Campag Delta tyre clearance

[Sjl]

Hello,

By way of an intro have a whole bunch of retro steel bikes plus modern fleet (11 in all) and still have the bug. Sold a couple of mavic ssc equipped bikes in lockdown and still regretting it. Old C-record gset’s my facourite.

Have a nice geoff roberts frame with c-record and just pulled it off the rack and thinking of using it more regularly. Am going to change the cinelli crit bars for nitto m151aaf’s to reduce the stretch and replace the original levers for those rare campy carbon brake levers (that use the ergo hoods) to ease pressure on the thumbs (those early brake levers half way down the bars are so uncomfortable after riding modern shimano). This should make the ride a lot more comfortable.

Bike has 2nd gen delta’s and 23mm tyres which are equally uncomfortable after new 28 fare. Question is has anyone experience of running 25mm tyres with these brakes, clearance looks tight but wondered if it will fit (before i go and order some)


Many thanks
Simon

 

[bikeworkshop]

The calipers will take 25s if the frame allows it iirc
- It will ultimately depend on the fork and stay length -
If you've got 3mm all round the 23 tyre a 25 will fit ok, as long as the wheel is straight

 

[Sjl]

Hmm, thanks, will give it a go and report back

 

[Botty Kayer]

I've got 28c tyres (just fit) on my Somec that runs Delta's, so 25's no prblem

 

[pigman]

There is scope to move the calipers up and down as well as limited scope to slide the brake shoes vertically

 

[cat1]

I have a Colnago Master with delta brakes 5th gen have just changed from 25 to 23mm for safety reasons don,t want to end up going over the h,bars if a stone gets caught between wheel & forks.

 

[Sjl]

These are the Record delta’s where the shoe slots have v limited height adjustment, calipers are pulled up as far as will go, shoes as far down as they will go. Am going to try 25mm’s this evening and will try and post a photo

As an aside also have Croce D’Aune delta’s which are different with much wider clearances and adjustment is at the shoes rather than the caliper. Think i have run these with mudguards in the past!

 

[neilbah]

Tyres listed as 25 are a big variable as we know that they arent all the same in how they fit especially with rim width into the equation. Perhaps the answer is to use vittoria corsas in 24mm now that theyre sold in even 2mm increments. Another option is doubling the calipers washer which gives a tiny bit more space depending on the Crown/bridge drilling angle.