c-c)
Top tube: 58cm (c-c)

Components
Chainset: Campagnolo Chorus
Pedals, Chainrings, Groupset: all Campagnolo Chorus
Hubs: Ofmega, with Campagnolo QR skewers
Rims: Mavic
Brakeset: Modolo Black finish
Stem: 3TTT, pantographed Detto Pietro
Bars: Ambrosio 13 Volte Campione Del Mondo
Saddle: Selle Italia limited edition Fausto Coppi

QUESTIONS:
The headset and bar stem looks as though it has been set up wrong (see pics) but it feels OK, I would love some advice on this and also wanted if anyone knew where I can get a long bolt for the handlebar stem to fit it?

The headset is the only bit of the bike I haven't stripped down as I am nervous about getting it back together if it has been built up incorrectly. There is a weird gap between the components of the headset. Does anyone know what is going on here?

Does anyone know anymore about these bikes or the year?. I know Detto made cycling shoes but there is little info about their bikes

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It looks like a spacer is under the lock nut. The steerer may be too tall for the stack height of the headset and the spacer allows the use of the headset without having to cut down the steerer. If you repack the headset it would probably improve the appearance if you replaced the black spacer with a silver one.
The stem is probably missing a cap. The bolt is most likely deeply recessed, and the cap would plug into that hole.

A different 3t stem but using the cap 3T Synthesis Stems - South Salem Cycleworks (sscycleworks.com)
That is a really cool bike and I’m going to guess it’s from mid to late 80’s. Just a guess on my part but maybe a show bike for shoe display at various events?

Regarding the headset, I would just replace that black spacer with a keyed spacer (has a tab inside to fit in the slot in the fork steerer) and will probably need another 1 or 2 mm spacer. Like the other poster said, the stem bolt is probably there but if not, of course, don’t ride it until you get one! In that case I would just find the cheapest 3t stem on eBay and use the bolt from that one.
Very interesting bicycle. Looks to be in good shape. 3TTT I believe used a decorative plastic plug to fill the hole where the stem expander bolt is recessed. Surprised the bars are not 3TTT as well. I like the Italian flag pantograph for the top of the stem.

The internal rear brake cable throws me off placing a date, then there are the exposed brake cable levers.

It’s odd that the steerer tube was cut incorrectly but I agree with others, just replace the black spacer with a chrome one.
Apparently that is a Detto Pietro bike and he made some pretty esoteric stuff.

Detto Pietro Polare | The Spoken

Doesn't look like there's a Columbus sticker on the frame, would love to know the material. OP, can you take a pic of the BB shell? And if those high flange hubs are campag, that's a plus, but it looks like the rear hub may not be.

It's a shame someone had to use the twist and turn and gouge method to install the handlebars. (pic #2). Those bars look like they're mega-deep drop.
Built to order by Tecnotrat, with their in-house tubing (by Falck/Mannesmann)

Nothing to do with either Gilco or Columbus.
Looks like Gilco tubing -- whatever that is. My Colnago has crimped tubing like that. No one seems to know who makes the tube sets. No Columbus or Deda decals on it. DT-15V. No one seems to know where it comes from. Its a nice riding bike though.
A HUGE THANK YOU TO ALL WHO REPLIED - GREAT KNOWLEDGE!!

I will get the headset stripped and get a silver spacer or if it is straightforward I might just unleash the hacksaw.

Thanks again for your help.
Mike
A HUGE THANK YOU TO ALL WHO REPLIED - GREAT KNOWLEDGE!!

I will get the headset stripped and get a silver spacer or if it is straightforward I might just unleash the hacksaw.

Thanks again for your help.
Mike
I think that it would be mighty easy to bugger up the steerer with a hack saw.
I think that it would be mighty easy to bugger up the steerer with a hack saw.
Yep. Threaded steerer tube is the issue.
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