Twin_Zilla

The MGT 8.0 has was released to public furore about the sheer size of its engine.

I can only presume that the power output is around 2-3 as the GST 7.7 (a smaller engine, after all) puts out 5 exactly according to CEN themselves. So probably about 3.

**EDIT** - It's only 1.8hp in the MGT. That sucks.

What I am proposing (that probably couldn't be built) is to make a Truckzilla Big Twin (or TwinZilla ) with two GST 7.7 engines or two MGT 8.0 engines. Can you imagine the speed of that?

I would HAVE to have the Big Twin's 7.7" wheels, maybe bigger and made of all alloy to weight the bugger down, but just imagine:

This: http://www.novarcproducts.com/custrides/johnbigtwin.jpg
With two of these 5hp beasts: http://i266.photobucket.com/albums/i...bies/gst16.jpg

I don't know about you guys, but one of them with an electric blue Caddy shell would have to be my ultimate R/C car. 7HP+ in a 1/8th!!! Yes please

If there is anyone out there who is really, REALLY rich, please build that. And then mail it to me...

What, in everyone's opinions, would be the best engine to double up and put in there, money no object and just pretend that they'd fit if they are massive lol

Snaut Rocket

theyre noting close to 5hp.
THey just say that.
If any thing it would be a lot of torq.
If your wanting speed you could drop in to nova big blocks for my rpm and probably tune a lot easier than the mgt 8.0 engine.

Twin_Zilla

Hmm... damn the lack of 5hp.
Whats the output of these engines you speak of then?

Sugafree

By popular demand here's an entire list of all the engines tested on the X-Dyno. Please note that you are looking at peak numbers which is great for marketing, but does not tell the entire power characteristic of the engine.


Company Size (ci) Engine HP TQ Peak RPM Fuel %
Associated 0.280 MGT 4.6cc 1.10 @ 19,500 rpm 57.60 oz-in @ 17,750 rpm 34,250 rpm Byron 30%
Axe Motor Rossi R21 Cobra 1.32 @ 25.600 rpm 52.45 oz-in @ 25.200 rpm
Axial Racing 0.120 .12RR Spec 1 0.88 @ 30,900 rpm 28.48 oz-in @ 31,100 rpm 39,100 rpm Trinity Platinum 30%
Axial Racing 0.280 .28 Spec 1S 1.41 @ 23,400 rpm 61.85 oz-in @ 23,400 rpm 33,400 rpm Trinity Platinum 30%
Axial Racing 0.280 .28 Spec 1S 1.43 @ 22,800 rpm 75.61 oz-in @ 18,000 rpm 35,000 rpm 30% nitro, 12% oil
CEN 0.260 NX-26 1.02 @ 23,200 rpm 53.00 oz-in @ 18,000 rpm 33,200 rpm Racer's Edge Sure Fire 30%
CEN 0.460 X-76 .46 1.58 @ 21,250 rpm 74.88 oz-in @ 16,500 rpm 36,000 rpm Byron 30%
GS 0.247 GS-R25MT 1.20 @ 24,000 rpm 55.68 oz-in @ 17,000 rpm 35,500 rpm Orion Black Demon 30%
HPI 0.180 18 SS 0.63 @ 29,500 rpm 24.96 oz-in @ 22,250 rpm 32,500 rpm O'Donnell 20%
HPI 0.250 Nitro Star F4.1 0.94 @ 20,250 rpm 48.60 oz-in @ 18,000 rpm 33,500 rpm HPI 30%
HPI 0.280 K4.6HO 1.28 @ 19,500 rpm 64.76 oz-in @ 19,500 rpm 32,000 rpm HPI 30%
HPI 0.280 Nitro Star K4.6 1.32 @ 22,250 rpm 59.52 oz-in @ 19,750 rpm 35,000 rpm Byron 20%
HPI 1.400 Feulie 2-stroke N/A N/A N/A 2-stroke fuel 25:1
IRC 0.050 IRC/Toki N/A N/A N/A Trinity Nitro Power 20%
Kyosho 0.260 GSR-26 0.94 @ 31,500 rpm 46.08 oz-in @ 14,300 rpm 34,250 rpm Trinity Monster HP 30%
LRP 0.120 Z .12R Team Spec.2 1.11 @ 34,500 rpm 32.46 oz-in @ 34,250 rpm 41,250 rpm 30% nitro, 12% oil
LRP 0.28 Z Spec.3 1.87 @ 27,200 rpm 70.77 oz-in
Mach 0.150 .15 Rear Exhaust 0.65 @ 21,500 rpm 30.72 oz-in @ 11,000 rpm 29,500 rpm Orion Black Demon 16%
Max Power 0.120 .12 S-3MF 0.91 @ 34,750 rpm 28.80 oz-in @ 30,250 rpm 43,000 rpm Trinity Monster HP 30%
Max Power 0.210 Max .21 1.35 @ 24,500 rpm 55.68 oz-in @ 21,000 rpm 38,250 rpm Trinity Platinum 30%
Max Power 0.210 MX21M5 1.35 @ 24,500 rpm 55.68 oz-in @ 21,000 rpm 38,250 rpm O'Donnell 30%
Mugen 0.120 X12 SE 0.88 @ 21,500 rpm 28.80 oz-in @ 30,000 rpm 42,500 rpm 30% nitro, 10% oil
Mugen 0.120 X12 SE 0.88 @ 21,500 rpm 28.80 oz-in @ 30,000 rpm 42,500 rpm 30% nitro, 10% oil
Novarossi(Dist. By Fusion Motorsports) 0.210 N21B 1.33 @ 22,750 rpm 59.52 oz-in @ 20,750 rpm 35,750 rpm 30% nitro, 12% oil
Novarossi(Dist. By Fusion Motorsports) 0.210 N528XR Hott Mod 2.02 @ 26,250 rpm 80.64 oz-in @ 22,000 rpm 38,500 rpm 30% nitro, 12% oil
Novarossi(Dist. By Fusion Motorsports) 0.210 P5 1.46 @ 25,250 rpm 59.52 oz-in @ 22,000 rpm 37,750 rpm O'Donnell 30%
Novarossi(Dist. By Fusion Motorsports) 0.210 P5 1.46 @ 25,250 rpm 59.52 oz-in @ 22,000 rpm 37,750 rpm O'Donnell 30%
O.S. 0.120 .12TZ(S) T3 0.80 @ 34,000 rpm 24.96 oz-in @ 21,750 rpm 38,500 rpm 20% nitro, 12% oil
O.S. 0.120 12 TR 0.65 @ 30,000 rpm 25.00 oz-in @ 23,250 rpm 39,350 rpm White Lightning Pro 20%
O.S. 0.120 12 TR-T Outlaw 0.73 @ 31,500 rpm 25.96 oz-in @ 27,250 rpm 41,000 rpm 30% nitro, 10% oil
O.S. 0.180 .18 TZ-T 1.18 @ 29,400 rpm 44.16 oz-in @ 21,750 rpm 42,050 rpm 30% nitro, 12% oil
O.S. 0.210 VZ-B V-Spec 1.47 @ 24,250 rpm 61.20 oz-in @ 22,500 rpm 41,500 rpm Trinity Platinum 30%
O.S. 0.210 VZ-B V-Spec 1.47 @ 24,250 rpm 61.20 oz-in @ 22,500 rpm 41,500 rpm Trinity Platinum 30%
O.S. 0.300 30VG 1.80 @ 26,500 rpm 74.88 oz-in @ 18,750 rpm 35,500 rpm O'Donnell 30%
Ofna 0.210 Hyper 21 8-Port 0.98 @ 20,750 rpm 49.92 oz-in @ 14,750 rpm 33,000 rpm Sidewinder Pro Race 30%
Ofna 0.260 Force .26 1.02 @ 24,000 rpm 48.00 oz-in @ 19,500 rpm 38,500 rpm Byron 30%
Ofna/Picco 0.210 P7-R Evo .21 1.08 @ 24,800 rpm 58.93 oz-in @ 25,400 rpm 39,300 rpm Werks 30%
Ofna/Picco 0.210 P7-R Evo .21 1.08 @ 24,800 rpm 58.93 oz-in @ 25,400 rpm 39,300 rpm Werks 30%
Ofna/Picco 0.210 P7-R Evo .21 1.47 @ 25,200 rpm 59.01 oz-in @ 24,800 rpm 39,400 rpm 30% nitro, 10% oil
OPS 0.210 .21 Speedster 1.64 @ 27,000 rom 62.06 oz-in @ 26,200 rpm 41,800 rpm 30% nitro, 12% oil
OPS 0.210 .21 Speedster 1.27 @ 27,000 rom 57.53 oz-in @ 19,200 rpm 39,800 rpm Werks 30%
Peak 0.120 Diablo .12 Type-R 0.51 @ 25,550 rpm 21.10 oz-in @ 19,000 rpm 33,000 rpm Trinity Platinum 20%
Peak 0.280 Diablo .28 1.33 @ 27,500 rpm 48.00 oz-in @ 22,000 rpm 40,800 rpm 30% nitro, 12% oil
Racers Edge 0.320 Sure Fire .32 1.65 @ 21,750 rpm 74.80 oz-in @ 21,000 rpm 34,500 rpm 30% nitro, 10% oil
RB Concepts 0.120 V12 Rody 3T 0.95 @ 34,250 rpm 28.80 oz-in @ 28,750 rpm 44,750 rpm 30% nitro, 10% oil
Rex 0.120 R12S5 Outlaw 0.84 @ 34,750 rpm 26.88 oz-in @ 26,750 rpm 41,250 rpm 30% nitro, 10% oil
Rex 0.120 ReR5 5-port turbo 0.84 @ 34,750 rpm 27.00 oz-in @ 26,750 rpm 41,250 rpm O'Donnell 30%
SH 0.210 PT2002XB .21 1.21 @ 22,100 rpm 55.68 oz-in @ 19,750 rpm 39,000 rpm 30% nitro, 12% oil
SH 0.280 0.28 1.22 @ 20,500 rpm 61.40 oz-in @ 14,750 rpm 38,450 rpm Trinity Monster HP 30%
Sirio 0.120 S12T3 EvoIII 0.79 @ 35,050 rpm 23.04 oz-in @ 22,000 rpm 40,750 rpm 30% nitro, 10% oil
Sirio 0.210 P21 PR Pro 1.46 @ 27,750 RPM 53.76 oz-in @ 26,250 RPM 41,000 rpm Trinity Platinum 30%
Sportwerks 0.260 0.26 1.30 @ 26,750 rpm 53.76 oz-in @ 19,000 rpm 42,750 rpm Sportwerks 30%
STS D30M 1.6 hp @ 25,000 67.99 oz-in @ 21,750 rpm on Trinity 30%
Super Tiger 0.270 G-27CX 0.86 @ 17,250 rpm 50.70 oz-in @ 16,250 rpm 30,250 rpm Trinity Platinum 30%
Tamiya 0.150 FR-15S 0.48 @ 30,250 rpm 21.12 oz-in @ 13,000 rpm 36,500 rpm White Lightning 20%
Team Losi 0.270 Mach 427 1.31 @ 26,750 rpm 53.80 oz-in @18,750 rpm 43,250 rpm Trinity Monster HP 30%
Team Orion 0.120 CRF Wasp .12 1.17 @ 36,800 rpm 32.12 oz-in @ 36,800 rpm 46,000 rpm 30% nitro, 12% oil
Thunder Tiger 0.210 Pro .21 0.92 @ 21,750 rpm 57.60 oz-in @ 16,750 rpm 37,750 rpm Trinity Monster HP 20%
Thunder Tiger 0.280 Pro 28 BXR 1.10 @ 19,500 rpm 57.60 oz-in @ 17,750 rpm 34,250 rpm O'Donnell 30%
Thunder Tiger 0.282 Pro .28 0.96 @ 23,200 rpm 51.22 oz-in @ 14,400 rpm 33,400 rpm Trinity Platinum 30%
Top 0.120 TS12S3 0.77 @ 31,000 rpm 26.88 oz-in @ 20,250 rpm 41,750 rpm 30% nitro, 10% oil
Traxxas 0.150 TRX 2.5 Rear Exhaust 0.69 @ 29,750 rpm 30.72 oz-in @ 18,750 rpm 38,500 rpm Traxxas 33% Top Fuel
Traxxas 0.200 TRX 3.3 Pullstart 0.97 @ 31,250 rpm 37.49 oz-in @ 19,500 rpm 37,750 rpm O'Donnell 30%
Traxxas 0.200 TRX 3.3 Pullstart 1.06 @ 30,900 rpm 38.32 oz-in @ 22,700 rpm 38,100 rpm Traxxas 33% Top Fuel
Trinity 0.210 Adam Drake Platinum .21 1.48 @ 25,400 rpm 57.72 oz-in @ 25,400 rpm 41,000 rpm 30% nitro, 12% oil
Trinity 0.260 427 Monster Horsepower 1.02 @ 24,250 rpm 48.00 oz-in @ 19,250 rpm 38,100 rpm Monster HP 20%
Trinity 0.300 .30 Adam Drake 1.44 @ 21,750 rpm 55.68 oz-in @ 27,000 rpm 36,250 rpm 30% nitro, 12% oil
Trinity Drake/Platinum 2.00 @ 26,400 rpm 76,89 @ 26,000 rpm
Werks Racing 0.210 Collari B7 1.54 @ 26,000 rpm 59.52 oz-in @ 23,750 rpm 36,650 rpm O'Donnell 30%
Xray 0.049 NT18 N/A N/A N/A Trinity Nitro Power 20%
XTM 0.247 XTM 24.7 1.27 @ 23,000 rpm 61.44 oz-in @ 16,750 rpm 37,250 rpm Orion Black Demon 30%

Twin_Zilla

Wowza.
I was expecting at least one of them to have over 2.
I (in all my naivety) was kinda hoping for 3.5 for the most powerful one...

Twin_Zilla

Or we could just put one of these in...

http://www.novarossiusa.com/product_...roducts_id=692

Might need a bit of modding though...

bzinfinity

I can wholeheartedly assure you that 1.8hp is not indicative of how much oomph the 8.0 motor has.

binaryterror

HP means nothing, to get top speed you also need an engine or gearing option that produces RPM.

Twin engines are so over-rated and more of a showcase never run thing.

Twin_Zilla

Well, still looks sick and goes like crazy, there are many video's on Youtube showing Truckzilla Big Twins going at 70+ mph.
So there.

binaryterror

Post on video proving it going over 70mph with a radar gun...go ahead prove me wrong.

Roscco

The Nova 528XR (Hotmodded) show 2.02, but then again it also shows it as a .21, it's a .28 is it not ???

Twin_Zilla

http://uk.youtube.com/watch?v=QgALP095AQI

Feel free to watch and enjoy binary

Evader ---> MGT

IDK, that doesn't look 70mph to me. Km/h maybe. I just don't see that as 70, but maybe it's because I'm used to seeing Rustlers do 70-80 and they're so small.

ThunderbirdJunkie

My Feedback: (3)

That thing MIGHT be going as fast as ThunderbirdJunkie's OS 12TR powered AD2...which MIGHT do 30...

supertib

that does not look like 70 MPH to me... without being there it is hard to say,

here is my 50 MPH MBX5T
http://www.youtube.com/watch?v=0Yys0sU6c80

And heres some 74 MPH Jato runs, and a few 70 MPH DM-1 runs....judging by the videos the twin engine truck is nowhere near the speed of these machines

http://www.youtube.com/watch?v=mz-r3...eature=channel

seriously look at how fast 70 mph looks and sounds, that twin does not look anywhere near that fast ( But i may be wrong, you be the judge)

Lilredmachine

Forget the nitros.

Drop two NEU 1521s and twin MMM escs driving a single spur into a Savage XL with twin 6s lipos strapped on. With creative gearing you'd be looking at an easy 90 - 100mph... And that'd be low because the tires would be spinning.

Really don't think that twin is doing 70. Not in a million years.

As far as I recall this specially built speed run twin only managed 69 mph.

Er, hp is a combination of torque and RPM, so it actually means quite a bit. I think you meant to say PEAK power means nothing. But as said it is what you do with the power and how it is delivered and produced that matters. Truth is most, if not all of the nitro motors presently around lack the rev range and torque to compete with brushless motors, they can just be hooked up to more and more packs whenever more power is required. An electric speed run car can weigh as little as 4lbs but pack anything up to a true 7hp @ 70,000 rpm +, at which point traction and keeping the car down on the ground is far more of an issue.

I guess what I'm getting at is just maybe you should give up arguing over the power and what motor is .3 of a horsepower pokier than another and just enjoy the sound.

Twin_Zilla

I know that you can go faster with electirc, but...
There is no noise, no smoke, no drama.
I like the speed and the power, but the experience is lacking, thats how I see it. Only myopinion, don't flame me. And however it "looks", the speed gun says 70mph, so...

ThunderbirdJunkie

My Feedback: (3)

It just says 70, it does not say 70MPH. You cannot see MPH.

ThunderbirdJunkie's Savage is faster.

binaryterror

No it says 70 and you can not read the MPH section at all. It could easily be KPH, which is more realistic in this case.

Take a look at the same guys GTP going 83/81 it's way faster, sounds faster going by you can tell the MPH is next to the 83mph.

Lilredmachine

Yeah the sound of a big trucks tires is extremely loud at 70mph.

Check this vid of a big electric truck running 80, you can hear the difference. And this clearly is 80mph. Even though the speed is difficult to see there are another few videos of it running 70+ and blowing phaltline tires up.

http://uk.youtube.com/watch?v=ERY9_TLF86M

SAVAGEJIM

You are right to an extent. Most who have built a twin engine machine wound up turning those into shelf queens with all the useless bling stuff they add onto them. But you can build a purpose-minder twin engine RC, just keep all the useless bling off of it and put on practical parts.

Additionally, I find that a twin engine truck I built was really best for straight-line on-road runs. In off road, the increased weight and teh X-Y moment of inertia of teh RC was greatly compromised, thus not allowing it to be as nimble like a track racer.

This is so correct. It is the torque at high RPM and the highest possible gear ratio that you can get that gets the top speed. HP can only give you a clue as to if teh engine will have teh torque at high RPM (given the HP at the RPM you are shooting for). But peak HP is absolutely useless unless that peak HP is at the high RPM bandwidth you need and teh major factor of teh HP at that RPM is a massive amount of torque.

Twin_Zilla

1) I realise now that I was probably wrong, but still fast, yes?
2) A twin engine converted monster truck went 85.55mph on "The Gadget Show" on Channel Five on Monday, the 15.12.2008.
3) SAVAGEJIM, "teh" is spelt "the"
4) "Team Pork Chop" makes me laugh.
5) If I ever did find the funds to make a twin engined truck, whether you guys like them or not, what engine would be your guys best bet? Because the standard "Powerworks" .26's seem pretty pokey, but...