When is a Sticking Brake Pedal Not a Load Cell Problem?

[Owen Meany]

I broke down the pedals and made sure nothing was sticking. It did not appear anything was but I did file down the pedal points that come into contact with the base plate. The "foam" inside the brake piston housing did not slide out and when looking inside it appear very odd, i.e. not the smooth end of the foam I have seen in the Clubsport pedals. The foam looked very "crushed" or crammed down.


Bottom line Question: Do the load cells contribute in anyway to the recoil of the brake pedal to its upright position?


Other Question: Should the foam fall out of the housing? Should I just order a load cell and expect the problem to be resolved?


Thanks, jtb

 

[Owen Meany]

No one? I little help, please.....

 

[JohnBodin]

It would certainly help if you gave us some small clue as to what pedals you're using.

 

[sagaper]

Maybe this can help

https://www.gtplanet.net/forum/thre...ogitech-g25-g27-pedal-pontentiometers.247510/

 

[novadave]

To answer your question.
The P.U. Foam insert and the loadcell together do not store enough release energy on there own to fully return the pedal to it`s rest position. The coil spring has the job of returning the pedal to the rest position.
The P.U.Foam insert should not be mushroomed on the ends ( should be flat ). Otherwise this can result in a pedal that will not fully release pressure from the loadcell. ( upon release the brake will stay partially applied ).
Over time the foam insert becomes soft and instead of transferring all the force that you apply to the pedal - some of it is lost due to the foam insert expanding inside the piston bore which simply increases friction.
This effect can first be noticed by the need to press on the brake pedal more than usual to get the same braking as when it was new.
In other words the foam should be firm enough so that when being compressed along it`s length - it can transfer all the energy needed to create the necessary pressure on the loadcell before the foam begins to expand in it`s bore.
If the foam expands along it`s diameter before creating enough pressure to the loadcell then you would not get enough braking effect and the brake will stay partially on after release.

 

[mika haka]

Sounds like the spring.