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What's the Best Rocket Motor? (Patreon)

Published:
2025-01-19 21:27:02
Imported:
2026-06

Content

Alrighty folks, time for a hotly debatable podcast episode. I've seen multiple requests for the best motor in x size in our chats recently.

In the comments, drop what you think is the best all-around commerical motor in each major size (29, 38, 54, 75/76 and 98) and give a brief explanation as to why you picked that motor.

This can be ANY brand that is currently in production. So, VMAX, AMW, Gorilla, Kosdon, etc. motors need not apply.

So, to clarify, this isn't necessarily YOUR favorite motor. but it might be anyway. Nominate what you think is the best commercial motor in the comments in this format, please:

29mm: (Motor choice, quick explanation as to why)
38mm: (Motor choice, quick explanation as to why)
54mm: (Motor choice, quick explanation as to why)
75mm: (Motor choice, quick explanation as to why)
98mm: (Motor choice, quick explanation as to why)



Comments

Ernesto

I have found my 54mm go to is the L 1000… no real reason except I felt like a grown up the first time I used it and the feeling remains!!!

Doug

I'll have to look at the others but the 38 mm is obviously the h283 super thunder DMS. It has fantastic thrust off the pad while maintaining a decent burn time so you can overbuild your level 1 attempt and not worry about the power. And it's also a super thunder. How awesome is that for your very first high-powered flight you're flying a super thunder propellant that's just cool. It kind of makes you never want to fly any other kind and so you just end up looking for super thunders and passing over everything else... It's also in the lower price category so people without a giant budget can afford to fly it

Jonathan Gaboury

For 29mm, I’m gonna say either G80 or H135. One is basically the biggest mid power motor and the H is perfect for L1. For 38, I have to pick 2 again with the H100 and the J350. Again the h100 is perfect for L1 and the J350 is an iconic motor that can also be used for L2. For 54, it’s got to be the K1103X. Just raw power and a lot of fun to see your rocket disappear into the sky. For 75, I don’t think there is a better motor than the M1297. It’s the perfect L3 motor and doesn’t require grain bonding. And for 98, I’m between the M1939 and M2500 but they are both great motor choices and if I were given the choice I would take the M2500.

Doug
>>161821059

Yeah Ernesto the l1000 is just kind of the l1000 and if you know you know

Neutronium

I'm going to limit this to motors that I have personally flown, so there might be some notable exceptions. 29mm: H399. It's a solid kick in the pants, lots of thrust and pretty much a full H impulse. The H226 is close, but the variability in CTI Skidmark means it doesn't make the top step. The I205 is another close contender, but I prefer the thrust of the H399 over the impulse bump of the I205. 38mm: I1299. It's the most visceral motor I've ever flown. It's crazy loud, the rocket teleports, what more do you want. It also has one of the prettiest flames of any motor, it's huge and has tons of mach diamonds with no smoke to obscure any of the detail. I do have some J510s that might dethrone it, but I haven't flown them yet. 54mm: K1103. Aerotech crammed as much anger in to a 54/1706 case as they could and it paid off. Tons of thrust, tons of impulse, it's just a hell of a motor. I've sent one to Mach 3 in a flying case rocket. Video of that flight here: https://youtu.be/G1RE70X_6oU The K2050 is the only other motor I've flown that comes close, and while it does have more thrust, in this case I actually prefer the impulse. 75mm: M2245. CTI crammed a full M into a 75mm case. That's pretty much all that needs to be said. My one flight with one was a failure, but I learned a lot, and if the simulations were correct it failed at around Mach 3.5. The greenish flame is also pretty cool, IMAX is definitely a unique propellant. I probably won't ever fly one again, just due to the cost. 98mm: Do I look like I'm made out of money to you? All of the really cool 98mm motors are just too damn expensive for me to justify paying for. The O5500, N5800, and O3400 all seem great, but I'll probably never fly one outside of a group project.

Upsrocketman

In 29mm it's the G64. There's just something about it that puts a smile on my face every time I see one and it's cheap to fly. For 38mm it has to be the I600. The way it throws a rocket off the pad is unbeatable and you know... big red flame. In 54mm the K1100 is top tier. It's such an iconic motor, and I would bet there have been more K1100's flown than almost any other motor in that case. In 75mm it's the M1297. There is no other motor that comes close to the ease of use for an L3 attempt. It's just enough to be awesome but not so much that you have to build a glass rocket to fly it. In 98mm it's the M1939. This was the first M motor I ever saw and it was mind blowing for 9 year old me.

Josh Sickles

I think the best motor is whatever one you have on the pad! Lol. There are to many good motors and even a bad motor can be good if you have a plan for it.

Jack Poehlman

The best motor is the one you can get your hands on! Period, end of story!

Jonathan rose

29:g80 because of the fact that it is the best non HPR motor+its a good amount of impulse for money 75: M685W-P because I like long burn white lightning. 98: N1000 because long burn N

Matt Poker

29mm- Gotta go with the G80 for this one. Anyone can fly it, and it's a heck of a little motor. 38mm goes to the Loki I405. It has such a killer thrust curve, and looks and sounds like a bigger motor. 54mm, I'm going with the K1103. A high impulse for the case size, and also good kick make it a fun motor.

Liam

29mm: G79-7W Fast burning hard hitting and the flame is wicked awesome. 38mm: I500 Fastburning hard hitting and I really just like high performance flights. 54mm: L1000 No good explication I just love this motor. 75mm: M2020 A very ticked motor that is out to get speed. 98mm: N5800 Because it is angery fast burning hard hitting and all around awesome.

Michael Grayless

29mm-G80, so versatile. You can flight it in a local park 38mm- J350 the perfect L2 motor, just enough to get you your cert, but still a good flight. 54mm-K1100, because it rips.

Kevin Turner

29mm H128, Class 1 HPR. 38mm I435, Good punch on an L1 motor. 54mm K1103X, Just phenomenal for a 4 grain 54mm motor. 75mm M1780, Good all around motor. cool flame, best price per newton second of all Aerotech reloads. 98mm M4500 for reliable bad... punch.

Andrew

29mm: Aerotech G75 Metalstorm. It’s a fun motor that packs a punch and looks great at sunset. Reasonable at a field in a saucer or in your favorite pro series kit. 38mm: You gotta love the classic J350, but the I600R takes the cake for me. Nothing beats a motor packing a big punch from the 100’ pads. 54mm: I swear red isn’t my go to propellant, but you can’t beat the K1275 in a beefy 5 or 6” Rocket for a low and slow flight. 75mm: The M1315W is is a classic and fan favorite. 98mm: the N4000W is a beast and certainly on my bucket list to fly

Peter Waithe

29mm: Aerotech G64. Fun motor for my LOC IV 38mm: Aerotech J350, it’s a classic and it hits hard at smaller launches 54mm: CTI J449, nice blue flame 75mm: Aerotech M1500 Mojave Green. Used this motor for my Level 3 certification flight in 2011

Brian Kelsay

I agree, the one you can get your hands on. H550 Super Thunder