Don't you still use the spine of the frame as the airbox on your FCR or do you have something different? Surely it would be easier to make a tank fit into the space around the rear shock somewhere?
Joined Nov 2001
17K Posts | 774+
Ely, England
Brad
you must have missed this one. so did everyone else for over a week...
belmouth fitted and bored to 41mm carb
first to try it again!
i've had an underseat tank for some while sat here. never used it!
regards
Taffy
you must have missed this one. so did everyone else for over a week...
belmouth fitted and bored to 41mm carb
first to try it again!
i've had an underseat tank for some while sat here. never used it!
regards
Taffy
Taffy, where would you put the gasoline in the frame?
The gasoline obviously has to be higher than the carburetor. If the upper portion is filled and therefore heavier than the lower, wouldn't there be any structural weakness? How would you limit how low the gasoline would go? How would you make sure you do not have any old gas in the tube?
Lots of questions...
The gasoline obviously has to be higher than the carburetor. If the upper portion is filled and therefore heavier than the lower, wouldn't there be any structural weakness? How would you limit how low the gasoline would go? How would you make sure you do not have any old gas in the tube?
Lots of questions...
Joined Oct 2004
1K Posts | 14+
nova scotia
Lefrog,
Taffy means (I think) that you just use the top section of the frame(the square part) for a fuel cell.Its all above the carb so gravity feed would work fine.Not sure how you would seal both ends or where the best place would be to fill it.But with his new carb arrangement with a bell mouth and airbox/filter behind the carb it leaves the old air intake in the frame open to new applications.
If anyone is going to be willing to break new ground it will be Taffy...you know it!
Taffy means (I think) that you just use the top section of the frame(the square part) for a fuel cell.Its all above the carb so gravity feed would work fine.Not sure how you would seal both ends or where the best place would be to fill it.But with his new carb arrangement with a bell mouth and airbox/filter behind the carb it leaves the old air intake in the frame open to new applications.
If anyone is going to be willing to break new ground it will be Taffy...you know it!
Sorry Taff, point taken. Using the frame for fuel sounds like a good use if you don't need it for air.
You will need two hose barbs - an air vent and a fuel in/out.
The air vent only needs to be about 3/16"Ø drilled into the very top of the frame spar and could be teed into the air vent hose off the main tank cap.
The bottom one can go on whatever you make up to fill the old air outlet hole so you won't have to cut up the frame there. Ideally it would be as big as possible so the fuel can run into the frame quickly when you fill the tank. Could you get a fuel **** off another bike (I think TT600s had them but probably lots do) that has a second hose barb that was meant to take fuel from the opposite side of the tank as reserve but instead connect it to the frame spar tank. That would give you a **** on both tanks with the frame spar being a nice 2 litre reserve. Alternately it could be teed off the main outlet hose from the 'berg fuel **** but with this arrangement but you won't have a **** on the frame spar tank at all?
One thing you might have a problem with - how hot does the frame spar get above the engine up under the tank. Would fuel in it boil? Cripes if it does get hot enough to boil fuel then how crappy is it to suck heated air into the engine thru it? I assume that is part the reason for your induction system change in the first place. :?:
You will need two hose barbs - an air vent and a fuel in/out.
The air vent only needs to be about 3/16"Ø drilled into the very top of the frame spar and could be teed into the air vent hose off the main tank cap.
The bottom one can go on whatever you make up to fill the old air outlet hole so you won't have to cut up the frame there. Ideally it would be as big as possible so the fuel can run into the frame quickly when you fill the tank. Could you get a fuel **** off another bike (I think TT600s had them but probably lots do) that has a second hose barb that was meant to take fuel from the opposite side of the tank as reserve but instead connect it to the frame spar tank. That would give you a **** on both tanks with the frame spar being a nice 2 litre reserve. Alternately it could be teed off the main outlet hose from the 'berg fuel **** but with this arrangement but you won't have a **** on the frame spar tank at all?
One thing you might have a problem with - how hot does the frame spar get above the engine up under the tank. Would fuel in it boil? Cripes if it does get hot enough to boil fuel then how crappy is it to suck heated air into the engine thru it? I assume that is part the reason for your induction system change in the first place. :?:
Joined Nov 2001
17K Posts | 774+
Ely, England
brad
hadn't thought about the hot fuel. i don't think any of us really knows the effect of hot fuel. i believe that it emulsifies quicker because i can still remember the 'tape' shown to me when i did my apprenticeship as a mechanic. it showed how on cold days fuel just sat in globules and the car ( amk 1 cortina!) wouldn't start.
if the highest point is the fuel tank then i can fill here. all i need is a vent from the frame as you say. it will take sometime to fill i imagine.
need to weld the frame breather, the bottom and top entry from the old air filter set up and i need an exit point. i may consider a simple pipe arrangement innitially with an inline tap. the fuel should meet the main fuel line and T-in.
what with the auxillary adding 2 litres and the frame 2 more, i could end up the only guy who didn't need or want a big tank - having a big set of tanks!!!! now that i find really funny - suits my sense of humour that! :twisted: :twisted: :twisted:
it's just a pipe dream at the minute but
1) i need the frame stoved as it's chipped everywhere
2) i need to rebuild the engine with some new bearings
3) i have an order in for an '04 frame from DCR so if it doesn't work - well i was changing frames anyway!
doesn't all this tell you which way it's going?
regards
Taffy
PS-and don't say "**** up!" :lol: :lol:
hadn't thought about the hot fuel. i don't think any of us really knows the effect of hot fuel. i believe that it emulsifies quicker because i can still remember the 'tape' shown to me when i did my apprenticeship as a mechanic. it showed how on cold days fuel just sat in globules and the car ( amk 1 cortina!) wouldn't start.
if the highest point is the fuel tank then i can fill here. all i need is a vent from the frame as you say. it will take sometime to fill i imagine.
need to weld the frame breather, the bottom and top entry from the old air filter set up and i need an exit point. i may consider a simple pipe arrangement innitially with an inline tap. the fuel should meet the main fuel line and T-in.
what with the auxillary adding 2 litres and the frame 2 more, i could end up the only guy who didn't need or want a big tank - having a big set of tanks!!!! now that i find really funny - suits my sense of humour that! :twisted: :twisted: :twisted:
it's just a pipe dream at the minute but
1) i need the frame stoved as it's chipped everywhere
2) i need to rebuild the engine with some new bearings
3) i have an order in for an '04 frame from DCR so if it doesn't work - well i was changing frames anyway!
doesn't all this tell you which way it's going?
regards
Taffy
PS-and don't say "**** up!" :lol: :lol:
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