Sega Nascar Racing conversion

[fablog]

I bought a Sega Nascar Racing cabinet in a good shape for a 20 years old cabinet. 400$ CAD shipped (approx 300$USD).












I will follow this exact same project on Youtube to restore mine and convert it to a PC cab.

[yellowmustard]

nice project, the one from Pascal?

[fablog]

nice project, the one from Pascal?

Yes it is. Nice guy!

Envoyé de mon LEX722 en utilisant Tapatalk

[fablog]

I tried to clean the seat today but couldn't get a good result. What product do you recommend?

Envoyé de mon LEX722 en utilisant Tapatalk

[nipsmg]

I tried a magic eraser (like everyone recommended) and had no luck on my seat for my SF Rush the Rock cabinet.

My best results (believe it or not) were with Chlorox (bleach) cleaning spray and a paper towel.  Spray on, let it sit for a minuet, then scrub.  Use a little pressure to get into the crevices.

[fablog]

No discoloration?

[Howard_Casto]

I'd try simple green or a vinyl siding cleaner.

[fablog]

OK, I will try that!

I cleaned all the cabinet except the cushion seat.











Not so bad for 20 years of dirt:



Vacumed and Power washed:



The final result:

[fablog]

Just bought a G27. I would like to keep the original arcade shifter and pedals. What do you suggest to do?

Envoyé de mon LEX722 en utilisant Tapatalk

[Howard_Casto]

Pedals are easy.... they are just pots so swap the current pots out with the ones of the correct value (I think it's 10k for logitech) and wire up a cable....you can plug them straight into your wheel.  For the shifter you'll have to probably make a stand alone interface via arduino or something similar as a logitech shifter uses analog values to determine the shift position while a sega shifter is all digital.  That being said, it's just a straight analog value being sent to the wheel, so it should be fairly easy to write an arduino program to read the switches on the joystick and send the appropriate values, so yes, with extra work, that could probably be hooked straight into the wheel as well.

[fablog]

Thanks Howard. I know not much about electricity, I'm only able to cut and connect cables 
That being said, reading this thread, it seem's I don't need to swap the pedal's pots: http://forum.arcadecontrols.com/index.php?topic=158631.0
What do you think?

[Howard_Casto]

I don't know if the logitech wheels use the pots as a voltage divider or not.  If they do then yes, it should be ok.  You should be able to find pinouts via a google search. 

[fablog]

I will follow your first advice Howard, It will be easyer to swap the pots. Anyone know what pot I should buy? (any link would be appreciated)

[PL1]

Anyone know what pot I should buy? (any link would be appreciated)

Long-life versions by Allen Bradley or Honeywell/Clarostat (RV4 series like this 5k one or this 10k one) are getting hard to find and those two don't have a flat on the shaft so you would probably want to cut one with a Dremel.



Another option is to check the manual to see if the original pots were PN 220-5373 or 220-5374 or 220-5484 -- not sure if Divemaster can special order it for you or if you'd have to order it direct from SuzoHapp.


Scott

[jennifer]

You are not kidding hard to find, them things are like gold anymore, The last ones I bought were like 50.00 apiece...A clever OP could almost buy a used part off E/pay (with the same values of course)or possibly an entire parts machine, and just rob the used pots off of it for about the same money... If you spray them (used carbon wafer) with a contact cleaner, and let dry completly before use (after spinning it back and forth to clean contact) it actually seems to bring them back into values, and prolong its life.

[fablog]

Thanks guys but it seem's I have to put a 10k pot, because the pedals will be connected to a G27 wheel.

[jennifer]

I think what he is referring to is "Heavy duty", they are a carbon disk, where the cheaper modern versions are impregnated plastic, Not as good, especially with heavy use.

[PL1]

Thanks guys but it seem's I have to put a 10k pot, because the pedals will be connected to a G27 wheel.

So . . . the 10k pot on Jameco isn't acceptable?

this 10k one

Scott

[fablog]

Scott, what's jameco? Maybe, there's something I don't understand. It seems, I need to swap my 5K pot in my Sega Nascar racing by a 10K pot, because I will connect the sega pedals to my G27 wheel. Is it right?

[baritonomarchetto]

From my personal experience I would say get those less than 1 euro potentiometers on ebay or bangood or wherever you want and live well. Those long life pots made sense in a "going to be abused for years, by anyone" arcade cabinet, but for home use you will be fine with the cheaper option

[fablog]

From my personal experience I would say get those less than 1 euro potentiometers on ebay or bangood or wherever you want and live well.

Thanks 
Other than the ohms, what specs I should look for?

[Howard_Casto]

Get linear taper and not audio taper.  It's also nice to get the same turning radius, but that can prove impossible and you can calibrate your pedals anyway so I wouldn't worry about that too much.

[baritonomarchetto]

What Howard said. Linear potentiometers are those labelled "B".

[PL1]

If the original pots are still good, use them.
- No need to replace them unless they are not working properly.

Scott, what's jameco?

Guess you missed the links.   

It's an electronic supply company that currently has Clarostat/Honeywell RV4 series pots available.

https://www.jameco.com

5k pot - https://www.jameco.com/z/RV4NAYSD502A-Clarostat-Honeywell-22mm-Linear-Taper-Potentiometer-5K-Ohm-2-Watt-10-_13995.html

10K pot - https://www.jameco.com/z/RV4NAYSD103A-Clarostat-Honeywell-22mm-Linear-Taper-Potentiometer-10k-Ohm-2-Watt-10-_13952.html



There's also the option of this Sega pot from SuzoHapp. (It may be the same pot in your cab -- check the manual to verify)

https://na.suzohapp.com/products/driving_controls/220-5373

Divemaster's arcadeemulator.net site sells SuzoHapp products.  You might consider asking if he can special order them for you. (usually lower cost and lower shipping than ordering direct from SuzoHapp)

http://www.arcadeemulator.net/

It seems, I need to swap my 5K pot in my Sega Nascar racing by a 10K pot, because I will connect the sega pedals to my G27 wheel. Is it right?

That was a concern brought up in the G25 thread you linked above, but jonbenderr found that original arcade (5k) pots will work with the G25 system.

Wiring the original gas/brake pots into the g25 system works beautifully!!! 

I don't have a Logitech wheel/pedals so I can't give any specific advice concerning G25/G27 mods, but here are two basic "electronics-101" analog encoder setup options.

- If the pot is in a 3-wire (potentiometer) configuration, it acts as a voltage divider and the encoder is measuring the voltage on the center tab. (wiper)
-- From what I've seen, this is how the G25/G27 pedals are configured.
-- The pot resistance does not have to match the original in this setup.

- If the pot is in a 2-wire (variable resistor) configuration, it acts as a variable resistor and the encoder is measuring the resistance between the center tab and one of the outer tabs.
-- The pot resistance  in this setup must match the original in this setup.


Scott

[fablog]

Thanks PL1, it's crystal clear!

Envoyé de mon LEX722 en utilisant Tapatalk

[fablog]

I'm wondering how to connect my computer to the original speakers (4 speakers with a SW). The problem is I only have a stereo output jack, no spdif output and no empty PCI slot to plug a sound card. I have an old 5.1 Denon home theatre amp. I checked for an USB external sound card but I worried about the amp inside...

Any idea?

Envoyé de mon LEX722 en utilisant Tapatalk

[aevans0001]

i used this on my Cart Fury (Cruisin USA) Arcade

https://www.amazon.com/gp/product/B07KWS33LP/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

[fablog]

Thanks but I need a 5.1 system.

Envoyé de mon LEX722 en utilisant Tapatalk

[fablog]

I found this https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.ca/-/fr/AmazonBasics-Convertisseur-extracteur-Compatible-Blue-Ray/dp/B07KRWYN4R&ved=2ahUKEwj_j6mJw7_sAhXjQ98KHRDiAzEQFjAAegQIARAB&usg=AOvVaw0_URHqi41MAHuUjh8RQhY7. Do you think it could work with an old Denon AVR. My goal is to get all the audio channels from Teknoparrot Games.

Envoyé de mon LEX722 en utilisant Tapatalk

[fablog]

I thought it would be easy to connect the Sega pedals to the G27, but no! I used a DB9 connector  and soldered pin1 with the 5v, pin2 with the accelerator, and pin6 with ground. I get nothing when I tried to test the pedal in windows. I test the break pedal after and....nothing. I'm wondering if the Sega pots are still working. Any idea how to find the problem?

Update: I just saw another G27 pinout and it seem's pin6 and pin9 must be connected together. I'll try tomorrow (fingers crossed).

[baritonomarchetto]

Testing a potentiometer is easy: set your DMM to the right ohm range accordingly to the potentiometer value, put one DMM probe on the central pot pin (wiper) the other on one of the other two and turn the potentiometer from one side to the other, slowly. If you have a smooth value increase/decrease without out of range readings, the pot is ok.
Those pots are solid products but fail from time to time.
Honestly I would suggest you to check your wirings because even a defective (not fully broken) pot would give you some reading. Another possibility is that the G27 is picky on pots values (if they are used as variable resistors, for instance, you need the exact value to have it working correctly).

[fablog]

Thanks Baritonomarchetto I did like you said and it worked, yeah!!
Maybe I have a bad diagram. Here is what I used:


Or, my wiring is bad.

[Howard_Casto]

Yeah what you'll find on both the Logitech and thrustmaster pedals is that in a two pedal setup the third pedal is just grounded out in some way. 

[fablog]

I just rewired, only the gas pedal. I can measure variation at the end of the wire when I press the pedal. I have a doubt, the diagram show the rear (where I soldered the wires) or the front of the DB9 connector?

Envoyé de mon LEX722 en utilisant Tapatalk

[Howard_Casto]

On db connectors pin 1 is pin 1 regardless of the orientation.  You should be able to read numbers printed on the connector in very fine print molded into the plastic. 

[fablog]

That's it Howard, thanks! I didn't see the fine prints so I soldered backward.

Update: it works!! Thanks guys!

[baritonomarchetto]

Being that this is asked from time to time, let me highlight one thing: in the diagram potentiometers are used as voltage dividers (in contrast to variable resistors), so it should be possible to use also 5Kohm pots, commonly used in arcade games, in any of those positions (i.e. for brake, accelerator etc).
There no need to match the values of G27 potentiometers.

[fablog]

I confirm, it works!

Envoyé de mon LEX722 en utilisant Tapatalk

[fablog]

I installed a 32" curved screen (Philips 322E1C), it fits exactly.





I used this monitor holder: https://www.amazon.ca/-/fr/gp/product/B088G28B9R/ref=ox_sc_act_title_1?smid=A3IHYQHCQEL74D&psc=1

I tried the pedals and the G27 register a false clutch signal when I press the gas pedal. Do I need to wire the clutch pin with the ground wire?

[fablog]

 I grounded the clutch, problem solved!

Envoyé de mon LEX722 en utilisant Tapatalk