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Tachodrive gearbox

Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 7:49 am

Does anyone know if the T140V can be run without the tacho gearbox as I am running my Triton without clocks and would like to remove the ugly tacho gearbox :D

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Re: Tachodrive gearbox

Postby Fast Eddie » Sat May 20, 2017 8:38 am

No problem.

You just got buy, make, modify a plug of some kind.
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Re: Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 10:11 am

Cheers Eddie got it off and plug made I assume the drive on the end of the exhaust cam should stay on??

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Re: Tachodrive gearbox

Postby Fast Eddie » Sat May 20, 2017 10:27 am

The "drive end of the exhaust cam" should be part of the cam itself, so yes, that stays put. Just make sure you've taken all tacho drive box bits out of there.
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Re: Tachodrive gearbox

Postby B+Bogus » Sat May 20, 2017 12:20 pm

I recall the sleeve nut which holds the gearbox and provides the bearing for the worm drive has a left hand thread - not sure if it's UNC?

Any ideas?
Cheers,

Andy

1974 Roadster & Interstate
1964 650SS CR
1971 PR project
1975 Ducati 900ss x2
1975 Triumph T160
1976 Triumph T140
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Re: Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 12:52 pm

Yeah it is left hand thread don't know which type but heath robinson bung made :D will eventually fit a proper blanking plug if one is available :wink:

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Re: Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 12:54 pm

Fast Eddie wrote:The "drive end of the exhaust cam" should be part of the cam itself, so yes, that stays put. Just make sure you've taken all tacho drive box bits out of there.


Thought the drive in the end of the exhaust cam screwed in :?:

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Re: Tachodrive gearbox

Postby Fast Eddie » Sat May 20, 2017 1:32 pm

Rocker wrote:
Fast Eddie wrote:The "drive end of the exhaust cam" should be part of the cam itself, so yes, that stays put. Just make sure you've taken all tacho drive box bits out of there.


Thought the drive in the end of the exhaust cam screwed in :?:


Not as I recall, the end of the cam is slotted, and a 'thimble' sits in the slot and acts do drive the tacho drive gear. Although different years may be different...
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Re: Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 2:41 pm


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Re: Tachodrive gearbox

Postby Rocker » Sat May 20, 2017 2:45 pm

I've found the proper bung here it is;
http://www.nsamotorcycles.co.uk/21-1871 ... 6346-p.asp
for anyone wanting to remove the drive unit :D

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Re: Tachodrive gearbox

Postby Fast Eddie » Sat May 20, 2017 5:52 pm

Gotchya. Definitely a different set up to what I've seen.

I'd guess that when the factory used bungs (on the late Thunderbird, etc, that didn't have tachos), then they'd surely leave out that screw in part?

So I'd just check carefully for clearance when you use that bung.
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