How To Distinguish Low, Med, high Lift Props Fast Electric RC Boat Propeller Identification

In this video I show the differences in low medium and high lift props I also identify each part of the propeller and what it does to the boat while you're running. I use a GPS to record each speed from each propeller type and it's characteristic. I Did my best to show the boat in the water with each propeller. It's really a hard topic to explain and it's even harder to video the boat with each propeller and what it does, I tried
I'm not a professional, just my personal experiences with props and what I've learned over the years. I hope this helped you guys out with your hobby don't forget to like, comment, and subscribe to channel IRONCLAD RC tinker test, tune, everything
prop cutting info I found that maybe useful:
rcraceboat.com/...
mad_lizard# KZbin channel prop talk video:
• A word on Rc Boat Prop...
where to buy props
www.offshoreel...

[@Livlifetaistdeth]

I have been running rc boats and watching rc videos on KZbin for years. I just learned more useful information from your channel in 3 minutes than I've learned from all the other boat videos I've watched. Thank you.

[@rnclucas]

Dude… you are a professional!

[@mad_lizard]

Awesome video and explaining some of the differences on the hi and low lift props.

[@jmoe2060]

That was great. It's one thing to have knowledge but quite another to effectively share it with others. Well done.

[@Dokroc78]

After watching all your Blackjack 24 videos and seeing all the fun you've been having with it convinced me to order one.

[@tommymatherne2673]

Big B! Ive learned more from your vids than any other channel ive watched since gettin into boats last month! Keep turnin em out n ill keep watchin!!

[@rickbarg3980]

Very informative video,who knew there was so much to know about props,but it all makes sense,great job.

[@beezomaticful]

Beg pardon. I didnt watch further beyond the break before my first comment. Keep it up! Im learning a bunch as i have recently subscribed.

[@norcalrc]

Thanks bro. That’s alot of great info along with actual run footage. I think I need to pick up a few props and test them like you did , under controlled platform in same water condition s

[@IRONCLADRC]

You can really learn alot by running different props back to back. I love doing prop changes 1 may run tip top and the next run like sh#t. Lol.

[@marknickells6097]

From my past. My first real Hydro was was the Dumas , Drag N' Fly 20. IT was basically an experiment from beginning to end. THE DIRECTIONS were basically worthless after the initial build, and didn't even specify prop ( suggestions) , or prop depth or angle. AS built, we guessed, and we were wrong. THE boat , ran raked up, and was was too high, and sponson to thrust was only 1 and quarter inches,. ALL it did was bound up, and cavitate. Garbage. Next season, we broke the epoxy , and lowered the stuffing tube to almost 1 and 3 quarters of an inch. The boat planed, but still cavitated. THE people at the hobby shop. couldn't figure out what to do. Part of it was trying to figure out THE CORRECT prop . Submerged, or surface running. Bigger , or smaller diameter. IN the end, we settled on an Octura 1440. The Boat ran for about 3 years, and after the fiasco of up grading the Mill to a K& B 3.5 inboard, it never ran consistently after wards . WHEN the motor ran, it was a quick ride, close to 30. IT"S one boat, I wish , I had kept. IT would have been a good performer on electric. I have video from our second season, if any one would like to see it in action. Back to your videos. Stellar. AND , great explanation on prop dynamics. Have you run any of the Prather props? Thanks again , for your great videos.

[@IRONCLADRC]

Yes sir I had quite a few pranter props over the years. Proping out a boat is like a black art takes a while to figure it out, and once you think you've got it licked, boom hits you with another curve ball!

[@simonjandrell5897]

thankyou this has puzzled me for years

[@EmilWilkensRC]

Hi buddy! Great video, we need information on these things out ! I’m not sure that everyone defines “prop lift” in the same way. Some (including me) refer to lift as the lift produced by the prop, effectivly acting as transom lift. Lifting the transom will have the bow / front of the boat come down, thereby reversing your L/M/H classification. Also, i believe bigger props will always create more lift on the transom, effectively bringing the front down. Imagine having only two forces acting on the boat: One force would be the water acting on lifting the bow, second force would be the prop lifting the transom (high lift props lift the transom a lot, low lift props not so much). Then it’s all about how much or how little those forces are relative to each other, resulting angle the boat sits at. The different batteries used in your test have very different weights i assume. It would be cool to see more tests running the excat same packs and CG. Keep up your great work. Cheers 🌊🚀

[@IRONCLADRC]

Thank you my friend. I was afraid to make this video because everyone has different opinions on the subject You know what I mean but yes you are correct my opinion everything you stated is correct thank you for watching

[@EmilWilkensRC]

@@IRONCLADRC i fully understand. It takes a lot of effort to do a video like you’ve done here. I really do appreciate 🙌🏻 Keep it up brother

[@marcandreasson87]

Newbie here learning heaps. Was that a mono hull you were testing the different props on ? Thanks again for another informative class 👍👍

[@ManCaveTVWest]

Awesome video. Big thumbs up! Do you ever run a three blade prop?

[@IRONCLADRC]

No not really I like 2 blade.

[@bensboat]

Our standard - go to prop on a 4s and set up on a mono is 30" to 33" 4074/4082 up to 2200kv running an Octura x440x3. kzbin.info/www/bejne/i3_GgJermp5pn8k Thanks for the video Ironclad RC.

[@gillian9178]

You also need to compare some of the Octura 3 blade props on the mono, remember to reduce prop size by around 10% going from 2 blade sizes to 3 blade props to reduce the extra load & higher temps with 3 blades.

[@RCplamodel]

*Thank you for sharing this great video! 👍👍👍*

[@naveda08]

Excellent video bro 👏

[@simonjandrell5897]

thanks for explaining this in detail

[@lakelifercboats]

Do you have a video talking about cleaver vs chopper props? Love the channel!!!!!

[@IRONCLADRC]

I haven't addressed that In any of my videos.

[@marshallday538]

Awesome video this. Always run octura M442 on my mono hulls with great results and hardly any cavitation. Got me wanting to experiment now tho. Rebuilding my sr80 atm after trashing it on first outing trying to self right it on 6s with a 3s each side of hull after modifying it internally over a year ago. Also waiting for the Reedy v2 s2 to hit the shops end of this month apparently as all out of stock in the grey and teal everywhere here in the uk as yours is a beast 😂. Take a look at my SR80 build on my post before I trashed it if you get a moment. She be back but keep it at 5s as it was better balanced and would self right with a 2s on the opposite side. Keep up the good work mate. Knowledge is key and hard to find in this hobby 😊👍

[@IRONCLADRC]

I like m series props, especially for mono hulls

[@marshallday538]

I apolagise its been the Octura X642 i been using on basically everything i have owned to date. M41, SR80pro upto 6s through my 120a Hobbywing seaking with a pair of big caps fitted. Loving the work Big B 👍😁👍

[@michaelgooding5284]

I got a new Dasabota prop for my blackjack, 42I got it all dialed in. Now it's 70 plus miles per hour, but at top speed, the whole boat's out of the water, only thing in it is the propeller and the rudder, trying to figure out how to get more speed out of it. When it does that do I use let's lift on a prop when I go with more pitch or just a bigger diameter

[@IRONCLADRC]

That's exactly what you want! A fine balance of blowing off the water and going fast.

[@Dokroc78]

Another great informative video. Keep them coming!

[@judechopper]

Well done cheers, I thought I knew my props😂

[@Grizzle1ful]

Great video! Thank you for this! Great info.

[@opdoc67]

Great video I have a RC speed boat old have for years , I can't find propellers two props this size can you help? Diameter 36.4mm shaft with a tooth cut 2.8mm diameter Thanks

[@IRONCLADRC]

www.offshoreelectrics.com/categories.php?cat=Propellers

[@rodneyrasmussen1199]

Love the new intro

[@ralphreich9636]

Hey iron clad rc Appreciate your response thank you Opened up the collet with mini grinder fixed the problem next question is what steering sevro should I use on my TFL pursuit boat appreciate your response.

[@IRONCLADRC]

I would go with at least a 25- 35kg servo range.

[@rwardenutube]

great video. lots of good info

[@marknickells6097]

Thank you, and for your advice. Apple to Apple. Who you stick with the ABC , or the PROBOAT prop? When I tested the Black Jack , on 6S. The boat seemed to stay down better, but because of the smaller, 90 AMP. ESC. I didn't want to push it. I also couldn't get the boat to settle. I don't know if was torque roll , or me not being patient in my turns.

[@IRONCLADRC]

@marknickells6097 I'm an ABC guy through and through, check bonzi sports I think they have some abc props in stock also OSR

[@williamkaulahao4338]

What prop do I need for top end for a black jack boat. Thanks iron clad love the you tube videos 👍

[@IRONCLADRC]

I hit 73 mph with the 1.7x1.6 proboat prop there looks to be a typo in the description, it's definitely the right prop. Description says 1/16 but it's definitely 3/16 shaft www.avantlink.com/click.php?tt=cl&merchant_id=953aec29-878e-4306-b620-2df85883455e&website_id=70256520-69d3-496b-a06d-cfbf9af7a81d&url=https%3A%2F%2Fwww.horizonhobby.com%2Fhttps%3A%2F%2Fwww.horizonhobby.com%2Fproduct%2Fleft-side-prop-cw-rotation-1.7-x-1.6-1-16-shaft-miss-geico-zelos-36%2FPRB282063.html

[@Longfin1218]

A prop with a wider cone angle would create more stern lift. Think of the thrust cone angle as a up and down force vector. The down force acts against the water. As the vector is more perpendicular (wider), you get that force reaction back up from the water. Equal and opposite reaction. If the vector is at a 45 degree, you are not getting the same reaction up, as the thrust is on an angle. The force vector up is not met by the same water on the down vector, and you dont have the same opposite force as you do on the down side. You end up getting a larger force vector up on the bottom side than the down force created by the top side vector. Hence you have a lifting force up. The faster your hull goes, the more force you will have acting on the hull creating lift. More lift, the less drag from displaced hull. Speed is a function of prop size and pitch which will create the least amount of slip. Too small and you cant get enough thrust and you may cavitate. Too large and you cant get enough rpms. Same with pitch high and low. So its a balance act. The theoretical best running angle will be 3.5-4.5 degrees. So you want you hull balance at speed to be running between 3.5-4.5 degrees. Different props can change this angle. So adding stern lift or bow lift for example. Cupping creates bow lift. You may be seeing different total hull lift more based on the prop diameter and pitch reaching more rpms with less slip, and that creating your hull lift. You would need to get something that can measure RPM of the motors at the top speed to tune your diameter and pitch. The prop lift is determined on thrust cone angle. Wider gives stern lift, narrower usually creates bow lift. You can flare out the end of the hubs to create lift as well.

[@IRONCLADRC]

Thanks, there's definitely some great information here, I appreciate you taking the time to post this.

[@tgfcujhb7583]

You well and truly buried that thing, surprised you didn't crack the joint. 🤣👍👍

[@IRONCLADRC]

No hull breaks thank God

[@dimalranasinghe8152]

Thank you very much.

[@jomscompetente554]

how did you measure thier pitch?

[@jasonlamparter9908]

What prop do you recomend for a pro boat recoil v2 electronics are stock except servo new to the rc boats put gnns on it today and hit 36 tryin to get 40-45 i run 3s in it

[@IRONCLADRC]

Cnc 4216 3 blade detounged for 3s running, this prop will be to big for 4s , only 3s. www.offshoreelectrics.com/proddetail.php?prod=cnc-4216350&PARTNER=ironclad

[@TheNoNameRCPodcast]

Thanks for the vid !

[@beezomaticful]

I think a way to measure torque would be helpful.

[@marknickells6097]

I just "Upped my game to the V2 Black Jack 24. It came with the Black Jack 42 prop, which is from what I have seen ' is a HIGH lift prop. It maybe O.K for the Bigger boat; But definitely NOT a good match for the new boat. I'm thinking a low -lift .440 would be a better match. CNC .440, versus, an Octura? Any thoughts? OR, a TFL. .440. I am running the TFL .438 on my original Black Jack 24. And it lays the boat down smooth. Or, is an ABC prop, a better choice? Thanks for your answer, in advance.

[@IRONCLADRC]

Abc 1716 or proboat 1.7x16 is a great choice for the v2. The v2 likes larger props

[@GinaWiley-o3m]

Where do you get a new prop ? I also need a top cover cabin for my udi005

[@IRONCLADRC]

Offshoreelectrics.com. can't help with the hatch

[@JasonGunn418]

So what prop would be the most stabilized for a traxxas catamaran boat the M41? Fast but keep the nose down. I would be running straight 6s only.

[@IRONCLADRC]

I've never run a m41 but if I had one my first choice for prop would be an abc 1616. But check Temps with stock electronics

[@eugeniotkach1564]

Ciao! Scusami se ti disturbo. Ma secondo te, quali meglio, di plastica, rame oppure alluminio? Tuo consiglio per favore! Grazie

[@hoodatdare7039]

GOOD VIDDIO. I ALWAYS LIKE THEM. INFORMATIVE. DID YOU DAMAGE YOUR BOAT WHEN YOU CHRASHED THE SHORE. THE HOCKEY SOCK TAPE ON AMAZON LOOKS THE SAME AS THE STUFF YOU USE. IT"S CHEEP

[@IRONCLADRC]

I broke the epoxy that holds my vertical esc mount. I just fixed it, this time I used a couple screws along with epoxy. Should hold up better now. Did you get your first boat? (F1 tunnel hull)

[@hoodatdare7039]

@@IRONCLADRC I WAS TOLD BUY MY DAUGTER I NEED A HOBBY, SO SHE IS GOING TO TAKE ME TO A HOBBY SHOP TO BUY ME A BOAT. STILL LOOKING AT THE F1 BUT I AM ALSO LOOKING AT THE NEW ATOMIC 798-3

[@Wadinator]

Can u get me a link I have an alpharev r308 and I can’t find a propeller that will fit it and find the right propeller to have it faster top end just need it to be 5mph faster if u see this can u help me

[@IRONCLADRC]

What's the prop shaft size? 1/8, 4mm, or 3/16

[@Wadinator]

@@IRONCLADRCall I know is the prop shaft is 30mm in diameter so i don’t know what that is equivalent to

[@firzanaziz6776]

I'm using Udi1008 Gallop, any recommendation which propeller is best for mine?

[@IRONCLADRC]

Check out tfl props.

[@danasrc1684]

Your not in Colorado are you? Just getting into rc race boats, where is the best place to buy the octora props like that 448 👍

[@IRONCLADRC]

OFFSHORE ELECTRICS HAS A LARGE SELECTION OF PROPELLERS. North Carolina

[@ryandakar2956]

If the shaft uses a 4mm size, can it use a 4.76mm shaft diameter propeller? Thank you 🙏..

[@IRONCLADRC]

No sire you would need a prop adapter

[@dmytro5428]

Hello, please recommend me a propeller for the TFL F1 Caudwell tunnel boat, I have a 2960 motor with 1900kv and a 36mm propeller, pitch 1.9 The problem is that there is not enough power, the boat takes a long time to get out of the water. I ordered a 2968 / 3400kv motor and now I need to choose the propeller size and its pitch. I'm looking forward to your advice, thanks!

[@IRONCLADRC]

I'm not real familiar with that hull? What size stub shaft? 1/8, 4mm or 3/16.

[@dmytro5428]

@@IRONCLADRC F1 Sterndrive System with 3 mm shaft. Size of boat Length: 750 Beam: 290 Height: 160

[@Fabianthehunter]

Are this the cheap Zeee Lipos from amazon? Would you reommend them for boats?

[@IRONCLADRC]

So far so good with the zee battery's. Not exactly sure where there were purchased one of my Subscribers sent them to me.

[@nsvaluto48328]

hey big B im considering a 3blade for my sonicwake 36 but im not sure if its left handed or right can help how i tell on that thanks

[@IRONCLADRC]

All single drive boats are left hand lay rotation

[@nsvaluto48328]

@@IRONCLADRC so i can get a left handed one

[@IRONCLADRC]

Yes sir.

[@opelchampion]

Hello sir... im new to boats. Im curently building an old graupner f1 boat with a inboard setup.. leopard 3674 2650kv 4s battery.. boat is about 70cm long and running weight is about 2.4kg... can you suggest a starting prop for a fast acceleration and stable boat.. would like about 60 miles.. what abc prop should i start with.. 2 blade 42 1.6 pitch and high rake... hope you can help me out kind regards René from denmark

[@IRONCLADRC]

I really wish I could help, I don't have any experience with f1 style boats. If it were me , I'd start with an x440 or x442. Check Temps speed & handling if it's cool and handles good prop up

[@opelchampion]

@@IRONCLADRC thank you sir.. what would that be in an abc prop as it is very easy for me to buy these props...

[@opelchampion]

@@IRONCLADRC abc 1614 with 17° rake.. higher rake must be the way to go with cats and tunnel hulls like f1 boats

[@IRONCLADRC]

Abc props I'd go with a 1516 17/45 or 1614 17/45

[@IRONCLADRC]

If the 17/15 seres is to much you can try the 10/50 seres

[@joebertgura2985]

How much propeller

[@garryhodgson2614]

Hi guys I am new to this hobby I have a joysway Alfa they recommend using 6s 5000 .50c packs can anyone recommend some good solid packs to use it's a minefield ?? Thanks guys

[@marknickells6097]

"It's like the Need for Speed," Until you run out of lake. Our Local boat club is using a man -made lake, and with odd dimensions. Maybe a half a mile in the sweet spot. A boat , running around 30 MPH. , runs out of realistate , pretty quick. AT 45, it's over fast. We've run M41's and a Miss Geigo, and they are clocking in +50. I'm still trying to figure out, how you managed 63, on the Black Jack 24.... and kept in the water. A guy dropped a Velos 29 once , and was right at 50. I think he was running 6 S, and stock , for the rest. THX, again for your great video work.

[@theideasman6018]

Where can I buy a mold to cast propellers

[@IRONCLADRC]

I'm not sure you may have to make a mold.

[@raymondzhao9557]

coooooooooooool

[@jonathanmackey502]

What's the difference between aluminum, brass,copper, radium

[@IRONCLADRC]

Working on a follow up video getting more into the subject.

[@rodfish-jy2mo]

Will any prop fit on a Traxxas spartan boat

[@IRONCLADRC]

not realy. make sure the shaft is the right size & start with a 45mm prop. 1.4.-1.6 pitch

[@rodfish-jy2mo]

@@IRONCLADRC What is the millimeters for a Traxxas prop For the Traxxas spartan boat

[@rickbarg3980]

I put on a Hot Racing prop and trim tabs ,there’s a delay in the throttle ,so I went and put everything back to stock now no more delay any of you Pro boaters have any ideas ,on a M41 Traxxas cheers.

[@IRONCLADRC]

It has Is a delay because it's probably a high pitch propeller high pitch propellers have a little bit of cavitation on the start and your top end will be much better that's Somewhat normal

[@rickbarg3980]

That’s exactly it the stock plastic prop has no delay,it was under warranty ,they thought it was an electrical problem,blue the metal prop has a bullet nut holding it on ,I was told buy the tech to upgrade to 3 s ,but it’s not a battery problem,it’s nice to finally have answer to my problem,Thankyou for your knowledge.and the quick response.

[@rickbarg3980]

I’m assuming Hot Racing props are balance

[@rickbarg3980]

@@IRONCLADRC can you recommend a good prop for my M41

[@IRONCLADRC]

1.7x1 6 or m440 or x442/445 possibly dentounged so it doesn't load motor

[@carodindin7842]

kirim ke indonesia mister propelernya 😁

[@beezomaticful]

What exactly is a lifting prop? What does it lift?

[@IRONCLADRC]

Working on a follow up video getting more into the subject.

[@beezomaticful]

@@IRONCLADRC I am loving that I'm able to comment about you channel. However ultimately it's that I get responses, quickly! From the guy who does the channel! Im going to be able to say, "I was able to talk to him directly when", after you breech 100,000 subs! Looking forward to more from your ever improving channel!!

[@derrickdavis2856]

You need to make sure that you’re using the same types of batteries in every way for proper testing you went from using a 50 C battery to using a a 80c battery there’s going to be a significant difference in performance regardless of prop you could use the same prop and have different performance using a different sea rating. This video is useless.

[@rickbarg3980]

I spent 50 bucks on a CNC prop and the factory plastic one out performs it

[@IRONCLADRC]

Ouch! that has to hurt.

[@rickbarg3980]

@@IRONCLADRC the stock prop is 42 by59mm and the so called upgrade is 42by60mm is there that little difference to cause cavitation

[@rickbarg3980]

It’s actually 42by63

[@IRONCLADRC]

No not necessarily bigger props Will not let the motor spool up/rev up to full/maximum RPM so it's restricting the output at higher RPM's because the propeller is larger in size Bigger necessarily isn't always better

[@rickbarg3980]

@@IRONCLADRC I wanted a better prop than what was on the boat,plastic and the one that was sent,stock prop 42 by 59, upgraded prop 42 by 63,as you said that would cause the delay

[@brianbrissette9444]

I love this channel BigB your growing by testing and floating us a solid 👌 oh by the way 11:00 blaming the radio was so funny... I meant to do that would also have worked for a laugh 🤩🧑‍🦽BB