dark10304,
you did just fine on the track saturday!! you were ready for every heat that you were racing in. you completed more than one lap on every heat that you raced and it was your vehicle that failed, not you. your vehicle must be able to handle the roughness of track racing before you can become a better driver.
Seems when i take a hard crash or land from a jump hard the batteries in my reciever case jar loose, thus my buggy comes to a complete stop..
that's terrible, just a bad batt box, your hump pack will fix that. and i'll also point out that you have been lucky if your buggy just comes to a stop, if your throttle is opened and the receiver dies (batteries fall out) there is nothing to close the carb with which normally equals a "run away" sound like you experienced it once at least. get that bad batt box outta there quickly!!!
as far as the exhaust coupler coming loose. this is a common problem for any two piece pipe/manifold setup. flanging both the end of the pipe and manifold then securing with good zip ties WILL correct this problem. just bend the circle of the pipe out a bit to give a lip for the zip tie to grab onto.
hitec 645mg is a fine servo for your buggy. the batt pack you purchased is a 5cell hump pack. 1.2v per battery = 6v. 133oz at 6v is more than enough to control the storm on the dirt.
do you know what comes standard in the storm rtr?
the servo? jr Z590M (Torque: 85 oz/in at 6V) and with 4AA your @ 4.8v, so you will certainly see an increase in performance with the batt's and servo upgrade.
as darthracer said, most, if not all RTR's need elec upgrades. the Storm comes with a great radio though. also, swapping the servo and using the correct "H" spine from a new horn will solve your stripping spline issue as well.
to 100% that just does not sound right.... i know I'm doing something wrong!!
100% means the action on your radio will move the servo 100% of its ability. If you find, for example that your wheels are at the lock (turned all the way) before your steering wheel (radio) is turned all the way, decreasing the exponential will correct this. otherwise, in this instance, you would be putting added stress on the servo trying to crank it past the physical steering setup turning point. essentially, setting the exponential rate is telling the radio to turn the servo horn (this much) when you make an action, i.e. turn right. on the other side, if you were to set it to 50% and 100% was required, you could assume that your radio, with a full turn of the steering wheel, will only turn the wheels on the buggy 50% in the direction of your action.
no worries, you are already on the right path to fixing your issues, before posting on here.
good luck man
wiita