nano__

Are there any cars either ARTR, RTR or as kits which are faster than the Schumacher Fusion or the Schumacher Menace GTR in regard to top speed, and not track performance?

I have the Schumacher Fusion and Schumacher Menace GTR but I don't find that these cars are that fast. I have spoken to others; my own cars and the cars owned by those I have spoken to seem to suffer from the problem that they don't have nearly enough power to reach the high RPMs in third gear.
The car will accelerate viciously fast up to its top speed, where it will run at medium high RPMs -- it will never *scream* like it will if you remove the second and third gear. If either car is driven with only first car it will reach so high RPMs I fear I break the engine if running it too much on WOT.

Do these engines actually produce anywhere near 2.1 HP? If so, is the air resistance really so great around 60 MPH that it holds back that little car? I'm sure it is possible, but the frontal area of the object is really small, so I find it unlikely. Why doesn't it go faster?

Foxy

Yes, it's lack of torque from the engine, nothing to do with HP. The engine does not have enough torque to resist the wind with the gearing as it is. Also, no, there not many engines that produce a genuine 2HP, if any.

As for fast cars. You said for speed and not track performance, but this is a strange way to look at it. The racing cars are built for stability, strength and light weight. Which is every thing you need to do speed runs. Get an Xray NT1, put an OS18tz in it, gear it to the moon, and you'll reach 80 quite comfortably. The same can be said for most cars, but you need to be able to retain some control at those speeds, and racing cars are the best for it, if you can afford them.

As a side note, the Kyosho Inferno GT is a good car for speed runs. Slap a crazy torque big block engine in there and gear it to the moon, again you'll be looking at 80plus with the right gearing.

nano__

Thats just too bad that Schumacher's cars (namely the Fusion and GTR) are severely underpowered.
I recently put the high speed gearing pinion on my GTR, I haven't had the chance to test this yet, but I assume the car will run even worse -- as the car will now hit third gear at an even lower RPM, where it most likely produces even less power. However, all other cars I have seen only feature a two-speed gearbox, GTR and Fusion have both a three-speed; doesn't the Fusion and GTR have the potential to reach very high top speeds given that they have a proper engine -- one that can pull the car through all gears up to near 40 000 RPM?

So perhaps instead of buying a two speed car and change the engine in it I might perhaps look into putting a proper really powerful engine in the GTR or Fusion?

Do you -- or anyone else here -- know what engine(s) I should consider putting in the Fusion/GTR?

ross_jsy

well no engine will hit 40,000 rpm with any form of resistance. in reality if you get 30,000 rpm out of it you are doing well.

good engine for out and out speed, well you want torque, and rpm. so go big block (.21 and above). i find my lrp .28 spec 3 revs very high for an engine of its size, good amount of torque and cheap. hook it up to a jp-3 pipe, and add the high speed gearing and it will be fast.

but if you find the menace or gtr slow you have your engine tuned wrong or something! they are very fast little cars

Neil E

Fo a fast car that you can control look at a Serpent 960 07 1/8 scale 4WD

nano__

I have the engine leaned out as much as possible just to the limit where it will get too little fuel and make these audible sounds as if the engine is cutting briefly -- I'm told that means the engine is too lean. So I have the engine just under that level, they are both quite responsive on the throttle and accelerate fast, they are certainly not running too rich. My GTR reaches around 100 degrees C at this level (with no holes in the body) and my Fusion around 130 (with a large hole in the front to allow air for the heatsink), maybe a little more. The Fusion can get too hot but the GTR will never get too hot. I broke the engines in together with the help of someone really experienced, he said I was too light on the throttle when I broke in the GTR (he said I never got the temperature high enough) -- could this seriously degrade the performance of it? I only followed the manual when I broke in both cars but learned from what he said about the GTR when I broke in the Fusion.
With the Fusion I think I managed the break-in rather good. However both my Fusion and GTR run at about the same top speed even so.

I have tried different types of fuel and settled on 25% nitro, 12% oil, castor free fuel which I feel give the best performance. I'm very certain that the throttle can open fully when I give full throttle, my fuel filter is almost new, my air filter is almost new, the fuel hose and hose going to the exhaust are not overly long and both are obviously properly connected. The gears mesh properly, the brake is not dragging while not in use, differentials are fine, there is no unwanted resistance or bad noises whatsoever. The engine also sounds very healthy and makes just about the right amount of smoke -- or so I'm told.
The bottom line for me is I can never see how neither of these cars could ever do 70 MPH, or even 60 MPH out of the box. Neither simply does not rev. Full throttle with new foam tires, two seconds -- "medium high" RPMs and third gear, and then the RPMs sadly never increase further.

Regarding a new engine, will any type of engine fit? Can I buy anything -- does all normal engines come with a universal set of mounting holes -- or do I need something specific? Is this mounting configuration called something in particular that I should look for?

I guess I should learn what the torque of my current engines are before I buy something new though so I don't end up with even worse performance. :-)

nano__

I looked at that car, but this is over 2.5 kg and with merely a two-speed gearbox? Does it have an extremely powerful engine?
The Fusion is supposedly 2.1 HP and 1.8 kg, with a three-speed gearbox. However I don't know how much torque the engine produces.