R100 petrol tank on a commando?

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DonOR

DonOR

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My leaking glass tank has left my bike unusable.
My first choice, alloy from waldridge, is nice, but a bit out of budget for these times.
A fellow on the other side of the island, a three hour drive (one way), has an R100 tank in excellent shape, for a song.
Any members out there try this one? It would great to hear if it clears the bars without spending a day at it.
Cheers,
Don

R100 petrol tank on a commando?
 
The scale of that tank is wrong. In reality, it is larger by a significant amount.
 
grandpaul said:
The scale of that tank is wrong. In reality, it is larger by a significant amount.
Click to expand...

thanks Paul, that's simply my photoshop visualization of the concept. I guess I could fit an electraglide tank on there if I was really crazy... I'll let you know what I find out.
 
looks cool in ur pic 8) but gp is right ... the actual tank is prob 2.5 times that size
 
NOW I looked it up...BMW tank is 6 gallons, commando glass tank, about 3.
so much for that idea, any other suggestions?
 
The big problem with fitting any other tank to the Commando is the large diameter of the frame spine which needs an even larger tunnel to clear it and the rear of the engine cradle joins the spine in quite a forward position (even Roadster tanks have a clearance for them). I can't envisage any standard tank that will drop straight on.
 
Mount a Hi Rider tank. Someone has to have a cheap Hi Rider tank laying around.

Sorry, I just love those tanks so I'm trying to live vicariously through you.
 
Coco said:
Mount a Hi Rider tank. Someone has to have a cheap Hi Rider tank laying around.

Sorry, I just love those tanks so I'm trying to live vicariously through you.
Click to expand...

I've got an NOS Hi-Rider tank but it is, as per the vast majority , fibreglass as well. Only very late examples had steel. It is a nice tank and ideal for showing off trick head steadies !

The cheapest steel tanks in the UK are Long Range Fastbacks but postage charges are going to push the cost right up.
 
DonOR said:
My leaking glass tank has left my bike unusable.
My first choice, alloy from waldridge, is nice, but a bit out of budget for these times.
A fellow on the other side of the island, a three hour drive (one way), has an R100 tank in excellent shape, for a song.
Any members out there try this one? It would great to hear if it clears the bars without spending a day at it
Click to expand...

I think you will need to bite the bullet and find a used steel Commando tank to repair or a new one from Pakistan (that might also need some repair).
 
grandpaul said:
The scale of that tank is wrong. In reality, it is larger by a significant amount.
Click to expand...
Actually for a 6 gallon tank I'd say the scale is pretty well bang on.
But that is one big mutha of a norton.
 
RennieK said:
grandpaul said:
The scale of that tank is wrong. In reality, it is larger by a significant amount.
Click to expand...
Actually for a 6 gallon tank I'd say the scale is pretty well bang on.
But that is one big mutha of a norton.
Click to expand...

Keep in mind that the Interstate is only 5 gals.
 
move the back edge of the tank back to the pin striping on the side cover, that would make it similar to an interstate
 
swooshdave said:
RennieK said:
grandpaul said:
The scale of that tank is wrong. In reality, it is larger by a significant amount.
Click to expand...
Actually for a 6 gallon tank I'd say the scale is pretty well bang on.
But that is one big mutha of a norton.
Click to expand...

Keep in mind that the Interstate is only 5 gals.
Click to expand...


The early Interstate tank capacity was listed as "5.84 Imperial gallons, or 7.3 US gallons (26.57 litres)" however, the later Interstate tanks were 5.25 Imp.gal./6.3 US gal./23.87Ltr.

Even so, the BMW tank couldn't be made to fit easily, as it can hopefully be seen in the photos, not only is it too long (surprisingly the BMW tank isn't much longer than the Roadster tank!), it would foul the frame loop tubing!

R100 petrol tank on a commando?


R100 petrol tank on a commando?


Here's a BMW frame for comparison:
R100 petrol tank on a commando?
 
Nice one Les !

Once again L.A.B. demonstrates his commitment to the forum by completely dismantling a motorcycle for the benefit of forum members ! :D
 
L.A.B. said:
swooshdave said:
Keep in mind that the Interstate is only 5 gals.
Click to expand...


The early Interstate tank capacity was listed as "5.84 Imperial gallons, or 7.3 US gallons (26.57 litres)" however, the later Interstate tanks were 5.25 Imp.gal./6.3 US gal./23.87Ltr.
Click to expand...

I was using metric gallons. :mrgreen:
 
many thanks LAB!
this does not look like an easy fit... though I do have a real big rubber mallet here, hehehehe.
If I do find a low budget, short term solution, I will post.
Cheers,
Don
 
If your tank is completely unusable, it must be time to try some radical experimentation! If you are willing to let it go, let me know and I will gladly torture it and report back to the group.
Russ
 
There is a Suzuki tank that might come close to fitting. I have one at home I made into a faux tank for a Goldwing. I'll post a picture tonight. The tough pasrt for me is that I like the shape of Commando tanks.
 
rvich, once I find a solution, you can have the tank.
Like Cookie, I think the design, form, contours, and workmanship are sublime... it is simply beautiful, but ethanol will completely destroy it, and after two treatments of POR-15, I'm ready to give it up. I'll let ya know.
 
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