hey still piecing together my os xz .28 for my hyper st rtr. well i got the clutch system on today and started to mount it to the hyper st's engine mount. its a really crapy mount. i say that beause the way the engine attaches to the mount is comicle. it has these two loose nuts that you have to line up just right in a slot to get it to attatch. anyway im going to by a new mount and i have a quesion. can i just buy the losi mount only engine mount for my xz, and have it work. or does it only work w/ the 8ight line of cars? or does anyone have any suggestions on a better engine mount than the macstars crappy engine mount? need to know this, clay unruh

read your thread bro and i'm having the same problem! hyper st pro,os xz 28.................trying to mount it in is a ****ing joke,ended up drilling holes in the chassis to try and get it to fit but ended up ****ing it up,hahahaha no surprise there hey. Anyhow got another chassis coming,would like to knowif you've solved this problem at all? surelytheres some sort of mounts that fit in nicelywithout having to modifytoo much? cheers bro

Yes, the Hyper ST Pro engine mount is junk.. I stripped out a screw in one and looked and looked for something new.. I found it annoying that like all the Hyper buggies and truggies had different mounts.. In the end I gave up and just got another stock one.. I think you can get a quick change mount for the 8.5 buggy - but I'm pretty sure you'll have to drill new holes in the chassis...

hey loveit:i wound using the stock engine mount.but what im really having trouble w/is starting the os.28 xz for the first time.i have the ofna blue truggy starter box,and ive already had to buy a new wire kit for it cause i over heated the wires trying to start the xz. i seem to get the best sounding turn over pre-heating the engine ,w/a heat gun ,to about 260 degrees. still wont start though. doesnt that seem kinda hot. im using a p-3 plug. i know the os engines are super tight though. are you using the needle settings given in the little os .28xz engine booklet.or have you found a better starting point for the needles.im getting really feed w/ my new truggy. wish i would've waited 2 months before i bought the hyper st cause i would have invested the money i used to buy the truck, engine, and starter box on a new 8ight-t 2.0 rtr for my first truggy. i was so upset i put the un-used truggy,w/the os .28 xz (never even started)and the ofna truggy starter box on ebay as a one buy deal. threw in the old mac star never been broke in but needs a new pull start, and paper work ,transmiter, glow iginter, and pro blue,black, purple and white body w/supporters for $700.00 and a reserve of $650.00 and didnt even get one bid. thats a...,oh i would guesstamate $1000.00 for that set up brand new like mine is. so all in all im not liking my idea for ofna hobao for my truggy. well good luck to a both of you guys let me know how that xz turns out for ya, clay unruh

The os 28 doesnt have a tight pinch. Ive had 3 of them and all have been easy to break using a crappy old thunder tiger box. They only take half a gal to break in and mine starts 1st go every time. Its the easiest mill ive broken in. The first 2 i didnt even pre heat to break in. The 3rd 1 i heated with a hair dryer and losened the plug. Easy as!
Lean out the high speed half a turn.