[TR] Flat towing a TR3

[Tony Drews]

Spinning the differential unloaded cause no issues.  Spinning the output 
shaft of the transmission while it's in neutral provides no lubrication 
within the transmission and will nuke applicable bearings / bushings.  
When the car is in gear, oil is being flung about the transmission, in 
neutral that's not the case.  That's why you need to disconnect the 
driveshaft before towing with the rear wheels on the ground.

Regards, Tony Drews

On 10/28/2023 5:58 PM, Frank Fisher wrote:
> enlighten me as to why one would have to disconnect the driveshaft.
>
> inquiring minds need to know
>
> Frank
>
>
>
>
>
> On Saturday, October 28, 2023 at 11:11:09 AM PDT, Kinderlehrer 
> <kinderlehrer at comcast.net> wrote:
>
>
> Hardy Prentiss used to flat tow his TR3 behind a Jaguar E-type all 
> over the country. He did disconnect the driveshaft before towing.
>
> Bob
>
> *From:*Triumphs [mailto:triumphs-bounces at autox.team.net] *On Behalf Of 
> *Philip Ethier
> *Sent:* Saturday, October 28, 2023 8:37 AM
> *To:* Art McEwen
> *Cc:* triumphs at autox.team.net
> *Subject:* Re: [TR] Flat towing a TR3
>
> I fried a MKII Cortina bearing by flat-towing.
>
> On the other hand, a SAAB 96 was no problema, just put the car in 
> Freewheel.
>
> On Thu, Mar 28, 2019 at 9:06 PM Art McEwen <amcewen2 at cogeco.ca> wrote:
>
>     I read somewhere where this wasn't possible without disconnecting
>     the driveshaft due to, I think, a bearing in the gearbox or O/D
>     that doesn't get lubricated without the gearbox in gear.   But
>     I've also read reports of Kas Kasner and his contemporaries
>     routinely flat towing to the race track.    Which is true? Both? 
>     Neither?  Or is Kas forgetting he used to disconnect the
>     driveshaft at the end of the weekend?
>
>     I've seen several MGBs (different gearbox design?) and MX5s being
>     flat towed behind RVs, I know the MX5 manual says it's a no-no.
>
>     Just wondering.
>
>     Art '60 TR3A.
>
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> -- 
>
> Phil Ethier West Side Saint Paul Minnesota USA
>
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