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25 checkmate convinsor 1991

C

chaos91

New member
boat has a 509 ci motor with a weind 256 blower,lightning headers,motor makes 797 hp on dyno with 760 lbs tq at 5800rpm,running imco drive with 2" shortened lower,30 pitch 4 blade bravo1 labbed, imco hydraulic steering and k planes. i cant figure out to add pics if anyone can help would be appreciated
 
jammasterj787 said:
did you get the shorty drive after the mods ? how much diff did the boat ride with 2 inch's gone ? what kind of speed@rpm
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the drive was done at the same time as mods,stock bravo blew up on first run with new motor,as for ride not noticable,the boat runs 91 at 5600 rpm.the 4blade prop did change the ride for the worst,but looking to correct over winter with prop adjustments by b blades.
 
mmhhughes67 said:
what reaction did your boat have to the four blade ? what is b-blades recomendation ?:brickwall:
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The boat rides with the transom up high and not enough bow lift more so in rough water,b blades wants to change the cup design and they say that will change the ride back close to the way it was,the other issue is the boat torques up on the side and the port side tab must be down to keep boat level b blades also claims there adjustment will help.the best thing about this prop is boat is very stable at high speeds,and comes out of the hole great,compared to 3 blade with the shortened lower.
 
chaos91 said:
The boat rides with the transom up high and not enough bow lift more so in rough water,b blades wants to change the cup design and they say that will change the ride back close to the way it was,the other issue is the boat torques up on the side and the port side tab must be down to keep boat level b blades also claims there adjustment will help.the best thing about this prop is boat is very stable at high speeds,and comes out of the hole great,compared to 3 blade with the shortened lower.
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what colors is your boat and what areas do you use it,is your boat stock or any mods/pics.
 
It sounds like you have a totally different problem then i do? my boat porposes, but i have come across some helpful threds and talked to quite of few people with alot of good info to resolve my problem along with proping the boat correctly. my boat is all white with black and gold striping, a modified 502 with stainless marine exhaust. we have not been out alot this year but i have been down to dobbins a few times, rockhall, and cambridge for the races and up in the patapsaco and bear creek. Iwill try to post some pics soon.
 
mmhhughes67 said:
It sounds like you have a totally different problem then i do? my boat porposes, but i have come across some helpful threds and talked to quite of few people with alot of good info to resolve my problem along with proping the boat correctly. my boat is all white with black and gold striping, a modified 502 with stainless marine exhaust. we have not been out alot this year but i have been down to dobbins a few times, rockhall, and cambridge for the races and up in the patapsaco and bear creek. Iwill try to post some pics soon.
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im at dobbins quite often,theres usually my boat,my fathers,red,white and black checkmate,my friends black,red and white checkmate,my uncles 99 white purple,pink checkmate,friend all white checkmate,and friends white and blue checkmate,all the boats are 251 exept the 99 you should come around next summer the more checkmates the better.
what horse power,gear ratio,speed and prop size?currently running
 
I probably seen you guys there, the boats youve discribed i think i know those guys, plus i have a couple of friends who also own c-mates !
 
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