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-   -   expected speed increase with 150-200 hp (https://www.offshoreonly.com/forums/general-boating-discussion/26531-expected-speed-increase-150-200-hp.html)

thunderdan 06-17-2002 08:35 AM

Well the rain held us back Saturday and Sunday, so no testing. Hopefully today.

I hear you Joe, but I am hoping that we can knock this piss out of the slip. I have heard that we will pick up anywhere from 400-500 rpms from the 1:50 gears over the 1:36. We were spining the non labbed 32 at about 4900 rpms and the props were not the cleanest, so I think we may have been loosing 100 or so RPMs.

I talked with Herring on Friday and the felt that the 32 was the best place to start.

audacity 06-17-2002 09:16 AM

O, you were run'n NL 32's with .36's and no the .50's right?

thunderdan 06-17-2002 09:22 AM

We ran both lab, and no lab on the 1:36's. With non labbed 30 5250 rpms, labbed all over the boxes, non labbed 32 4900, labbed 32 at 5000.:confused:

This prop/gear/spacer testing is a long process as I am learning....

SLINGSHOT 06-17-2002 01:17 PM

for the record
 
as far as the 88mph for stock. thats what I was told, by numerous people including chip fendt, and I am spinning to the moon with 30p at about 5600 rpm I would like to try some five blades or 32p four blades maybe get a better cruise speed.

thunderdan 06-17-2002 01:29 PM

We got 97 with the 1:5 gears and herring 32-5 blade props, but could only make one pass until we blew an impellor. We are guessing that we sucked up a bag. So we are back in the shop changing out the impellor and going back to do a bit more testing....stay tuned....Oh yeah, and Pat said the boat handled like it was on rails at that speed. :cool:

jdnca1 06-17-2002 01:42 PM

Anyone ever check to see what a 600sc really makes on the dyno? I've always been curious as to if they are making more. :rolleyes: Thunderdan...good luck with your quest to join the Triple digit club. :cool: I'm a cat guy so I don't know your hull that well, but I think you'll get there. ;)

thunderdan 06-17-2002 03:05 PM

For those of you who PM me, when we get our best speed, I will post a picture of the GPS for you all to see.:cool: :D

cobra marty 06-17-2002 04:01 PM

What rpm with that 32 5Blade 1.5 97mph?

hughandlinda 06-17-2002 06:20 PM

Dan there was an article in powerboat mag(i think) that Phil Lipschults got significant increase in mph on a tiger by shortening the water pick ups. I have no clue but you might want to check out the article. Best of luck! Pat will get it right.:cool:

thunderdan 06-17-2002 10:20 PM

I must have missed something Catman, but it is OK. I am used to it. I have gotten 3 pm from people today doubting me. I do have on thing to say to you 3, bite me. I know when my boat is dailed in you 3 will see my transom. Oh and by the way I have a tatletale gps, a garmin 162 gps, and pat had a hand held gps. So yes I have acurate reading.

I guess I get the BS because i was trying to save some other some grief and agravation in prop testing and share my results, guess it was a mistake.


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