That is so awful; Its does not even appear to be one plate but two straps of alloy with no triangulation. Even if the lower mount stays rigid the calliper will rotate around lower mounting bolt, clash on the disc and just push the glued on top mount straight off. Its laughable its so cruddy. And you claim to be a mechanic and have good physics knowledge? thats one of the worst bodges have ever seen.
Any credibility you ever had as a mechanic is just gone.
And you claim to be a mechanic and have good physics knowledge?
Any credibility you ever had as a mechanic is just gone.
Teej, and you claim Al makes ad hominen attacks on you? That was a bit mean.
It’s hard to tell from the pics, but at first glance it looks risky..
It seems that any resistance to rotation is reliant on the frictional force in the bolts, and the stiffness of the glue joint? Which are both, ummm not good. Is the spoon connected to anything else in any way other than the single bolt and the glue? (I’m hoping there is something we have missed which isn’t obvious?)
TandemJeremy – Member
That is so awful; Its does not even appear to be one plate but two straps of alloy with no triangulation. Even if the lower mount stays rigid the calliper will rotate around lower mounting bolt, clash on the disc and just push the glued on top mount straight off. Its laughable its so cruddy. And you claim to be a mechanic and have good physics knowledge? thats one of the worst bodges have ever seen.
Any credibility you ever had as a mechanic is just gone.
I truly am sorry that I appear to have sufficiently upset you to make you act like a crying schoolboy and type without thinking.
Here’s a clearer pic, have a think about what you see and see if you want to revisit any of the above before I destroy it. Oh and how is my ability as a mechanic (proven in various lbs over decades) related to my ability as a designer/fabricator? A mere moment’s thought establishes the 2 are quite different.
toys19 – Member
It seems that any resistance to rotation is reliant on the frictional force in the bolts, and the stiffness of the glue joint?…Is the spoon connected to anything else in any way other than the single bolt and the glue?
It’s not a spoon, it’s 4mm plate steel 🙄 the lower mount is bolted on by 2 M5 bolts to the frame, the upper mount is glue/CF wrap, under the wrap the arm is about 2″ long where if mates to the stay.
Robz – Member
Why even go to the effort to do all that for a cable disc?
I don’t understand.
(1) You can’t get hydraulic discs for drop bar brake levers and (ii) they work as well as hydraulics.
trailertrash – Member
sure looks like it….why has he done that….and to a Ti frame no less?
ti frame – ideal for the bike’s purpose, easy to remove the mount & revert if it doesn’t work out – would be a lot more tricky if the frame was painted.
You lot really haven’t thought your flaming through at all have you?[/b]
Al you cheeky bugger I was trying to be constructive not flame you. Unless the top mount is connected to the caliper by some method other than the single bolt then it looks to be a risky design.
toys19 – Member
Al you cheeky bugger I was trying to be constructive not flame you. Unless the top mount is connected to the caliper by some method other than the single bolt then it looks to be a risky design.
It’s more to do with the single mount of the bolt onto the frame (if you know what I mean) I think we are essentially saying the same thing. This will cause big bending moments in your frame which are not a good idea.
It’s more to do with the single mount of the bolt onto the frame (if you know what I mean) I think we are essentially saying the same thing. This will cause big bending moments in your frame which are not a good idea.
TBH I think they are both equally likely to fail for the same reason.
I think Al is trolling, winding us up or carrying out some kind of social experiment..
Sorry toys I wasn’t intending to include you among the lame-flamers.
Look at the line of force into the top arm – what would adding a strut to it achieve? Remember the two bolts are connected by the solid brake mount, and the rear bolt is rigidly mounted by a triangulated strut.
It may of course break! 😀 Truth is I made it that way as I’d kind of f**ked up the mount first time round and CBA making a whole new one 😎 and my plate of steel is getting small 🙁 if it does break a beefier one will follow
Do yourself a favour, sort out a triangular spoon for the top mount then the caliper won’t be able to rotate (well not without bending the stay anyway) and you’ll be a lot less reliant on that black scab holding the whole thing together.