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Model Forum / Radio Controlled / Land Models / February 2006revo revo revo
the only way my revo will shift into 2nd is if i disconnect the front drive shaft. any ideas on what the problem might be? > the only way my revo will shift into 2nd is if i disconnect the front > drive shaft. any ideas on what the problem might be? Turn the front wheels in the same direction at the same time with the driveshaft disconnected and see if there is ANY rolling resistance. If you have a blown bearing or pooched diff gears this will create rolling resistance and prevent the tranny from shifting as it slows the truck down. Doc there is no resistance in the front turning the wheels, do you think adjusting the tranny will help at all with the problem. > there is no resistance in the front turning the wheels, do you think > adjusting the tranny will help at all with the problem. That's the only thing I can think of as there is no other reason the tranny would only shift with 2WD if the front wheels are spinning freely. Try 1/4 turn OUT (counterclockwise) on the shift adjustment screw. If no change, try another 1/4 turn. This is, of course, assuming the engine is properly tuned. If not, before adjusting the tranny, try leaning out the HSN 1/8-1/4 turn. Your 2.5R should be running 260-280* if properly tuned. Doc > the only way my revo will shift into 2nd is if i disconnect the front > drive shaft. any ideas on what the problem might be? Sounds to me like it may be a tuning issue, and the extra drag of the 4wd isn't allowing it to get to high enough revs to hit 2nd. Try turning the high speed needle in a bit. Failing that, turn the shift adjustment screw out a quarter turn in the gearbox (I think that's right, out for an earlier shift, in for a later shift yea?)  SignatureDan |
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