Renault Transaxles

[Scott Calabro]

"Over here in the US Renault boxes are as common as rocking horse poo." (Courtesy Ron Earp)


Our 5 speed UN1 transaxle, with RH change, modified 2nd & 3rd gears and drilled out oil ways, is available all day long for about $2600.

At last count 10 were on the self.

So much for the proverbial pony.

S

 

[Ron Earp]

Re: Want an All(most) American Transaxle?

Scott, this thread isn't about advertising Renault boxes that Tornado sells. Renault boxes were used in precious few cars offered on US soil. They are extremely rare for the average enthusiast to run across while hunting up a transaxle for a mid-engine car build.

Please keep the advertising to the Manufacturer's Forum and the Tornado forum.

 

[Scott]

Re: Want an All(most) American Transaxle?

The only car I can think of with the proper Renault transaxle that made it to the USA was the DeLorean DMC12.

 

[Dave]

Re: Want an All(most) American Transaxle?

The only car I can think of with the proper Renault transaxle that made it to the USA was the DeLorean DMC12.

Lotus used Renault transaxles in it's Esprit... last of which was the V8, which then finished producing in around 2004

 

[Graeme Stebbing]

Re: Want an All(most) American Transaxle?

Hi Guys, i Heard that something called a Chrysler/jeep Medallion went to the USA i was told it had a Renault transaxel fitted , but have not been able to confirm, anyone know for sure.

Regards
Graeme

 

[Ian K]

Re: Want an All(most) American Transaxle?

Hi Guys, i Heard that something called a Chrysler/jeep Medallion went to the USA i was told it had a Renault transaxel fitted , but have not been able to confirm, anyone know for sure.

Regards
Graeme

Yes, one iteration of the Eagle Medallion ('87 - '89) used a Renault UN1. I believe it is
the UN1-013 as found in the Renault 21 (the Medallion is basically a Renault 21 rebadged,
and was even sold as a Renault before being rebranded as an Eagle in the US).

Ian

 

[Neal]

HOT! Funny to think the gearbox would end up in a 40...

 

[Stephane Goria]

Scott,

What does :

"modified 2nd & 3rd gears" means? a different ratio, straigt cut pinions.....etc...?

"Drilled out oil ways means" : oil ways in pinions such as 1st and 2nd gear, housing holes...?

Wich UN1 are they? Are they 9x31 or 9x35? Diff with 2 or 4 planet wheels?

Regards

LastPago

 

[victor]

HOT! Funny to think the gearbox would end up in a 40...

I may be a little dumb, alrigth, but how can you fit that kind of transaxle in a car like that? I am just asking, not passing judgement. I would like to know.

 

[BruceA]

Re: Want an All(most) American Transaxle?

Yes, one iteration of the Eagle Medallion ('87 - '89) used a Renault UN1. I believe it is
the UN1-013 as found in the Renault 21 (the Medallion is basically a Renault 21 rebadged,
and was even sold as a Renault before being rebranded as an Eagle in the US).

Ian

The UN1-13 was from the 21 turbo only. The standard Renault 21 sedan has the NG series gearbox, which is somewhat smaller and very less capable of handling any large horsepower.

 

[Ian K]

I may be a little dumb, alrigth, but how can you fit that kind of transaxle in a car like that? I am just asking, not passing judgement. I would like to know.

The same way this car did it:

http://thecarnut.typepad.com/photos/uncategorized/audi5000.jpg

The engine was mounted transversally, the transmission longitudinally, and
the nose of the car was long enough to accept it.

Ian

 

[Roark_John]

Um....negative Ghost Rider, that pattern is full...

In the Audi 5000, along with every OTHER Audi that has a longitudinal transaxle, the engine is arranged inline with the transaxle.

There is no mix and match of transverse/inline layouts among conventional car companies. There are only 2 cars I am aware of that DO follow the transverse engine/longitudinal transaxle...one of which is the Lamborghini Miura, the other is the Cizeta-Moroder V16T.

Even the Vector W8 originally used a three-speed Oldsmobile Toronado transaxle in its original logitudinal orientation.

I know this is the internet, but that is no excuse to perpetuate falsehoods...it only makes you look foolish when you are caught.

The same way this car did it:

http://thecarnut.typepad.com/photos/uncategorized/audi5000.jpg

The engine was mounted transversally, the transmission longitudinally, and
the nose of the car was long enough to accept it.

Ian

 

[BruceA]

.

There is no mix and match of transverse/inline layouts among conventional car companies. There are only 2 cars I am aware of that DO follow the transverse engine/longitudinal transaxle...one of which is the Lamborghini Miura, the other is the Cizeta-Moroder V16T.

I just thought I might add my snippet to this - the Miura has a transverse gearbox actually, its located transversly (parallel) to, and just behind the crankshaft driving to a helical crownwheel for final drive. You are correct about the Cizeta though, and in fact it uses the very same ZF 5DS25/2 transaxle that is in many of our GT40's.
Another view of the idea, the McLaren F1 has a longitudinal engine but transverse gearbox!

 

[Roark_John]

In that case, we must also include the Ferrari F348 & F355 as those cars had logitudinal engine mountings with transverse gearbox arrangements as well.

I just thought I might add my snippet to this - the Miura has a transverse gearbox actually, its located transversly (parallel) to, and just behind the crankshaft driving to a helical crownwheel for final drive. You are correct about the Cizeta though, and in fact it uses the very same ZF 5DS25/2 transaxle that is in many of our GT40's.
Another view of the idea, the McLaren F1 has a longitudinal engine but transverse gearbox!

 

[Stephane Goria]

Scott,

I am still waiting for the answers to my questions about the modifications you announced......:shifty:

Cheers

 

[Scott Calabro]

Last Pago,

It is what it says.

The specifics of the modifications are proprietary.

Regards,
Scott

 

[Malcolm]

ie not going to tell you what you are buying! I got a box full of modified bits too....

 

[Darnel A.]

Wow, I think which version of the UN1 transaxle are you selling is a fair question, since, the strength and ultimately my interest depends on this.


Darnel

 

[Stephane Goria]

That is for sure a special marketing strategy : Buy it first and you'll know what it is...:stunned:

I fully understand that Tornado USA doesn't want to disclose the details of the proprietary modifications engineered in the UN1 but I don't understand why further and global informations can't be given.

Tornado USA wrote :

"Our 5 speed UN1 transaxle, with RH change, modified 2nd & 3rd gears and drilled out oil ways, is available all day long for about $2600."

As I previously wrote "modified 2nd and 3rd gears" don't mean anything and can mean a lot. Without entering into deep details on how the UN1 is made, these words can mean various things of various values :

Let's consider "Modified 2nd gear" could mean :

Option 1 :The input pinion of the 2nd is directly machined in the primeshaft. If you change the teeth cutting or modify the ratio, it means that you have to modify both pinions and so the primeshaft. Is the primeshaft modified? (Big value) and if so the new ratio would be a great selling argument.

Option 2 : Also, there is a spring on the shifting rail to help to engage the 2nd gear..after a while this spring often gets into trouble...and some specialists remove it others change the spring strength, others polish the shift rail to make the shifting softer..etc....

Option 3 : Dog teeth are weak and can quickly come rounded, they can be cutted to an other angle and strengthened with for example a shot peening...

Option X : Some blue printing - heavy duty needle bearing - lightened pinions and hubs - lightened locking ring...etc....

The list of option is long and obviously they don't bring the same benefits or value...

Also "drilled out oil ways" can mean holes inside the case as for example the oil flow betwen main section and rear section can be improved...it can be also enlarged oil ways in the 1st and 2nd pinion, or even holes in the 3rd, 4th and 5th pinions as they don't have any oil holes or it might be oil connectors to add a cooler to the gearbox or let's dream...all these options..;-)

And just to finish, UN1 comes with 2 final drive ratio : 9x31 or 9x35. The first one will give you higher speed for a given RPM but less torque, the second the contrary, eventually these are also important informations to know.

That was what I had to say...let's go back to work...:sad:

LP

 

[(C)arlos]

If this is really a peace of well done engineering, get yourself some money and register a worldwide patent to protect your intellectual property as real companies do.

Ooohh hang on a second, this only works if it is YOUR intellectual property and not the chinese way of engineering right ?