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Replacing gen2 instruments


rcsocket

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Replacing gen2 instruments with gen3

RC24 Gen2 instruments are now rare but lots of RC36 Gen3 are to be found.
Fitment is essentially plug and play apart from the following-
So here is what you need to do the swap.
Obtain from Gen3
instrument cluster, sprocket cover, clutch push rod, speedo drive, coupler and cable.
Gen3 speedo is driven from gearbox mainshaft not F/wheel as on Gen2
You need to space out the sprocket retaining bolt by 10mm (longer bolt)
Allowing for tyre size 140/80 vs 170/60 and sprockets 16/45 vs 16/43
the speedo will indicate 1.8% fast on the Gen2. If however the rear sprocket
on the Gen2 is changed to 44t speedo error will now be 0.4% slow.

 

The Gen3 tacho has different drive electronics to the Gen2 but the
electronic module on the back of the tachos are interchangeable
Remove the modual from the back of the Gen2 tacho and plug it into
the Gen3. The two meter wires need to be soldered.

Note- 3 connects to the Gen2 tacho so either swap harness or provide
brown/black feed. The middle connect hole needs to be drilled and the wires
Gen2 are in a different order to Gen3.


Replacing the illumination bulbs with Leds really brightens the display.
I used a strip of rubber cut from an old inner tube and attached with
double side sticky tape across the top of the instruments to mask
the back side from the screen.    

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23 hours ago, rcsocket said:

Replacing the illumination bulbs with Leds really brightens the display.

If you get a chance, would you post pictures of the cluster with LEDs? My gen3 could definitely use brighter instruments.

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Note that these probably have polarity; so if it appears not to function, fit 180 degrees round

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