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Brrrummm!
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317 Posts
Discussion Starter #1
I have been trawling the Internet for a fuel bulkhead 90deg elbow to install into a fuel tank for a gravity feed.

Who knows where I can source on of these items from? Many thanks in anticipation of a positive reply.

Mark R
 

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Brrrummm!
Joined
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317 Posts
Discussion Starter #3
J,

The application is to install a gravity fed auxiliary fuel tank on my R1200GS for extended travel increasing the range to about 370 miles. The bulkhead elbow will be installed into the RHS tank circular plate. The bulkhead fitting can be 9/16 diameter or less and the fuel feed tube inside diameter can be 1/4 or 5/16 or mm equivalent. The importance of an elbow is that clearance is needed to prevent side panel fouling. This elbow is the critical item. Many thanks for your help.

Mark
 

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Kymmy accepts no responsibility for this blondes c
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2,075 Posts
no idea for barbed end in those sort of sizes but in threaded both goodridge and earls do them.

-6 in ally from earls is a 983306 (9/16 threaded)
-6 in steel from earls is a 963306 (9/16 threaded)

-6 in ally from goodridge is a AN833-06D (jic threaded)
-4 in ally from goodridge is a AN833-04D (jic threaded)

also in -4 (brake fittings) you have the earls steel bulkhead
think its a 962266 or 962206 depending on if its a tapered tread or not (i have these on the shelf if you want a pic of one).

both earls and goodridge are now based on silverstone and should do over the phone retail orders.

01327 858 221 earls
01327 858799 goodridge

if goodridge wont do it retail then you will have to go through an agent like merlin motorsport (01249 782101 )

if you get no joy with either let me know as i have accounts with both.
 

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Premium Member
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6,168 Posts
J,

The application is to install a gravity fed auxiliary fuel tank on my R1200GS for extended travel increasing the range to about 370 miles. The bulkhead elbow will be installed into the RHS tank circular plate. The bulkhead fitting can be 9/16 diameter or less and the fuel feed tube inside diameter can be 1/4 or 5/16 or mm equivalent. The importance of an elbow is that clearance is needed to prevent side panel fouling. This elbow is the critical item. Many thanks for your help.

Mark
Why not try and find an adventure tank it has to be a neater (and reversible) option. I get 35 litres in mine
 

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Brrrummm!
Joined
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317 Posts
Discussion Starter #6
Boris,

I want my R1200GS to remain as standard as possible as this maintains its value and is better for trading in the future. To fit a GSA tank is not without its challenges. New side panels, new protection bars and a fuel gauge system which is not calibrated for the larger volume.

My gravity fed system will be used where and when required and designed to be uninstalled within a few seconds with the pillion seat back in its original position. The only sign of a modification will be the extended fuel line and this will have a short tail near to the tank and a removal fuel line extension.

I have been engineering my own motor sport challenges for years and this is the first one for a bike and know it will be successful. I'll take some photographs and do a write-up for the forum in time. Thanks for your interest.

Mark
 

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Brrrummm!
Joined
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317 Posts
Discussion Starter #7
J,

Many thanks for pointing me in the Earls and Goodridge direction. A Goodridge Part No. AN921-06 may be a better part as it appears to have a fixed flange which would offer a better seal. I will contact both companies early this week. Thanks again.

Mark
 

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Kymmy accepts no responsibility for this blondes c
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2,075 Posts
921-06 is the old escort wrc fuel pump top fitting so they are quite east to find, down side is that they dont have both ends convex to take a barb! :thumbleft:




dont have a 921 thats not fitted but thats the equ and the earls -4 steel version which is way neater, i have used -4 fittings for gravity fed fuel on a few engines and they cope ok upto about 1200cc.
 

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Brrrummm!
Joined
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317 Posts
Discussion Starter #9
I contacted Earls and Goodridge today and both had the items in stock and both would supply me with one-offs. I will order the Earls' part 963306 with locking nuts 'O' ring and I will probably use a thin layer of PTFE tape to ensure a leak free seal. Thank you for the pictures which explains allot and thank you for your help and advice. Much appreciated.

Mark
 

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Brrrummm!
Joined
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317 Posts
Discussion Starter #10
For J and any R1200GS 2009 Mk.2 owners,

My project to add a gravity fed auxiliary fuel tank has been put on hold due to Mk.2s and probably MK.3s having all of the fuel pumps and electrical circuitry on the left hand side of the tank and no circuitry and access on the right hand side. It is always good to do an in depth survey. I also checked with my BMW dealer to confirm my findings.

But I have a cunning plan. There is one overflow tube from the neck of the filler cap which will remain untouched and a fuel vent tube from the top of the enclosed tank. With some bits and pieces and a marine fuel tank hand primer pump, I can pump the fuel up to the top of the tank through the vent tube with the fuel cap slightly open, and it should be good to go. I will do some external tests to measure the time taken to pump a liter of fuel, in this case, from a can into my Honda Rotary Mower. If it becomes very time consuming I'll have to think again. Thanks for your interest.

Mark
:thumbup:
 
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