Colin
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« on: July 29, 2017, 06:54:10 pm » |
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I have read a lot on here about the various problems people have had with sloppy gear linkages. I have a few issues with mine, so far I have changed all the ball joints (with the kit from Matra Magic), the top hat washer and the nylon bushes on the fulcrum on the gearbox (with bronze ones from Simon). However I am still having difficulties with setting the linkage up properly. I can now get all the gears, but it is far from precise. when trying to select 5th I frequently get 3rd, and the same for reverse and 4th. I can adjust it to make it more precise, but in doing so I lose 2 gears, either 1st and 2nd, or 5th and reverse. I am wondering if there is any kind of datum I can find to work form, or if there is a standard length to set the 2 front rods to. The issue is with the left/right movement of the gear leaver, not the forwards/backwards.
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Jon Weywadt
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« Reply #3 on: July 30, 2017, 12:17:21 pm » |
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@GP where did you get the nylon clamp assembly? Homemade? I made a similar support but not as elegant ![Embarrassed](http://www.matrasport.dk/forum/Smileys/default/embarrassed.gif) One major problem on mine was that the "L" bracket on the gearbox (item E on Anders drawing) was 'frozen' so it pivoted by moving the bolt rather than pivoting on the bolt. Fixing that, replacing the bronce bearing on the end of the gear shifter, and adding the support around the shifter pipe, solved most of the problem. The support makes the shift a bit 'stiff' from side to side, so I have a plan to instal a universal joint in the shifter tube about 6" in front of the support.
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Colin
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« Reply #4 on: July 30, 2017, 06:26:00 pm » |
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Thanks for the advice so far...
I have only ever driven this Murena, and a Peugeot 1.9 engined one I had last year, so I may be being too fussy, and expecting a very precise gear change.
further investigation has revealed that the gear lever has no slop in it at all, and has a metal ball on it, not a nylon one. A long ish run today had proved that it is ok as it is, but I think there is still room for improvement. The play is very visible, when operating the linkage from underneath. The longitudinal rod moves a long way (around 2 inches at the top end of the gear lever) before it begins to move the front horizontal link (D on the above diagram), but there is no play anywhere else in the system. When the car is put into 5th, the lever springs back to where you would expect to find 3rd.
Has anyone attempted to make a Ferrari-esque gated gear lever base? This may stop it springing around, as mine seems to do.
It is my understanding, from what I have read on here, that the lever needs to swing, rather than just rotate. How do you get on with the extra support bush? it seems to work against the geometry of everything else.
To summarise; the top hat washer in the end of B is new, as is the ball joint at the other end. D, F & K are all new, and there is no slop in the ball on the lever...
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GP
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« Reply #5 on: July 30, 2017, 06:53:55 pm » |
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@GP where did you get the nylon clamp assembly? Homemade? I made a similar support but not as elegant ![Embarrassed](http://www.matrasport.dk/forum/Smileys/default/embarrassed.gif) One major problem on mine was that the "L" bracket on the gearbox (item E on Anders drawing) was 'frozen' so it pivoted by moving the bolt rather than pivoting on the bolt. Fixing that, replacing the bronce bearing on the end of the gear shifter, and adding the support around the shifter pipe, solved most of the problem. The support makes the shift a bit 'stiff' from side to side, so I have a plan to instal a universal joint in the shifter tube about 6" in front of the support. Hello Jon, The split nylon hydraulic pipe clamp assembly came from a ship yard in Norway and I drilled it to suit. I do have a spare one if you p.m. me your address I will post F.O.C. The universal joint in the shifter tube is a good idea to try. Cheers, Graham
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Anders Dinsen
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« Reply #12 on: August 01, 2017, 08:39:12 pm » |
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It is a 1983 car, so does not have that arrangement. I will take a video of what is happening, next time I jack it up.
Thanks for the advice so far...
I have only ever driven this Murena, and a Peugeot 1.9 engined one I had last year, so I may be being too fussy, and expecting a very precise gear change.
further investigation has revealed that the gear lever has no slop in it at all, and has a metal ball on it, not a nylon one. A long ish run today had proved that it is ok as it is, but I think there is still room for improvement. The play is very visible, when operating the linkage from underneath. The longitudinal rod moves a long way (around 2 inches at the top end of the gear lever) before it begins to move the front horizontal link (D on the above diagram), but there is no play anywhere else in the system. When the car is put into 5th, the lever springs back to where you would expect to find 3rd.
Has anyone attempted to make a Ferrari-esque gated gear lever base? This may stop it springing around, as mine seems to do.
It is my understanding, from what I have read on here, that the lever needs to swing, rather than just rotate. How do you get on with the extra support bush? it seems to work against the geometry of everything else.
To summarise; the top hat washer in the end of B is new, as is the ball joint at the other end. D, F & K are all new, and there is no slop in the ball on the lever...
It sounds like it's just the way it should be. I agree with you that the support bush would work against the geometries, I would not recommend it. /Anders
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1982 Talbot Matra Murena 2.2 prep 142 (under restoration) 2017 BMW i3 "Charged Professional" 94Ah 2024 VW id.buzz Pro
Used to own: 2001 Renault Matra Grand Espace "The Race" V6 24v 1997 Renault Matra Espace 2.0 8V 1987 Renault Matra Espace J11 2.2
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