rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 The transom is 20 inches, and from the cav plate to the top of the mounting bracket is 23 inches, but I've moved it up and secured it with high tensile bolts, so at this stage the cav plate is about 20mm below the keel Link to comment Share on other sites More sharing options...
rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 any boat ive owned even my current 5m boat will do if i trim the nose down at speed, mine likes to turn hard to the right Your issue is a probably mixture of things then not enough hp cav plate too low too much weight in the bow go for a run without your chunky mate the bow will sit higher and not bow steer if that sorts things then you have to distribute the weight more evenly i just reread your first post 15hp on a 4m boat with 350kg in it its never going to perform (2 x100kg people- 45kg in outboard 20kg in fuel and then 30-50 in gear and anchors etc) 25-30 minimum ok lol so the motors to pissy... I'll have to live with it, if I buy a new out board the missus will have one on me, and mArried men out there know no amount of horsepower is worth having a nagging missus Link to comment Share on other sites More sharing options...
Juggs Posted March 12, 2012 Share Posted March 12, 2012 ok lol so the motors to pissy... I'll have to live with it, if I buy a new out board the missus will have one on me, and mArried men out there know no amount of horsepower is worth having a nagging missus well we can try to help you to make the most of what you have take a small esky and you sit on the rear seat and drive and your mate can sit in the middle of the boat instead of on the front seat a small foil or wing will help lift the bum and get you on the plane quicker, you do lose a little top end though and cut down on the amount of gear you take on the day atm this is what i see is happening you take a while to get up onto the plane but as you increase in speed there is too much weight in the front of the boat and its pushing a bow wave in front of it the boat then wants to angle off to one side Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 12, 2012 Share Posted March 12, 2012 your boat might be a long shaft and the dealer sold u a extra long shaft which is 25" Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 12, 2012 Share Posted March 12, 2012 juggs i had a 3.75m allycraft 3 x 100kg adults all fishing gear full 25L tank and it got up and flew along with a 18hp tohatsu Link to comment Share on other sites More sharing options...
Juggs Posted March 12, 2012 Share Posted March 12, 2012 (edited) juggs i had a 3.75m allycraft 3 x 100kg adults all fishing gear full 25L tank and it got up and flew along with a 18hp tohatsu and the tohatsu is a known grunty performer,probably the best 15-20 hp outboard you can buy based on performace it has 2.2kw more and a extra 50cc, if he had the 18hp it may have worked fine a chinese 15hp with a bit of cav plate drag on a 4m boat with too much weight up front will not perform i had a 385 explorer so a vnose punt with a 15 johnson only a few years old 3 (lightweight)guys it barely planed, nothing is equal or comparable in boats the boat planes hes established that, with a bit of weight retribution he may cure the bow steering. i still think the outboard needs to be raised a little more i had a american 25hp merc the leg was well over 20 inches and the serial called it for a long shaft Edited March 12, 2012 by Juggs Link to comment Share on other sites More sharing options...
rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 This is definately a problem and my advice would be to take it to Huey and get it sorted out for peice of mind and if its a lemon....sell it and get one that will do the job you want it to do as you will never be happy. Regards Stewy Thankyou for the suggestion, but I don't have the $2000-$3000 I'll need after I sell my lemon to get a reputable brand. Fishingphase Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 12, 2012 Share Posted March 12, 2012 im still yet to figure out if the motor or boat is faulty here when u said u measured one or the other and it measured 20" what was that the motor or the boats transom? Link to comment Share on other sites More sharing options...
rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 im still yet to figure out if the motor or boat is faulty here when u said u measured one or the other and it measured 20" what was that the motor or the boats transom? These are the measurements, but since I moved it up and bolted it the difference between the cav plate and the keel is about 20mm Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 12, 2012 Share Posted March 12, 2012 that is much better so its the motor at fault by the diagram plus u have "lift" the engine higher than the top of the transom i would say u have a extra long shaft motor which has a leg length of 25inches (short shaft = 15inch, long shaft = 20inch, extra long shaft = 25inch) get rid of that motor mate and get a proper 20inch long shaft motor u can pick up and sell your motor on any online auction site or even free classifieds Link to comment Share on other sites More sharing options...
rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 Any one interested in buying a second hand 15hp motor with 1 year warranty Link to comment Share on other sites More sharing options...
Juggs Posted March 12, 2012 Share Posted March 12, 2012 Shaft lengths are nominally 15" (short), 20" (long), 25" (x-long). In reality short can be up to 17", long is anywhere from 19" to 22". all manufactures measure from differnt points and err on the longer diemension also transom height should be measured on the verticle with a plum not along the transom face having it a inch or two low will not make it veer left or right, that is as long as everything is true and straight where are you located ? i could come for a run in the afternoon and see what can be done will only take 15-30mins Link to comment Share on other sites More sharing options...
abecedarian Posted March 12, 2012 Share Posted March 12, 2012 where are you located ? i could come for a run in the afternoon and see what can be done will only take 15-30mins Now that's worthy of a beer or two! Good man Juggs. Link to comment Share on other sites More sharing options...
rockfisherman Posted March 12, 2012 Author Share Posted March 12, 2012 Shaft lengths are nominally 15" (short), 20" (long), 25" (x-long). In reality short can be up to 17", long is anywhere from 19" to 22". all manufactures measure from differnt points and err on the longer diemension also transom height should be measured on the verticle with a plum not along the transom face having it a inch or two low will not make it veer left or right, that is as long as everything is true and straight where are you located ? i could come for a run in the afternoon and see what can be done will only take 15-30mins Juggs I've pretty much got rid of the veering problem, the tiller still pulls to the left a little but nothing to be concerned about. I've basically put it down to a badly designed hull, if I don't Manage to sell it I will take you up on your offer, thanks Juggs Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 12, 2012 Share Posted March 12, 2012 hey mate look up in your manual the "trim tab" its behind and above the prop this correct the engine pulling one way or another u just unbolt it rotate it a little and it will fix the problem Link to comment Share on other sites More sharing options...
rockfisherman Posted March 13, 2012 Author Share Posted March 13, 2012 hey mate look up in your manual the "trim tab" its behind and above the prop this correct the engine pulling one way or another u just unbolt it rotate it a little and it will fix the problem Hi Gaz What sort of effect does having trim tucked right in produce? And vice versa. There's 4 settings. Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 13, 2012 Share Posted March 13, 2012 tucked right in? i dont know what u mean a trim tab turn left or right to counter steer steering pull say if your driving down the river and shes pulling hard to one side u adjust the trim tab untill she drives strait Link to comment Share on other sites More sharing options...
Juggs Posted March 13, 2012 Share Posted March 13, 2012 His engine doesn't have a trim tab Have the engine tucked pushes the nose down trimmed out it raises the nose Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted March 13, 2012 Share Posted March 13, 2012 ahh yeah your right i just went back to his pictures hmm Link to comment Share on other sites More sharing options...
rockfisherman Posted March 13, 2012 Author Share Posted March 13, 2012 His engine doesn't have a trim tab Have the engine tucked pushes the nose down trimmed out it raises the nose thanks Link to comment Share on other sites More sharing options...
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