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Post by Deleted on Mar 22, 2011 13:16:51 GMT
Is everybody fitting Swirl Tanks? I hadn't considered this I have to say, how many fuel pumps are going to be needed for this? Will the performance be really affected in corners if I don't fit a swirl tank?
My engine is non fuel injected a 5jj so im not sure if I need a Swirl Pot. I don't intend to track my Tr1Ke, just use on the road and race everyone on the road :-)
Cheers
Nick
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Post by roadtrackrace on Mar 22, 2011 14:34:00 GMT
Swirl pots are not needed but given that the fuel talk is no longer sat above the engine, a bit of hard cornering on a quarter of a tank can soon see fuel starvation when you try to nail the throttle again.
A swirl pot means that you have a constant flow of fuel until the tank is running on fumes.
We simply use an extra R1 fuel pump to match that of the donor bike and these are so readily available 2nd hand it won't break the bak to fit one.
RTR
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Post by Deleted on Mar 22, 2011 15:11:15 GMT
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vtR1k
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Post by vtR1k on Mar 23, 2011 9:48:25 GMT
I just love you guys! I also ordered 2 of them and will make the swirlpot/fuelpumptank myself. I have the ability to weld aluminium since yesterday so if you are in need of special parts, I can now make them (reasonably priced  ) |
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Post by anglais on Mar 23, 2011 11:51:48 GMT
How much for a swirl pot for me??? pm me if you want, need a couple of other things also
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vtR1k
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I'm a trike lover...
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Post by vtR1k on Mar 23, 2011 19:55:22 GMT
pm sent
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vtR1k
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I'm a trike lover...
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Post by vtR1k on Mar 24, 2011 9:18:54 GMT
Here a diagram for the fuel system of a carburettor type. The "secret" is to keep the swirl tank topped up all the time, also when the engine is not running. This way the original pump can never run dry. It's the best for the pump and the engine. So the swirl tank must be mounted in a way that it can't drain completely. Almost forgot to mention: P1 must have a capacity that is equal or larger then Pr! If needed, a fuel cooler can be installed in the line between Pr and E. For cars it is almost needed nowadays but I don't know how high the return-fuel temperature will become for a motorcycle. The unneeded fuel returns to the swirl tank but it is heated up by the engine temperature first, you see? And the cooler the fuel, the higher the power ;D ! Do not forget the breather line on top of the tanks. These will prevent the tanks from beeing vacumized. Otherwise, the fuel will not reach the engine after a while. First, it starts running poorly after a few miles and finally will stall... In the breather line a spring loaded non-return valve must be mounted to prevent escaping of fuel and fuel vapours. Also, a little filter or strainer can't do any harm, but that is personal. Breather: www.demon-tweeks.co.uk/Motorcycle/Tuning/Fuel_Accessories/Mocal_In_Tank_Breather_Valve/1781/0/23338Nice little filter: www.demon-tweeks.co.uk/Motorcycle/Tuning/Fuel_Accessories/BikeIt_Alloy_Fuel_Filters/1781/8563 |
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Post by anglais on Mar 24, 2011 11:20:52 GMT
Thats a great diagram, very helpfull,
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Post by edwinwl on Mar 24, 2011 11:45:47 GMT
I think we have reached the point we need to ask the moderators of this forum to change your nickname from "vtR1k" into: "mister Swirl-tank"....
;D
(thank you for the drawing)
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vtR1k
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I'm a trike lover...
Posts: 398
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Post by vtR1k on Mar 26, 2011 8:36:44 GMT
lol! too much honour...
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Post by edwinwl on Apr 25, 2011 13:01:28 GMT
Question:
Does the carburetor R1 engine have a fuel return line?
(Don't think so..)
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Post by anglais on Apr 26, 2011 18:14:50 GMT
Nope it does not,
The way im about to do this is take the overflow from the swirl pot back into the far side tank, and put one breather on the tank close to the swirl pot. will have to blank off one of the outflows on the swril pot. But should sort all the problems
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Post by edwinwl on Apr 26, 2011 18:30:43 GMT
So for carburetor R1 engines: NOT this one:  BUT this one: Of course the swirl tank is positioned higher than the fuel tanks. The air intake is positioned at the highest point in the fuel system.  |
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Post by anglais on Apr 26, 2011 20:54:57 GMT
im most probally wrong, but i think the top of the swirl tank should be the overflow back into the tanks and not a breather!
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Post by edwinwl on Apr 27, 2011 6:16:37 GMT
Perhaps this way the swirltank has a bit less fuel is store. With half an liter in store you still can make at least 5 kilometers.
But this way:
- you are using all connections
- only two T-joints
- only one breather
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