bertram31.com

JC

Hello. Please need your help my transmission is gone and I need to find a replacement. Can someone guide me to where I can get one? I know this is an old transmission and not easy to locate. I am in Central America but could bring from the US. Thank you,
JC

JC

UPDATE I got the props and are now on the boat. PROPS are 21" x 21" with #3 cup. Michigan Wheel HyTorq MY-T4 NIBRAL I could not fully test but the initial tests are very encouraging. I had decided to acid wash the heat exchangers that same day before sea trial once I went up on revs i was leaking wa...

JC

Thanks for your helpfull answers. I agree my goal is to have one knot for every 100RPM increase after 2000. The boat really doesnt like the 1500-1800 rpms range.... thats when the engines area really working to bring it out of the hole... Ill let you know how we do. Props shiping out of Miami next w...

JC

Thanks Tony. You dont have a tower on your boat? Interested in knowing what your cruise speed is with a 23 pitch. You must be light in order to reach 2600 with that pitch? EarlyBird. Same question. What is your cruise speed ? You did find the DQX performance to be bettere? What were you running befo...

JC

I really hope I didnt overdue it with going down both on pitch an cup. I need to go up to about 2650 max. Will see.... Engines rated to 2600RPMS...

JC

JC

OK. I paid for my new set today. Went with 4 blades Nibral 21" x 21" and a #3 cup instead of #6. Will let you know once they arrive here and we seatrial how well we all guessed. :shock: I hope we guessed right. Nobody wanted to commit without an accurate weight so I kind of just went will all commen...

JC

Thanks Carl and Tony for your good replys. I have written a request to Lauderdale Props in Florida to see what they suggest but I think I will do as you say and better call and explain. The boat is definetly overpropped... i knew immediately when we hit 2200 rpms and were doing 24 knots. My target i...

JC

Hello Guys. Hope you are all doing well. I am currently in the following situation. Just finished boat remodel put in a small bathroom and fiberglassed the front plus a bunch of other stuff. My current problem is with propellers. Our boat has a full tuna tower, cummins 250HP 6bta Engines, no Generat...

JC

Thanks Guys. Its been a bit challenging to keep up with the boat here in El Salvador but we really love our boat. Its been loyal to us Allways. Never want to let it go. LOL

JC

JC

Thanks for the Picture Ray. If you have old photos please send. I would really like to make a history book of that Boat. So many Joys.... Thanks for the tip on how to post pictures... here are a couple... dont know why it cuts the picture... if you open in a new tab it shows complete... This is an o...

JC

I appreciate all your help. I finally decided to get the overhaul kits for both transmissions including the clutch plates , seals and bearings. The transmissions have actually been great just one starting to loose oil thru seal (coupling) and I feel they have been thru enough and can fail any day. N...

JC

Any help with a good place to purchase the MG502 transmissions new would be greatly apppreciated. Thank you,
JC

JC

Hello Guys. I have a question for you. We have had a Bertram 31 ("White Marlin") in El Salvador for a little over 10 years. Last year we decided to swap the Cummins 6bta 250hp engines. After a bit of research we decided not to upgrade to higher HP (Yanmars or C Series Cummins) but kept the 250 6bt's...

JC

I also ordered them from Tonny. They are the best. S&B. Highly recommend them.

JC

JC

Thanks Harry. Good observation. I hadnt really payed attention to that but now that you say it I can also see it... My boat is an hour away so I will check when I get there. I have never gotteh this far "into" the engine. Normally I have only had to do minor stuff like changing filters, impellers, s...

JC

Hi all. Thanks for the very usefull information. This is my situation at the moment..... I have the case open with forward, reverse and output assemblies out.... everything is cleaned up.. did find tiny ground up pieces of metal trapped in the screen and inside of the case but I cant say it was alot...

JC

Have TD 502MG attached to Cummins 250HP 1.5 gear ratio. Had trouble with the gear while backing down at the dock... the gear started making this metal grinding sound.... So I stoped the engine and checked for fluids etc..... Everyting looked OK. No noise in neutral. After some thought I then decided...

JC

Thanks for your answers. I went thru the posts and this is definetly a good starting point. So my logic tells me 1) I should first try to hot wire the shutdown selenid and give this a try to see if it is an electrical issue. Would this be the only electrical issue to be concerned with?? 2) In case 1...

JC

Hi. Have a Bertam 31 with Cummins 250's 6bta's. My port engines has been reacting strangely. Has the following symptoms.... When starting cold the engine will fire right up.... after engines get up to crusing temp and after a while of use if I come back down to idle RPM's and go from forward to reve...

JC

Anybody have a practical way of crimping 8 gauge wire?? Have tried to lcate a crimper for 8 gauge but they all seem to run 10 and upwards. Any ideas??

JC

JC

Heres a couple of pics..... Juan our helper with a stub that was cut from Shaft http://img.photobucket.com/albums/v436/40mahimahi/.jpg Boat Before http://img.photobucket.com/albums/v436/40mahimahi/Before1.jpg http://img.photobucket.com/albums/v436/40mahimahi/BEfore2.jpg Boat After http://img.photobu...

JC

I understandt. I will not risk the boat or crew if things arent done right. I think I know where the problem was. Yesterday I asked my captain to take the coupling off and check the face to make sure it was true (straight) He put the face over a piece of glass and there two spots around the "step" w...

JC

Thanks for your inputs. That helps alot. When I put the shaft in the fisrt time the shaft was too long so I had to cut a piece to be withing the 1.5 inch tolerance between strut and prop. Can this have something to do?? The cut was not perfectly straight. But what aligns doupling with the transmissi...

JC

Finally planning to put boat in the water after 2 months!!!! Replaced broken shaft with brand new aquamet 22 1.5 inch. After I had put the coupling on and bolted to transmission I went back to turn the prop and I noticed there was a bad misalignment immediately. I could tell where the shaft went in ...

JC

You are right Bruce.. the roll I used was about 1.5 inches thick and it is shiny... Should I sand the areas of contact points then?? Can you comment on the commond ground point.. thanks!!!

JC

JC

THat sounds right... I was expecting to hear about a week (7 days) .. the guy here is telling me it would take him around 15 days which sounds like way too much time for me if I give him a written plan ...

JC

JC

SIM.. I believe they have to be connected together because if not they will be 2 big pieces of connected metal and currents could flow from one side to the other. At least that is what I understood... the pourpose of connecting "bonding" the underwater items is to preven underwater current from one ...

JC

Thanks for all the help. I just spent 3 days and redid bonding system... should have known its alot easier with the engines out!!!! ;-) Never knew the body could twist into so many contortionist positions!! LOL The copper nails would all bend so had to use stainless. I just have one question now.......

JC

How many days on average to do a complete rewiring?? I have a guy who ive seen here that does a good job but he wants to give me a rate per day.. I will negotiate amount of days... Thanks for your input...

JC

JC

Hi. Can someone tell me what the cost of a new PVC guard rail for B31 is??

Thanks,

JC

JC

Thats correct. Yes its the stainless stell cape that goes around the rail. I wanted to take it out so that i could sand the rail and paint with no obrsuction and then put it back on/

JC

JC

If I understood right it is not possible to remove the shiney metal strip and put it back on?? Sorry to be such a pain.. I just bought all the materials and was going to take of the small rail sand the base paint and put the rail back on but if you say it wnt be possible to put the rail back on I wo...

JC

WOW!!! THanks for that detailed answer. That will help a bunch. I owe you one. Maybee you want to come to El salvador and Ill take you fishing ;-) Thanks Patrick.

JC

JC

Thanks for the advice!!! I wont take it out then untill I get some PVC railing on hand. The metal shiney strip on the rail has some space at some spots with the base of the guard rail...this traps saltwater all the time and looks crappy... Can I take of the metal shiney strip to sand down the base a...

JC

Since I will have my boat on the hill for some days..... http://img.photobucket.com/albums/v436/40mahimahi/DSC02048.jpg I was planning on doing some other improvements on the boat ....apart from the bonding system I am doing a complete rewire and try and fix the guard rail on the boat. On the rewire...

JC

Anybody have any pictures of an installation???

Thanks,

JC

JC

Thanks Patrick!!! That helps allot. I will probably pm if I have any specific question. I found this at consumer marine but I see its 2 inches wide.. can I just cut it out?? http://www.consumersmarine.com/graphics/products/medium/880001M.gif Copper Bonding Straps 2" x 100'L Flat Strap Ideal for SSb ...

JC

Thanks for your answers. am interested in doing this right. Can someone suggest a place to buy the bonding strap and lenght required?? I am in Central America but my partner Andre lives in Baton Rouge, Louisiana and can help out. How about hardware? All bolts should be bronze right?? How do you fix ...

JC

I need some help. Attached some pictures of the horror I found last time I was at the boat and opened the hatch. All bonding cables where cut out at the connections and water leaking from the rudders... Deciced to take the boat out on a lift and take all the time to fix it as I am tired of problems ...

JC

Got the shaft out. The break was right at the front end of the prop. The shaft is 1.5 inches and the distance from the strut to prop was 1.69 inches which is a little greater than the recomended. The break looks like kind of dull like a weld looks. Ill try and take a picture. I measured from fron en...

JC

OK. Sorry not enough info. My engines 2506btas, transmissions Twin Disc 502's , props nibral 21 x 22 4 blade, B31 Sportfish with full tower....yes the broken shaft is also 1.5 inches. I havent "seen" the damage yet as the boat is still in the water. I understand from my conversation with one of my m...

JC

Had my startboard shaft break on saturday while comming back from a fishing day. Nos a great day. =( I wasnt on the boat just my captain with some custumers. He said all he heard was some vibration that was increasing and he then went down on throttles to see what had happened. So they went in the w...

JC

Hi There. I am tryig to put in a head in my B31 Sportfish. I want it to be simple and functional. I was thinking of installing in the front cabin?? What is your recomendation and what is a good and simple mechanical head to use. What else do I need to buy?? Macerator pump??

Thanks,

JC

JC

Hi There. Happy thangsgiving!!!! I am in a different country but lived for a while in Baton Rouge, Louisiana so I can remember the good ol smell of turkey, sweet potato pie, and all the other goodies.... Lucky you.... I have a question regarding an installation... I am in the process of having an el...

JC

I am trying to decide what to do. As allways living far away from where we purchased the props is not very helpfull... Taking the props out ...inside the water can be a pain in the but but If I have to do it I will.... my guess its the shaft thats the problem.. I dont think the taper is wriong I thi...

JC

I have 1 1/2 shafts..... The props I got are Hy-Torq for 1 1/2 shafts also... The shafts are both 1 1/2 ...on the port side the prop sits in well...the nuts gets a good grip and tightens well (took me about 30 minutes with extractor to take out) on the starboard the problem is it fits well but the s...

JC

Went in last friday with scuba tanks to change props with brand new ones... First thing that was obvious to me is the sbd nuts were loose and the prop too... came out by hand and not with an extractor!!! I tried to figure out what is wrong and decided I was going to put in a new key I have because I...

JC

Thanks. Check out this video.. not a happy custumer...

http://www.youtube.com/watch?v=K6TaYmrd2I8

JC

JC

Hey Brian. Is it a Twin Disc?? I know an american guy here who redid mine with 0 problems...

JC

JC

Hey guys...though you might like to read a report about a B31 fishing in El Salvador.... http://www.sportfishermen.com/board/offshore-fishing-world-wide/el-salvador-xii-anual-intl-marlin-tourney-amazing-14713.html We had some amazing action.... 18-20 marlin raised behind the boat....12 strikes and 6...

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Search found 85 matches

Twin Disc MG502 - Help

Re: HELP with Props

Re: HELP with Props

Re: HELP with Props

Re: HELP with Props

Re: HELP with Props

Re: HELP with Props

HELP with Props

Re: Changed 6bta Long Blocks- Now What?

Re: Changed 6bta Long Blocks- Now What?

Re: Changed 6bta Long Blocks- Now What?

Re: Changed 6bta Long Blocks- Now What?

Changed 6bta Long Blocks- Now What?

Twin Disc 502 - Noise in forward and reverse

Engine Stalling Low Revs

Crimping 8 gauge wire

Help with new shaft/coupling/alignment

Cost of B31 PVC Guard Rail

While Im at it...

Bonding Help- Learning the hard way...

Need Urgent Advice on Shafts

Head

Electrical Question- Switches yes or Not

Have a prop problem...

Only B31 in El Salvador Marlin Tournament....