Straight Bottom T/G Speeds
 

Post up your Power/drive/speed combos for your straight bottom gun.

Full cabin or cover girl cabin.

how is Bill Procter's spider boat doing these days. Is it still the fastest straight bottom?

Straight Bottom T/G Speeds
 

My 1997 T/G with full cabin, pump out head, 5 adults, 2 grandsons, a pile of Italian sandwiches, a cooler full of ice and drinks, and 3/4s fuel load ran 73mph on GPS couple of weeks back. Powered by 525s/c's, spinning 26p 4 blades on Bravo drives at 5,000 rpm in brackish water.

Whatcha up to??? This will b a fun thread to re-spark after many years.....:food-smiley-007:

Will be interesting to see who is actually running/using theirs and not in moth-balls. Looking forward to see if anyone inputs on the Spider boat. I'm still running Old School, now with fresh Wesco power...1200's on Sixes turning to 6100rpm...can hit 100mph at 54-5500.....just haven't stretched her out yet...seem to always have to take the wife n kid:daz:

97 kevlar 1/2 cabin w/ 600sc w/bravos ran 80ish
2000 straight bottom/full cabin 500efi's w/ bravos ran 72-74ish
2000 TS 1/2 cabin w/ 600sc's runs 90ish

That boat is up for sale - I think I saw it here in our classified section. (The spider boat)

I have a few of questions for you if you don;t mind.
1. What Cubic inch and blower?
2. What fuel are you running @ 1200hp?
3. What props are you hitting 100mph @ 5500 RPM?

We have similar boats, you have more HP, just curious if I do turn up the power in my boat.

598's with M4 procharged...built and set up by Dave at Wesco. They are mildly set up at 1200hp with room for more but not needed and generally they don't feel much different than running the N/A 750's previously in the boat...Nice to be able to change pulleys/boost set up. I run pump fuel with Boostane. Props are four blade, usually 33's or 34's depending on the day, but still dialing in. Had a porpoise issue at mid-90's where it wanted to hop into the clouds unless I drag some tab...wicked/not good....with anything less than a half tank of fuel, it goes away and is on rails...over half tank of fuel throws balance off too far for those higher speeds even with #6's on it.

What are you running in your set up?

[QUOTE=38Raptor;4481392]598's with M4 procharged...built and set up by Dave at Wesco. They are mildly set up at 1200hp with room for more but not needed and generally they don't feel much different than running the N/A 750's previously in the boat...Nice to be able to change pulleys/boost set up. I run pump fuel with Boostane. Props are four blade, usually 33's or 34's depending on the day, but still dialing in. Had a porpoise issue at mid


What gear ratio do the drives have?

Running 572 Cu in with 14-71s, 1000hp. and SSM 5s on boxes. I have bad porpoising also, but not at speeds over 65-70. Honestly, not much seat time at speeds over 90mph.

I have a set of 30s on there now, have not been much over 5000rpm at all, setup to run right at 6000rpm. I think my drive ratio is under 1.5, more like @ 1.4+. Have seen 92mph at 5100-5200rpm with the 30s. I have a set of 32s to try which run a lot better.

I ask about your setup because I would like to set them up to run 1100-1150hp a side, and with the correct props 32,33, or 34p 4 blades, in hopes that 100+mph is easily touchable at that setting. I do run 93 non-ethanol w/ Boostane, probably around 99-100octane in tanks. I only got 15 hrs this season, so setup is not ideal at this point.