Rocket hovers above pad.

[LordOfMinecraft99]

Hi, I am playing 1.3 with Sigma Dimensions scaled up to 6.4, a load of part mods, mechjeb, Real Fuels, and a bunch of part mods. My rocket won't lift off from the pad, despite the thrust:

 This is not a new problem for me......

[qzgy]

I know you have a TWR of 1.2, which should be enough. Maybe try more?

[LordOfMinecraft99]

41 minutes ago, qzgy said:

I know you have a TWR of 1.2, which should be enough. Maybe try more?

It's a glitch. I tried staging, with Ullage motors that had a 6.1 TWR, and they didn't move either.

[genericeventhandler]

One of your part mods is out of date with the version that you are playing,  it's got infinite drag. 

Try launching every single par attached to a small solid rocket booster to figure out which one is causing the problem. 

I had one pod that was doing just this,  the version I was using was 1.0.5 on a 1.2.2 install. 

 

[LordOfMinecraft99]

2 hours ago, genericeventhandler said:

One of your part mods is out of date with the version that you are playing,  it's got infinite drag. 

Try launching every single par attached to a small solid rocket booster to figure out which one is causing the problem. 

I had one pod that was doing just this,  the version I was using was 1.0.5 on a 1.2.2 install. 

 

Every part mod is up-to-date

[Bornholio]

5 minutes ago, LordOfMinecraft99 said:

Every part mod is up-to-date

This is usually caused by a tweakscaled part that ends up with negative mass. Usually a fuel tank because of interaction with real fuels

[LordOfMinecraft99]

Just now, Bornholio said:

This is usually caused by a tweakscaled part that ends up with negative mass. Usually a fuel tank because of interaction with real fuels

Ah. How do I solve it?

[Bornholio]

Just now, LordOfMinecraft99 said:

Ah. How do I solve it?

Easy way is to never tweakscale tank .

Hard way is carefully check each time you edit parts that they don't go negative basemass. 

I only use tweakscale with structural on the RO/RP-0 games, sometimes carefully with fins.

[LordOfMinecraft99]

3 minutes ago, Bornholio said:

Easy way is to never tweakscale tank .

Hard way is carefully check each time you edit parts that they don't go negative basemass. 

I only use tweakscale with structural on the RO/RP-0 games, sometimes carefully with fins.

with Procedural Parts, i guess I could do that. But normal fuel tanks look much nicer..... I am using SMURFF, does that change anything?

[Bornholio]

Just now, LordOfMinecraft99 said:

with Procedural Parts, i guess I could do that. But normal fuel tanks look much nicer..... I am using SMURFF, does that change anything?

yes, anything that adjusts basemass will.  If you are using Realfuels i would not use SMURFF

[LordOfMinecraft99]

2 hours ago, Bornholio said:

yes, anything that adjusts basemass will.  If you are using Realfuels i would not use SMURFF

Is there any other way to lower mass?  SMURFF makes the game a lot more fun and easy.

[Bornholio]

1 minute ago, LordOfMinecraft99 said:

Is there any other way to lower mass?  SMURFF makes the game a lot more fun and easy.

Real fuels lowers Basemass using a good method, so does SMURFF so its like double dipping. You can do it but its unrealistically light at that point.  You can toss on a mod that multiples all the ISP's

Come over to the x10 RSS dark side, getting to orbit is hard. 

[LordOfMinecraft99]

Just now, Bornholio said:

Real fuels lowers Basemass using a good method, so does SMURFF so its like double dipping. You can do it but its unrealistically light at that point.  You can toss on a mod that multiples all the ISP's

Come over to the x10 RSS dark side, getting to orbit is hard. 

I used to play RO, but I didn't have time, so I switched to 6.4k. My RF configs are the Stockalike ones, so the weight is not decreased.