Rumor Sea Doo begin testing develope Rotary/Wankel marine engine for PWC
tarza...@yahoo.com
service guys talking about SD to test a rotary engine much like the
one found in Mazda RX7s... Anyone know anything about that??
I think its great if true. I had an RX 7 and the engines are great.
Reliable, fast, rev to the moon and are super duper smooth running. I
suppose they would get better fuel economy and lower polution? but I
dunno
Anyone verify this?
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Bill O'Neal
year ago. I think they dropped it. The latest rumors have SD bringing out a
modular type 4 stroke motor as early as next year. There will first be a DI
three seater with a modular triple with three 500 cc clyinders, three valves
per clyinder, producing around 130-140 hp, later to be followed by a DI
1500cc RX. The real good stuff, a supercharged 1500 cc model is rumored to
be in testing now.
I think most everyone will have a four stroke out within two years.
Bill O'Neal
WCM
tarza...@yahoo.com wrote in message
<3b57bdea...@goliath.newsfeeds.com>...
BOOMZILLA
of power/cc... the older ones like the rx-7's if you remember were quite
dirty, and required big honkin cat-cons to clean them up (think back- in
that center idiot light cluster, the exhaust-overheat light)..... i
think however the old shortcomings may have been re-engineered. i say
bring on all the new tech you can!
greg
tarza...@yahoo.com
tech having the R1 motor laying there and the expertise inhouse to
convert that baby for marine use. 5 valves per cylinder, kills the
competition in wieght savings ect. They just kicked the living shit
out Honda I think and I am certain Honda is reevaluating whether or
not they want to enter the market.
I dont know where Sea Doo is getting all her 4 stroke tech but a
1500cc motor sounds HEAVY.. 3 valves per cylinder?? hrm Ill take the 5
thank you. I just dont think SD has the proven motors on hand. If I
was SD I would work on a marine fuel injected rotary.. Something
amazingly smooth, quiet and the performance should be outstanding and
exceed these 4 strokers. I honestly cannot believe more automakers
didnt play with wankel/rotary motors. The people that have built home
aircraft with these enginers powering them rave about the reliability
and smooth power. My RX7 had 167,000 miles on it when I sold it. Still
running strong and never a problem with the engine.
Ok well here is for wishful thinking..But a rotary that revvs to 7200
rpm hooked directly to a jet pump sounds far better than any
recipricating motor could ever be... Talk about smooth!
On Fri, 20 Jul 2001 10:24:00 -0500, BOOMZILLA <bbin...@ev1.net>
wrote:
Discountequity
some reason you had to add two stroke oil to the fuel ans well as having motor
oil. It was a neat bike but didn't excell in anything.
Kelly Matchett
>I
>suppose they would get better fuel economy and lower polution?
My understanding is just the opposite on both counts is why they stay
sheltered, rather than in the main stream. That was years ago, and maybe
changed?
Kelly
George Jefferson
:>I
:>suppose they would get better fuel economy and lower polution?
:
:My understanding is just the opposite on both counts is why they stay
he probably meant compared to two cycle. The rotary should fall in
between two and four stroke tradional engines. But look, if it is just
slightly worse emissions than a four stroke the greenies will
continue to have something to gripe about, so it seems like a
dead end on that point.
Richard Giguere
tarza...@yahoo.com wrote:
> I look at it this way.. Yamaha had such a huge head start in 4 stroke
> tech having the R1 motor laying there and the expertise inhouse to
> convert that baby for marine use. 5 valves per cylinder, kills the
> competition in wieght savings ect. They just kicked the living shit
> out Honda I think and I am certain Honda is reevaluating whether or
> not they want to enter the market.
>
> I dont know where Sea Doo is getting all her 4 stroke tech but a
> 1500cc motor sounds HEAVY.. 3 valves per cylinder?? hrm Ill take the 5
> thank you. I just dont think SD has the proven motors on hand.
Bobardier's four stroke DS 650 beat Yamaha's four stroke 660 Raptor in the
Baja 1000 this year sea doo's four stroke technoligy will no doubt come from
BMW, or what ever that Austrian motor makers name is. The same people who make
rotax.
Ricky g
Carolina Watercraft Works, Inc.
or another whether it is the cleanest burning powerplant needing to
be electric, or the noise level...they will ALWAYS be bitching
and crying.
--
Laszlo Almasi
Carolina Watercraft Works, Inc.
2104 Langdon Road
Raleigh, NC 27604
loba...@mindspring.com
" George Jefferson " <gj...@one.net> wrote in message news:tlgqp74...@corp.supernews.com...
Rusty
performance good weight!! Same exact speed to only real difference was the
polution.
I think rotaries are the way to go for PWC. It's just gonna take more people
making them otherwise they will remain expensive. I checked with freedom and
the starting price was in the neighborhood of $10K
Oh well
-Rusty
'97 SD GSI
<tarza...@yahoo.com> wrote in message
news:3b57bdea...@goliath.newsfeeds.com...
SL(SeaLion)
posts.
Bill O'Neal
Horse pucky !
Yamaha is no further ahead of the industry than Honda in Marine 4 strokes.
Yamaha introduced a 225 hp 6 clyinder outboard just 3 weeks before Hopnda
released their 225 hp 6 clyindered outboard. Guess which one the testers
liked the best. I'll give you a clue. It starts with "H".
Honda used the vetec technology from their F1 cars, later proven in their
autos, and now in the outboards. Varible valve timing. Also, a rpm sensitive
plenuim system for low rpm operation. Smooth as silk and quiet too. Same
peak power and torque, but smoother getting there.
Sea Doo's parent company, Bombardier, owns Rotax. One of Europe's oldest and
biggest engine building companies. If you think that they don't have enough
experence building 4 strokes, think again. They are second in small engine
production volume behind Briggs and Stratton in numbers produced, but miles
ahead of B&S in technology. They also own the engine manufactoring plants
of OMC, since the buyout last year. SD 's new 1500 modular is said to be "
the lightest 4 stroke of it's size ever built" by an engineer friend of
mine, whom some of you know, that has done some work on this project for
Bombardier. He used terms like "extremely lightweight" and "very powerfull".
I wouldn't be putting all my eggs into one basket just yet. We'll see who
comes out with affordable and reliable four strokes that produce decent
power for watercraft. Over the next two years, I expect to see many
different versions. I don't expect to see SD or Honda losing out on
anything......
Bill O'Neal
WCM
tarza...@yahoo.com wrote in message
<3b585fa2...@goliath.newsfeeds.com>...
momar
very bad at all
Rusty <rusty...@NOSPAMsocal.rr.com> wrote in message
news:S5067.31121$ca.85...@typhoon.we.rr.com...
KatScotBoo
imagine trying to keep a Sea Doo 4 together. Not slamming, but when you have
to deal with the public, you start to think whichever line is going to give you
the least headache is the best...
Scott
Bill O'Neal
have done this year are Yamahas and Kawasakis. As they don't make up that
big of a share of the boats on the lakes around here, that number seems to
be disportionate.
I have yet to have to rebuild a SD DI model, and I see lots of them come
through for service and on the lakes. Those damn things are very reliable.
How many Bombardier Quads have you rebuilt ? They have 4 strokes in them.
Bill O'Neal
WCM
KatScotBoo wrote in message
<20010720214544...@ng-fs1.aol.com>...
Kelly Matchett
>Honda used the vetec technology from their F1 cars, later proven in their
>autos, and now in the outboards. Varible valve timing.
What do you know about the variable timing? This has always been a
design challenge I've kept in the back of my mind in many forms and am
curious about what form it uses in reality. And are you referring to
timing alone, or variable lift as well?
Hell, I only wished I had venues to apply some of my ideas. When I was a
kid, a fella I looked up to had an engine challenge in his head he was
stuck on using vanes in a rotary motion in place of pistons (ala radial)
but couldn't work out the linkage. Now that I worked it out, he's in
South America...
Kelly
Kelly Matchett
per hole bent? Cams, chains, gearing... Water plays hell on all of this.
BTW, who knows if the engines mentioned so far use any form of lower
needles or babit bearings on the rods? My last bike experience was about
20 years ago.
Kelly
KatScotBoo
wrong? If it is a true Rotax motor, thats great. But when you add water to
the equation, along with the "average" youbg to middle aged man, you end up
with blown motors. Not just Rotax motors, but all motors. My original post
wasn't a slam on Bombardierm it was more of a pat on the back for Yamaha. They
build the most reliable motors out there.
Scott
TTravelor
Tom
Beesley's Point SeaDoo
609-390-1113
Brad Coon
"KatScotBoo" <katsc...@aol.com> wrote in message
news:20010721121624...@ng-ms1.aol.com...
> No offence Bill, but the 650 Bombarideir quad has a BMW motor in it.
BMW used a Rotax motor in its 650 Dual Purpose bike , the same motor that is
used in the 650 DS Quad. BMW chose Rotax because they did not have a single
in their stable and they needed a motor that would continue their (BMW)
world-wide known reliability in motorcycle engines. The motor has proven to
be beyond bullet proof, winning many endurance races for BMW and the Baja
1000 for Bombardier. It is strictly a Rotax motor , not a BMW power plant.
Brad
craz...@localisp.com
and lifters for each cylinder. At a certain speed a locking pin
slides out, connecting the two lifters together, so the larger cam
lobe becomes the lobe that's used to actuate the exhaust valve.
On Sat, 21 Jul 2001 08:12:24 -0500, Kelly Matchett <fl...@wcnet.net>
wrote:
craz...@localisp.com
like Freedom-Motors is a head of their time in technology AND PRICE.
( :