Stuck pedals

[biking_fox]

Any tips on how to remove a pair of pedals? They've been on the bike 8 years or so and done a few thousands of miles. I tried standing on the spanner, but they weren't shifting (yes I do know the left pedal is reverse threaded). I've sprayed GT85 in, and tapped with a hammer to loosen them. No avail.

I can take to the bike shop but would rather do at home if possible.

Thanks for all advice

 

[KneesUp]

Penetrating oil is better than GT85. I took the cranks off and put them face down and dribbled a bit in each day for a week or so, then put them back on the bike and stood on the spanner.

 

[Markymark]

I had to get a big old spanner and stand on it bouncing to get them undone once. Did the trick eventually.

 

[User6179]

Something long like a bit of scaffold pole or similar to go over the spanner should do the trick .

 

[Deleted member 35268]

I too have the same issue.

 

[Drago]

Just to be sure, you are aware they're handed and turn in different directions?

 

[Tim Hall]

Just to be sure, you are aware they're handed and turn in different directions?

From the OP

(yes I do know the left pedal is reverse threaded)

 

[Dogtrousers]

If they're ones that undo with an Allen key rather than a spanner, then it is possible for an idiot to become confused over which direction in which to turn, because you look at the Allen key from the back. DAHIKT.

 

[Drago]

From the OP

And he's turning them both in the correct direction, is what I meant?

 

[biggs682]

oh dear , if using allen key from behind a pr of flat bars slid over the end can provide more leverage

 

[raleighnut]

Easy way to remember is put pedal arm pointing forwards and spanner pointing backwards, then press down on spanner.
(even works with the bike upside down)

 

[biking_fox]

Update:
No luck. Took to bike shop - "Oh we can do that for you in a minute or two". No luck - booked in for "heat treatment". Nope those pedals are not shifting a fraction of an inch. Shop are going to order in some new cranks for me and replace the lot. - Given that the cranks are physically worn with a notable grove where the toeclip strap has brushed past them, it is probably time they were changed anyway.

 

[Apollonius]

I removed some stuck pedals that had been in situ for 60 odd years by taking the cranks off and putting them in the oven for a bit.

 

[Trull]

Heat and "Shock'n'unlock" will prevail… dunking the pedal/crank into a container filled with an ultralight penetrating oil will help - something like Iso Propyl Alcohol will help a lot. Leave it there for a week, occasionally heating up the crank then dunking it into the liquid to help draw in the oil.

 

[HOU5EY]

I have the same problem and now after trying so many times and actually breaking a couple of spanner it's started to round off. Is that time to give up and replace the entire crank?