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@Biggles567 Thanks for offering and for the info.
Yeah it's definitely dirty on the backside. I could have a reasonable crack at cleaning the inside of the tube because there's access via the BB shell. So I could get busy with a ball of wire wool on a coat hanger with some Kurust and then repeat with some alcohol.
But yeah if you tell me it's likely to fail even given that prep then I'll take your advice and go to Winston.
I also had ideas to just lay up some carbon weave over the stay (I've repaired carbon frames before) but that feels more like a bodge at this point.
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Hello forum framebuilders! I come in need of your help. Would anyone (in London) be prepared to have a stab at TIG welding over this crack in my chainstay? It's a Sirius 653 frame with 0.6mm chainstays.
I spent aaaaaaages carefully removing the seized BB from the frame but then found this crack while prepping to repaint! Before removing paint it looked like a thin line of surface rust in the paint - from where the rear tyre rubbed the paint away - so I'm hoping the steel on either side is still near 0.6mm thick.
I can do any prep work, bring the frame to you and offer beer / cash bribes / parts / whatever. My plan B would be a replacement 631 chainstay from Winston Vaz (£100), but it would be nice to keep the 653 (i.e. 753) chainstays and of course nice to save the £££.
@Dogtemple gave me some useful info and suggested I try asking fabrication forms or posting on a welding forum but I thought I'd ask here in case anyone felt confident.


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@Chellis88 and @Wadi2
Wadi has dibs on Chorus 10s groupset as they might be able to collect before the Thursday cut-off. If not then Chellis you're next in line.
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Lightning fast! No flies on you...
Tbh I don't mind doing one big trip to the post office on Friday.
OK here's a postage plan: I've noted your dibs. If those parts aren't taken by Thursday noon then I'll PM you about postage costs and payment, and then I can post on Friday. I'll do that for any/all parts on this thread.
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EVEN MORE PARTS
San Marco Rolls saddle - White, immaculate, slight marking to rails, no marks to leather. Gold trim shiny shiny. - £45SOLDDura Ace 7410 pedals - Bearings are buttery smooth with no play. Scratches to undersides, logos on sides intact with small scratches. - £30

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WHEELS
Mavic Cosmic wheels - Campagnolo freehub, came from a bike with Record/Chorus 8s. Has one Gatorskin tubular which is fine, other tubular is older and has died. RIP tub. Within 1-2mm true, bearings very nice. Brake tracks are still flat but do have a some visible wear (no scoring or anything nasty like that). The plastic dustcaps are notoriously prone to cracking and sure enough the front wheel has one cracked dustcap.-
£150 £140£135


Bitex hubs on DCR Flirt 30mm polished silver rims - 20/24h, Campagnolo freehub. New condition, maybe a few tiny scratches. Nice and lightweight at around ~1500g. Bought as parts for ~£300, built carefully into wheels, then shelved. Offered here for
£280 £260£255

Mavic GP4 on Maillard vintage hubs - No visible wear anywhere, so so fresh! Even has original QR skewers in amazing condition. Continental tubs not glued and not included, but available below. -
£130 £120£115Continental Giro 22mm tubular tyres - As new, inflated but never glued. Tanwall. £18/each or £30/pair. I was going to bundle these with the Mavic GP4 wheels but decided to list separately and reduce the wheelset price, as inevitably someone will ask for tubs or wheels alone.


VINTAGE TYRES
Vredestein Volante tyres 23x700 - NOS, Green and black tread, wire bead, a little dry but useable - £10/pair
Avocet FasGrip Time Trial 20x700 - NOS, tanwall, wire bead, not dry, very lightweight and thin tyres - £10/pairSOLD

SHOES
Shimano RT4 “Road Touring” shoes - Size 48, (roughly 12.5 UK). Recessed for 2-bolt cleats. Bought for £75(!), worn for one test ride and then I removed my cleats and put them back in the box! They’re great but I use chunky custom insoles so didn’t have a good fit. Small scuffs, otherwise as new. Boxed. - £45
Feiyue shoes - Size 47 / 285mm. But I’d say they fit more like a 46 (I’m guessing) as I sometimes fit into a 47 but these are definitely too small for me. Not easy to find these in this mid/high top shape. Tried on once. New and boxed with a slight mark to the rear, never laced but laces included obv. - £15

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Well, it's been fun hoarding. Please loot my boxes of parts. Priced to sell.
Collection from N16. I'll consider posting if anything is left over.
Go ahead and dibs, but do please also PM.CAMPAGNOLO GROUPSETS AND PARTS
Chorus/Record 8s groupset - £160
Brakes in excellent condition.
Overall good condition with a few caveats:
Rear mech tidy, logos v faded but visible (Chorus).
Record front mech is a band-on for 28.6mm seat tubes, and has lost some chrome on the inside surface of the cage. Cranks may be Record or Chorus, no idea as logos have rubbed off.
Cassette is a Miche 8s and chain is KMC 8s. Neither showing much wear, and my chain wear tool cannot find fault with the chain.
Ergos pretty tidy with logos intact, but with small scratches/grazes elsewhere. These shifters are serviceable and fully working with a caveat: I have a suspicion that someone has rotated a ratchet in the RH lever by 90/180deg after servicing because whilst you can indeed get all 7 clicks, the thumb lever must be pushed a way down before it then finds the first tooth on the ratchet. You still get a good crisp "click, click, click" through the gears, but you gotta push it a ways before the clicks start. Priced accordingly!
Campagnolo Chorus Carbon 10s groupset - £200SOLDChorus silver brakes still available for
£40/pair£35/pair (pictured with sold groupset below)Veloce cassette 11-25 - 10s, new, boxed - £35SOLD
Centaur cassette 12-25 - 10s, lightly used - £22SOLD
Record chain - 10s, new, boxed - £27.50SOLD
Veloce chain - 10s, new, boxed - £20SOLD
Kool Stop pads - salmon/black, Campagnolo shape, new boxed - £8/pair or £14 both pairsSOLD
Campagnolo pads - BR-RE600 apparently for Record, Chorus & Athena pre-1999. 2 pairs, new boxed, £13WITHDRAWN
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PARTS
Tektro RL520 levers - Good condition. Your ticket to using MTB brakes (i.e. V brakes) on a road bike. - £7SOLD
Dia Compe hoods - Brown, for Weinmann shape non-aero brake levers - £7
Flite Ti saddle - Excellent condition with no tears, tiny scuffs - £45SOLD
Simplex seatpost 25.0mm - 19cm rails to end, nice shiny condition, not easy to find these - £15SOLD
Kalloy Uno seatpost 26.8mm - Scuffed and scratched by mechanically sound - £7SOLD
Steel headset - Taken from an old Raleigh frame, has zig-zag teeth between top cup and spacer. Rusty but will likely polish up (pro tip = lemon juice + wire wool) - £free
FSA compact chainset - Old faithful. I have fitted replacement steel 50/34 rings. Spacing is quite close so best for 9/10 speed. Takes a 113mm JIS (i.e. Shimano) BB - £15
Hope tandem hubs - 48h, a proper rarity/curiosity, for original gangster 5-bolt Hope disc brakes (or rim brakes of course), good solid tandem/MTB hubs. Front surprisingly lightweight, rear is a tank. All bearings feel great. - £25SOLD
Planet X rear hub - 24h, red, Shimano shape freehub, 242g, new - £25
Dura Ace 7400 hubs - 28h/28h pair, 100/126mm, threaded rear, have been slightly slotted for bladed spokes, i.e. not much filing. 143g front, 224g rear. Ideal vintage weight weenie hubs - would build into <1250g wheels with nice tub rims (i.e. Mavic GEL 280). Beautiful condition and bearings smooth like butter. - £75Continental GP4000s II 25x700c tyre - New, boxed - £20SOLD
Vittoria Open Corsa CX III 25x700c tyres - All black with red logos. New, boxed - £25/each or £45/pairSOLD3ttt Status stem- 100mm, 26.0mm clamp, good tidy condition, missing the bolt cap but they are $5 on eBay - £15 sold .
ITM/Italmanubri Eclypse stem - 110mm, 254.mm clamp, TIG welded and chromed (?), lighter than your average bear at 265g, some tarnishing on surface but logos intact. I think these came with a blue sticker on top which is missing on this stem, showing bright chrome beneath. - £13
No name stem - 28.6mm forks / 26.0mm bars. 115mm as best as I can measure it, ±7deg? Good for a stealth build and quite lightweight. - £5
Cinelli Giro d'Italia bars - 40cm labelled, so I assume 40cm c-c. Logos pretty good with minimal scuffing, would look great after 5 minutes with some 600/800 grit emery paper - £15


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Thanks. Yeah I'll save the frame one way or another. Tbh I just enjoy a good faff.
653 does indeed use the same chainstays as 753, 0.6mm Mn Mo steel:

Current plan A is the carbon wrap method. I've done it before on carbon bikes and I'm pretty confident that epoxy bonds well to freshly sanded steel. It's something I can do in my own back garden for a cost of £11. Might make the ride a little stiffer? But chainstays are supposed to be really stiff right? I can even wrap both chainstays to keep symmetry. Total weight gain will be like ~50g, no disaster.
The one downside is that if I resell then the carbon repaired 653 frame would be worth ~£100 less than if I got Winston to fit a fresh seatstay. But by repairing myself I save £90 so it comes out in the wash.
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I thought this was just surface rust originally when I bought the bike on here. But it's a crack right through the chainstay. It's about 10mm long.


It's where the tyre on the old build must have rubbed enough to remove paint and expose the steel.
Anyone here know if this is repairable? I've never really seen spot repairs on tubes so I suppose it would need a new chainstay. Is that likely to be £££?
Edit: Looks like Winston Vaz charges £100 to fit a 631 chainstay. Not horrific, but not peanuts either.Crazy off-piste idea: I could strip paint, lightly sand that section of chainstay and then wrap with a ribbon of carbon weave soaked in epoxy. I've repaired carbon frames that way. Is that a stupid idea on steel?
It's a 653 frame that fits me so I'd like to keep it if possible. Otherwise the hunt begins again.
Project thread: http://www.lfgss.com/conversations/357776/




Well the consensus here is reassuring.