Me and my friends have been driving MP 7.5 Sports RTR for two summers and think it is time for a step up. We only drive on a slope grass lawn and never competes except with each other.

Should we buy three Matrix or three Hellfire? Since we are running on grass we have very good grip but sometimes to good, MP 7.5 often rolls over when turning too hard. Think we need powerful engines since grass is not as fast as dirt. A reliable engine is of course a must after being used to the engines in the Kyosho. . .

Please help us choose!

Matrix.. i am loving mine..Excellent Performance, Excellent radio, excellent duability, a lot of bling bling options.... and its $200 cheaper than hellfire...

Well consider this: The Hellfire hasn't even been released. Before even considering to buy it, you should wait till a good magazine, not RCCA, reviews it, and points out its' flaws, and weaknesses.
RC30GTR, the price of the Hellfire may drop more.

Magnil, the Hellfire is a truggy, and will fair better going through grass than the buggy. The truggies' larger tires allow it to go faster through the grass, compared to the buggy, so you will be going faster than the buggy with the helllfire, unless the engine is complete and utter crap, in which case the buggy will be faster. Consider this as well, the buggy has pull-start. The Hellfire has roto-start, which is a million times easier.

Before deciding, wait for the Hellfire to be reviewed.

Also, have you considered a Revo or LST instead of the Hellfire? The LST has an extremely reliable and powerful engine. Mine will flip over on grass from a standstill if I put it in low gear, and give full throttle. But this will only happen if you do it on purpose. If you break the engine in perfectly, you will be able to pop a wheelie from a standstill on asphault. I really love my LST. It comes with excellent electronics, XS3: synthesized FM computer radio, and two 85 oz-in of torque servos. This totals up to 170 oz-in of torque, and you can throw in two even more powerful servos for more steering power. I'm throwing in two servos with 200+ oz-in torque each, giving me at least 400 oz-in of torque for ultimate steering power.

Basically, what I am trying to is, is that there are other trucks that are more fit for grass driving, and that have already been tested.

I can see someone is extremely biased here. In other words, he's recommending NOT to get the Matrix.

I'm going to back rc30gtr up on this one.

Heck, a carson CNT might be up your alley. Here, we know it as the XTM mammoth ST

Hellfire....it's an HPI product....IF htere are any major issues w/ it you have the service of a larger company that stands behind their product.....I want to see the pro kit or whatever they'll call it......and what hopups will be available.....

well if its anywhere close as popular as the Savage, there will be about 5 more versions released in the next 3-5 years.

Thats just an assumption, but at HPI's rate, its not unrealistic.

yes it has, and for over a week at some lhs's. looked one over yesterday. nicely done but for the money would rather get the Jammin RTR.

Well then it's released, and extremely expensive.

I am not biased against HPI, considering that I own a Savage. I simply don't think you should buy a vehicle that hasn't been tested. It might have some major flaws, and you have to deal with them. Something no one wants to do.

consider hpi... hardly ANY flaws.

Thanks for all your answers!

Mayhem Maniac: I have not considered the Revo or LST since I do not think I want a monster truck. One problem with the MP 7.5 is that it often rolls over when turning on grass, think that a monster truck would do it even more than the MP7.5? The Hellfire seems to be wide and low which would be good.

We will not buy the cars until april because of the winter in Sweden, then we will perhaps have some more opinions on the Hellfire.

Magril, my buggy also flips on the grass, but with my LST, I just set the shocks so that the CVD's were parallel with the ground, and I rolled less on the grass than I did with my buggy.


The LST is wider than the hellfire, so it is less prone to rolling if you set the ride-height correctly

Hellfire all the way for me.

You can set your buggy up to handle really well on grass and not roll over. Half of our championship races are on grass tracks, so trust me I know.
Get some Medial Pro Turbo tyres or GRP Grip to start off with. Then use the stiffest springs and sway bars available for your buggy and fill the shocks up with some 450-600cp oil, with the rear about 100 thinner than the front.
You'll also want about 15'000cp oil in the front diff and 20'000cp in the middle diff. Ride height should be suspension arms level or a bit higher depending on the height of the grass and whether it slows the car down much.