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Fitted a T120 tank for range & I prefer the look of a proper tank.
Very interesting indeed !!
I read your post on the Triumphrat forum.
As i understand this is not a 'plug & play´mod by any means.
Could you please tell us how the install went and what obstacles are to be expected (and how you overcame them)?

I am quite happy with the OEM tank size, but thats probably cause i live on such a small Island :wink2:
Saying that, I am sure many others here would happily install a larger tank for greater touring distance and less trips to the fuel station!
 

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I was waiting to see if someone did this. Looks great. The small tank is awesome but range IS an issue. I would really appreciate a breakdown of what was involved in doing this as I've been thinking the same thing. How is the clearance on the steering? Great job. Thnx for sharing.
 

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That looks super cool. I hope there's some sort of write-up on it or if you could even provide an insight on difficult level and maybe a general break down of what needs to be done.
 

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Discussion Starter #9
I have been asked to post about this, I'm more of a 'do-er' than instructor but hope this helps a bit for anyone contemplating this VERY worthwhile mod.
T120 tank is slightly tight at front around headstock, could 'possibly' be cured by rearranging wiring, a portapower & a bit of peening should sort it out, but because it was always my intention to spray whole bike I opted to do a small cut with grinder on the outside of the welded seam each side (will take a pic & add later) front of tank tunnel was then dressed outward & cuts welded back up.
Rear mounting on T120 tank cut off completely, something I have yet to do is add a metal plate from under the back of the tank to secure down with front seat bolt.
I used modified bobber rear mounting bolted in original position to locate in tunnel of T120 tank, again will have to go to garage lift tank & take a couple of pics to add.
The circular rubbers that go into the side mounting in tunnel, I cut the rear of them down to allow the new tank to sit slightly further forward, maybe 10mm.
All bobber internal stuff fits straight in to tank no problem, sender arm bent downward some to help more accurate empty reading, full does not matter, even in the bobber the sender registers full from 3/4 upward because of tank shape & limited arm movement, the lower end of the scale is far more important than the full tank end.
When I fill up now it tells me 90 miles to empty, it stays there till I have done maybe 70 miles then reads normally as more is used, when it reads empty I have around 15 miles left.
I could mess with it some more but it's fine for me I always know how far I can push it between fill ups.
So not a simple bolt on job but pretty easy for anyone a bit practical.
 

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I have been asked to post about this, I'm more of a 'do-er' than instructor but hope this helps a bit for anyone contemplating this VERY worthwhile mod.
T120 tank is slightly tight at front around headstock, could 'possibly' be cured by rearranging wiring, a portapower & a bit of peening should sort it out, but because it was always my intention to spray whole bike I opted to do a small cut with grinder on the outside of the welded seam each side (will take a pic & add later) front of tank tunnel was then dressed outward & cuts welded back up.
Rear mounting on T120 tank cut off completely, something I have yet to do is add a metal plate from under the back of the tank to secure down with front seat bolt.
I used modified bobber rear mounting bolted in original position to locate in tunnel of T120 tank, again will have to go to garage lift tank & take a couple of pics to add.
The circular rubbers that go into the side mounting in tunnel, I cut the rear of them down to allow the new tank to sit slightly further forward, maybe 10mm.
All bobber internal stuff fits straight in to tank no problem, sender arm bent downward some to help more accurate empty reading, full does not matter, even in the bobber the sender registers full from 3/4 upward because of tank shape & limited arm movement, the lower end of the scale is far more important than the full tank end.
When I fill up now it tells me 90 miles to empty, it stays there till I have done maybe 70 miles then reads normally as more is used, when it reads empty I have around 15 miles left.
I could mess with it some more but it's fine for me I always know how far I can push it between fill ups.
So not a simple bolt on job but pretty easy for anyone a bit practical.

trirocket can you post a pic of your bike? The original photo bucket photos don't show anymore, curious as to what it loos like.
 

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Hi all, I've just joined the forums & for my 50th birthday bought a Bobber Black her in Australia. I'm not very good with my hands, is the above modification difficult for someone who does know motorcycles to do?

What sort of specialist should I take a tank to? Clearly not my local Trumpy dealer...great idea with the T120 tank. Australia is a big country and 9.1L is too small to be functional here. I think the T120 tank is 14L?! Thanks in advance.

It strikes me there is potentially a decent opportunity here given the Bobber seems to have been such a success?!
Best Regards to all
Lenmeister
 

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Hi all, I've just joined the forums & for my 50th birthday bought a Bobber Black her in Australia. I'm not very good with my hands, is the above modification difficult for someone who does know motorcycles to do?

What sort of specialist should I take a tank to? Clearly not my local Trumpy dealer...great idea with the T120 tank. Australia is a big country and 9.1L is too small to be functional here. I think the T120 tank is 14L?! Thanks in advance.

It strikes me there is potentially a decent opportunity here given the Bobber seems to have been such a success?!
Best Regards to all
Lenmeister
Maybe a Speedmaster tank would be a better option. According to this thread its plug and play. Picking one up wont be cheap though I fear.
 

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Going back to the guide for the T120 tank, what is the bare minimum that needs to be done to get it to fit?
 

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"Proper fuel gauge readings" and Triumph Bobbers definitely do not go together. It's WAY off until you get down to less than half a tank. My experience has been even worse now that I've fitted the Speedmaster tank on my bike.
 
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