DIY G27 load cell brake, help

[The Walker]

As posted on reddit: I want to add a load cell to the G27 brake pedal, since the one from ricmotech costs 120+shipping and it's too much, the ap electrix seems discontinued and I see no other LC mods.
I have something in mind, this is the idea (I'll use reference pics): the idea is to remove the black spacer from the brake pedals (the red circle in the pic)

And replace it with a parallel beam load cell like this one, 50 kg should be enough

Then I'll use Leo Bodnar's load cell amplifier (http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=199). I was also thinking to replace the spring with the Nixim one to have less travel.

Will it work?

 

[callumjtc]

I can se it working, however I think it would not feel quite right to use, as there will be the same force being put into the game until you hit the end of the pedal travel (if using a linear spring) at which point there will be an exponential increase.

 

[The Walker]

I can se it working, however I think it would not feel quite right to use, as there will be the same force being put into the game until you hit the end of the pedal travel (if using a linear spring) at which point there will be an exponential increase.

Yeah, that's why I want to add a custom spring, like GTEYE or Nixim, or add a big piece of rubber to the spring to shorten the pedal travel

 

[asteroulis]

The way a pedal feels is one thing, and how this feeling is translated to braking power is another.
With the LC you'll have always the right translation. What you feel is what you get. If you change spring /rubber /whatever changes the feeling you can achieve the feel that you desire. Even in stock spring you can calibrate the brake to give it's maximum brake at the end of the spring and not beyond that.
In any case, yes the mod will work and is ideal because you'll be able to play with different stiffness and materials without the mod getting in the way.

 

[BGelsi]

As posted on reddit: I want to add a load cell to the G27 brake pedal, since the one from ricmotech costs 120+shipping and it's too much, the ap electrix seems discontinued and I see no other LC mods.
I have something in mind, this is the idea (I'll use reference pics): the idea is to remove the black spacer from the brake pedals (the red circle in the pic)

And replace it with a parallel beam load cell like this one, 50 kg should be enough

Then I'll use Leo Bodnar's load cell amplifier (http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=199). I was also thinking to replace the spring with the Nixim one to have less travel.

Will it work?

 

[BGelsi]

Hello
I have been using this for a long time now on both Logitech and Thrust master pro pedals. Same setup as as AP Electrix
https://www.phidgets.com/?tier=3&catid=6&pcid=4&prodid=206
https://www.phidgets.com/?tier=3&catid=6&pcid=4&prodid=91

 

[blekenbleu]

I think you would find that wires from a sensor at the pedal spacer location would die from insulation chafing and/or conductor metal fatigue from flexing. Measuring force at the fixed bottom location would be more trouble-free.
A brake pedal wants nonlinear force vs linear from a (stiffer) coil spring. The G29 rubber insert offers fairly realistic nonlinear resistance and should work nicely with a load cell or other force sensor of appropriate sensitivity.

 

[taytelaku]

Hello
I have been using this for a long time now on both Logitech and Thrust master pro pedals. Same setup as as AP Electrix
https://www.phidgets.com/?tier=3&catid=6&pcid=4&prodid=206
https://www.phidgets.com/?tier=3&catid=6&pcid=4&prodid=91

Can you post some pictures or explain how have you installed these on your pedals. Would be much appreciated. I'm not any good with electronics so I must ask that is the FlexiForce Adapter connected straight to the (eg. G27) pedals "own system" with those three wires leaving it?

 

[manu68]

You want Basically this.
https://revolutionsimracing.com/threads/t3pa-loadcell-upgrade-diy-guide.1588/

 

[taytelaku]

You want Basically this.
https://revolutionsimracing.com/threads/t3pa-loadcell-upgrade-diy-guide.1588/

Thx! This made it very clear.

 

[BGelsi]

Can you post some pictures or explain how have you installed these on your pedals. Would be much appreciated. I'm not any good with electronics so I must ask that is the FlexiForce Adapter connected straight to the (eg. G27) pedals "own system" with those three wires leaving it?

Sorry for the late reply.. I use Thrustmaster pedals and use the sensor under the pedal . it looks like you would be better off with what manu68 posted . GL with it