Hope 1 light mount

[summerdays]

For most of this year the bolt has been absolutely fine ... but recently the bolt that holds the light casing onto the clamp seems to keep working its way loose. I've tightened it up again and within a week or so it's worked loose ... it was really annoying the other day as it meant the light was bouncing all over the place especially every little bump on the road surface.

What can I do to stop the bolt coming undone like this?

 

[rusky]

Mine does that too. I don't want to go OTT & knacker the plastic mount. You could try something like nail varnish across the screw & plastic, not sure if it would affect the plastic though.

 

[andrew_s]

There should be a small O-ring that gets clamped between the mount and the base of the light when you do up the screw.
Did you throw it away with the packaging? Or has it perished and fallen out?

 

[rusky]

the O ring is still there on mine, it's only 3 months old.

 

[Flying Dodo]

When I first got mine, I had the same issue. After having the lights almost fall off a few times, I just tightened them up extra tight using a lot of leverage and they've been fine since. It's been around a year since I did that.

If you're still having problems, contact Hope and see what they suggest.

 

[BlueDog]

I have exactly the same problem with mine, which has put an end to my night rides for the time being.

I think what contributed to my problem was the rough roads causing vibration and a fair bit of lateral movement from me as I was pointing it left and right as I was going into the bends on the country roads.

The main suggestion I received was also nail varnish. I've yet to try it because it’s too damn cold out there anyway, but when I do, I’ll let you know how I get on.

Incidentally, the rubber seal on mine overhangs the front block and and means it partially sits in thin air and must be making a difference. Makes me wonder if the position of the hole is too far forward

Do you know if yours is similar?

 

[potsy]

Have you any Loctite Summerdays? Should be perfect for that.

 

[rusky]

Have you any Loctite Summerdays? Should be perfect for that.

Assuming you use the right one should you ever need to undo it

 

[rusky]

I have exactly the same problem with mine, which has put an end to my night rides for the time being.

I think what contributed to my problem was the rough roads causing vibration and a fair bit of lateral movement from me as I was pointing it left and right as I was going into the bends on the country roads.

The main suggestion I received was also nail varnish. I've yet to try it because it’s too damn cold out there anyway, but when I do, I’ll let you know how I get on.

Incidentally, the rubber seal on mine overhangs the front block and and means it partially sits in thin air and must be making a difference. Makes me wonder if the position of the hole is too far forward

Do you know if yours is similar?

The O ring desn't overhng on mine but the hole is in the same place as yours

 

[summerdays]

Well I took it apart and the O ring is still there ... and sits in the black plastic bit of the clamp.

I've not got any lock tight ... which one would I need ... and what else could I use it on... I could get some for Mr Summerdays stocking

 

[potsy]

Well I took it apart and the O ring is still there ... and sits in the black plastic bit of the clamp.

I've not got any lock tight ... which one would I need ... and what else could I use it on... I could get some for Mr Summerdays stocking

You could try any king of glue for now,put a dab on,tighten the bolt as far as you dare and leave. See how it fairs for a few days. If it still comes loose then go for some Thread Lock type stuff.
Must be all the bunny hopping and wheelies you pull

 

[rusky]

Well I took it apart and the O ring is still there ... and sits in the black plastic bit of the clamp.

I've not got any lock tight ... which one would I need ... and what else could I use it on... I could get some for Mr Summerdays stocking

Take your pick...

Loctite 221 Threadlocking - Low strength, low viscosity, small threads Threadlocker
Loctite 222 Threadlocking - Low strength, general purpose Threadlocker
Loctite 2400 Threadlocking - Medium Strength Threadlocker "white" Material Safety Data Sheet
Loctite 241 Threadlocking - Medium strength, low viscosity, small threads threadlocker
Loctite 242 Threadlocking - Medium strenght, medium viscosity, general purpose threadlocker
Loctite 243 Threadlocking - Suitable for all metal threaded assemblies.
Loctite 245 Threadlocking - Medium strength, medium viscosity, large threads threadlocker
Loctite 248 Threadlocking - Medium strength threadlocker (stick)
Loctite 262 Threadlocking - High/Med Strength Torque Tension Threadlocker
Loctite 268 Threadlocking - High Strenght Threadlocker (Stick)
Loctite 270 Threadlocking - High Strength Threadlocker
Loctite 2700 Threadlocking - High Strength Threadlocker “white” Material Safety Data Sheet
Loctite 2701 Threadlocking - High strength, especially for chromated surfaces Threadlocker
Loctite 271 Threadlocking - High strength, low viscosity Threadlocker
Loctite 272 Threadlocking - High temperature, high strength Threadlocker
Loctite 275 Threadlocking - High strength, high viscosity, large threads Threadlocker
Loctite 276 Threadlocking - High strength, especially for nickel surfaces Threadlocker
Loctite 277 Threadlocking - High strength, high viscosity, large threads Threadlocker
Loctite 278 Threadlocking - High Strength, high temperature Threadlocker
Loctite 290 Threadlocking - Penetrating Threadlocking Compound

Seriously though, 221 or 222. I wouldn't reccomend superglue it's not easy to get things apart.