Go Engine USA 2011 Thread
#1351
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
#1352
How long do you sit in the pit being fuelled ??? LOL I'll film a fuel stop for ya if I can, We always and my pit man always fills me rite to the top and snaps the lid shut as dropping the car into pit lane, think of your bottom end as a nozzle on a hose that is set correctly, turn on the hose tap and the flow throu the nozzle should be the same, also have your pressure line longer than your fuel line helps absorb the extra pressure as you snap the lid shut.
#1353
Joined: Dec 2009
Posts: 7,916
From: northern michigan
One problem I see with your theory, our engines are not fed by a gravity tank for there to be any pouring involved. On a motocross bike the tank is above the motor and fuel line goes down as with the fuel so air needs in so it doesn't vapor lock like you describe.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.i agree! but i think alot of guys look out of the box...per say, like i do. weather im right or your right, i think its great that guys can make or give there opinion here without a big agruement like most threads ive seen. just makeing assumptions here, but still lov'in the GX5R...
, never a problem for me. and if there is i can come here and get the problem solved in minutes!!
#1354
How long do you sit in the pit being fuelled ??? LOL I'll film a fuel stop for ya if I can, We always and my pit man always fills me rite to the top and snaps the lid shut as dropping the car into pit lane, think of your bottom end as a nozzle on a hose that is set correctly, turn on the hose tap and the flow throu the nozzle should be the same, also have your pressure line longer than your fuel line helps absorb the extra pressure as you snap the lid shut.
...i dont find it an issue at all for me...i just make sure its running while bieng fueled and clear it out right before i get dropped
#1355
One problem I see with your theory, our engines are not fed by a gravity tank for there to be any pouring involved. On a motocross bike the tank is above the motor and fuel line goes down as with the fuel so air needs in so it doesn't vapor lock like you describe.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
....JUST KIDDING!....for real..just a joke
....yup, pressure line=fuel pump
#1356
Joined: Dec 2009
Posts: 7,916
From: northern michigan
#1358
hi flanno,
thanks for the tip...
will follow the GO Tech TIp on break-in
http://go-racing.vpweb.co.nz/Tech-Tips.html
Also, is the 2072 tough? I had a 0801 pipe and after some time the stinger is not very strong and dented.
Thanks,
thanks for the tip...
will follow the GO Tech TIp on break-in http://go-racing.vpweb.co.nz/Tech-Tips.html
Also, is the 2072 tough? I had a 0801 pipe and after some time the stinger is not very strong and dented.
Thanks,
#1359
#1360
hi flanno,
thanks for the tip...
will follow the GO Tech TIp on break-in
http://go-racing.vpweb.co.nz/Tech-Tips.html
Also, is the 2072 tough? I had a 0801 pipe and after some time the stinger is not very strong and dented.
Thanks,
thanks for the tip...
will follow the GO Tech TIp on break-in http://go-racing.vpweb.co.nz/Tech-Tips.html
Also, is the 2072 tough? I had a 0801 pipe and after some time the stinger is not very strong and dented.
Thanks,

The other 2 pipes you have in your signature will work well for certain tracks/conditions too, but the 2072 is the best suited to the GX and GXII for all-round performance without having to keep changing pipes to get a certain result.
#1361
using 2047 on Stock v-spec is also very good.. my ride during a race here in PHIL which i won in B-Main. Imagine a V-spec that high on the losi, the GXII would be level with the body
Last edited by jnc011994; 04-28-2011 at 11:05 PM.
#1364
One problem I see with your theory, our engines are not fed by a gravity tank for there to be any pouring involved. On a motocross bike the tank is above the motor and fuel line goes down as with the fuel so air needs in so it doesn't vapor lock like you describe.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
On a nitro RC the fuel pick up is well below the inlet to the carb. So for the fuel to go up hill and threw all the twists and turns some ppl have it needs a pressure to push it. Hence the pressure line. If you had no pressure line the motor does not have any suction so it gets no fuel. And sine the pickup is below the carb gravity is factored out. Why do you think air leaks cause tunic issues? Extra air is getting in and and tank pressure is reduced so you ge less fuel to the motor. The pressure line is basically a simple fuel pump on these cars.
It's nice to have a civil debateabout our opinions online for once.
no name calling or what not.
#1365



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