RE: K&B 3.5
yes they are meant to slip on and off to replace the trust washer which goes between output shaft housing and the dog drive , the dog drive should have 2 allen set screws to tighten against the output shaft , i recommend a little loctite on each for vibration purposes. the thing you want to watch for is wear in the housing keep it well lubed with water proof grease and a well balanced prop or you are going to go through alot of output shafts , i found out the hard way , i have a k&b 7.5 outboard motor on a prather lap cat 2. well best of luck hope that was helpfull
Posted on: 6/17/2012 8:29 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11121900

RE: radio box servo questions
i believe the yellow thing is your reciever under the yellow balloon , do you still have the radiothat goes with it ? i would put some brand new batterys in , turn the switch on at the servo box , flip on the radio and see what you got working . what kind of boat did it come out of ? it looks like a prather boat from here . if it is i was curoius how the rest of the radio box looked like , i am rebuilding a prather lap cat 2 tunnell hull , and my radio box didnt come out the guy before me epoxyed it in place , if you could take a couple of pictures of it to see if i am on the right track . i hope i answered your question , the main guys here will get you straightend out , i if i was wrong . was i guys ?
Posted on: 3/31/2012 11:03 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11023224

RE: chainsaw vs zenoah
i was at model power boat and saw this about chains saw motors it looks pretty awsome too me http://www.modelpowerboat.com/content.php?134-watercool-an-engine
Posted on: 2/20/2012 3:33 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10968080

RE: turning fin
the run you seen , i just got done lowering the motor a 1/4 " inch, i started the day 1/8 " above instruction specs for motor ht. and was dropping it at 1/8 " increments, when it flipped over, i was like yeah it did something different , i took it as a sign and called it a day. yes it was a little rich butt i could never get it to plane right to warm it up and fine tune the carb. oh yeah i even tried adjusting the neg. & post. tilt on the motor, a guy suggested while i was there. i want to thank you for your help ,
Posted on: 1/17/2012 10:32 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10913618

RE: turning fin
ok sorry about that my first time uploading anything to you tube , got the title and description backwards[ http://www.youtube.com/watch?v=cAN5oaHPwqw ][/youtube] ok this should work
Posted on: 1/16/2012 9:46 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10912781

RE: turning fin
hi i finally got a video of my boat and what it is doing , i have tried evrything that was suggested i am at the point where i gonna crack it open and rip every thing out and start all over including the expanding foam that was put in there before i got it and put in a couple of pool noodles, i just wondering what you think of the video and what steps i should try , well it did one thing different this time it flipped over at the end . how do you add a video to the post ? i have it uploaded at you tube under " the yellow dolphin "
Posted on: 1/16/2012 8:23 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10912687

building my first gas boat
hi building my first gas boat . i am using a weedeater motor i have 3 to choose from . my question is what hobby manufactures do i speak with about speacilty parts ? how do i cross match motors specs i have a homelite , a weedeater featherlite FL20 , and finally an old outboard gas trolling motor TOB . thank you for any help that you can give
Posted on: 10/26/2011 1:02 PM by Author "frank haydu" in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10783784

RE: k&b outboard
usually the hgt of the prop is 1/8 to 14 inch above the lowest point at the rear of the sponsons. you should have neg. angle and c/g should be 25-30 % foward of transom , basiclly you wigh the boat complete even fuel, then measure the entire boat from rear of motor to top of boat. with that multiply that times 8 then multiply that # by 0.30 , with that sum divide it by 8 and that will give you mesurement foward from the ear of the transom. ( if yuor mesurement had a exp. 33 3/16of an inch or 33 3/4 , if you use the formula i gave you it includes it into the mathmatics ) then go fin you a dowel or pvc pipe fasten it to a board and you can use that to balance it, keep the fuel in untill balanced use lead wghts silicone to inside of boat this is information is just for outboards motors , inboards are harder because you have to do this while your building the boat for motor location. i ope this helps and not confuse you more , hit me back what you come up with , later
Posted on: 10/26/2011 12:48 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10783757

RE: Why not to swim after your boat
all i can say is you dont know till you are in that sittuation , why do do we r/c ? because we love it . do let a love one drown ? my love died 40 feet from shore , i threw out my tennis ball to retrive it but was just short of getting it . so i had a friend help me , he was going to rell the boat in after i attached it , but murphys law came into play , when i got to the boat the tennis ball was gone it sank , let me tell you trhe water is much colder in the middle , well i got me and the boat to shore , that was an experince i dont recommend to anyone except your enmy , the only thing i can say IS IF YOUR GOING TO GO AFTER IT COLD OR HOT WATER WEAR A LIFE JACKET
Posted on: 8/31/2011 6:35 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10694858

RE: 21 Tunnel Talk
hi , how much does the NS295 weigh without a motor ? how much with radio, tank and motor ?
Posted on: 8/30/2011 4:14 PM by Author "frank haydu" in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10693963

RE: 21 Tunnel Talk
hi all does anyome here have a prather lap cat 2 boat with 7.5 k& b motor ? i have a problem with it porposing , does anyone know what the weight should be ? and any tips or pointers would be helpful , see i bought it off ebay with the title called basket case . the more i look at other peopls and compare some shapes are different will that matter ? thanks you to all
Posted on: 8/28/2011 4:29 PM by Author "frank haydu" in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10690981

RE: turning fin
thank you for your help , what did you use ( specs please ) ,i a a little lost on the center of gravity , i understand what your saying but just dont know how to find where my center of gravity is , is that with the motor attached or off and what you do when you find it . does anyone know what the boat should weight , without the motor ? or with ? thank you all for your help so far
Posted on: 8/4/2011 5:38 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10654671

RE: turning fin
thank you for your help but the turning fin is not my biggest problem now , i finished the boat and had it out on the water , i must have the only yellow dolphin in the world , LOL . i cant seem to stop it porposing , i have lowered the motor gave it all the neg. pitch it could go added weights . the only weight that worked was a powerade bottle tied to the front and that k&b motor almost shook it free as it took off , any ideas ? oh what should it weight? with the motor attached or with out ? and the instructions was faguie about center of gravity thanks everyone
Posted on: 7/19/2011 6:20 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10628355

turning fin
hi all . i was hoping some one here can help me , with a picture or what to use on a prather boat { lapcat 2 7.5outboard } a turning fin i had this cheesy piece of aluminum , that didnt grab the water at all and i spun out smacking the wall at sunset park in las vegas, nevada , it was so loud it echoed everywhere making everyone to look at their boat
Posted on: 4/20/2011 1:15 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=10473843

RE: what size turning fin ?
thank you for your help , one other questiom whqat does the fin look like ?
Posted on: 1/2/2011 9:48 AM by Author "frank haydu" in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10234059

what size turning fin ?
what size turning fin should i use ? i have a prather lap cat 2 with 7.5 k&b , i am sanding mode , after hitting a wall because i spun out making a turn to sharp. i have been trying to look a pictures to see where to put one , i bought this off of ebay with no instructions, any help will be appreciated !!!!!!
Posted on: 12/31/2010 11:19 AM by Author "frank haydu" in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10229970

RE: hi, need help with a prather lapcat 2
thank you for trying to help me if you need my email it is frank_haydu_jr@yahoo.com
Posted on: 5/7/2010 7:00 PM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=9718040

hi, need help with a prather lapcat 2
frank
Posted on: 3/21/2010 7:05 AM by Author "frank haydu" in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=9599093