RE: Official HPI MT2 Thread
This is one of my posts on another thread.
OK, as many know my MT started out as a MT1 Racer, which was a kit that did not come with a radio or engine. I up dated it to a MT 1 ¾ which in involve changing just about everything to MT 2SS other then the chassis, upper deck and the radio tray. The only alloy I have at this time that was not stock is the steering knuckles. I all so put in the 100cc fuel tank that HPI said would not work. Took a little modifying but nothing major.
For years I ran it with an OS 15 CV-RX, which has been discontinued, and the 18 CV-R took its place. I bought an OS 18 TZ and had it for over a year when the one way bearing went out on my 15 CV-RX so instead of buying a $26bearing I put the TZ in. Had no big problems while breaking it in other then keeping the front end on the ground. I was running a 14 CB with a 51 Spur at the time of break in.
First thing I did was gear up to tame the wheelies and right now I am running a 15CB with a 47 spur and still the tires balloon in about 5 feet. I still can wheelie if I hit the throttle just right. Being a racer for the most part I try to keep the wheels on the ground but being I do not race the MT any more I might change the gearing some to a lower gear for easier wheelies.
I was running the purple clamp on hex and after break in I was stripping the hex in the wheel as well as the hex it’s self after any where between 1 and 1 ½ tanks of fuel. I replaced all the hexes and wheels thinking they had some wear do to being old but still stripped them. So I got another set of wheels and the metal hexes that do not clamp on and epoxy (JB Weld) them in to the wheels.
Keep in mind when I change it to a MT 1 ¾ I up graded to all the SS heavy-duty drive train. While I was having the wheel hex problem I all so striped the heavy-duty final gears (ring and pinion). Replaced the gears and made sure I shimmed them properly and about half a tank of fuel stripped them again all ways in the back. Thanks to a MT owner on these forums he told me to try an alloy diff housing to cut down on flex. So I replaced the rear diff housing with an alloy one. Other then the alloy knuckles the rear diff housing is the only other alloy I have added that did not come stock.
Years ago I when through the alloy craze and found out about all the negative of using it. If people like it run it but it ended up costing me much money on more then one vehicle.
I have only had time to run it once since I did all this but got to run about 4 tanks through it with out messing up any of the drive train. Now is it bullet proof not sure but have run it more after these changes then before the changes. Being I race my buggy 3 out of 4 weekends I have not had time to do more testing.