Working on my bike yesterday as I took it off the stand I heard a little noise as a small bolt fell onto the floor. It’s a T10 torx bolt, approx 8mm long. Can I find where it came from? Can I flip. Bike is an Evil Calling, Manitou Mattoc 3 forks, Sram 1X / X0 11 speed gears, hope X2/E4 brakes , One up dropper.
It looks a lot like a reservoir cap bolt but they are all present and correct, or a bolt from the Mattoc mudguard but they are all there. So – what other parts take short a T10 torx bolt? I swear someone has just put it somewhere to fall out to wind me up.

brake pads?

I’d check the calipers and dropper remote after that….not sure…

Holding in a gear/brake cable frame entry grommet thingy? Looking a picture of the calling, is there one of those expanding wedge things where it enters the swingarm to stop movement?

Probably a bit big, but rebound adjuster on the forks, or damper top cap?

Throw it in the bin, 5 mins later find out where it came from, spend the next 4 hours with the contents of the bin laid out on your driveway as you hunt for the bolt

Holding in a gear/brake cable frame entry grommet thingy?
Good guess but nope – they are all molded in with rubber grommets not bolted in.
Checked the rebound adjuster and not that.

Long-shotting it now. The little bolt that holds the derailleur-hanger onto the frame?

Did it sneak out from under the fridge/bench, jump up in the air and just pretend to have fallen off the bike?

There’s a very similar bolt 9n the Hope lever. It holds the dust seal in place over the master cylinder.

The difference is that it’s a security torx with a small pin in the middle of the head.

I also had similar bolts holding a head badge on.

Is it a bolt from the blue?

Ask it if it’s called Bernie. If it responds then it’s from the seventies?

Fork rebound knob?

Cable securing bolt from your dropper post lever?

I love this thread.

Its one you couldn’t find last time you tinkered. It got stuck on the bike , you couldn’t find it so replaced it and now it has shown itself to confuse you

Underside of the saddle?

Repair stand itself?

Or, it was on the repair stand, left over from a previous bike/job, and fell to the floor when you removed this bike?

Picture might be useful, against eg a 10p piece for size reference … I’m struggling to visualise an 8mm T10 torn bolt …

The little bolt that holds the derailleur-hanger onto the frame?
Nope

Is it a bolt from the blue?
Like it

Fork rebound knob
Nope. And don’t call me a knob.

Cable securing bolt from your dropper post lever?
Nope.

Its one you couldn’t find last time you tinkered. It got stuck on the bike , you couldn’t find it so replaced it and now it has shown itself to confuse you
I just dunno, I can’t find a similar bolt anywhere on the bike, I’ve gone over it with a torch today again. This thing is driving me crazy, perfect way to wind someone up I’d say. WHERE DID YOU COME FROM YOU SHINY LITTLE BASTARD

Pedal pin?

Picture might be useful

Hope brakes? Some models use these bolt to secure the lever piston or to secure the lever pivot

Are you sure it is what fell? You’re not missing a bloody obvious m10 bolt that should be holding a pivot somewhere but found that on the floor are you?*

Bolt that holds the lever of a “maxle”? Shifter cover? The one that stops the receiver nut for the axle falling out of the frame (mine is a v1 following and uses a grub but about the same size)

*I have never done this. No, not at all.

Those button heads are often used to hold brake discs on but it looks a bit small.what is the thread size?

Looks rotor ish?

Another vote for brake rotor bolt. Love the photo.

Brake hose clamp-thingy on the fork leg?

Systematic check to every bolt on every component throughout the entire bike.

I think there should be a prize for guessing correctly.

Are you absolutely sure not had any ‘mates’ over, who’ve succeeded in ripping the piss by dropping a random bolt?

I had this recently, turned out it was from the work stand itself!

Brake hose clamp-thingy on the fork leg?

Ooh, good call!

Rotor bolts tend to be T25

wishiwascalledsteve
Full Member
Hope brakes? Some models use these bolt to secure the lever piston or to secure the lever pivot

Winner winner! it was on the hope master cylinder, the bolt that holds the lever pivot as suggested!
Thanks all!