bertram31.com

bob lico

it will not chine walk with cummins diesels because the chines are under water doing what they are designed for.

bob lico

mike that commercial box has a 500 lbs capacity and you fill about 3/4 full ice and salt water roughtly 400 lbs. the datum line would be about 3' from bilge that is a 1200 foot pound center of gravity change to a 31 Bertram so it would increase roll but help centerline balance with 4cyl yanmar engin...

bob lico

your ok at 2500 rpm but that is the bottom of the 454 torque range,with engine box cover off and you slowly apply throttle at what RPM does the secondary of the four barrel carb. open? you can both hear it and feel it.keep the boat just under secondary opening if you want to increase cruise at the c...

bob lico

tony 26 knots is the "golden " speed fora 31 Bertram she starts to ride on her strake and the area between strakes gets air and the boat becomes more efficient at 30 knots you feel like your on railroad tracks (provided the chines are in water) and the boat steers differantly. we get her on top and ...

bob lico

provided the weight is aft of the main bulkhead or in a Bahia Mar 6" forward of engine box engine and gears ready to run Must weight at least 1100 pound each to bury the reverse chine ,not a opinion this is fact as tested on travel-lift numerous times .Anyways good luck and have a great summer.Raymo...

bob lico

i have fresh water to the head so i use more water than a nnormal 31. i drilled an installed a 1/2" vent hose and a 5/8" fill hose to tank than ran both lines to forward cockpit hatch with a male hose bib on water intake. i fill until water comes out the vent hose to tell me tank is filled. dragging...

bob lico

keep in mind by placing the ice,salt water,fish below the cockpit you also make a tremedous effect on roll . the weight is spread out evenly on both sides of cockpit and plants those reverse chine evenly in the water along the cockpit waterline.another major reason is the direct sun,heat on the enti...

bob lico

these are the largest boxes you can possibly fit in a 31 bertram. i remove cockpit support beams and replace with cockpit beams touching fuel tank and upright supports directly under the beams the OEM were offset so i gain 1" the entire box next there is another stringer about 1' from chime so with ...

bob lico

the most important factor here is the kill boxes under the deck are number one out of the way while you are fishing,number two and perhaps the most important is with just two bags of ice in each and a gallon of salt water you make "salt ice" with just 1/2" of solid insulation around boxes the fish g...

bob lico

my "kill boxes" are double the sise of a 50' Bertram /Hatteras ! why don`t you do a search

bob lico

no CRS symtoms until you missed the correct exit on your way to work or going home. at least twenty years for that to take place.most likely to forget where you put your damm keys or the wrench you just had in your hand.BTW 30 microns is correct for primary 500 raccor.

bob lico

Gotcha and agree 100% i would never own a gas generator in your case a inverter is perfect.

bob lico

good point carl but keep in mind there is a "happy medium" that is a 2.5kw generator along side port engine.ASSUMING every 31 Bertram would never put waste holding tank in cabin and they did do the right thing and place alongside starboard engine on shelf.

bob lico

i will lay out the whole job with your input as to the A/C circuits needed as well as the all important ground isolated.really makes it easy when you can actually see the work rather then some dude in front of a class giving a speech and most going over a laymans head.

bob lico

are you willing to drive to Bluepoint, if ou are i will show you (hands on) with my boat and explain every detail as well as make a wiring diagram for you.monday or tuesday next week or just call me on cell.

bob lico

bob lico

i will definitely go with peter that 21" gunnel height is a huge advantage bringing a tuna over the rail and releasing a fish that is very weak and you help it get water thru it`s gills.i removed my panels in the cockpit entirely. rather silly why not add 18" to cockpit and perfect place to put your...

bob lico

long story no need to get into details let`s just say i have driven 1000 boats in the last 20 years . i was obligated with a captain`s lic. (to make it legal for boatyard) and free slip also to pull my boat out and put boat back in 10 times a season.So the salesman would get in the boat and i would ...

bob lico

john i have the same problem Annapolis rendezvous is the identical dates of Greenport ,NY Bentram factory sponsored rendezvous.

bob lico

very nice and practical

bob lico

all is well that ends well !

bob lico

year mike i have a 3db with A/B switch along with 9DB but have never used it.the hand held is convient and on dashboard.i also get 30 miles with the 9DB. mounted on the side of bridge with upper and lower mounts for strenth and 4' extra height over gunnel mount.

bob lico

very happy with 23' - 9 db as main antenna and a W/P hand held for bridge opening and rara alongside conversations. offshore 100% 9db

bob lico

wow hit that at fifty miles a hour ------ouch!!

bob lico

i went to Keyport NJ to help a friend with 32' regulator with twin 300 hp yamaha for power. we lost both engines about 4 miles out so i found the problem to be forward tank (never used) had water so we empty the water /fuel seperators and got one engine to idle. oh well lets idle back and fix on lan...

bob lico

ok got it-----go fo it

bob lico

hold on brother there is no need to idle at 800 rpm.bring her down to 625 RPM much,much better trolling,docking.

bob lico

31 Bahia Mar with 270hp Cummins-------it don`t get better then that. is john doing the installations?

bob lico

greenport ny rendenzous this year sponsors (you know they serve the best food and fine wines ) BERTRAM annouced the date today the place will be Mitchell Park, Greenport NY. on Sept. 6,7,8 . Phoenix.will be there for sure.

bob lico

BTW Carl one of the huge advantages of using Twin Scan gauges is as soon as you jump on bridge to move boat or do anything you cannot avoid seeing the twin Led lit indicators on the gauges showing one engine not running because gauge panel has power so alternator (voltage output) will be in default ...

bob lico

carl on this one i have to say differant strokes for differant folks. those 1" diameter red lights above the cable are annoying as hell and you are constantly reminded the damm trolling valves are engages.keep in mind 783 pounds of insant torque is availuble when you hit one motor in a emergency tha...

bob lico

600 pounds wow that is over the "top".real hard to be humble after fishing a 2018 Henriques 50'

bob lico

not only premature wear but you could actually burn out the transmission if you raise the rpm of the engine as to go on plane or most likely forget you have trolling valves engaged. most installers use a red light above the pull/push cable to indicate trolling valve engaged.

bob lico

trolling for bass is a very small part of the fishing season.i cannot get myself frustrated as to the minimum speed of my boat.thanks to peter, charlie i started to learn livelining for big bass. during the season i go out and look for the idiots in the center consoles chasing the active pods of bun...

bob lico

you have to establish the Cummins engines you have however if they are indeed vintage 1990 CPL 970 we have to treat them as 250 hp max! never exceed 2600 rpm. i will teach you a step by step procedure on how to reduce the engine idle.number two putting a 5 gallon off the transom is totally useless I...

bob lico

the gear ratio could be 1.75 but the use of a ZF 220- IRM with a 2.0 ratio would indicate the PO. purchased a used engine out of another boat and just used the gears that were on it like a 38' or larger or heavier.

bob lico

i am not going to bombard you with questions however it is important to establish the engine specifications before giving any advice. when dealing with Cummins 6BTA engine we must concern ourselves with three criteria, engines produced before 1992 (Cpl. 970) they were rated at 300hp and 250,210. thi...

bob lico

ok, Yannis this is a better way of explaining. I am referring to increasing the volumetric efficiency of a marine diesel engine. basically the more air/fuel you can stuff into the cylinders the more power you will achieve. we already have a turbocharger to increase our volumetric efficiency but if w...

bob lico

of course, it dissipates there is an increased diameter "hot pipe" from the output of the turbo .back pressure is almost zero. the blanket helps increase the scavaging effect and the Cummins owned Holeset turbo is one of the most reliable in the world. the pyrometer never exceeds 850 degrees. Most i...

bob lico

bob lico

yes, definitely a fire hazard. the grey blanket in the upper right was made by Paul and the blanket is stitch with SS wire, very neat and clean. let me post an old photo of the port engine blanket is easily seen.please click on photo to show entire engine. https://i140.photobucket.com/albums/r21/Bob...

bob lico

thank you carl for the enlightenment!!! normally you would have a multi-collection of boat performing a different function. 31 Bertram and twin 300 Verado on a custom 28' cigarette offshore race boat turn into a center console.i would be damn if i purchase another 31' Bertram even if it was a deal. ...

bob lico

paul the owner at marine manifolds located in Farmingdale, Long Island, NY has all you need.i have them on Phoenix for 13 years.

bob lico

I am confused, did you not have a new building with a 34' Hatteras inside in a photo. you sent to me concerning my Corvette.

bob lico

higher HP. yes but cruising at much lower rpm for maximum fuel economy and on a long term engine longevity running 22% off the pins.

bob lico

on the calculator, 78% power will make 27 to 28 knts. fuel economy is exactly the same as 26' regulator with twin 150hp yamahas however i can go in the cabin, sleep,make coffee,and heat up a bucket of KFC.and sit at a table and read the papers or i can i take a dump in a porcelain toilet. wot is 34 ...

bob lico

forget all of my post above counterrotating engine is not what i had in mind all bets are off.I am in disbelief A speed shop/machine shopwould go along with this.

bob lico

carl are you saying john had a 496 big block built in counter rotating ? i have no knowledge of a roller cam or any performance camshaft for a counter rotation big block.that is really old school i doubt any engine builder would recommend one.

bob lico

the 72c-BW velvet drive will not hold up to 525 pounds of torque .what i should have said in the above post is ZF-220 IRM ---clockwise and counter clockwise depending which direction you push shift lever,make sure you check BEFORE hand you do not want to PUSH shift lever for forward you have to PULL...

bob lico

ok listen up rather confusing. ZF has no dedicated forward and reverse move the shift lever one way and output shaft moves clockwise and move shift lever opposite direction and output moves counterclockwise. SO buy ZF- 220 IRM then bring 33C shift cables down to gears turn front shaft and watch OUTP...

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