speed of old f302 vs 35 0r 38 fast.. with same power
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speed of old f302 vs 35 0r 38 fast.. with same power
i know some with a f302 dynoed at 515 apiece ( 1030 hp ) with trs drives running 65is on gps. the question is i seen 35's and 38's fastechs with twin 525 mercs running alot faster then 65.. why? i know its alittle more power but there bigger boats. is it because the hull design? the trans and trs drives? or weight?
was thinking about going to xr drives in my f302 and eliminating the trans. one less problem to worry about not afraid of moving the motor or redoing the transom. i really dont want to pay for kondrads either.
will moving the motor back hooked up to the xr make me faster since more weight will be in the rear and less power has to go thru a trans?
thanks!!!
was thinking about going to xr drives in my f302 and eliminating the trans. one less problem to worry about not afraid of moving the motor or redoing the transom. i really dont want to pay for kondrads either.
will moving the motor back hooked up to the xr make me faster since more weight will be in the rear and less power has to go thru a trans?
thanks!!!
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i know some with a f302 dynoed at 515 apiece ( 1030 hp ) with trs drives running 65is on gps. the question is i seen 35's and 38's fastechs with twin 525 mercs running alot faster then 65.. why? i know its alittle more power but there bigger boats. is it because the hull design? the trans and trs drives? or weight?
was thinking about going to xr drives in my f302 and eliminating the trans. one less problem to worry about not afraid of moving the motor or redoing the transom. i really dont want to pay for kondrads either.
will moving the motor back hooked up to the xr make me faster since more weight will be in the rear and less power has to go thru a trans?
thanks!!!
was thinking about going to xr drives in my f302 and eliminating the trans. one less problem to worry about not afraid of moving the motor or redoing the transom. i really dont want to pay for kondrads either.
will moving the motor back hooked up to the xr make me faster since more weight will be in the rear and less power has to go thru a trans?
thanks!!!
Anyway, it came with 330's, and stock it ran a solid 60-62. Remember, back in the the day, there wasn't much choices in props, but I had the cleavers tweaked a little, different air cleaners, and elbows for thru-hull, and with a light load, I could get close to 64 with a light chop. Ran it that way for a couple of years, and it was bullett proof.
I then had some 4-bolts made to just over 420's spec made up at some place that Gary Stuewe recommended, and it bumped up to around 72-74. He had a little Cigarette dealer on Rand in Palatine, IL way back when. Ran great for a couple more years until I sold it, and moved to Cigarettes. Those numbers were with a Nordskog, which was as best as you could get back then.
Regarding speed differences, no doubt the stepped hulls help alot. Also, the Bravos are more efficient than the old TRS's with the trannys. And, prop designs have made a huge difference as well, so they all add up. I will say that I think the 302 weighed a little more than the claimed 7,800 lbs, but it rode like a tank. Great boat.
Last edited by MrMagloo; 08-11-2010 at 09:56 AM.
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If someone had a solid hull with 500's, like Bryan stated, he should definitely be in the mid-70's, or something's not right. Either he's got a seriously wet hull, or gained alot of excess weight some how, and/or the engine, drives, and props aren't up to snuff. I suspect a little bit of all of the above, but something definitely isn't kosher.
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I'd definitely start checking into the motors. With 800 hours, it very well might be time for a freshening or replacement depending on your situation. Then check the weight. These boats are known to have moisture issues. From there its a function of walking through the running surface, props, etc.
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Mookster take a look at my stringer replacement thread and see were all the rot can be. Basically if you can or can not see it.... it can be rotten. They really did a horible job on some of the years in closing off the wood so that water could not get into it.
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