Author Topic: Stiff hinges  (Read 768 times)

quixoticgeek

  • Mostly Harmless
Stiff hinges
« on: February 16, 2020, 10:12:11 pm »


The main frame hinge is getting really stiff now.

What have people found most effective to lube this hinge? Would chain lube work? Wd40? Or should I invest in some sort of penetrating oil?

Thanks

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

bludger

  • Randonneur and bargain hunter
Re: Stiff hinges
« Reply #1 on: February 16, 2020, 10:20:06 pm »
YACF touring/audax bargain basement:
https://bit.ly/2Xg8pRD



Ban cars.

Re: Stiff hinges
« Reply #2 on: February 16, 2020, 10:24:36 pm »
A couple of drops of chain oil normally does the job.

I assume you mean Brompton and not knees.

Re: Stiff hinges
« Reply #3 on: February 16, 2020, 10:31:50 pm »
I'd use Boeshield T-9 if you can get it. Great for chains too.
I use white grease, but might try that. As you say, if I can get it.

Re: Stiff hinges
« Reply #4 on: February 17, 2020, 10:53:35 am »
You should also carefully examine where the apparent tightness is coming from, and especially if all components are aligned as intended. Sometimes with folders, wear (or, loosness) in one component shows up as tightness in another. Reversing gravity whilst observing the interplay of all components is good for that. (Turn it uʍopǝpᴉsdn  and see if it rattles)

quixoticgeek

  • Mostly Harmless
Re: Stiff hinges
« Reply #5 on: February 17, 2020, 11:14:49 am »

I put a couple of drops of Chain-L lube on the hinge last night. Will see how it is this afternoon when I ride to the shops.

Thanks all!

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

jiberjaber

  • ... Fancy Pants \o/ ...
  • ACME S&M^2
Re: Stiff hinges
« Reply #6 on: February 17, 2020, 12:50:24 pm »
Dental floss and a spray of gt85 sorted mine. I also took the opportunity to take out the bolts and clean and add some light grease.

Much improved!
Regards,

Joergen

quixoticgeek

  • Mostly Harmless
Re: Stiff hinges
« Reply #7 on: May 10, 2020, 06:38:10 pm »


It doesn't seem to have made a major improvement in hinge performance.

How easy is it to remove the hinge pin and reseat?

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

LittleWheelsandBig

  • Whimsy Rider
Re: Stiff hinges
« Reply #8 on: May 26, 2020, 10:50:16 pm »
The hinge pin needs to be drilled to remove the flare and then driven out. A replacement pin is pushed in and flared. You may wish to ream out the hinge. The three pin sizes are nominally 6.0mm, 6.1mm and 6.35mm to compensate for wear.
Wheel meet again, don't know where, don't know when...

Re: Stiff hinges
« Reply #9 on: May 27, 2020, 08:22:58 am »
My Brompton isn't getting used daily, as it usually would, because of not commuting. I'm finding that the hinges get stiff if not used. I had trouble unfolding it yesterday.

quixoticgeek

  • Mostly Harmless
Re: Stiff hinges
« Reply #10 on: May 27, 2020, 12:51:52 pm »
The hinge pin needs to be drilled to remove the flare and then driven out. A replacement pin is pushed in and flared. You may wish to ream out the hinge. The three pin sizes are nominally 6.0mm, 6.1mm and 6.35mm to compensate for wear.

I think that may be something I pay someone to do. Mostly so that if it goes wrong, it's their fault not mine...

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Re: Stiff hinges
« Reply #11 on: May 27, 2020, 06:50:42 pm »
I was about to make some comment about Hinge being a bit stiff, and Bracket’s looking worried.

But I’m probably the only person old enough to find it amusing!

LittleWheelsandBig

  • Whimsy Rider
Re: Stiff hinges
« Reply #12 on: May 28, 2020, 11:01:26 pm »
I understand the reference but have never actually heard/ seen them.

Just for completeness, the hinge pins also come in two lengths, one for LWB frame hinges (I have those in all diameters) and another for SWB frame hinges and handlebar stem hinges. All good fun.
Wheel meet again, don't know where, don't know when...