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Title: Momo maintenance and repairs Post by: sparkydave on November 14, 2005, 09:00:02 pm The logitech momo wheels are very popular with PC racers and seem to be great products until somthing goes wrong with them. most problems are reasonably easy to fix and there are some great guides out there like Mozzo's one here
http://web.axelero.hu/mozso/ (http://web.axelero.hu/mozso/) However I thought I would try to write a short guide on fully rewiring the "wheel to pedal cables" as this is where some have problems with very thin cores in the original logitech cable becoming damaged and broken and even problems with the 25 pin connector. I will post a step by step guide on how I rewired my wheel in a follow up post (hopefully with pictures) ,but for now I am just including some basic cable colour codes and a pinout I have made. the cable that connects to the wheel with a DB25 pin connector contains : the main power for the wheel , the digital USB cables and the analog pedal data cables and are as follows. USB CABLE COLOURS Red = V pin 1 White = D- pin 2 Green = D+ pin 3 Black = Ground pin 4 WHEEL POWER COLOURS Pink = Wheel power 24v pins 5&6 Grey = Wheel power 24v pins 7&8 PEDAL CABLE COLOURS Brown = R2 (gas + Break) pin 9 Blue = R1 (gas + Break) pin 10 Yellow = Break Center pin 22 Orange = Gas Center pin 23 pinout image below I hope this info may be of some use to anyone who is thinking of a DIY rewire more to follow . SD. Title: Momo maintenance and repairs Post by: Gopher04 on November 15, 2005, 07:47:12 am Here's another tip for the Momo FF Red, once you get the steering pot out, bite the little ball on the end which looks like a splitshot from fishing, close the gap so its nice and even and whooo no more shake and spiking again, plus you save yourself dosh from importing a new one..And always make sure your FF motor is secured nice and tight, they have a habbit of shaking themselfs loose..
Title: Momo maintenance and repairs Post by: P1LOT on November 15, 2005, 12:29:42 pm Yep, I've done plenty of those fixes by Mozo before.
Many times I've got spiking on the accelerator pedal, taken the pedals apart and done a general clean-up/regrease - applied tape on pivot to stop movement. Later, when this did not solve pedal spiking, I took the actual pot apart (as shown in the picture). Cleaned the resistive surface of the pot (with paint bursh cleaner and a cotton bud) and it made it better than new... for 6 months. I cut off the little blue plastic welds that hold the black case on, this allowed me to get inside. The black case went back on and held itself good enough without the need to glue. (http://www.burton3.vispa.com/pot.jpg) Another one; I got double downshifts on the left paddle switch, took the steering wheel apart (48 screws) and resoldered the microswitch onto the board to correct that. Title: Momo maintenance and repairs Post by: Gopher04 on November 15, 2005, 01:32:50 pm Tell you what Gav, we have been saying our pots are different, but not by much, very similier indeed, if that ball on the end of yours looks like a splitshot, bite it so the gap stays even, that cures mine..
Title: Momo maintenance and repairs Post by: Fordman on November 15, 2005, 05:56:28 pm Also, another tip. The bit in where that little ball sits, shove some blue tack down there, filling the hole. Then push the ball of the pot in it :lol: Hay look mum, its doesn't move, and hasn't for months now B)
@Gav - Your website doesn't work :o Title: Momo maintenance and repairs Post by: P1LOT on November 15, 2005, 07:04:18 pm Quote @Gav - Your website doesn't work :o Don't worry. It's planned maintenance and someone's on the case :)Another great tip; get Fordman to bring you back replacement pots from one of his trips to the States :D Title: Momo maintenance and repairs Post by: sparkydave on November 15, 2005, 07:56:20 pm the pots in my red momo pedals are different looking metal pots to those flashy new plastic ones see pic,
I know the plastic ones shown above by P1lot are also in most of the black momo pedals and possably in the DFP pedals too . SD. Title: Momo maintenance and repairs Post by: three_jump on November 15, 2005, 08:58:10 pm have the same pots as dave in my dfp
Title: Momo maintenance and repairs Post by: Gopher04 on November 15, 2005, 09:46:04 pm Wonder if the bluetak will work on the steering pot as well.. <_<
Title: Momo maintenance and repairs Post by: Fordman on November 15, 2005, 11:40:44 pm Good Idea Mark, might try that
Title: Re: Momo maintenance and repairs Post by: Joey on February 17, 2009, 07:55:27 am The logitech momo wheels are very popular with PC racers and seem to be great products until somthing goes wrong with them. most problems are reasonably easy to fix and there are some great guides out there like Mozzo's one here http://web.axelero.hu/mozso/ (http://web.axelero.hu/mozso/) However I thought I would try to write a short guide on fully rewiring the "wheel to pedal cables" as this is where some have problems with very thin cores in the original logitech cable becoming damaged and broken and even problems with the 25 pin connector. I will post a step by step guide on how I rewired my wheel in a follow up post (hopefully with pictures) ,but for now I am just including some basic cable colour codes and a pinout I have made. the cable that connects to the wheel with a DB25 pin connector contains : the main power for the wheel , the digital USB cables and the analog pedal data cables and are as follows. USB CABLE COLOURS Red = V pin 1 White = D- pin 2 Green = D+ pin 3 Black = Ground pin 4 WHEEL POWER COLOURS Pink = Wheel power 24v pins 5&6 Grey = Wheel power 24v pins 7&8 PEDAL CABLE COLOURS Brown = R2 (gas + Break) pin 9 Blue = R1 (gas + Break) pin 10 Yellow = Break Center pin 22 Orange = Gas Center pin 23 heres the pinout image: (http://i27.imagethrust.com/i/65859/db25momo01.jpg) (http://www.imagethrust.com) I hope this info may be of some use to anyone who is thinking of a DIY rewire more to follow . SD. Thanks for the guide, it has come in handy, but unfortunately my biggest problem is that I need a wiring diagram for the seven pin connector plug that runs from the pedals to the main unit, I had a fault and in trying to get the plastic cover off have lost all track of what wires go where to the plug, if yourself or anyone else could help out here, that would be awsomely apreciated. Title: Re: Momo maintenance and repairs Post by: sparkydave on February 18, 2009, 10:11:07 am Hi Joey
Its been a while since I used that momo wheel, I don't remember a 7 pin connector on mine, only a 25 pin one. Can you confirm what make, and exact model of wheel you are having problems with, maybe one of us could help. SD. Title: Re: Momo maintenance and repairs Post by: Joey on February 19, 2009, 06:35:27 am Hi Joey Thanks for the reply,Its been a while since I used that momo wheel, I don't remember a 7 pin connector on mine, only a 25 pin one. Can you confirm what make, and exact model of wheel you are having problems with, maybe one of us could help. SD. Its a Logitech Momo Racing force feed back wheel, with the black rubber steering wheel with the red rally style anodized marker at the top of the wheel. Sorry I don't know much more about it, I am ceartan it is a 7 pin plug though. It was pretty impossible to get the plastic off the back of the plug without taking the wires off unfortunately. Title: Re: Momo maintenance and repairs Post by: sparkydave on February 20, 2009, 02:03:37 am Ahh yes the old trusty "black momo" :) I dont have one to test for you at the moment, but I do know where there is one I should be able to get my hands on, not sure of the timescale, it might take me a couple weeks before I can get it.
As soon as I can get it Ill let you know the pinout for that plug. In the meantime can you post a nice size pic, or list of the colour wires you have IIRC you should have black green white and red, and maybe a ground shield. Did you take it to peices because it was broken? are you sure its the plug and not the socket? I hope to have some help for you soon. SD. Title: Re: Momo maintenance and repairs Post by: Joey on February 21, 2009, 04:58:59 am Ahh yes the old trusty "black momo" :) I dont have one to test for you at the moment, but I do know where there is one I should be able to get my hands on, not sure of the timescale, it might take me a couple weeks before I can get it. I found a lead in the plug to be broken, the red wire which was loose for months and finally let go :wacko:. and its red black green white. It was just how it went with the plastic surround on the plug which made it impossible to reach the back of the plug, all in all I could have done some better decision making to not put myself in this situation... As soon as I can get it Ill let you know the pinout for that plug. In the meantime can you post a nice size pic, or list of the colour wires you have IIRC you should have black green white and red, and maybe a ground shield. Did you take it to peices because it was broken? are you sure its the plug and not the socket? I hope to have some help for you soon. SD. I really apreciate your help mate and I dont mind being patient! It has just been an annoying situation because it is still a quality bit of gear and works great with all the millions of practice laps I do on rFactor. Thanks mate. Title: Re: Momo maintenance and repairs Post by: sparkydave on February 21, 2009, 05:15:21 pm Hi again Joey, you will be glad to know I have picked up the wheel this afternoon, The cable connections are as follows:
They use a DB9 connector with the 2 outer pins (1 & 5) removed, so the pins left are 2,3,4 and 6,7,8,9 Red connects to pins 4 & 9 Green connects to pins 3 & 8 White connects to pins 2 & 7 Black connects to pin 6 If you have a shield wire connect it to the metal outer part. this one didnt have any shield. Its probably clearer in the picture attached. Good luck. EDIT I forgot to say, as per the pic, the plug is viewed from the FRONT. SD. Title: Re: Momo maintenance and repairs Post by: sparkydave on February 21, 2009, 10:23:49 pm Ive updated the pictures from dead links in page1.
Title: Re: Momo maintenance and repairs Post by: BBO on February 21, 2009, 11:18:58 pm Ive updated the pictures from dead links in page1. Now it all makes much more sense.Thx Sparky :icon_thumleft: Title: Re: Momo maintenance and repairs Post by: Joey on March 03, 2009, 07:21:39 am Hi again Joey, you will be glad to know I have picked up the wheel this afternoon, The cable connections are as follows: They use a DB9 connector with the 2 outer pins (1 & 5) removed, so the pins left are 2,3,4 and 6,7,8,9 Red connects to pins 4 & 9 Green connects to pins 3 & 8 White connects to pins 2 & 7 Black connects to pin 6 If you have a shield wire connect it to the metal outer part. this one didnt have any shield. Its probably clearer in the picture attached. Good luck. EDIT I forgot to say, as per the pic, the plug is viewed from the FRONT. SD. Text can not express how much I appreciate your help. Without your work my $120 wheel would now be worthless! Thanks mate. |