As it happens, in our current campaign, the PCs have recently found their old ship again, only to find that their mad medical droid is now using it to run a free clinic on Nar Shadaa and has sold off the engines to pay for expenses.

As we don't have access to FO just yet, on account of being damned dirty europeans, I was wondering if those who do could give us some ballpark numbers for buying replacements and the time and difficulty for installing them? If it's relevant it's a Ghtroc 720 (Sil 4, Spd 3, Handling -2, SST 28).

The Ghtroc has a HTT of 28 and a SST of 15.

There isn't a good match, but probably the closest would be the Fusial Thrust Engine. If you have your own engineer that can make a 3 difficulty check for a mod, then for 6000 credits you are back up and running with a net change of +1 SST. If you don't have an engineer, or don't want to risk the roll you could buy it outright for around 7500 credits. But technically, this would cost you a HP for reasons.

In order to not cost a HP you would be looking at a Single Ion Coil, 1000 credits to buy basic, 500 credits and 1D to make in 24 hours. That would give you speed 1, a SST of 12, and sheilds of 0/0. The engines are modifiable, at 1000 credits a pop if you do it or 1000 credits + 500 x difficulty to buy. They include 3 +1 speed mods and 3 increase SST by silhouette mods. When building the engine, or having it built custom, 3 advantage will gain you 1/1, 0/2, or 2/0 shields, and 2 advantage can give +1 speed to a max of 6 (Pre-mods by my reading of the rules, but I haven't heard back from FFG on it yet.)

So, all things considered you could buy an engine for 1000 + 3000 (1000 x advantage needed as my estimate of what a mechanic would charge) + 2000 (+1 speed 1000 x advantage) for the basic engine + 2000 for two mods + 3500 for the mod labor (1 roll at 3 difficulty for 1500 for +1 speed and one roll at 4 difficulty for 2000 for +4 SST). Resulting in a total cost around 11,500 credits. Your guess is as good as mine for installation costs. I think 1000 or 2000 x HP sounds right for another 2000 or 4000. That would get your ship speed 3, shields 1/1, and SST of 16. And it would have 2+1 speed mods and 2 +4 SST mods left that could be used, although you would be starting at 5 difficulty for those.

I should add, that by the book, the assembly takes a daunting (4 difficulty) check and costs 25K credits. Installing new engines shouldn't be that much IMO, but it's what's in the book.

58 minutes ago, Ahrimon said:

The Ghtroc has a HTT of 28 and a SST of 15.

D'oh. Of course. Mixed up the numbers.

When selling crafting stuff you get material cost +50% for commissioned items and +5% per advantage spent.

So... 650 extra?

3 minutes ago, Ahrimon said:

I should add, that by the book, the assembly takes a daunting (4 difficulty) check and costs 25K credits. Installing new engines shouldn't be that much IMO, but it's what's in the book.

Cool. How long would it take?

5 minutes ago, penpenpen said:

Cool. How long would it take?

10 days (240 hours) and a team of 5 people.

7 minutes ago, penpenpen said:

D'oh. Of course. Mixed up the numbers.

When selling crafting stuff you get material cost +50% for commissioned items and +5% per advantage spent.

So... 650 extra?

Ah, I was unfamiliar with that section. I think it's meant to apply more for PC's selling things which is always much less than a PC buying things, but it works as a starting point. I would say that you should limit how much advantage can be spent. Spending advantage/triumph under these costs are WAY cheaper than modding items later on by close to a factor of 10. I've limited this breakdown to 5 advantages. Using that table, the Single Ion Coil would cost:
500 Base Cost
250 50% commission
125 5 advantages at 5% each (+1 speed, and 1/1 sheilds)
3000 +1 Speed Mod
4000 +4 SST Mod
7825 Total cost for the engine

If you had no cap for the number of advantages or triumphs you could add the second +1 speed for 50 credits and the +4 SST for 200 credits (2 adv or 1 triumph, 10% base cost or 50 credits per +1 SST). Ironically the 1/1 shields could be added for 50 credits instead of 75 by using a triumph instead of an advantage.

Personally, I think the base price of the engines is ridiculously low. 500 x Silhouette would have been more appropriate IMO.

On 2018-04-05 at 2:14 PM, Ahrimon said:

I should add, that by the book, the assembly takes a daunting (4 difficulty) check and costs 25K credits. Installing new engines shouldn't be that much IMO, but it's what's in the book.

The assembly should only be for a complete rebuild imho. I don’t know the ruling per RAW as it is not explicit.

1 hour ago, Khazadune said:

The assembly should only be for a complete rebuild imho. I don’t know the ruling per RAW as it is not explicit.

Unfortunately, it is. Page 79 in the "Replacing core components in existing vessels" sidebar. "In this case the, the character uses the existing vehicle's profile as the frame, and replaces the engine and/or hull with the appropriate attachments, each of which replaces the listed elements of the craft as usual. The PC then makes the check from Step 4: Assembly, using the difficulty, time, and additional costs dictated by the craft's silhouette."

I can't say that I agree, but it's what's in the book.

3 hours ago, Ahrimon said:

Unfortunately, it is. Page 79 in the "Replacing core components in existing vessels" sidebar. "In this case the, the character uses the existing vehicle's profile as the frame, and replaces the engine and/or hull with the appropriate attachments, each of which replaces the listed elements of the craft as usual. The PC then makes the check from Step 4: Assembly, using the difficulty, time, and additional costs dictated by the craft's silhouette."

I can't say that I agree, but it's what's in the book.

Oops, I missed that, looks like I’ll have to re-evaluate my builds. Thanks for the heads up.

On 4/5/2018 at 1:09 PM, Ahrimon said:

There isn't a good match, but probably the closest would be the Fusial Thrust Engine. .

Your "closest match" is the engine intended for starfighters. Yet another example of how the FO ship crafting rules really stink.

On 4/6/2018 at 9:03 PM, HappyDaze said:

Your "closest match" is the engine intended for starfighters. Yet another example of how the FO ship crafting rules really stink.

I agree with you, but the RAW does let me build my dream ship by replacing the hull on an ir-3f light frigate and adding a hyperdrive sp they're not COMPLETELY worthless.