Prop idea's for a DCB Mach 22 ?

[Marko]

I know a bunch of you guys have already figured this out. It's a 300 XS and currently has a 5 blade and doesn't have any #'s on it anywhere so I don't have a clue on pitch...looks like it might have been worked on. Just curious what the best all around prop might be.

 

[cheezpanel]

I ran a vented Bravo 4 blade labbed 28 on mine...300 Promax.

 

[pwerwagn]

Bravos are very popular all around props for these boats. Most of them end up worked a little, similar to the bblades ob/f. Vented, shortened, etc.

I would guess you’ll wind up with a 28 or 30 pitch. Removing the exhaust flare will reduce transom lift if necessary. If you get something with PVS vents or similar, you can tune the vents to your liking.

 

[RCDave]

Bblades blaster

 

[Joker]

Running a 28 on my 22. I’ll get you some more info this week once the shop looks at it


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[pwerwagn]

I guess the other question...are you using it as a ski boat? Want all the top end you can get? Midrange Acceleration?

A bblades blaster is a solid choice too.

 

[Marko]

Not using as a ski boat. I found a ton of info on these boats on PB and I think the setback is ok I just think the motor needs to be raised a couple inches. I hear Bblades Blaster is a good choice and they have an exchange program to get you dialed in. From what I've read it should be reasonable to expect 90 mph out of this hull and motor combo. Not looking for every mph as much as an all around good prop. Seems most run a 26 to 30 pitch, just wanted to see what the general thoughts were. Thanks for any info.

 

[RCDave]

I run a Merc 26xs pro finish on my Cougar 22MTR with a Merc 300xs.

It's a pretty good overall prop. Best I've seen on top end is 92-94mph.

 

[Marko]

Here's my current prop. Anyone recognize the logo?

 

[RCDave]

Looks like a mercury logo. Not sure what wheel this is.

 

[Marko]

Theres no #'s on it which is why I think its been worked over. Seems like they would have put their own #'s on it when they did it though.

 

[Flying_Lavey]

Theres no #'s on it which is why I think its been worked over. Seems like they would have put their own #'s on it when they did it though.

Did you pull the prop and check the backside of the hub for numbers stamped in it?

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[Marko]

Did you pull the prop and check the backside of the hub for numbers stamped in it?

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Not yet....will do tomorrow. Is that a Merc logo?

 

[4Waters]

Not yet....will do tomorrow. Is that a Merc logo?

I would say it is.

 

[NicPaus]

Just looked at a Merc high 5 I have. Different. All the Merc props I have are easy to identify. Never seen that emblem.

 

[ONE-A-DAY]

Not using as a ski boat. I found a ton of info on these boats on PB and I think the setback is ok I just think the motor needs to be raised a couple inches. I hear Bblades Blaster is a good choice and they have an exchange program to get you dialed in. From what I've read it should be reasonable to expect 90 mph out of this hull and motor combo. Not looking for every mph as much as an all around good prop. Seems most run a 26 to 30 pitch, just wanted to see what the general thoughts were. Thanks for any info.

Raise the engine a 1/2 inch at a time until the water pressure drops, once that happens go back down a 1/2. You’ll need more than one prop, the 5 blade is going to be your heavy load prop for speed your going to want a over the hub exhaust chopper / ET style, 4 blades or for max top speed 3, prolly in the 28 neighborhood, maybe a 30 in winter time with a light load.

 

[DC-88]

I just got a new factory vented bravo for our Mach 22 last year and they have pairs of small holes instead of the big holes we used to get drilled. More of a 6K rpm burnout effort to launch with the new prop (loaded Mach 22 is pretty heavy ) than with the big holes but I have an X not xs. Overall the most user friendly over the years for us has been a vented bravo 26 to ski and cruise and a labbed 28 bravo or 3 blade chopper for top speed but as mentioned motor must be raised from optimal ski/cruise ht. for best #'s and to get rid of the 84 mph gentle rollover porpoise. Custom engraved billet Jack plates would have been a nice touch --

 

[pwerwagn]

Here's my current prop. Anyone recognize the logo? View attachment 646907 View attachment 646908

Looks very similar to the max 5. The exhaust flare looks different though.

 

[UAV.Pilot]

walts advice is what I would also recommend as well

Blades blaster 28 and 30

 

[RCDave]

Anyone have any comparison experience between the following?

BBlades Blaster
https://bblades.com/shop/propellers/brand/bblades/bblades-blaster/

Hill Eagle
http://www.hillmarine.net/four-blade-outboard-propeller-p/opr4e.htm

They appear similar

 

[Marko]

I would say it is.
View attachment 646909

I just got a new factory vented bravo for our Mach 22 last year and they have pairs of small holes instead of the big holes we used to get drilled. More of a 6K rpm burnout effort to launch with the new prop (loaded Mach 22 is pretty heavy ) than with the big holes but I have an X not xs. Overall the most user friendly over the years for us has been a vented bravo 26 to ski and cruise and a labbed 28 bravo or 3 blade chopper for top speed but as mentioned motor must be raised from optimal ski/cruise ht. for best #'s and to get rid of the 84 mph gentle rollover porpoise. Custom engraved billet Jack plates would have been a nice touch --

Here's my jack plate. Also took pics of mounting holes & motor in the down position compared to bottom of the hull. Does anything catch your eyes right off the bat that's wrong?

 

[ONE-A-DAY]

Here's my jack plate. Also took pics of mounting holes & motor in the down position compared to bottom of the hull. Does anything catch your eyes right off the bat that's wrong? View attachment 646980 View attachment 646975 View attachment 646977 View attachment 646978 View attachment 646979

You don’t have a jack plate, that’s a set back bracket. Motors is on the lowest hole, raise it a hole and test before buying props.

 

[RCDave]

Here is what a Bob Hyd. Jack Plate looks like (with a setback bracket too).

 

[HavaToon]

Here's my current prop. Anyone recognize the logo? View attachment 646907 View attachment 646908

That is a Mercury Racing factory lab finish Maximus. http://www.mercuryracing.com/boat-propellers/sterndrive/maximus/

Keep it! And then do what Walt said.


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[Marko]

Gotcha...will do. This outboard stuff is completely new to me so I appreciate the info. Gonna raise the motor Thurs. morning and run to the lake and test it before spending the farm on props I guess.

 

[Marko]

Ok....raised the motor 2 holes and it went from 73 mph to 77 mph @ 6400 but the water pressure would drop below 10 as I trimmed it up so I think I'll lower it 1 hole. Also I think this 5 blade isn't working on it, most seem to be running a 26 bravo, anyone have one for sale?

 

[Joker]

Interesting thread[emoji106]


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[Universal Elements]

Ok....raised the motor 2 holes and it went from 73 mph to 77 mph @ 6400 but the water pressure would drop below 10 as I trimmed it up so I think I'll lower it 1 hole. Also I think this 5 blade isn't working on it, most seem to be running a 26 bravo, anyone have one for sale?

Call Teague Custom Marine. They just had a live feed on Instagram (yesterday) with Bob regarding props. That is one guy that really knows his stuff. His knowledge is amazing. Be prepared to give him information on current set-up.

 

[PlanB]

Ok....raised the motor 2 holes and it went from 73 mph to 77 mph @ 6400 but the water pressure would drop below 10 as I trimmed it up so I think I'll lower it 1 hole. Also I think this 5 blade isn't working on it, most seem to be running a 26 bravo, anyone have one for sale?

What about going with external pickups? I did this when I was setting up the outboards on one of my boats, and the high motor height / water pressure issues went away.

 

[Marko]

What about going with external pickups? I did this when I was setting up the outboards on one of my boats, and the high motor height / water pressure issues went away.

I don't think I will need to do that once I get it figured out. No one else is doing that in all the other threads I've been reading. I've got pretty much the same setup as guys that are getting 90 mph out of them except for the prop so that's where I'm going next.

 

[Flying_Lavey]

No real need to do so with a speed master. The pick-ups are on the bottom side of the prop shaft. Not much need to run them that high with the correct prop selection.

What about going with external pickups? I did this when I was setting up the outboards on one of my boats, and the high motor height / water pressure issues went away.

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[DC-88]

I don't think I will need to do that once I get it figured out. No one else is doing that in all the other threads I've been reading. I've got pretty much the same setup as guys that are getting 90 mph out of them except for the prop so that's where I'm going next.

Yeah, I've never seen a 5 blade on one before , and you can see from the pics the motor has been moved around previously. You'll be 82-85 with a labbed 26 bravo is my guess. I have my old extra one that I keep as a spare in Needles you're welcome to try but I won't be out for a couple weeks . One prop that didn't work on mine was the new 26 signature 4 blade . We always go back to the bravos for all around use. Fastest mine ever went was 90 with a 3 blade chopper but it's just our river cruiser play/ski boat so I don't stress much over it--

 

[outboardrick]

Bottom line is that a Merc ET will be your fastest prop.....May not do EVERYTHING you want but will be fastest top end, and probably lift the boat the best.

 

[RCDave]

Yeah, I've never seen a 5 blade on one before , and you can see from the pics the motor has been moved around previously. You'll be 82-85 with a labbed 26 bravo is my guess. I have my old extra one that I keep as a spare in Needles you're welcome to try but I won't be out for a couple weeks . One prop that didn't work on mine was the new 26 signature 4 blade . We always go back to the bravos for all around use. Fastest mine ever went was 90 with a 3 blade chopper but it's just our river cruiser play/ski boat so I don't stress much over it--

Shouldn't the Mach 22's run low 90's with a 300x or xs?

 

[DC-88]

Shouldn't the Mach 22's run low 90's with a 300x or xs?

Too many zip ties and excess stereo stuff and cooler weight in mine perhaps [emoji41] but yes ..get the weight out, raise the x a bit above skiing height and they have. They run better with twins imho.


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[PlanB]

No real need to do so with a speed master. The pick-ups are on the bottom side of the prop shaft. Not much need to run them that high with the correct prop selection.

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I had Sport Masters on my 300x's on a 28 Skater. Running the prop shafts 3/4" above the bottom of the sponsons resulted in water pressure problems without the external pickups.

 

[ONE-A-DAY]

Ok....raised the motor 2 holes and it went from 73 mph to 77 mph @ 6400 but the water pressure would drop below 10 as I trimmed it up so I think I'll lower it 1 hole. Also I think this 5 blade isn't working on it, most seem to be running a 26 bravo, anyone have one for sale?

Good move, two holes is alot, probably 2-3". Get rid of the 5 blade and go with a 4 blade bravo for normal use and a 3 or 4 blade ET / big ear chopper style for running fast with light loads. Keep a cordless impact gun sitting on the shelf by the engine in the garage and change your props like your underwear, game day decision, takes all of a minute.

 

[Flying_Lavey]

Yeah, I think you may have been better off dropping them 1/4" and maybe reducing pitch 1" or so.

I had Sport Masters on my 300x's on a 28 Skater. Running the prop shafts 3/4" above the bottom of the sponsons resulted in water pressure problems without the external pickups.

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[ONE-A-DAY]

I’ve had low water pickups on a few boats. After blocking them off and using the lower unit pickups the pressure went up. I think a lot of it on the 90’s era dcbs was for the cool factor of the braided lines coming out of the back up the boat.

 

[Marko]

Good move, two holes is alot, probably 2-3". Get rid of the 5 blade and go with a 4 blade bravo for normal use and a 3 or 4 blade ET / big ear chopper style for running fast with light loads. Keep a cordless impact gun sitting on the shelf by the engine in the garage and change your props like your underwear, game day decision, takes all of a minute.

Yeah, youre right, gonna lower it back down 1 hole. Got a deal on a bravo 4 blade 28p...we'll see.

 

[Marko]

Ok... a little update here if anyone is interested.
Took it to the lake today and tried it with a Bravo 28 4 blade. still have the motor in the 3rd hole from the top. I know "one- a- day" said to only go up 1 hole but I went 2, I know, I know
It went up to 83 @ 5900 , everything is the same except last trip it had the 5 blade ( no #'s on it) and went 77.
The water pressure was 15 while legged out but down around 10-12 while cruising, seems kinda low.
So my questions are ...
#1 should I lower it back down 1 hole or back to where it was at the lowest top hole?
#2 If I went to a 26p prop I'm sure it would pick up some rpm's but would it pick up any top speed?
#3 Is it normal for them to get harder to steer as the motor gets higher?
Thanks for any input !!

 

[HavaToon]

Ok... a little update here if anyone is interested.
Took it to the lake today and tried it with a Bravo 28 4 blade. still have the motor in the 3rd hole from the top. I know "one- a- day" said to only go up 1 hole but I went 2, I know, I know [emoji4]
It went up to 83 @ 6900 , everything is the same except last trip it had the 5 blade ( no #'s on it) and went 77.
The water pressure was 15 while legged out but down around 10-12 while cruising, seems kinda low.
So my questions are ...
#1 should I lower it back down 1 hole or back to where it was at the lowest top hole?
#2 If I went to a 26p prop I'm sure it would pick up some rpm's but would it pick up any top speed?
#3 Is it normal for them to get harder to steer as the motor gets higher?
Thanks for any input !!

What gear ratio? 1.62 or 1.75? Either way your slip # is in the 20’s which is way high. Drop one hole and try a 30p.

PSI is fine and yes without power assist hydraulic steering they get harder to steer at speed.

And try a Max 5 prop if you can. Spendy but they seem to work amazing.

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[goshen82]

Joe at hot laps works on a lot of these may want to give him a call and see what he says on set up. I have run a lot of signature props on my talon and they work pretty well more of a cleaver style prop.

 

[Marko]

I have no idea the gear ratio.

 

[HavaToon]

I have no idea the gear ratio.

It’s located on your engine spec tag.

Joe at hotlaps is a great recommendation and I do believe the 22 with a 300xs should be I. The high 80’s possibly low 90’s.


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[Doc]

Something doesn't seem right, you have an x or a xs? If you have an xs spinning 6900 rpm doesn't make sense since rev limiter is 6150 or 6350 don't remember . If you have an x you're still right there at the top.

1. I wouldn't lower it just yet you are still maintaining water pressure. Make sure the buzzer still works in case it drops and you don't notice it.

2. If your numbers are correct I wouldn't prop down I would prop up to a 30 as it seems based on your rpm you're stating.

3. Yea steering gets tight at higher mph.

 

[HavaToon]

Something doesn't seem right, you have an x or a xs? If you have an xs spinning 6900 rpm doesn't make sense since rev limiter is 6150 or 6350 don't remember . If you have an x you're still right there at the top.

1. I wouldn't lower it just yet you are still maintaining water pressure. Make sure the buzzer still works in case it drops and you don't notice it.

2. If your numbers are correct I wouldn't prop down I would prop up to a 30 as it seems based on your rpm you're stating.

3. Yea steering gets tight at higher mph.

Correct 300xs is 6150 factory, 6400 max when raised via VesselView. 6800-7000 with the DBR kit. And now noticing your RPM, I agree prop up not down as I stated before.

You shouldn’t be able to hit 6900, in stock form the rev limiter would have kicked in hard. I looked back at the MOM add and no mention of a DBR kit so I say it’s stock. Which means things don’t add up.

Zoomed in on your photo 6400 max right on the tag.

 

[Marko]

Something doesn't seem right, you have an x or a xs? If you have an xs spinning 6900 rpm doesn't make sense since rev limiter is 6150 or 6350 don't remember . If you have an x you're still right there at the top.

1. I wouldn't lower it just yet you are still maintaining water pressure. Make sure the buzzer still works in case it drops and you don't notice it.

2. If your numbers are correct I wouldn't prop down I would prop up to a 30 as it seems based on your rpm you're stating.

3. Yea steering gets tight at higher mph.

Sorry guys.....my mistake. Not 6900...5900.

 

[Marko]

Correct 300xs is 6150 factory, 6400 max when raised via VesselView. 6800-7000 with the DBR kit. And now noticing your RPM, I agree prop up not down as I stated before.

You shouldn’t be able to hit 6900, in stock form the rev limiter would have kicked in hard. I looked back at the MOM add and no mention of a DBR kit so I say it’s stock. Which means things don’t add up.

Zoomed in on your photo 6400 max right on the tag.

Thanks!!! It's all stock, so if I went down to a 26 I've still got a little room on the limiter but would I gain top end? Also should I lower the motor 1 hole?

 

[Marko]

Something doesn't seem right, you have an x or a xs? If you have an xs spinning 6900 rpm doesn't make sense since rev limiter is 6150 or 6350 don't remember . If you have an x you're still right there at the top.

1. I wouldn't lower it just yet you are still maintaining water pressure. Make sure the buzzer still works in case it drops and you don't notice it.

2. If your numbers are correct I wouldn't prop down I would prop up to a 30 as it seems based on your rpm you're stating.

3. Yea steering gets tight at higher mph.

So at what water pressure should I watch for? Just idling its about 5-6, 30 -40 mph its about 10-12. Legged out its 15.