Re: Front Der. Direct Mount
I wonder if you could just have a PEM nut pressed on the back there instead of having to braze/get the machined nut made up. Just a thought, looks good!
Re: Front Der. Direct Mount
That's great, Joel.
Why not just make the hole to be tapped?
I like it.
- Garro.
Re: Front Der. Direct Mount
The only reason it's not tapped is because the material is too thin.
I'll get some quotes this week and see if it's viable.
-Joel
Re: Front Der. Direct Mount
Quote:
Originally Posted by
Clockwork
The only reason it's not tapped is because the material is too thin.
I'll get some quotes this week and see if it's viable.
-Joel
Nylock nut on the back?
- Garro.
Re: Front Der. Direct Mount
That would certainly work but I though it might be a PITA, especially for trail-side repairs.
Re: Front Der. Direct Mount
Interesting design. I like the simplicity.
I have no experience with direct mount front derailleurs, but I do design bent steel parts for my day job.Your inner bend radius (1.59mm) is a little too tight for the 1.9mm material thickness. It should be closer to 1.98mm, at least.
Re: Front Der. Direct Mount
Here's a link to the PEM nuts I was talking about. Seriously awesome. I use them all over on the automated equipment I build. Never had one fail or pop out.
PennEngineering Video and Animation Library
Re: Front Der. Direct Mount
Joel - Here I was "thinking" that the recessed nut was actually just a bottle boss. I suppose if you are having this stamped/bent in a few ops, they could stamp a recess to register a bottle boss that then the builder could braze / file flush. Just a thought.
I like it though.
Re: Front Der. Direct Mount
Nice joel, i like it. I would lay a couple out as drawn and then bend them before you pay to have any laser cut. I could be wrong but I'm thinking that the proximity of the end of the slot to the bend line is going to create some unwanted distortion.
That part looks like it could be designed to be laser cut from a tube as well. Looks like some 1.25" square tube by .083 wall would be perfect.
just spec it so the weld in the tube is to the waste side....;
http://www.youtube.com/watch?v=QoF1nxKW0vw
edit; i think places with machines like this are fairly common these days, shouldn't be hard to find one.
Re: Front Der. Direct Mount
I'm getting (25) mitered and (25) non-mitered version made next week. Once I confirm they work I'll offer them for sale.
Thanks, Joel