Dropouts … nice ones anywhere?
I have a few catalogues of Taiwanese dropout vendors if Curtis can get them via the usual suppliers like Ceeway. PM me if so. Ceeway supply a lot of frame builders so maybe worth a look there or check who Curtis buy from? Surly dropouts may also work.
EBB with normal dropouts
Good call – make it a Bushnell tho.Posted 4 years ago
Joining stainless steel to 725 stays doesn’t seem feasible with brass welds (which I want for the raw finish)
Hmm. Off the top of my head I can’t think why there would be a problem with this – with the right flux stainless can be brazed, or it can be silver-soldered if you don’t need big fillets.
But maybe there are other design considerations why they won’t work.Posted 4 years ago
Speccing a new Curtis frame. Joining stainless steel to 725 stays doesn’t seem feasible with brass welds (which I want for the raw finish), so that rules out Paragon sliders and I can’t see any other sliders that look nice, come aftermarket for a framebuilder to use which are steel (not stainless). Correct me if I’m wrong!!
Because of this, will be going EBB with normal dropouts. Are there any with changeable inserts – so drive side SS to geared, but non-drive side standard to Rohloff? Oh, and which look nice too?Posted 4 years agomick_rSubscriber
How about the 2 souls slider dropouts? They come ready designed for Rohloff, sort the chain tensioning and have a mech hanger option. Also good if using untapered round stays. They are a 25mm wide so need to make sure no heel clipping issues.
EBB makes the back end easy, but I’m personally not a big fan (the Carver Bushnell copies I’ve used seemed to love ingesting mud and needed regular cleaning before adjusting). But Jameso does know his stuff so don’t write them off on my account.
Do any of the Surly ones suit? Black Cat swingers?Posted 4 years agomick_rSubscriber
You can buy the regular Surly dropouts through Ceeway / Ison.
You can buy the bolt on bits for the Salsa dropouts but would have to get the brazed bit made to suit. Not impossible but will add cost / framebuilder may be unwilling.
I’m pretty sure Black Cat sell dropout kits to proper insured framebuilders like Curtis (just not hobbyists). They are the dropout that Salsa ripped off in the first place for the Alternators……..Posted 4 years ago
It is possible to join 725 to a stainless dropout, you just have to think about it a little more. The diameter of the stay is more likely to cause a problem, but below is a 19mm 631 chainstay, joined to a stainless paragon rocker dropout (their slider would work exactly the same).
I have achieved this using a plug brazed into the tube (using brass, the line around the tube) that is then slotted to fit the dropout so it can be silvered together. The issue is that the types of silver most framebuilders use isn’t designed for filling large gaps (hence the plug) and is also incredibly expensive, so you don’t want to use loads of it. The type of brass most builders use can’t be used on stainless.
This type of joint allows virtually any material and diameter chainstay (or seatstay) to be joined to any design/material of dropout.
I’m not touting for business as we don’t currently offer fillet frames but my suggestion would be to find someone who can build the frame you want, using the parts you want. If you want a tig frame though, drop me a line 😉
MattPosted 4 years ago
Ben- I’ve got some 101 on order, can’t wait to try it for fillet, didn’t realise it could be used on stainless though, worth knowing
Oxymoron- it made a huge difference to the weight on that bike. We’ve still got a set of 2souls dropouts in stock and they’ve just added 142×12 sliders for them too
MattPosted 4 years agoMacavityMember
Design and build it yourself, and have Brian Curtis help you.Posted 4 years ago
The flame is green because the flux is in the flame, gasflux.
Brian/Gary built my frame with Paragons but after a few test brazes they got the drop outs tig welded on as the braze just wasn’t pleasing them. I think it’s the only one they’ve done (7 years ago now).
Obviously if it’s the raw you’re going for it doesn’t really work for you.
I’ve always wanted to get them to revise the extra stays they added to the back end to something tidier but never had the inclination to send it back to them, needs a respray at some stage so that might be my opportunity
Posted 4 years ago
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