Advice sought - FUEL TANK

1200 JOTA

1200 JOTA

Senior member
Location
Australia
I'm presently sorting out a 1200 Jota (America) that has Mikuni RS carbs. that are higher and wider than the Dellortos ... so the fuel tank has to sit about 3/4" high to clear the carburetors.

The present tank (although in good condition overall) has a couple of internal resin coats, so that precludes 'metal work' as a solution and I expect I'll need a new tank. After market is ok unless anyone knows of an OEM tank that might work. I need about 12" width at carb height to clear them.

(sorry about imperial measures .. metric is the go)
 
So your question is what?
Which tank will clear the carbs?
My solution was to raise the rubber mounts at the rear of the tank and to use angled inlet stubs with a 10 degree (I recall) flatter profile.
No issue with tank to carb clearance.


2019-06-13 13.41.06 by Grant Duguid, on Flickr
 
1200 JOTA said:
I'm presently sorting out a 1200 Jota (America) that has Mikuni RS carbs. that are higher and wider than the Dellortos ... so the fuel tank has to sit about 3/4" high to clear the carburetors.

The present tank (although in good condition overall) has a couple of internal resin coats, so that precludes 'metal work' as a solution and I expect I'll need a new tank. After market is ok unless anyone knows of an OEM tank that might work. I need about 12" width at carb height to clear them.

(sorry about imperial measures .. metric is the go)
Click to expand...

You know your other option is to get onto RED and get a set of his angled manifolds then your problem is solved no need to mod the tank. Also he has found that the Mikuni's actually work better when they are more horizontal...
I have FCR's  which are down draught style on the Cico so had to kick them the other way slightly ... so they ware higher now than Mikuni's by a bit yet still managed to squeeze them under the tank without modding it.... all ya need is some out of the box thinking and lucky for you RED has done that for you on Mikuni's.

Love that Gold Paint Grant


Here's a set of Mikuni's with Red's set up nestling neatly under a stock tank at its normal height

normal_IMG_1711.JPG

 
The question would be " are there any production tanks or aftermarket tanks (possibly a larger capacity) that are not as 'waisted' as the regular tank on the triples?"

It's more aesthestic than necessary at the moment but a higher CG and a little too much rubber which will be prone to give in time which makes me want to source another tank if possible.

Another option is to take some good advice and reset the manifolds.

 

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You can do anything and shape a fuel tank but that last thing you want is a bomb under your ass.

Been there. After a 20 mile run on my SFO, back in 75, my Ass became Hot. The stock SF tank had a weakness and dripped gasoline on the battery.  I was lucky and did not go further until I fixed it.

Close call and a lesson well earned ;o)
 
Why not simply commission Boba to make you a CF tank?  He will provide one with the clearance you require.

I have come to understand that Laverdas varied from bike to bike enough that it's not always possible for a fix that works on one bike to work the same on another.  Case in point is my own Mirage 1200 TS.  I have the angled intake stubs (lovely bits they are!) but I still need to raise the aft end of the tank to clear the Mikunis.
 
I used the angled inlet stubs from Red and fitted a cable tie or two to the standard rubber mounts at the rear. The rubbers are quite long where they slide into the frame tube and a few mm less into the tube due to the width of the cable tie makes no difference to how they do their job. Mine have given no issue in 11 years of use.
 
Grant said:
I used the angled inlet stubs from Red and fitted a cable tie or two to the standard rubber mounts at the rear. The rubbers are quite long where they slide into the frame tube and a few mm less into the tube due to the width of the cable tie makes no difference to how they do their job. Mine have given no issue in 11 years of use.
Click to expand...

Couple of o rings on the rubber mounts would do the job nicely too I would have thought Grant  (bigthumb)
 
I am sure someone with plenty of time and money could find an artisan to build an alloy jellyroll, my favourite shaped tank.
 
Brett said:
Hmm wonder if an alloy riser might help in the bedroom  (headnit)
Click to expand...
From what Ive heard... Aluminium is not that popular in the bedroom, bit cold and sharp :( so no Brett may not be that helpful, except as Cam said  :)
 
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