Speedo + tacho cables, Le Mans 1

Technical Big Block Tonti and Loop Frame models
1

I suspect I am not the only one who has had this issue: the cables won’t squeeze in behind the headlamp shell to secure to the back of the gauges.

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Suggestions please.

2

I think that some Guzzis have a 90-degree gearbox for the speedo drive that mount on the back of the instrument, and possibly the tacho. Might be worth a look through Gutsibits or similar websites?

4 Likes
3

As above, most have a 90 degree gearbox on the back of the clocks. Have alook at the parts book to see if that is correct for the LeMans.
This is the back of the clocks on my 1978 Spada

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4

I was fiddling with exactly the same thing on my Mk1 last weekend. It came with weirdly long brackets holding the speedo cluster to the fork legs. This made the wee fairing an odd fit and messed with the cables. I sourced original brackets and the angles were very different. Cables now fit well. I can take some photos next weekend if it helps…

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5

Thanks. Something like that would do the trick.

6

Hi Steve. The original Lemans did not make use of right angle gear boxes on the Speedo or tachometer. There must be something else wrong with the bracketry as mentioned above. Having said that the cables on mine, which I’ve had from new, do rub against the back of the headlight shell. Just a thought, is your headlight of the correct type? The shell is very shallow. Hope this helps. Phil

7

Are those the brackets you had to remove? They look the same as mine.

8

Yes photos would be helpful. Thanks👍🏻

9

These are the new (old ones). The angle is slightly different and the holes are closer than the ones I removed. This meant that the cluster was further forward with less room for the cables. From a distance they do look the same.

I can take some measurement and photos but won’t be near the bike for until next week as it’s stored elsewhere…

10

Thank you. That would be great.

It has also been suggested that the ears are not fitted correctly.

11

As Phil_Skinner suggests, you have the wrong headlamp shell. I have two hanging up in the garage (one from a LeMans and one from a G5) and both are very much slimmer than the one you have. If you look at the picture that Don-Spada posted, you can make out just how shallow the correct headlamp bowl is.

I’m guessing, but I think yours may be off a late loop frame model.