21ft Bullet Guys...Your Jackplate hight survey ??

[Chris1978]

Reading another post (and not wanting to hijack it) I got to wondering where guys are running their jackplates on 21footers.

I had always thought on a bullet the higher you could get your jackplate and keep water psi the more speed you would get.

So I am interested to hear your 21footer combs:

Jackplate hight ~ Motor~ Gear Casse~ Prop ~ Speed ~ Rpms


Maybe it will help others too

[mark21xdc]

I'm running a Atlas Hydro plate and run anywhere from even to 1 1/2 above depending on load with a 250 proxs with mods and a sportmaster 1.62 gears, I just put the 300x on and have not ran it but once.

[LarryP]

With anything less than a 300 you need the TM case to make the 21 run. I am currently running 1/4 above but have had it at 1/2.

Most are between 1/2 below and even.

[Hydrilla Gear]

If I told ya, I would have to.... Well....

All I gots to say is ya better bring some cotton balls to stop the nose bleeds

[Chris1978]

Rich, you better start shipping me the cotton balls when I buy my next prop off ya...lol...I think I am up to 4 of your props now...lol...I think

[123trentm]

1 1/2" above seems best for me
Modified 2.5 (horsepower unknown)
coned 200 case
28 txp ot4
speed unknown, but fast enough
6500 rpms so far

[Hydrilla Gear]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Chris1978 &raquo;</td></tr><tr><td class="quote">Rich, you better start shipping me the cotton balls when I buy my next prop off ya...lol...I think I am up to 4 of your props now...lol...I think</td></tr></table>

LOL And from what I see you post it looks like they may be working out for you. I think when you and I both started I mentioned a 28 bravo being a strong runner for a fishin wheel

[Chris1978]

Okay Rich you were right.....AGAIN ...lol...

[21XDC]

1/2- 1 1/2 below with my HPDI LU. I only have 12 in setback. This depends on the load I have and what prop I run.

[250XDC]

3/4 below the pad,sometimes 1', depending on load, 15" setback, 27 txp 4 blade.

[canadabullet]

2002 21 xdc 3/4 below with 29 hydromotive q4x-ob , 2004 250 xs, 1:75 tm..... 83.8 best speed ... Might try higher for light load ....

[2500]

250XS 1:62 T/M (top 4 holes plugged) 14" plate
27 Hydromotive prop, 1/4 below pad, 15 PSI, 5800-5900 R's
80-81 hvy loaded

[PA Officer]

250XS 10" hydraulic plate

When it's nice and I can air it out -- even with the pad give or take a 1/2"

Most of the time, it's burried to improve rough water handling.

Running across the flats, it's jacked up to the max.

I don't think I could survive the waters I fish withou a hydraulic plate.

[tmbullet]

I have an 03 21XD with an 04 3.0 liter 225 EFI 14 inch jack plate at 1 1/2 inches below the pad, torquemaster gear case with 1.75 gears, 28 pitch Turbo TXP-OT4 turning it at 5650 rpm at 82.6 (GPS)with fishing load, no water in live wells and 5/8 tank of gas , I am very happy with my set up...

[70 Mach 1]

300xs with sporty and 1.62 gears.

28 Bravo 1.25" above 25ish psi@wot 89.6@6150. Just got this prop and only ran it a few times.

30 Bravo 1.25" above 25ish psi@wot 93.6@62-6300.

30 Performer 4 BC 1.75" above 15-16 psi@wot 97.1@5900.