800 planes per year need a new SLSA motor.
From pistons to turbines, we are filling the gap.
- RAISING $1,000,000
- Confidential · August 2026
- $1M for 20%
- Half development · Half production
- No founder salary from this raise
$1M raised from 13 investors · raising $1.7M more · several invested 2–3 times
Terms: $1M for 20% — $5M valuation
Pick Your Next Step
STEP 1 — JUST LOOKING
Get the 9-Page Briefing
The numbers, the valuation math, the five-year plan, and the risks — stated plainly. Read it on your own time. No calls unless you ask for one.
No pressure, no hammering sequence. I sell planes with facts — I do the same with this. Unsubscribe anytime.
STEP 2 — DIGGING IN
Sign the NDA, See the Data Room
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STEP 3 — READY TO INVEST
Already Sure? Let’s Confirm It.
You know you’re in and just want to make sure. Pick your amount — I’ll call you the same day, we verify accreditation (free options), and the SAFE arrives by DocuSign.
$200K+? Verification is a one-page letter. Under $200K: free third-party verification — I never see your documents.
Jethrow Engines LLC
GA still flies on 1930s engine architecture.
The client deck frames the opportunity around outdated ignition, carburetor-ice risk, limited redundancy in experimental installations, and a large reliability gap versus turbine engines.
1930s
Magneto-era ignition architecture
~250
Carburetor-ice accidents cited over 12 years
12.7
Lycoming failures per 100,000 hours in the deck
0.15
PT6 turbine failures per 100,000 hours in the deck
Why Now
MOSAIC just removed the barrier.
Before
Traditional certification economics
- FAA type certificate required
- $20M–$50M, 10–15 years
- Innovation economically difficult
Now — 14 CFR Part 22
ASTM route for S-LSA
- No type certificate needed for S-LSA
- ASTM F2339 piston
- ASTM F3845 turbine engines
- No horsepower limit. No weight limit.
What We Are Building
Two engines. Both first of their kind.
Piston — Already Flying
$37K–$50K
300–425 HP
Half the price of a factory-new Lycoming or Continental — with dual everything as standard, not as options.
Turbine Turboprop
<$250K
300–500 SHP
This is in a lightly served power band, with a new, warranted and factory-supported target product. The Veloce Twin will be its already-existing market.
Not Renderings
Both piston engines already exist.
Naturally aspirated
Installed in the airframe, cowling off, with over 40 flight hours and already performing wonderfully.
Turbocharged
On the engine dyno stand. No one else offers a turbo LS/LT in this configuration, and we do it at less weight than a six-cylinder Lycoming or Continental.
Reliability
The first piston aircraft engine with no single point of failure.
2× Dual ECU
Either unit runs the engine alone.
2× Dual sensors
The deck identifies sensors as a common real failure point.
2× Dual fuel systems
The deck states fuel causes 27% of engine failures.
2× Dual ignition
Electronic. No magnetos, no AD inspections.
The Numbers
Where the reliability gap sits
Mechanical failures per 100,000 flight hours, as presented in the client pitch deck.
Jabiru
Rotax
Continental
Lycoming
Veloce Piston (est.)*
FAA target
Veloce Turbine (est.)*
PT6 turbine
32.1
15.6
13.4
12.7
9.0
4.5
3.5
0.15
*The uploaded Jethrow deck itself labels these two estimated rows “Veloce Piston” and “Veloce Turbine.” Confirm final naming with the client before launch.
Price
Half the price — and no core engine required.
Engine
HP
Exchange
Core
No-core total
Continental IO-550-N55
310
$71,831
100%
$93,831
Lycoming IO-540-K1G5
300
$125,109
~70%
$161,109
Continental TSIO-550-K1
315
$125,484
~70%
$161,484
Lycoming AEIO-580-B1A
315
$137,686
~70%
$172,686
JETHROW
300–425
No core needed
$37K–$50K
Table values follow the uploaded deck, which cites Air Power Inc., Aug 2026.
The Turbine
Nobody sells a new turboprop this size for this price.
300–500 SHP
The target power band for the new turboprop.
<$250,000
New. Warranted. Factory-supported.
At 500 HP the buyer is not replacing a Lycoming. He is buying power no piston can give him.
The Team
Nine people. Four disciplines.
1
Program lead — Oxford-trained, single point of accountability
2
Turbine expert + one graduate student
3
Combustion expert + one graduate student
4
Rotary expert + one graduate student
The Plan
Start from proven. Add what nobody has — Hybrid.
1
Start with a patent-expired engine
The thermodynamics and failure modes are already proven.
2
Add the hybrid mechanism and dual architecture
The contribution is the redundancy layer the deck says nobody ships.
3
Qualify to ASTM, not FAA type certification
Statement of compliance; years and millions removed from the path described in the deck.
4
Go into production
Half the raise is production capital, not development.
Use of Funds
$1,000,000 — half of it is production.
$500K
Engineering & development
The full nine-person team to a running engine.
$500K
Production
Tooling, first run and inventory.
No founder salary is drawn from this raise. AeroVolare engine work also sits in the same budget.
De-Risking
What you're going to ask.
“Others promised this and never delivered.”
The founder’s prior FDA-clearance experience and the new MOSAIC Part 22 framework solve this.
“Small turbines burn twice the fuel.”
The 500 HP use case is about performance, not efficiency, and the demand changes the fuel-cost decision for many.
“Others already sell LS conversions.”
Yes, but they do it with a heavier V8 that is not turbocharged. We also have redundant dual-channel architecture, ASTM qualification and factory support.
“A field overhaul of a Lycoming is $50,000. You’re not cheaper.”
Yes, but that price requires a core. A field overhaul assumes an existing run-out core, while a new aircraft does not have one.
Demand
We are our own first customer — Veloce Planes.
$16M
Signed orders with deposits
38 planes and kits sold. 8 flying. The deck states every one needs an engine currently bought from someone else.
Production
- AeroVolare engines, in this company
- Experimental amateur-built aircraft in the U.S.
- S-LSA manufacturers under MOSAIC
- Expanded addressable fleet cited by the deck
An engine company that starts with a captive order book is a different risk than one starting with a prototype.
The Ask
$1,000,000
for 20%
Half builds the turbine turboprop engine. Half builds the line that makes it.
✓ Regulatory window open — Part 22
✓ Captive first customer — $16M Veloce order book
✓ Team assembled — nine people
✓ Two first-of-their-kind engines
Jamie Fettig · Jethrow Engines LLC · 773-902-0969 · www.veloceplanes.com/engine
Investor-facing factual claims, regulatory statements, pricing comparisons and investment terms in this mockup are taken from the client-supplied materials and have not been independently verified. Confirm final wording, naming, legal disclosures and securities compliance with the client/counsel before publishing.
Investor Questions
Questions the deck already answers.
What makes the piston engine different?
Dual ECU, dual sensors, dual fuel systems and dual electronic ignition, with the target of eliminating a single point of failure.
Why is the price comparison different from an overhaul?
The client deck distinguishes an overhaul that requires an existing core from a new-aircraft buyer who has no run-out core to exchange.
Why is now the timing window?
The deck attributes the timing to MOSAIC / Part 22 and ASTM standards, which it says materially change the certification economics for S-LSA.
Where does the $1M go?
$500K to engineering and development and $500K to production, according to the client deck.
Can I see the team details?
The deck says names and CVs are available under NDA.
Pick Your Next Step
STEP 1 — JUST LOOKING
Get the 9-Page Briefing
The numbers, the valuation math, the five-year plan, and the risks — stated plainly. Read it on your own time. No calls unless you ask for one.
No pressure, no hammering sequence. I sell planes with facts — I do the same with this. Unsubscribe anytime.
STEP 2 — DIGGING IN
Sign the NDA, See the Data Room
Already know you want the real look? Fill this out and our mutual NDA arrives by DocuSign. The moment you sign: order book, deposits, financial model — the light data room.
Mutual NDA — it protects you too. NDA emailed to you automatically.
STEP 3 — READY TO INVEST
Already Sure? Let’s Confirm It.
You know you’re in and just want to make sure. Pick your amount — I’ll call you the same day, we verify accreditation (free options), and the SAFE arrives by DocuSign.
$200K+? Verification is a one-page letter. Under $200K: free third-party verification — I never see your documents.