Notices
General Automotive Discuss all things automotive here other than the RX-8

It's coming back!!!!!!!! (more next rotary 'news')

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 02-27-2014, 01:06 PM
  #126  
Registered
iTrader: (1)
 
MikeTyson8MyKids's Avatar
 
Join Date: Jun 2006
Location: Columbus, IN
Posts: 467
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by alnielsen
In that video, the FD driver was missing his apexes. I don't think, from that short vid, that he was as capable a driver as the driver of the RX8.
Exactly.
Old 02-27-2014, 02:13 PM
  #127  
Yank My Wankel
iTrader: (4)
 
Carbon8's Avatar
 
Join Date: Nov 2009
Location: Buffalo, NY
Posts: 2,207
Likes: 0
Received 6 Likes on 6 Posts
Old 02-27-2014, 05:36 PM
  #128  
Registered
 
OtherSyde's Avatar
 
Join Date: Sep 2013
Location: San Diego, CA
Posts: 294
Received 22 Likes on 20 Posts
OK guys, sorry if someone already posted these recent links and I missed them - I looked back a few pages and just saw a bunch of angry dudes arguing over RX7 Vs. RX8 and trying to personally define what a "sports car" is supposed to be, and I saw one link saying the RX7 will be back in 2017. This article is from just 2 weeks ago as of right now (Article written on Feb 14) and I didn't see it previously mentioned, I thought it might be relevant since they're basically now saying that the new RX7 will be here in 2016, or even as early as 2015 (doubt it, but we can all hope right?).

Mazda RX-7 coming in 2015 or 2016 with a new rotary engine

And a similar one on the same date here:

New Mazda RX-7 Could Get 250-Horsepower Rotary Engine



Something else encouraging that I actually just noticed - in this article: Mazda RX-7 to return in 2016: The iconic Mazda two-seat coupé is set to be reborn in 2016, powered by a 250bhp rotary engine - - They specifically said 250 "BHP," not 250 at the flywheel. Now THAT would be awesome.

And suddenly, a shimmering ray of hope shined down upon the formerly-disheartened rotary community!


[Again, sorry if someone already posted these and I just didn't see them]
.
.

Last edited by OtherSyde; 02-27-2014 at 05:38 PM.
Old 02-27-2014, 05:39 PM
  #129  
Registered
iTrader: (2)
 
RIWWP's Avatar
 
Join Date: Oct 2007
Location: Pacific Northwest
Posts: 16,684
Likes: 0
Received 239 Likes on 109 Posts
A) BHP is measured at the flywheel, so "250bhp" means the same thing as "250 at the flywheel". There is a term for measuring at the crank rather than the flywheel, which isn't BHP, but I forget off the top of my head. I expect you are getting excited over an assumption that BHP means "at the wheels", which it does not.

B) Any article that starts with "According to this other source..." isn't actually providing anything new. Lots of articles with their own theories, and they are using the same flawed article from Autoweek as the basis. That doesn't make it true.
Old 02-27-2014, 05:49 PM
  #130  
Registered
iTrader: (2)
 
RIWWP's Avatar
 
Join Date: Oct 2007
Location: Pacific Northwest
Posts: 16,684
Likes: 0
Received 239 Likes on 109 Posts
For example...from: Mazda RX-7 coming in 2015 or 2016 with a new rotary engine - report

Rumors about a Mazda RX-8 successor have been swirling for years
This is the only true statement in the article.

but new details are starting to emerge about the often talked about, never seen model.
No, details are NOT emerging, just more rumors and theories. For example:

According to Autoweek
...this is obviously not their new information.

Mazda is working on a new RX-7 which could use a naturally-aspirated rotary engine with two or three rotors.
So they don't know if the engine has 2 or 3 rotors, but yet they know that
The engine is expected to have a displacement of roughly 1.2 liters
Wait, so they don't know if it's two 600cc rotors vs three 400cc rotors? Really? Isn't that kinda major? Making a huge assumption here.

and an output of approximately 250 bhp (186 kW).
Based on...what? There is nothing to back up this claim. I think it's likely personally, but there is nothing supporting this statement.


It should also be more reliable and fuel-efficient that the oil and gas guzzling engine that was used in the RX-8.
It may be more fuel efficient, but I hope it's not more oil efficient. That would spell doom for the engine's reliability, which is rather counter productive. Shows that they don't really know anything about the engine

Given the MX-5 is expected to tip the scales at anywhere from 2,200 to 2,400 pounds (998 to 1088 kg), the RX-7 is expected to weigh about 2,800 pounds (1,270 kg).
Wait wait wait. So they expect it to have the same weight as the RX-8? (which started at 2,850lbs for the base trim) A zero weight reduction for losing a pair of doors and shrinking by 18 some inches in length? When Mazda cut 200lbs off their 3 and is cutting 200-400lbs off their MX-5? It's a rather absurd claim when you think about it.

If everything works out, the RX-7 could be launched in 2015 or 2016 and cost around $30,000.
So this car that Mazda hasn't finalized the engine OR chassis on has to be completed WITH lots of QA testing, the factories set up for tooling, copies of the car sent to every 1st world government for crash testing and emissions testing, the entire supply chain for parts has to be built and supplied, and it still has to be shown at the Tokyo Auto Show, which usually happens 1-2 years ahead of time... and this all has to happen in the next 10 months?

Is that REALLY believable?


Not to me.
Old 02-27-2014, 08:28 PM
  #131  
40th anniversary Edition
 
gwilliams6's Avatar
 
Join Date: May 2008
Location: Grapevine, Texas
Posts: 2,925
Received 133 Likes on 114 Posts
These videos of stock RX8s passing stock FD RX7s are meaningless unless the drivers have the exact same skills and swap cars so we can compare their times with them driving each car under the same track conditions. This argument will never be settled unless you produce THOSE videos folks. Anything else is just unproven. But I guess folks here have to have something to discuss and disagree about or the forum gets boring. lol

My experience with owning and driving both cars is different from what you show in this video. I loved my FD and I love my present RX8, but yes I wish I still had that FD in my garage to keep.
Old 02-28-2014, 03:37 PM
  #132  
Registered
 
OtherSyde's Avatar
 
Join Date: Sep 2013
Location: San Diego, CA
Posts: 294
Received 22 Likes on 20 Posts
I was just trying to be optimistic.

Also, what is Brake Horsepower? Someone told me (apparently incorrectly) that it was at the wheels. Is Crank Horsepower CHP? and Flywheel Horsepower FHP or FWHP? Or is that Front-Wheel Horsepower? Or does that even exist? I thought RWHP was Rear-Wheel Horespower..? Now I'm just really confused... O.o
Old 02-28-2014, 03:50 PM
  #133  
Registered
iTrader: (2)
 
RIWWP's Avatar
 
Join Date: Oct 2007
Location: Pacific Northwest
Posts: 16,684
Likes: 0
Received 239 Likes on 109 Posts
No problem with being optimistic, just don't let it blind you to stuff that clearly doesn't make sense

http://en.wikipedia.org/wiki/Horsepower
Brake horsepower
Brake horsepower (bhp) is the measure of an engine's horsepower before the loss in power caused by the gearbox, alternator, differential, water pump, and other auxiliary components such as power steering pump, muffled exhaust system, etc. Brake refers to a device which was used to load an engine and hold it at a desired rotational speed. During testing, the output torque and rotational speed were measured to determine the brake horsepower.

Wheel Horsepower is abbreviated "whp". They may get additional letters based on the drivetrain configuration, like "fwhp", "rwhp", or "awhp" (front wheel horsepower, rear wheel, or all wheel respectively). Generally these labels stay lowercase, not uppercase.

Power at the crankshaft is SAE Net or SAE Certified (which just means the test is done under strict conditions to keep the manufacturer from playing with the results with special oils, fluid levels, etc...)

SAE and BHP need an engine dyno with the engine out of the car.

Wheel horsepower is what everyone uses in the aftermarket community, since pulling your engine for an engine dyno isn't really very realistic, so dyno testing is done at the wheels. It's more relevant anyway, and I personally think that auto makers should release those numbers, not the bhp or sae numbers. The AWD cars would take the biggest hit, followed by RWD cars, with FWD cars having the least power drop. But that is another discussion for elsewhere.
Old 02-28-2014, 03:56 PM
  #134  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,523
Received 1,489 Likes on 839 Posts
Originally Posted by RIWWP
with FWD cars having the least power drop. .
That's what we need !!!! LOL
Old 02-28-2014, 05:06 PM
  #135  
#50
 
bse50's Avatar
 
Join Date: Nov 2007
Location: Caput Mundi
Posts: 7,521
Received 10 Likes on 10 Posts
Originally Posted by Brettus
That's what we need !!!! LOL
or midship engine, transaxle gearboxe like real sportscars have
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Audio Concepts ATL
New Member Forum
21
09-26-2021 01:59 PM
RayBarron
New Member Forum
4
10-19-2015 08:08 PM
Tyblat
Series I Tech Garage
9
08-06-2015 10:43 AM
MarkX
New Member Forum
3
07-31-2015 07:50 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: It's coming back!!!!!!!! (more next rotary 'news')



All times are GMT -5. The time now is 04:04 AM.