20XD/250XS/Mark's Razor Prop Set Up Help

[jemccall]

Hey guys, need some help in continuing my efforts at getting my boat set up. After breaking a ear on my 28P Bravo I, I recently purchased one of Mark's Razor props (14.5X27P with two 3/4" holes at each blade) and put it on my 20XD powered by a 250XS with SM LU. I have run it twice since purchasing the prop with full tournament loads. The first time was at 3/4" above pad. At this level I was able to run about 76mph at 5000rpm and 20psi water pressure. After this run I raised the motor 1/4" (now 1" above pad) and was able to run it again this past Saturday in a tournament with full load. My results this time was 80mph, 5300rpm, at 16-17psi water pressure.
I think I am headed in the right direction with top end performance by raising the motor again 1/4" (1 1/4" above pad). Hopefully I will get to run it soon with a full tournament load and see the results from that. I can only go up one more click (1/4") and then I will be topped out. The only way to go higher is unbolt the motor and move it up one set of holes (which will be at the very bottom hole, no more after that).
Here's my deal. I am satisfied with top end speed. Prop handles great. Anything 80 or above is fine with me. However, my boat gets run 90% of the time with a full tournament load and my hole shot sucks. I have to have my partner get on the front deck to help it out. Didn't have to do this with my 28P Bravo I. Hole shot seems to have gotten a little better with raising the motor from 3/4" to 1" above pad.
Here are my main questions. Can I expect hole shot to get better as I raise the motor even higher? I don't want to go any higher than 1 1/2" above pad. If hole shot is very important to me (more so than top end speed) what should I do? Go to a smaller Pitch? Just want some suggestions. Thanks and sorry for the long narrative, just trying to give as much info as possible so I can get good input.

[rocketmanjp]

I ran a 27 RAZOR4 and had a 28 and 30 Bravo. The 27 RAZOR4 turns more like a 30 Bravo. Depending on the year of your engine (rev limit), you should be able to step down to a 26 or 25 RAZOR4. 2005 and newer 250XS is a 6350 rev limit and pre-2005 is 5850 rev limit.

[Largemouthlou]

I ran the 27 razor with 1.62 gears it needs more or bigger vent holes then you have, it is a tight prop, I only spun it to 6100.

I'm assuming the 1.62's cause you have the sporty. I would think that the 1.75's would have jumped it up. Ran a 26 razor 4 this weekend on a Stroker with a 250XS, 1.62 sporty and it jumped right up and ran to 6000 at 88.5 with an unballanced boat. My 300X still bogged with the 26 but everything else about the prop was very good!!

[Cooney]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by rocketmanjp &raquo;</td></tr><tr><td class="quote">I ran a 27 RAZOR4 and had a 28 and 30 Bravo. The 27 RAZOR4 turns more like a 30 Bravo. Depending on the year of your engine (rev limit), you should be able to step down to a 26 or 25 RAZOR4. 2005 and newer 250XS is a 6350 rev limit and pre-2005 is 5850 rev limit. </td></tr></table>I ran the same blade, the same day with Rocketman. I have a 21XDC / 250XS 1:62 TM. The blade was a dog to get out of the hole, but once I was up... I got my personal best @ 87 MPH, but was only turning 5600 rpms. The prop runs stiff but I could stand my hull on end if I wanted. Carried the load well, full fuel and fishing gear. Wish we would have had a 26P that was better vented to try. I have a hyd. jackplate also, so I can say I was probably at or about 1/4 above the pad. You may need to go down a pitch, your rig should be rolling once you get her dialed in.

[rocketmanjp]

Hey CoonDog,

That was the 29 3 Blade Razor you was riding wheelies with. I don't think you ran the 27 Razor 4 Blade. I later bought a 27 Razor 4 and had to add some cup to it to get good bow lift with a load. It had some low speed characteristics I just didn't like so I sold it. It was definately the best handling prop at WOT I have ever run, like the boat was on rails.

[DLAB]

What you runnin now rocketman? Im lookin to try a few props out for alittle more holeshot on Buddy's old boat, any ideas?

[rocketmanjp]

I'm back to my 28 TXP ot4. It is my favorite all around prop. I have a 27 on order cause the 28 is a little much with a heavy load in the summer. If I remember seems like Buddy liked a 30 TXP ot4 on his old rig. I think Kyle has it now or did. Kyle bought both my Bravo's and I know he was trying to sell whatever he had.

[Cooney]

That's right, what was that 4 blade that Craig had, I couldn't turn it either...
Sorry jemccall, didn't mean to hack your thread...

[Bada$$Bullet]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by rocketmanjp &raquo;</td></tr><tr><td class="quote"> If I remember seems like Buddy liked a 30 TXP ot4 on his old rig. I think Kyle has it now or did. Kyle bought both my Bravo's and I know he was trying to sell whatever he had.</td></tr></table>


Still have them all.

[bayoubullet]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by rocketmanjp &raquo;</td></tr><tr><td class="quote">I'm back to my 28 TXP ot4. It is my favorite all around prop. I have a 27 on order cause the 28 is a little much with a heavy load in the summer. If I remember seems like Buddy liked a 30 TXP ot4 on his old rig. I think Kyle has it now or did. Kyle bought both my Bravo's and I know he was trying to sell whatever he had.</td></tr></table>thats a 29 txp ot4 on dlab's boat now. the 30 ran close to the same but the 29 carried a fishing load better

dlab i would try to get my hands on a 27 hydromotive. dedon will prolly bring his to arkansas.

[rocketmanjp]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Cooney &raquo;</td></tr><tr><td class="quote">That's right, what was that 4 blade that Craig had, I couldn't turn it either...
Sorry jemccall, didn't mean to hack your thread...</td></tr></table>

Cooney,

You might have run the 27 Razor 4, I don't remember. But it was the 29 Razor 3 that you ran that big number with and were standing your boat on end with.

[rocketmanjp]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by bayoubullet &raquo;</td></tr><tr><td class="quote">thats a 29 txp ot4 on dlab's boat now. the 30 ran close to the same but the 29 carried a fishing load better

dlab i would try to get my hands on a 27 hydromotive. dedon will prolly bring his to arkansas. </td></tr></table>

Hey Buddy,

Is the reason the 29 carried a load better because it put the motor in a stronger RPM band, or was there just a different tweak in the 29 like you typically get from prop-to-prop?

[DLAB]

Well im not Buddy, But the 29TXP definately carries a load! The holeshot isnt as bad as im making it out to be, but i think it could be improved, From 60-80+ it comes alive! I still havent had tha balls to trim it out yet,just getting the feel for it, but LOADED 2 people,livewells full, Ice and drinks in tha box, and Full tank of gass it still gets up and Rolls.