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Pulsare top speeds
- Thread starter JY
- Start date
When I first bought my Pulsare, I put a 2000 225 Promax on it with TM case. It would run 76-77 on GPS with a 24 Trophy at about 6600-6700 rpms. Had 8" of setback total
Then I sold that motor and put a 2000 300 Promax with SM case on her. Bumped up to 83-84 on GPS with a 28 Trophy at about 6000-6100 rpms. I had it hit 85 and 86 a couple times. Still had 8" of setback. I ran with just a tad bit of positve trim. I needed just a little more setback, maybe 10" or 12" total. I also always wondered what it would do with the FM case. I had heard of a few guys running a touch faster, high 80's and close to 90, especially with the newer 300X motors.
-Craig
Then I sold that motor and put a 2000 300 Promax with SM case on her. Bumped up to 83-84 on GPS with a 28 Trophy at about 6000-6100 rpms. I had it hit 85 and 86 a couple times. Still had 8" of setback. I ran with just a tad bit of positve trim. I needed just a little more setback, maybe 10" or 12" total. I also always wondered what it would do with the FM case. I had heard of a few guys running a touch faster, high 80's and close to 90, especially with the newer 300X motors.
-Craig
bluehealer
Member
My 95 Pulsare harddeck has a 3 liter 230hp johnson on it,with 6' of setback,2 people,i can get 70mph gps.That's a 4 blade renegade.
2005 Pulsare 2100BR with 2005 Promax 300X, 12" setback, 25" cupped Tempest Plus prop, so far 91 MPH GPS. Given more seat experience and changing back to the 27” cupped Tempest I believe this setup will break 100 MPH
Pulsare 2100BR with Mercury Promax 300X
Pulsare 2100BR with Mercury Promax 300X
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Craig:
You'd need to turn a 32" prop to break 100mph, or a 30" if you have 1.62 gears...unless you are going to run up past the rev limit.
I wouldn't hesitate to try, though.
-Craig </div></BLOCKQUOTE>
PROP CALCULATOR
6800 Engine RPM
Recommended WOT 6100 to 6850 RPM
Rev limiter is 7000 RPM
Gear ratio 1.62
Prop 28” equals 27” + 1” cupped prop
Prop slip .10 (10%)
Note at 91 MPH GPS with the 25” cupped prop the calculated slip equaled 8% - less slip means higher speed
= 100.2 MPH @ 10% slip
= 102.4 MPH @ 8% slip
BOAT SPEED CALCULATOR
Weight ~2050
Shaft HP 330
Constant 250 Fast V bottom
= 100 MPH
You'd need to turn a 32" prop to break 100mph, or a 30" if you have 1.62 gears...unless you are going to run up past the rev limit.
I wouldn't hesitate to try, though.
-Craig </div></BLOCKQUOTE>
PROP CALCULATOR
6800 Engine RPM
Recommended WOT 6100 to 6850 RPM
Rev limiter is 7000 RPM
Gear ratio 1.62
Prop 28” equals 27” + 1” cupped prop
Prop slip .10 (10%)
Note at 91 MPH GPS with the 25” cupped prop the calculated slip equaled 8% - less slip means higher speed
= 100.2 MPH @ 10% slip
= 102.4 MPH @ 8% slip
BOAT SPEED CALCULATOR
Weight ~2050
Shaft HP 330
Constant 250 Fast V bottom
= 100 MPH
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by JY:
Thanks for the replies guys. SL: sent you a PM with a few more questions if you get a chance to check it out. </div></BLOCKQUOTE>
Hi John,
How does it handle? LOL. . . It is a handful! Above 80 it is definitely prone to chinning. At 90+ it is like putting a 2x4 on top of a bowling ball and trying to balance. I have not experienced any vibration issues. I have not used the boat for skiing so I can not comment on the ski performance.
Originally from the factory the boat was setup with 5” of setback and was very prone to chine walking at 68 and above. The fastest that I was able to go with 5” of setback was 83 MPH GPS, above that I simply was not able to avoid chine walking, it was one spooky ride.
Then we changed to 12” of setback and that completely changed the handling of the boat at higher speeds and all for the better. With 12” of setback the boat cruises at 75 with little tendency to chine; just an occasional correction is all that is needed. Above 80 things start to get interesting and the steering corrections better be timely and correct to balance the boat and avoid chine walking. At this point the 91 MPH GPS is my limitation and not the boat motor combination. Properly trimmed I can run 90 with out being at WOT, I think at this point I just need allot more seat time
Steve
Thanks for the replies guys. SL: sent you a PM with a few more questions if you get a chance to check it out. </div></BLOCKQUOTE>
Hi John,
How does it handle? LOL. . . It is a handful! Above 80 it is definitely prone to chinning. At 90+ it is like putting a 2x4 on top of a bowling ball and trying to balance. I have not experienced any vibration issues. I have not used the boat for skiing so I can not comment on the ski performance.
Originally from the factory the boat was setup with 5” of setback and was very prone to chine walking at 68 and above. The fastest that I was able to go with 5” of setback was 83 MPH GPS, above that I simply was not able to avoid chine walking, it was one spooky ride.
Then we changed to 12” of setback and that completely changed the handling of the boat at higher speeds and all for the better. With 12” of setback the boat cruises at 75 with little tendency to chine; just an occasional correction is all that is needed. Above 80 things start to get interesting and the steering corrections better be timely and correct to balance the boat and avoid chine walking. At this point the 91 MPH GPS is my limitation and not the boat motor combination. Properly trimmed I can run 90 with out being at WOT, I think at this point I just need allot more seat time
Steve
My 300 (2000 model) had a 6250 rev limit. I always ran slightly under.
Yes it can be a handful above 80. I remember it taking me awhile to get use to it. I would just go out and practice, keeping the boat from falling by changing direction slightly before it would get a chance to fall.
-Craig
Yes it can be a handful above 80. I remember it taking me awhile to get use to it. I would just go out and practice, keeping the boat from falling by changing direction slightly before it would get a chance to fall.
-Craig
1995 Pulsare 2100 BR with the soft bow cover, 10" setback, 3" below the pad, 23" Tempest prop worked for hole-shot, 6400 rpms saw 73.5 mph GPS. 1995 Promax 225 engine with torquemaster lower unit, 1.87:1 gears.
The only thing I don't REALLY know is the true pitch of that worked prop. I do know that my 2.5 225 promax could waste my buddies 3.0 225 efi motor out of the hole, and then he'd get me on top end.
The only thing I don't REALLY know is the true pitch of that worked prop. I do know that my 2.5 225 promax could waste my buddies 3.0 225 efi motor out of the hole, and then he'd get me on top end.
So I'm thinking that realistically a 225 is in the 70 to 73 mph range, the 250 probably 75 to 78 and the big 300 with all of its extra unrated power is in the mid-80s. I've heard though that the 300X is so loud as to be offensive if your doing family baoting, skiing, etc. - any truth to that?
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by JY:
So I'm thinking that realistically a 225 is in the 70 to 73 mph range, the 250 probably 75 to 78 and the big 300 with all of its extra unrated power is in the mid-80s. I've heard though that the 300X is so loud as to be offensive if your doing family baoting, skiing, etc. - any truth to that? </div></BLOCKQUOTE>
I would have to agree, after reading SL's reply, that you could get into the 90's with a 300X if you run it real hard up at the rev limit. I doubt it will ever run 100, though, never heard of one doing that regardless of the "prop calc". The slip on a Pulsare is way more than the light-weight boats out there like say and Allison or 'Stream.
Yes the 300/300x's are loud....when you get up around 4000 rpms or over. The exhust exits are down low enough, that is is quiet at idle and isn't too bad when running slow, say 25-30 mph pulling a skier...When you throttle down, and get out of the water so the relief holes are up out of the water, it screams. Not as high pitch as a 2.5/280, more throaty. You will hear one comming a long ways away. My buddies would say they could always hear me comming before they would see me.
The cops should leave you alone. Like I said, the exhaust exits are low, so you will idle at well under 86d and they won't be able to see them anyway under the water.
-Craig
So I'm thinking that realistically a 225 is in the 70 to 73 mph range, the 250 probably 75 to 78 and the big 300 with all of its extra unrated power is in the mid-80s. I've heard though that the 300X is so loud as to be offensive if your doing family baoting, skiing, etc. - any truth to that? </div></BLOCKQUOTE>
I would have to agree, after reading SL's reply, that you could get into the 90's with a 300X if you run it real hard up at the rev limit. I doubt it will ever run 100, though, never heard of one doing that regardless of the "prop calc". The slip on a Pulsare is way more than the light-weight boats out there like say and Allison or 'Stream.
Yes the 300/300x's are loud....when you get up around 4000 rpms or over. The exhust exits are down low enough, that is is quiet at idle and isn't too bad when running slow, say 25-30 mph pulling a skier...When you throttle down, and get out of the water so the relief holes are up out of the water, it screams. Not as high pitch as a 2.5/280, more throaty. You will hear one comming a long ways away. My buddies would say they could always hear me comming before they would see me.
The cops should leave you alone. Like I said, the exhaust exits are low, so you will idle at well under 86d and they won't be able to see them anyway under the water.
-Craig
The 300X is louder then other consumer outboards but not offensive although that is a biased and subjective opinion. I have had people say that they can hear the motor a mile or two away when running at speed but no one has complained; some people have even indicated that it is a nice sounding engine. From the prospective of being inside the boat it is a very pleasant sound, far better then what I was expecting from reading forums. Running the water flush kit on the trailer the motor is extremely loud like a built V8 running with open headers
My understanding is that the “300” designation stands for 3.00 Liter displacement not HP and that the promax 300 produces 280 to 290 propshaft HP and that the newer 300X produces 330+ propshaft HP.
My understanding is that the “300” designation stands for 3.00 Liter displacement not HP and that the promax 300 produces 280 to 290 propshaft HP and that the newer 300X produces 330+ propshaft HP.
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Craig:
I would have to agree, after reading SL's reply, that you could get into the 90's with a 300X if you run it real hard up at the rev limit. . .
-Craig </div></BLOCKQUOTE>
With the 25” cupped Tempest my run at 91.7 MPH on the GPS the engine was turning ~6500 RPM; 500 RPM away from the rev limit of 7000 RPM. With my 27” cupped prop the engine would be turning ~6100 RPM at 91.7 MPH.
I would have to agree, after reading SL's reply, that you could get into the 90's with a 300X if you run it real hard up at the rev limit. . .
-Craig </div></BLOCKQUOTE>
With the 25” cupped Tempest my run at 91.7 MPH on the GPS the engine was turning ~6500 RPM; 500 RPM away from the rev limit of 7000 RPM. With my 27” cupped prop the engine would be turning ~6100 RPM at 91.7 MPH.
jkeiper
Member
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">I do know that my 2.5 225 promax could waste my buddies 3.0 225 efi motor out of the hole, and then he'd get me on top end </div></BLOCKQUOTE>
I don't mean to hi-jack this thread, but do all 3.0l 225s have a slight hesitation out of the hole? All of them that I have run against have had great top end and idle nice, but I'll get a boat and a half on them off the line. I've even let them nail it first and I'll still get them out of the hole. They all seem to have the same hesitation. (225s at least)
Jim
I don't mean to hi-jack this thread, but do all 3.0l 225s have a slight hesitation out of the hole? All of them that I have run against have had great top end and idle nice, but I'll get a boat and a half on them off the line. I've even let them nail it first and I'll still get them out of the hole. They all seem to have the same hesitation. (225s at least)
Jim
I dunno...me thinks I'd rather run 100 in a Pulsare versus a Stream. Streams are too flighty for me.
I don't know if it's possible to do though, there's just too much weight in a stock Pulsare.
I guess if you got some hypo Jay Smith motah you might pull it off I suppose.
I don't know if it's possible to do though, there's just too much weight in a stock Pulsare.
I guess if you got some hypo Jay Smith motah you might pull it off I suppose.
Black Pulse
Member
Hey GL,
I won't comment much on the speeds of the Pulsare as I don't own a 21'. But I was in a buddies with a 225 on it (no setback) and it did an honest 73-75.
I can however comment on the 300x and its loudness! It is super loud. In fact, a friend of mine has one rigged to a ski boat (mastercraft) and he told me that while he was taking his friends and family skiing in their bay up north it majorly pi$$ed off the neighbours! He found out as it came up in friendly conversation at a party for people cottaging in their bay. On open water and for pure speed it's great (I loved hearing it) but for practical purposes and or living near others, it's as annoying as those blinking donzi's, baja's, and formula boats with the excessively loud and unnecessary above water exhausts.
B.P.
Personally, a 21' Pulsare mated with a 250 efi, optimax, whatever is boat perfection in my eyes!!
I won't comment much on the speeds of the Pulsare as I don't own a 21'. But I was in a buddies with a 225 on it (no setback) and it did an honest 73-75.
I can however comment on the 300x and its loudness! It is super loud. In fact, a friend of mine has one rigged to a ski boat (mastercraft) and he told me that while he was taking his friends and family skiing in their bay up north it majorly pi$$ed off the neighbours! He found out as it came up in friendly conversation at a party for people cottaging in their bay. On open water and for pure speed it's great (I loved hearing it) but for practical purposes and or living near others, it's as annoying as those blinking donzi's, baja's, and formula boats with the excessively loud and unnecessary above water exhausts.
B.P.
Personally, a 21' Pulsare mated with a 250 efi, optimax, whatever is boat perfection in my eyes!!
The first week-end I ran my ZT230 with a 496HO and the exhaust switched open I got two e-mails from others on the cottage association claiming it was both illegal and "immoral" (??). Others on the lake scream "open the pipes" when I drive by - there seems to be no in-between and you'll always have people that don't like noise of any kind. Out of respect, I run with the silent choice engaged 98% of the time, even though with mufflers I'm perfectly legal.
I guess I've got a blinking Checkmate. I feel the open exhaust is absolutely necessary, since it gets me that extra and indispensible 1.79 mph!!
I guess I've got a blinking Checkmate. I feel the open exhaust is absolutely necessary, since it gets me that extra and indispensible 1.79 mph!!
JY,
If by silent choice, you mean switched down thru the prop, I would recommend not doing that...at least not over 3500 rpms. And never switch it down thru the prop while running. There is high risk of damaging push rods, too much back pressure. I personally know guys with big blocks, in particular HO's, that have damaged push rods and dropped exhaust valves because of using the silent choice down thru the prop. My opinion is the thru prop is for lower horsepower engines, essentially small blocks.
I have the swicth thru the prop on my 496HO, and only use it at idle or below 3500.
I love loud motors, outboards and big blocks. The loud noise is just part of the game and goes hand in hand with high horsepower. I think for the most part noise laws are ridiculous, but when your are around housing, it's just common courtesy, law or no law. But, if your not around housing, what difference does it make. Where I boat, we have barges and trains running all the time. The Miss. river is huge, and the loudest hp boat running out in the channel is not going to hurt your ears or even disrupt your conservation. Besides, you'll maybe get 3 or 4 tops, going by in an hour. In many areas the noise laws are just revenue tools, and have no other justification.
As for the 300X, run it all you want. I don't think there are any States out there cracking down on them. The exhuast exit is down under the water at idle, and they'd have to re-write the law in order to affect these motors.
-Craig
If by silent choice, you mean switched down thru the prop, I would recommend not doing that...at least not over 3500 rpms. And never switch it down thru the prop while running. There is high risk of damaging push rods, too much back pressure. I personally know guys with big blocks, in particular HO's, that have damaged push rods and dropped exhaust valves because of using the silent choice down thru the prop. My opinion is the thru prop is for lower horsepower engines, essentially small blocks.
I have the swicth thru the prop on my 496HO, and only use it at idle or below 3500.
I love loud motors, outboards and big blocks. The loud noise is just part of the game and goes hand in hand with high horsepower. I think for the most part noise laws are ridiculous, but when your are around housing, it's just common courtesy, law or no law. But, if your not around housing, what difference does it make. Where I boat, we have barges and trains running all the time. The Miss. river is huge, and the loudest hp boat running out in the channel is not going to hurt your ears or even disrupt your conservation. Besides, you'll maybe get 3 or 4 tops, going by in an hour. In many areas the noise laws are just revenue tools, and have no other justification.
As for the 300X, run it all you want. I don't think there are any States out there cracking down on them. The exhuast exit is down under the water at idle, and they'd have to re-write the law in order to affect these motors.
-Craig