Mugen MBX7
#2882
#2885
I have 2 questions regarding the tank and clutch.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
#2886
Tech Master
iTrader: (13)
I have 2 questions regarding the tank and clutch.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
#2887
Tech Adept
Gentlemen, I'm still battling a loose car. This past weekend, I saw a glimmer of hope as the track was wet for one round. While the car was not 100% planted, it was just loose enough that it was very fast. After that, back to feeling like I'm on ice.
I've done various things and it's getting there. Today I realized, why don't I just add wait in front of the rear suspension on the chassis? Have you guys done this by chance? Especially in low traction conditions?
I've done various things and it's getting there. Today I realized, why don't I just add wait in front of the rear suspension on the chassis? Have you guys done this by chance? Especially in low traction conditions?
#2888
Tech Elite
iTrader: (3)
Hello
I have 2 questions regarding the tank and clutch.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
Do you need to put the shim behind the cone before the flywheel? There seems to be a big gap between the flywheel and motor case, even without the shim there is a big gap. Coming from an 8ight, I didnt have to put a shim and the flywheel was very close to the case without it rubbing, I guess because the Losi flywheel has a lip behind it and the Mugen is flat.
I have a Nova 4BTTS.
Regarding the fuel tank, I installed the updated tank and its sitting pretty high off the chassis and there is a lot of side to side movement left/right. When I pull on the ring to open the lid, the entire tank moves towards the centre. Is this normal? I haven't screwed the screws in all the way.
From the pic, you can see there is a 5mm gap on the motor or clunk side of the tank.
the tank. I recommend putting a washer on the screw before you screw it in so it will hold more of the rubber gromment. Another thing is to use longer screws for the mounts from under the chassis It helps wiggle proof to some extent and keeps from stripping out the mounts too.
#2889
Gentlemen, I'm still battling a loose car. This past weekend, I saw a glimmer of hope as the track was wet for one round. While the car was not 100% planted, it was just loose enough that it was very fast. After that, back to feeling like I'm on ice.
I've done various things and it's getting there. Today I realized, why don't I just add wait in front of the rear suspension on the chassis? Have you guys done this by chance? Especially in low traction conditions?
I've done various things and it's getting there. Today I realized, why don't I just add wait in front of the rear suspension on the chassis? Have you guys done this by chance? Especially in low traction conditions?
#2890
#2891
Tech Adept
I think that's it. The biggest problem is that I've only had two short practice sessions since I've built the car. Rain has really been killing us down here. The next thing I intend to do is put X6 hubs on the rear to use the lower hinge pin hole.
Car lacks rear side-bite on-power/corner exit. I've made one change at a time and each of those listed seems to have made an improvement. I was just thinking that, since this car was designed to have so much of it's weight pushed forward, why not bring some back a bit.
#2892
Tech Adept
Chad Bradley wrote this somewhere in the thread:
"The more you run the car the more traction it will get (even without changing the setup). Cars that use CVA or CVD axles, are generally loose when the axles and outdrives are brand new. CVA or CVD joints are one of the most free axle types when they are brand new, as they wear in they create thier own bind which becomes traction because on throttle they will center up the chassis sooner out of a corner. If you were to put WD-40 or grease/oil on the axle pin and outdrive, trust me it will be looser than if it were dry. I do use grease in the cup of the axle, but I try not to ever put new axles or outdrives in, in the middle of a large event (I made that mistake before the mains at the roar nats in OKC, the car was very loose. One of the first races with the MBX5)"
Last edited by Bappen; 03-11-2013 at 08:39 PM. Reason: grammar
#2893
As of now, I moved the upper link to the outside hole in the rear. Moved the ackerman (sp?) forward. Went to full droop in the front to increase weight transfer. Turned the pistons taper down. Made minor right height changes in the rear to induce more pack and in the front to increase weight transfer to the rear while on-throttle.
I think that's it. The biggest problem is that I've only had two short practice sessions since I've built the car. Rain has really been killing us down here. The next thing I intend to do is put X6 hubs on the rear to use the lower hinge pin hole.
Car lacks rear side-bite on-power/corner exit. I've made one change at a time and each of those listed seems to have made an improvement. I was just thinking that, since this car was designed to have so much of it's weight pushed forward, why not bring some back a bit.
I think that's it. The biggest problem is that I've only had two short practice sessions since I've built the car. Rain has really been killing us down here. The next thing I intend to do is put X6 hubs on the rear to use the lower hinge pin hole.
Car lacks rear side-bite on-power/corner exit. I've made one change at a time and each of those listed seems to have made an improvement. I was just thinking that, since this car was designed to have so much of it's weight pushed forward, why not bring some back a bit.
1. THE RIGHT TIRE !
2. Softer swaybar
3. More rear toe in
4. Longer upper camber-links
5. Shorter wheelbase
6. Softer spring and/or lighter shock oil
7. More rear droop ( has a better effect on overall rear traction than increasing front droop)
8. Lighter rear diff oil....
What is your engine and clutch setup ?
Trying one or more of these settings in combination should solve, or at the very least alleviate the loose rear end. Also, keep in mind what Chad said a few pages back that the car will be loose when it's new and needs a small break in period.
#2894
Tech Adept
I think this is your main issue here... Two short sessions aren't enough.
Chad Bradley wrote this somewhere in the thread:
"The more you run the car the more traction it will get (even without changing the setup). Cars that use CVA or CVD axles, are generally loose when the axles and outdrives are brand new. CVA or CVD joints are one of the most free axle types when they are brand new, as they wear in they create thier own bind which becomes traction because on throttle they will center up the chassis sooner out of a corner. If you were to put WD-40 or grease/oil on the axle pin and outdrive, trust me it will be looser than if it were dry. I do use grease in the cup of the axle, but I try not to ever put new axles or outdrives in, in the middle of a large event (I made that mistake before the mains at the roar nats in OKC, the car was very loose. One of the first races with the MBX5)"
Chad Bradley wrote this somewhere in the thread:
"The more you run the car the more traction it will get (even without changing the setup). Cars that use CVA or CVD axles, are generally loose when the axles and outdrives are brand new. CVA or CVD joints are one of the most free axle types when they are brand new, as they wear in they create thier own bind which becomes traction because on throttle they will center up the chassis sooner out of a corner. If you were to put WD-40 or grease/oil on the axle pin and outdrive, trust me it will be looser than if it were dry. I do use grease in the cup of the axle, but I try not to ever put new axles or outdrives in, in the middle of a large event (I made that mistake before the mains at the roar nats in OKC, the car was very loose. One of the first races with the MBX5)"
#2895
Tech Adept
When you get a chance try the following, all of which increases rear traction. You should try each setting one at a time.
1. THE RIGHT TIRE !
2. Softer swaybar
3. More rear toe in
4. Longer upper camber-links
5. Shorter wheelbase
6. Softer spring and/or lighter shock oil
7. More rear droop ( has a better effect on overall rear traction than increasing front droop)
8. Lighter rear diff oil....
Trying one or more of these settings in combination should solve, or at the very least alleviate the loose rear end. Also, keep in mind what Chad said a few pages back that the car will be loose when it's new and needs a small break in period.
1. THE RIGHT TIRE !
2. Softer swaybar
3. More rear toe in
4. Longer upper camber-links
5. Shorter wheelbase
6. Softer spring and/or lighter shock oil
7. More rear droop ( has a better effect on overall rear traction than increasing front droop)
8. Lighter rear diff oil....
Trying one or more of these settings in combination should solve, or at the very least alleviate the loose rear end. Also, keep in mind what Chad said a few pages back that the car will be loose when it's new and needs a small break in period.