Re: Motor setback on OB Cats...
Originally Posted by X-Rated30
I am not interested in changing my boat, so much as I am with Tantrum and find it an interesting topic.
Or at least that WAS true until you said you picked up 7mph. :D |
Re: Motor setback on OB Cats...
Another good question? What kind of slip numbers are you guys running? I dont have that much experience with these boats either and am still learning. Maybe this is normal.....but in my boat I can hit the rev limiters with 4 people, fuel, cooler etc.. just as fast as I can with just me in the boat. The difference is the speed but rpm stays consistent. I trim the boat the same every time...Level with the bottom to get the rpms up and then slowly touch it down to negative trim.
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Re: Motor setback on OB Cats...
Originally Posted by mmwalters
The problem becomes, you have a fast boat that will not run in rough water.
Why would more setback hurt in rough water? As long as you don't have the motors trimmed too much it should fly thesame as long as it is still balanced (shifted some other weight forward). |
Re: Motor setback on OB Cats...
Originally Posted by X-Rated30
:confused:
Why would more setback hurt in rough water? As long as you don't have the motors trimmed too much it should fly thesame as long as it is still balanced (shifted some other weight forward). That said I believe a 6'' setback would present little problem on a 30' hull, maybe as much as 10'' would work depending on your hull. And adding some weight forward is an acceptable way to help balance the boat, lead shot works well. Ideally one would want the boat as light as possibile that would carry the nose with as little trim as possible and fly level in the rough. Every setup is different and only testing will reveal which setup is best for your rig. For me that is part of the fun! Also prop rotation can be a factor, but that is another discussion |
Re: Motor setback on OB Cats...
Dreamboater With a good setup slip factors in single digits are possible and 10% would not be out of line. I had the same situation as you regarding the rev limiters on the promax. I had Rapair bump them to 6700rpm. Picked up a couple of mph so far, maybe more is left with the prop work from throttle up I have not tested yet. I will let you know
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Re: Motor setback on OB Cats...
You need to ask yourself where are you going to be running the boat. If you are doing alot of lake boating run the jackplates. If it is ocean boating bolt those engines to the Transom. Less top speed but better Rough water handling. I run a 24 Skater and I am running BOB's marine 3in spacers. If you are going to due jackplates I recomend CMC. Plus they are made in Oklahoma :D
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Re: Motor setback on OB Cats...
Originally Posted by apache21
Plus they are made in Oklahoma :D
:D :D :D |
Re: Motor setback on OB Cats...
I guess I am still a little passive aggressive about the NCAA Championship this past year. :mad:
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Re: Motor setback on OB Cats...
A boating buddy of mine has 10 inches of set back on his 26 eliminator daytona with 300X's. His comment was that the boat runs 6 mph faster than just with jack plates ( 113 vs 107) and actually, once he moved some stuff around to rebalance it runs better in the rough now.
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Re: Motor setback on OB Cats...
CMC makes a plate that all the offshore racers use. It has 2 1/2'' of adjustment 5 1/2'' setback and heavyduty components. That is the one to use.
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