Author Topic: 1970 Triumph Tiger 650  (Read 66263 times)

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Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #50 on: March 06, 2016, 08:57:53 AM »
Half way down the page there is a 4 gallon 650 tiger tank... ;)

http://www.burtonbikebits.net/Tanks.htm
The only 4gallon (UK) I see is for the pre-unit 52-56, had different mounts.

Offline Retro Rocket

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Re: 1970 Triumph Tiger 650
« Reply #51 on: March 06, 2016, 02:20:26 PM »
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline 754

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Re: 1970 Triumph Tiger 650
« Reply #52 on: March 06, 2016, 02:53:11 PM »
Just try fixing it. Guys have fixed far far worse..
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Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #54 on: March 06, 2016, 03:20:18 PM »
This one..?

http://www.burtonbikebits.net/images/cimg0444-web.jpg
Yes, that is for 52-56.

Ahh....Ok, thats a shame, I was actually searching for an aluminum version I saw a while back, couldn't find it, I think it was from a UK tank maker... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #55 on: March 07, 2016, 02:56:52 PM »
This one..?

http://www.burtonbikebits.net/images/cimg0444-web.jpg
Yes, that is for 52-56.

Ahh....Ok, thats a shame, I was actually searching for an aluminum version I saw a while back, couldn't find it, I think it was from a UK tank maker... ;)
Not sure I like the sharp edges around the knee dents. Like the factory smooth transition better.If worse comes to worseI can always add the rear mounting tab to fit it to the 70 model.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #56 on: March 07, 2016, 02:57:06 PM »
Looks like it all can be located on the passenger peg bracket. Bored a hole through to locate the hose and made a small strap to bolt the reservoir to.



The m/c fitting was in the wrong location so I had to cut it off and clock it in the correct position before JB Welding it back together.


Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #57 on: March 07, 2016, 02:57:56 PM »
Have you considered putting the Triumph motor in the Norton frame and making a Triton? Since you are straying from pure stock anyway, this may be the best use of the parts you have on hand, and was a common combination back in the day.


NO........

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #58 on: March 07, 2016, 06:48:01 PM »
Clearer pics :wink2: of the master cylinder set up. Found a 90° banjo fitting so routing the fluid line shouldn't be an issue. This all worked out amazingly simple:





Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #59 on: March 09, 2016, 04:24:57 PM »
I figured out the tank issue. The rust through is concentrated in the areas I posted pics of. It's on the left side of the tank only. Apparantly water got in the tank while it was parked for 40 years on the side stand. What little water was in it ran to that leaning edge where it slowly ate away at the metal there. I am going to attempt to braze the holes and seal the tank. These tanks are like hens teeth, can't find one in decent shape for less than $400-$500, if you can find one at all.


Offline Stev-o

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Re: 1970 Triumph Tiger 650
« Reply #60 on: March 09, 2016, 04:29:07 PM »
I recommend Caswell epoxy sealer.  My H1 tank came to me with a poor pinhole repair and it sprung a leak. Simply sealed it with Caswell and all is well now.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #61 on: March 09, 2016, 05:06:44 PM »
I recommend Caswell epoxy sealer.  My H1 tank came to me with a poor pinhole repair and it sprung a leak. Simply sealed it with Caswell and all is well now.
That's the plan. I am familiar with all the Caswell products. When I first started powder coating I used a Caswell powder coating gun. They have a lot of good anodize and plating kits for reasonable money.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #62 on: March 10, 2016, 04:21:57 PM »
So I start searching for a welder today to braze up my holes. Was striking out as none of them do brazing. Then it dawned on me that this is not a welding job, but a braze job most likely accomplished by a radiator shop. I just happen to know one locally, they used to sponsor my race car. So I grab the tank and raced on down there only to find that the guy who does the radiator repair there died of cancer last year and they haven't been able to find a competent replacement. We talked and he told me the tank was definitely fixable and referred me to 2 other places about 25 miles away. He told me that even a 2 part epoxy could be used to fill the holes. I called one of the shops that said they could fix it and hem and hawed and changed his tune without seeing the pics and said they probably wouldn't be able to help me, but bring it down to look at. It was at this point I said screw it and went home and got out the JB Weld and started filling holes. Looks like this is going to be adequate. I sold another $285 worth of Honda parts today so I'll go ahead and order some Caswell sealer and try and finish the tank.
I pushed on the holes areas with my thumb and you can't move any of the metal because it is too thin.
Earlier in the day I made a call and found a brand new unpainted tank in the box for $500, it's a deal , but I don't have $500 right now. No I won't say where I found it, I may get it later.









Offline Retro Rocket

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Re: 1970 Triumph Tiger 650
« Reply #63 on: March 10, 2016, 04:38:26 PM »
Why not just cut out the bad section and weld in some new steel...?
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #64 on: March 10, 2016, 05:14:50 PM »
Why not just cut out the bad section and weld in some new steel...?
I'm not a welder, it would cost me the price of a new tank to have it done and then it would still need filler and work. The petcock areas is bad and would not be easily replaceable with some steel. Filling the holes is way easier than any other method and I can do it myself. I would need to remove the whole lower 1" of the left side of the tank.


« Last Edit: March 10, 2016, 05:17:48 PM by Powderman »

Offline Stev-o

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Re: 1970 Triumph Tiger 650
« Reply #65 on: March 10, 2016, 05:45:01 PM »
Why not just cut out the bad section and weld in some new steel...?

Not necessary Mick.  Caswell instructions state to put tape over pin holes before sealing.
I just ordered some....


http://www.ebay.com/itm/HONDA-YAMAHA-KAWASAKI-SUZUKI-ETC-CASWELL-FUEL-AND-OIL-TANK-SEALER-BURST-PACK-/400975837693?hash=item5d5c05b9fd:g:AQsAAOSw9N1VlWw0&item=400975837693&vxp=mtr
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

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Re: 1970 Triumph Tiger 650
« Reply #66 on: March 10, 2016, 05:59:16 PM »
Why not just cut out the bad section and weld in some new steel...?

Not necessary Mick.  Caswell instructions state to put tape over pin holes before sealing.
I just ordered some....


http://www.ebay.com/itm/HONDA-YAMAHA-KAWASAKI-SUZUKI-ETC-CASWELL-FUEL-AND-OIL-TANK-SEALER-BURST-PACK-/400975837693?hash=item5d5c05b9fd:g:AQsAAOSw9N1VlWw0&item=400975837693&vxp=mtr

I meant to negate the use of a liner mate... ;)  Even with the petcock area, thats not a hard fix for a competent welder ... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Stev-o

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Re: 1970 Triumph Tiger 650
« Reply #67 on: March 10, 2016, 06:12:09 PM »
Why not just cut out the bad section and weld in some new steel...?

Not necessary Mick.  Caswell instructions state to put tape over pin holes before sealing.
I just ordered some....


http://www.ebay.com/itm/HONDA-YAMAHA-KAWASAKI-SUZUKI-ETC-CASWELL-FUEL-AND-OIL-TANK-SEALER-BURST-PACK-/400975837693?hash=item5d5c05b9fd:g:AQsAAOSw9N1VlWw0&item=400975837693&vxp=mtr

I meant to negate the use of a liner mate... ;)  Even with the petcock area, thats not a hard fix for a competent welder ... ;)

That would be the problem - finding a competent welder. And then, I bet it would be a costly repair, money better spent on a good tank down the road.  I have a few sealed tanks now, it is not a bad option.

'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 754

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Re: 1970 Triumph Tiger 650
« Reply #68 on: March 10, 2016, 07:14:29 PM »
 I would try thin patches and solder. Solder held many tank together for many decades from the factories..
Clean is important and a hot iron..bernzomatic might work..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #69 on: March 11, 2016, 02:48:05 PM »
I patch all the holes with JB Weld,came out nice.Threw the chain back in and started shaking to see if any more holes might pop up or if the chain would knock out any of the filler. It didn't do anything negative and i was able to knock another 1/2 cup go fine rust out of it.

Offline grcamna2

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Re: 1970 Triumph Tiger 650
« Reply #70 on: March 11, 2016, 06:40:00 PM »
You going to line it w/ the Caswell now ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #71 on: March 11, 2016, 07:59:47 PM »
You going to line it w/ the Caswell now ?

No, I have to wait till I powder coat it first with the black base coat. Then it can be sealed before or after the paint. What is your concern?

Offline grcamna2

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Re: 1970 Triumph Tiger 650
« Reply #72 on: March 11, 2016, 08:13:09 PM »
You going to line it w/ the Caswell now ?

No, I have to wait till I powder coat it first with the black base coat. Then it can be sealed before or after the paint. What is your concern?

I didn't really have a concern just wondered if the Caswell dries very hard? I never used it but have only heard good things about it.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Powderman

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Re: 1970 Triumph Tiger 650
« Reply #73 on: March 11, 2016, 09:58:41 PM »
You going to line it w/ the Caswell now ?

No, I have to wait till I powder coat it first with the black base coat. Then it can be sealed before or after the paint. What is your concern?

I didn't really have a concern just wondered if the Caswell dries very hard? I never used it but have only heard good things about it.


It is a 2 part epoxy and it does cure hard. It can be used right over the rust without having to remove all the rust. Not that I wouldn't still do the best clean out I can before using it.

Offline 754

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Re: 1970 Triumph Tiger 650
« Reply #74 on: March 12, 2016, 01:37:11 AM »
 I would want to get in with a borescope, and see what the area around the pinholes looks like from the inside.
likely does not matter much when you line it, but myself, I would use the liner only if I could not fix the holes..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way