Tachodrive gearbox

Rocker · May 20, 2017

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

Fast Eddie · May 20, 2017

No problem.

You just got buy, make, modify a plug of some kind.

Rocker · May 20, 2017

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

Fast Eddie · May 20, 2017

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.

B+Bogus · May 20, 2017

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?

Rocker · May 20, 2017

Yeah it is left hand thread don't know which type but heath robinson bung made

will eventually fit a proper blanking plug if one is available :wink:

Rocker · May 20, 2017

Fast Eddie said:
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 :?:

Fast Eddie · May 20, 2017

Rocker said:
Fast Eddie said:

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.

Click to expand...

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...

Rocker · May 20, 2017

This is the screw in tacho drive
http://www.ebay.co.uk/itm/70-9988-TRIUM ... 1268501615

Rocker · May 20, 2017

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

Fast Eddie · May 20, 2017

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.

Tachodrive gearbox

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