Quad Rotor FD launch

[SiRhatchalot]

http://student.lssu.edu/~ujones/4rotorfd.mpg

pretty crazy...sounds like he only goes through 3 gears in the 1/4

[yellow00'Si]

:eek3: that was crazy fast

[TopSeller]

that car was so fast i started laughin

[_Zac]

Fuggen bad..

[Benny]

amazing! i love the way it sounds.. ahhh thats why im a rotary whore.. :roflmao:

[Solracer]

damn, wish the quality wasa better, cool vid....sounded like a bike lol.

[l33t]

holy crap haha i bet that bitch was crazy loud

[SloESLex]

holy schnike! :eek3:

[SpdRcr]

WOW :eek3: Supereek: :eek3:

[Z33WOLF]

Very nice but I wouldn't want to know the price on one of those motors. :)

[banginaccord]

what was his time?

[Rolls_06]

damn that thing sounds like an indy car :rofl:

[DrKilljoY]

two major types of 4 rotor engines...

#1. the 13J

It was based on the 13G 3 rotor engine, which in turn was based on the 13B (2 rotor engine) of the time, with some special parts:
*Special centre housing with phasing gear
*Eccentric shaft to suit the 4 rotor design (see diagram above).
*13J engine has 4 bearings (in the front housing, the first and third intermediate housings and the rear housing). Unlike the 2002 engine with only 3 bearings for the eccentric shaft (quite acceptable for a road car, but undesirable in a racing engine).
*Most other parts, while virtually identical to the 13B, were custom-made for this engine (The only common parts with 13G/13B were the rotors and rotor housings)

There were several revisions of the basic engine design, with minor improvements each time:

13J-M
(M = modified). 500bhp@8500rpm Peripheral port with fixed length intake trumpets, EFI, 2 plugs/rotor. Used in the 1988 LeMans 767 racer.

13J-MM
630bhp@9000rpm Peripheral port intake with variable length intake trumpets (2 steps only), EFI, 2 plugs/rotor. The 13J-MM has ceramic apex seals and the side housings were hot sprayed with a ceramic surface for wear&friction resistance. Used in the 1989 LeMans 767B racer.

13J-L
Much the same as the 13J-MM Used in the 1990 LeMans 767B racer

and of course the bad boy!

#2 the R26B

The R26B four rotor engine was developed for Mazda's racing program in 1990.
It was an all new design derived from the 13J engine (specifically the 13J-MM), but with few interchangeable parts.

The major differences from the 13J are:
* Three spark plugs per rotor-The additional one at the top is called a "late trailing".
* The variable length intake trumpets were multi-step in the 1990 R26B, continuously variable in the 1991 version (for maximum possible torque at any RPM).
* The rotor housings and side housings were hot-ceramic coated

The LeMan's specification engine produces 700bhp@9000rpm, 607Nm/448ftlb@6500rpm, and engine capacity is 654cc x 4 rotors=2616cc
The Mazda LeMans 787B racer powered by this engine won LeMans in 1991, the making both the first Japanese manufacturer and the first non-piston engine to win.

Acceleration of the 787B is impressive, as it weighs 800kg, giving it a power to weight ratio of 1.2kg/bhp (2.6lb/bhp).
As a comparison consider the following: Ferrari F40 2.6kg/bhp (5.7lb/bhp), Porsche 911 turbo 4.5kg/bhp (9.9lb/bhp)
This will allow a 0-100m (328ft) sprint in ~2.5 seconds, and a 1/4 mile with a terminal speed of 250km/h (155mph) - somewhere around 9 seconds!
(actually maybe about 10 or 11, as the car is not set up for drag racing)

Unfortunately the rotary was banned from European racing by FISA in 1992.

[DrKilljoY]

Very nice but I wouldn't want to know the price on one of those motors. :)

just for the engine hardware alone you are looking at somewhere between 8K to 10K. You either have to buy some VERY exclusive parts or have other parts machines to specifications.

Then add your car and engine management... suspension and everyhting else.

[Enforcer]

that is the most evil thing I've seen in a long time... seriously now, what was his time? :roll:

[DrKilljoY]

that is the most evil thing I've seen in a long time... seriously now, what was his time? :roll:

I timed it on my PC, it was only a 9-10 second run..but that doesnt sound like it was a balls out run either.

[LURKER]

Damn that was insane. I love 7's

[hondaboy65]

Dame thats sound exactly like my 9 second 787 4 rotor on Gran Tourismo 3 ....oh my that 7 was crazy fast!!!! :eek3: :ugh2:

[specR]

oh shit! :eek3:

[fd-7]

everyone witness rotary power!

[MugenBoy]

that car was moovin

[SpdRcr]

Too bad your car doesnt moove, huh?! LOL

[b18civic99]

damn! very nice :rock: :bowdown: