megamaxx

is there any way to get rid of this o.d. and the truck still shift,it does not seem to be hitting 2nd now,i have set the module acording to the book ,and went inside the tranny and adjusted there but still no 2nd gear[]

adam032981

Get A Forward only Conversion to get rid of the opti drive

megamaxx

yea looks like what im gonna have to do,its my first truck with the o.d. and i hate it

DaveG55

The opti-drive has nothing to do with the shift point from first to second gear. The 1st/2nd shift point is strictly a function of transmission rpm. And by association, engine rpm. Proper engine tuning and transmission adjustment are the biggest factors in transmission shifting.
The opti-drive only controls the shifting between forward and reverse. It also has a battery level function and the newer versions have a failsafe function too.
You can just remove the opti-drive and it's wiring and the truck will run just fine BUT you'll have to be sure to come to a complete stop before shifting between forward and reverse. There is no need to go with a FOC unless, for some reason, you want to get rid of reverse.

megamaxx

i kind of like having reverse,its my only ruck left with it and ireally dont want to give it up,engines tuned fine ,plenty of r.p.m.,adjusted shift point in tranny it just dont want to get 2nd

DaveG55

If you're positive that the tuning is on and the engine runnig right then the tranny needs more adjustment.
http://www.traxxas.com/support/index...&cat=89&id=299

In any case, it's not the fault of the opti-drive that it's not shifting into second.

megamaxx

i will back the set sceew out just alittle further.got the revo used they may have cranked it way down so it would stay in first.i just dont want to back it out to far and cause myself to deal with a bigger problem

rawiswar

get rid of optidrive and get a throttle failsafe (you are can still keep reverse etc....)


run about half a tank to warm engine up (listen very closely to see if its shifting straight away) (it happended to me with a new t maxx once) if so just set the shift point later


that dont solve it lean the hsn till it wants to stutter at wot then turn hsn back richen 1/4 turn (or 1/8 for better performance and shorter engine life)

then see if it shifts into second

ok then if it is not shifting to soon and leaning hsn does not work adjust shift point earlier careful you dont over loosen it the screw could fall out

rawiswar

also is the screw getting tighter when you adjust shift point

tighter to turn (clockwise) shift later


looser to turn (anti clockwise) shift sooner

megamaxx

thank for the input,the opti drive is new to me,and i have a bad habit of just dismantling to see how they work,but the mrs. made me swaer not to do the revo that way(fathers day gift)

megamaxx

its looser for sure,like you said i just dont want it to fall out.ill loosen an1/8 more hopefully that will get it where i need it

rawiswar

you could hold the gear from turning (hold spur gear and truck still)

loosen the screw all the way out so you can pull it out with wrench but only 1-2mm so it stays in hole but you know it is fully loose


then screw it in like 3-4 turns then see if it shifts then

with it being that loose it sounds it will be shifting to soon to me (and it can be easy to miss the shift that soon)

that had me stumped on my truck for days lol

megamaxx

i have never had this much trouble finding the shif points on my t-maxxs,i guess i need to get it thru my thick head ,ITS NOT A T-MAXX,and the set up and shift points are going to different so i guess my old *****will need to learn to work the new stuff.who said an old dog cant learn new tricks....

megamaxx

finally got it,that screw was bottomed completely out