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dazzer
November 23, 2017, 5:49pm Report to Moderator


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Just a heads up for the Logic overdrive kits which I've just fitted to the 2000 rally car... after a bit of faffing with some not fit for purpose parts.

Once fitted its great. I have overdrive on second, third and fourth. As you select overdrive which is now one click on the momentary stick it engages as it did previously but when you change up or down it automatically disengages until you dip the switch again. So perfect if you accidentally leave the overdrive engaged and also for quick up changes. Engage second overdrive go for third you get third without flicking out, you can then dip into third overdrive and change up to actual fourth before engaging fourth overdrive.

The unit itself which I got from Revington is easy to set up and locate. You have to use a Relay with the unit so if you're already set up for an A type box just a few wires to move about. I'm J type but had left the original relay in place so straightforward.

The rubbish parts are the momentary switches with a long stalk if you are retaining the column switch like myself. A number are available from various sources. I've tried them all they are all absolute **@&. Flimsy and disintegrate, or just don't work. (I tried five!) I made my own from a GT6 column switch in the end and a short 25A lucas momentary switch. Works perfectly with a bit of dismantling and grinding and a bit of ingenuity.

Also my 50 year 6RA relay was starting to stick and beyond refurb so I made the mistake of trying a modern equivalent Lucas 6RA... big mistake. First didn't work, second worked for an hour. I therefore used a modern 30amp 12v relay I had lying around and that works beautifully.

So great system, once you sort the gremlin ancillary parts.

Dazzer


1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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Hogie
November 23, 2017, 7:51pm Report to Moderator
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Hi Dazzer,
                the proprietary momentary switch is quite expensive.
I made a press button switch - not sure what the Revington one switches but mine allows a pulse of +12v into the circuit.
The press button is on the end of a stalk located in the switch position.

When driving one just needs to flick a finger rather than move a whole hand.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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dazzer
November 23, 2017, 8:58pm Report to Moderator


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Hi Roger

Sounds good.

Yes it was the expensive proprietary momentary switches that all failed.

At least we've both found a successful solution.

Great system.

Cheers Dazzer


1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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Gt6s
November 24, 2017, 11:06am Report to Moderator


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I made one for my old Sixfire. done with two relays.

Laurence


I remember being wrong once before Laurence Cochrane Newtownards Northern Ireland. 1972 Gt6 2600EFI The Mutt. Some original parts fitted, Not many ! Early PI motor overbored to 2.6. Lightened & balanced, ported chambered, cam'd 6-3-1 manifold. Running on DTA engine management system incorperating the PI throttle bodies fitted with electronic injectors and throttle position sensor. 0-60 4.7s & 7000rpm. Seriously annoys owners of modern stuff ! (particularly coz its a heap) 2500 S box with competition 28% od. 3.63 diff with a quaife in it, innit ! Rotoflex based rear but with a swing spring fitted & sliding shafts.(swing spring rotoflex without rotoflex's). Koni's front Spax rear. Hydraulic handbrake. Citroen xantia discs 11,1/4 in dia under Morris Garages 15 in Maestro alloys.
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Hogie
November 24, 2017, 12:19pm Report to Moderator
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Hi Laurence,
                         2 relays appears to be the popular method. That's what Revington use.
I use two relays and a few other components just to make it more complicated.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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dazzer
November 24, 2017, 2:01pm Report to Moderator


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Hi Laurence

What did you use for a momentary switch? Was it another home made model. The ones I tried came from reputable sources and a couple of switch and kit car specialists. All very fragile.  My home made one is bullet proof but requires a couple of donor switches.

Cheers
Darren


1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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Gt6s
November 24, 2017, 2:03pm Report to Moderator


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Indeed Roger I had two warning lamps one (ready to drop out) the other (stay in on change) I did intend to wire in a clutch pedal switch to it as well but I never got round to that.

Darren I used the two relays wired to self latch the OD switches provided the switching as they disconnect on change through neutral (Saloon box)

Laurence


I remember being wrong once before Laurence Cochrane Newtownards Northern Ireland. 1972 Gt6 2600EFI The Mutt. Some original parts fitted, Not many ! Early PI motor overbored to 2.6. Lightened & balanced, ported chambered, cam'd 6-3-1 manifold. Running on DTA engine management system incorperating the PI throttle bodies fitted with electronic injectors and throttle position sensor. 0-60 4.7s & 7000rpm. Seriously annoys owners of modern stuff ! (particularly coz its a heap) 2500 S box with competition 28% od. 3.63 diff with a quaife in it, innit ! Rotoflex based rear but with a swing spring fitted & sliding shafts.(swing spring rotoflex without rotoflex's). Koni's front Spax rear. Hydraulic handbrake. Citroen xantia discs 11,1/4 in dia under Morris Garages 15 in Maestro alloys.
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Gt6s
November 24, 2017, 2:12pm Report to Moderator


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Actually thinking about it I have the feeling I only used one relay on it wired to self latch.

Long time ago I did it.

Laurence


I remember being wrong once before Laurence Cochrane Newtownards Northern Ireland. 1972 Gt6 2600EFI The Mutt. Some original parts fitted, Not many ! Early PI motor overbored to 2.6. Lightened & balanced, ported chambered, cam'd 6-3-1 manifold. Running on DTA engine management system incorperating the PI throttle bodies fitted with electronic injectors and throttle position sensor. 0-60 4.7s & 7000rpm. Seriously annoys owners of modern stuff ! (particularly coz its a heap) 2500 S box with competition 28% od. 3.63 diff with a quaife in it, innit ! Rotoflex based rear but with a swing spring fitted & sliding shafts.(swing spring rotoflex without rotoflex's). Koni's front Spax rear. Hydraulic handbrake. Citroen xantia discs 11,1/4 in dia under Morris Garages 15 in Maestro alloys.
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iggy
November 24, 2017, 7:37pm Report to Moderator
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Hi dazzer im very interested in this ive already got a logic overdrive box fitted to the A type gearbox in my mk2 2500 it works as it should but only in third or fourth gear bought it from ebay, does the revington tr kit work in second gear as wired to the instructions you get with it? is this the corrrect part no RTR1001k thanks


1972 Mk2 2.5 PI on carbs
2005 Fiat Stilo jtd                                              
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dazzer
November 25, 2017, 3:06am Report to Moderator


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Hi Iggy

The 2nd gear operation is another inhibitor switch fitted  on top of the gearbox which when fitted and wired in line with the 3rd/4th inhibitor will work with the logic/overdrive with no extra wiring required. The inhibitor might already be there but not wired up? Cheers Darren


1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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thescrapman
November 25, 2017, 9:19am Report to Moderator

Colin Wake
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Iggy

The J-type saloon boxes have the additional inhibitor hole already in place, usually with a brass nut in the hole.

Don't remember seeing it on the earlier saloon boxes.

May need to get the appropriate selector shaft with the indent if it isn't present and then tap the hole and fit a switch


Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border.

2010, 2011, 2013, 2015 and 2016 CT Navigators Championship winner.

10CR 2005, 2007, 2009, 2011 2013 - RBRR 1990, 2006, 2008, 2010, 2012, 2014, 2016 - Nachtrit 2006, 2007, 2008, 2009, 2012 - Chinese rally 2007, 2008, 2009, 2010, 2011 - HCR 2009, 2011, 2012, 2013 (3rd place), 2014. 2015, 2017

On the road.
1968 Spitfire Mk3 : 1973 TR6 : 1967 Herald 1200 Estate 1970 : 1968 Mk1 2.5PI 1968
Off the road
1967 Moss Monaco (Mk1 GT6 based) : 1970 Spitfire Mk4 : 1970 Mk2 2000 auto  : 1964 Mk1 2000  : Mk2 2.5PI
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iggy
November 25, 2017, 10:33am Report to Moderator
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ok i some how thought the revington tr kit did away with the need for the extra inhibitor switch, thanks for letting me no


1972 Mk2 2.5 PI on carbs
2005 Fiat Stilo jtd                                              
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iggy
November 25, 2017, 1:01pm Report to Moderator
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I remember now my earlier mk2 had overdrive in all gears including reverse,but had no inhibitor switch fitted for second gear  obviously no good in reverse, but isnt there a way to wire in overdrive for second gear with out the extra inhibitor switch?


1972 Mk2 2.5 PI on carbs
2005 Fiat Stilo jtd                                              
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Hogie
November 25, 2017, 1:28pm Report to Moderator
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Hi Iggy,
                if you want OD in ALL gears then simply wire without the inhibit switches.  
However you stand every chance of destroying your OD box in quick order.  The inhibit switches are there for a purpose.

Second gear OD may actually be a higher gear than straight 3rd - so if you go 2 OD to 3rd the engine will 'race' sort of.

Maybe the saloon gears are different to the early TR ratio's

The Revington logic box will operate all gears that have the inhibit switch fitted.

I found that all standard Momentary ON toggle type switches had quite a soft action (weak spring). With an extended lever it became almost floppy.
That is why I went over to the press button style.
This is a modified toggle switch that only uses the threaded end with the toggle pivot - the contact area is removed.

However with a press button you do need a warning light to tell you where you are - In or out of OD.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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iggy
November 25, 2017, 3:01pm Report to Moderator
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hogie the A type overdrive on my earlier triumph was wired by the previous owner,  in this case overdrive in second wasnt higher than straight third, i was thinking is there a way to get overdrive in the forward gears but not in reverse without the extra inhibitor switch?


1972 Mk2 2.5 PI on carbs
2005 Fiat Stilo jtd                                              
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