Sigma - Chas Roberts Picture heavy

[biggs682]

A few people may have seen this up for sale recently on A N Other cycling forum , soon as i saw that seat cluster .

It's a Sigma branded bike from 1995, custom built (I'm told) for the first owner to use in races and triathalon by Chas Roberts. I've seen other references on the web to Roberts building bikes for Sigma; it has his signature on the chainstay and a frame no. consistent with Chas'.

531 Competition f&f, full Shimano 105 (8 speed version) inc. hubs, Promax E headset, Mavic MA2 rims (36h), ITM bar and stem, look pedals. Needs a good clean, it still has sticky residue from race numbers in places .

i was power less to fight my urges .

 

[AndyRM]

That's lovely! Looks fast just sitting there.

 

[biggs682]

That's lovely! Looks fast just sitting there.

well so far only ridden it three quarters of a mile to do these pics , hoping to use it 2moro for commuting duties

 

[The_Cycling_Scientist]

That's a beauty!
See the first thing fitted was the Garmin very nice find. Sometimes the impulse buys pay off! Look forward to seeing your updates

 

[Elybazza61]

That's pretty lush.

I am resisting the urges to get another steelie* or even say a nice US made Cannondale caad;would be a bit sacreligous though and probably fit modernish kit to it,was smitten by a nice older frame that had been done up with modern kit(Campy chorus and Shamals I think,can't remember the frame) at Streetlife Norwich last year.

*Also have been told that if anything comes in somethings got to go out so it would prob be the the Icarus;now that's a thought,flog the Icarus frame and fit the 105 and Zondas on to a nice 531 or columbus framed steelie.

 

[GuyBoden]

Wow, it looks fantastic, well done, an urge that's difficult to resist..........................

 

[mikeymustard]

That's pretty lush.

.....I am resisting the urges to get another steelie* or even say a nice US made Cannondale caad;would be a bit sacreligous though and probably fit modernish kit to it.

There's nothing sacrilegious about bringing a nice steel frame back to life - modernish, or even m-o-d-e-r-n (don't wanna frighten the "old" people lol) is fine in my book if it's going to be ridden. Of course, period or even original is also good

 

[biggs682]

gave this its first non commute ride earlier today its a flyer for sure

could be a difficult decision when the time comes round

 

[mikeymustard]

gave this its first non commute ride earlier today its a flyer for sure

could be a difficult decision when the time comes round

well obviously it's fast, it is red!
Good job that corn cob of a cassette has 8 speeds, what's its lowest ratio?

 

[biggs682]

well obviously it's fast, it is red!
Good job that corn cob of a cassette has 8 speeds, what's its lowest ratio?

just enough to get me up the hills i have attempted ......

will count and advise

 

[biggs682]

just enough to get me up the hills i have attempted ......

will count and advise

I make it 21 - 12

 

[mikeymustard]

I make it 21 - 12

9 teeth? (Cough, splutter!)
Not very big hills in northants then

 

[biggs682]

9 teeth? (Cough, splutter!)
Not very big hills in northants then

Unfortunately not.........

 

[biggs682]

looks like some new tyres have been ordered for this one but first i want to swap a rear wheel over to see if the rear mech can handle a 30 rear sprocket as its present one is to tight in ratio for hills

 

[mikeymustard]

looks like some new tyres have been ordered for this one but first i want to swap a rear wheel over to see if the rear mech can handle a 30 rear sprocket as its present one is to tight in ratio for hills

can't see it being an issue, I've run a couple of 28t using a rx100 derailleur with no problems