[TR] Experience with Vitesse 5-speed transmission conversion?

[Anthony Rhodes]

Even if the ENGINE may not mind cruising at 4K rpm, I do not.   

The Toyota tranny is quoted at 80 MPH at 3K RPM.  I think this correlates with 5th gear ratio of 0.75.  I would love to have that ratio on the Miata transmission.  

Some trannies have optional gear sets to select your ratios to suit your needs.  Maybe Miata offers a similar option.  

Sent from my 1837 Babbage Analytical Engine

> On Jan 2, 2020, at 10:19 PM, Bryan Loy <paradisemusicnc at gmail.com> wrote:
> 
> 
> I don't know, Tony.  I'm not sure what the ratio numbers are, I do know that that little 4 banger just buzzes on and on, doesn't seem to mind the high reves at all, redlines at 7K, where the TR6 is at 5500, if I'm not mistaken.  I really don't think that the TR6 engine would enjoy 4K at 80 mph, but I could be wrong.  I was once. :-)
> Bryan
> 
>> On Thu, Jan 2, 2020 at 6:46 PM Anthony Rhodes <spamiam at comcast.net> wrote:
>> Hmmm. 3K rpm at 60 MPH is about what my 4th gear is on my non-OD tranny.    I would have thought that the Miata 5th gear might have been “direct”, like the TR’s 4th. And 6th would be some sort of overdrive. 
>> 
>> Without having 20-30% overdrive then there is no great advantage to the Miata unit!
>> 
>> -Tony
>> 
>> Sent from my 1837 Babbage Analytical Engine
>> 
>>>> On Jan 2, 2020, at 2:40 PM, Bryan Loy <paradisemusicnc at gmail.com> wrote:
>>>> 
>>> 
>>> As far as gear ratios go, I can't say, numbers wise, but I have an '04 MX5 with the 6 speed, and it is low.  6th gear at 60mph, the engine is turning 3K.   Pretty much 20MPH for every 1K on the tach. 
>>> Bryan
>>> 
>>>> On Thu, Jan 2, 2020 at 2:27 PM Anthony Rhodes <spamiam at comcast.net> wrote:
>>>> It is indeed pricey.  But it appears to be a complete new transmission and all the required adapter stuff ready to go.  The only way it would be better as a conversion is if it retained the original space cylinder.
>>>> 
>>>> So for a complete new modern (hopefully long life) overdrive transmission, the price is not terrible.
>>>> 
>>>> It is likely a better solution than the HVDA because those old Toyota transmissions may well be “used up”,not just “used”. And they are hard to find.  
>>>> 
>>>> For me, I found the right Toyota transmission to be as rare as ... as a friend of mine puts it...   as rare as rocking horse manure.   He may not actually have used the word “manure”. 
>>>> 
>>>> So I like this Miata option!
>>>> 
>>>> Does anyone know the gear ratios?  The Moss description does not indicate the ratios.  
>>>> 
>>>> -Tony
>>>> 
>>>> Sent from my 1837 Babbage Analytical Engine
>>>> 
>>>> > On Jan 2, 2020, at 2:02 PM, triumphs-request at autox.team.net wrote:
>>>> > 
>>>> > Message: 1
>>>> > Date: Wed, 1 Jan 2020 13:54:49 -0600
>>>> > From: Dean Mericas <dmericas at gmail.com>
>>>> > To: triumphs at autox.team.net
>>>> > Subject: [TR] Experience with Vitesse 5-speed transmission conversion?
>>>> > Message-ID: <3D51629D-3D80-44B6-9EEF-01C3BD216362 at gmail.com>
>>>> > Content-Type: text/plain;    charset=utf-8
>>>> > 
>>>> > I see that Moss now carries an a 5-speed transmission conversion that appears to use Miata internals in a custom case and bell housing. It isn?t cheap, but as an apparent drop in replacement I think the installed cost may be about the same as the Toyota-based HVDA kit.
>>>> > 
>>>> > Does anyone on the list have first hand experience with this particular conversion?
>>>> > 
>>>> > Thanks. 
>>>> > 
>>>> > Dean Mericas
>>>> > 1965 TR4
>>>> > Austin, TX
>>>> 
>>>> ** triumphs at autox.team.net **
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