How much HP needed to get 38' to 100 mph?
12-08-2008, 02:40 PM
#31
Charter Mod
Charter Member
The purple one Blume mentioned has #6 drives, and wasn't balanced well at all, which made it porpose like crazy. It isn't a great example to use as a reference. "Hot for Teacher" is the best running 900/#6 TS out there for comparison.
There's a 38TS in California with Zul 750's, XR's, and the extended covergirl cabin that ran 105mph for Powerboat Magazine. Probably 100 most of the time?
A friend of mine has one with Sterling 750's, XR's, same cabin, that runs 100.
The bottoms on these boats are the same, and the difference in the "half cabin" and extended covergirl is minimal.
My guess is that the motors the yellow boat has never made 900hp in the first place? That, or they need to try spacers and different wheels. 750hp a side with a dialed in set of wheels on the correct drive height should get 100+ everytime.
12-08-2008, 03:18 PM
#32
VIP Member
VIP Member
The purple one Blume mentioned has #6 drives, and wasn't balanced well at all, which made it porpose like crazy. It isn't a great example to use as a reference. "Hot for Teacher" is the best running 900/#6 TS out there for comparison.
There's a 38TS in California with Zul 750's, XR's, and the extended covergirl cabin that ran 105mph for Powerboat Magazine. Probably 100 most of the time?
A friend of mine has one with Sterling 750's, XR's, same cabin, that runs 100.
The bottoms on these boats are the same, and the difference in the "half cabin" and extended covergirl is minimal.
My guess is that the motors the yellow boat has never made 900hp in the first place? That, or they need to try spacers and different wheels. 750hp a side with a dialed in set of wheels on the correct drive height should get 100+ everytime.
There's a 38TS in California with Zul 750's, XR's, and the extended covergirl cabin that ran 105mph for Powerboat Magazine. Probably 100 most of the time?
A friend of mine has one with Sterling 750's, XR's, same cabin, that runs 100.
The bottoms on these boats are the same, and the difference in the "half cabin" and extended covergirl is minimal.
My guess is that the motors the yellow boat has never made 900hp in the first place? That, or they need to try spacers and different wheels. 750hp a side with a dialed in set of wheels on the correct drive height should get 100+ everytime.
12-09-2008, 10:46 AM
#34
Charter Mod
Charter Member
It's in a few of those SCOPE videos and runs with a great attitude and flys perfect at speed. I don't know what they did different in the setup from the other two #6 TS guns, but it's the right one.
If he dry sumped it he might gain a little, but I doubt it'd be enough to be worth it on that type of boat.
I'm still amazed it took so long to sell that boat when it was new!
12-09-2008, 12:04 PM
#36
Registered
12-09-2008, 04:23 PM
#38
Charter Mod
Charter Member
12-09-2008, 05:01 PM
#39
VIP Member
VIP Member
12-09-2008, 05:06 PM
#40
Registered
2002 38 side by side 725 cobras, xr's on stellings boxs and the boat runs 104 mph at 5700 rpm also in fresh water. when they first did the sea trial in fl with phil and randy they had the boat running 107 mph, the fastest bravo boat ever at the time.... with 900's the boat should run in the 1teens. most likely never had 900 hp, more like 700-750. the arnesons look nice.
