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up graded to GTR 40!!! http://mudmotortalk.com/mmt_v2/viewtopic.php?f=17&t=74654 |
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Author: | bigchillin83 [ Wed Oct 23, 2019 9:23 am ] |
Post subject: | up graded to GTR 40!!! |
Hello all im new to the site, hope to learn a lot also cause im new to surface drives... Just wanted to share some of my experience's with my new rig boat hasn't changed a bit 17.6"Lx44"WX18"H 1/8"T crawfish pointed aluminum skiff, 18gal alum tank up front( I know way to big),front hatch, 1/2' plywood floor, 6 coats of gatorglide(like that matters) if I had to guess the boat weighs in around 500lbs empty started out about 6 years ago with a 23hp longtail godevil... was a very nice set up.. had a lot of bottom end power but lacked top end and with a load.. Best I ever got empty was 21mph deep water and loaded 3 men and hunt load around 17mph deep water... Needles to say im young and wanna go faster upgraded to a 2016 25hp Subaru Gatortail EFI 80hrs on it.. and wow this thing was night and day in driving compared to a longtail!!! Not as good in bottom end torque but rolled on top end better... I was seeing 25/bumping 26 empty @3920rpm and 22 deep water with a 3 man hunt load.. Again the handling in itself was worth the change not to mention the speed increase now I have a brand new Gatortail 40EFI with 3 hours on it now....All I can say is wow!!!! This thing is an absolute beast!!! I cant even explain the bottom end torque and top end speed change... Best way I can compare it is to a 100lb fella on a YZ125 dirtbike who knows how to drive it... LOL... Empty I can get it up on step in less than 50ft and be rolling... I haven't tried it in to much shallow water but a good bit if vegetation, 2ft tall hyicens lilies ect.. Best speed I have gotten out of it is by my self 33 bumping 34 in deep water @4740rmp, and ran it with me,wife, 3 kiddos, 45qt rtic full of drinks and snacks, 18gal tank slap full and was able to keep 30mph bumping 31 @4760rpm a couple times... This thing is night and day diff in beast mode!!! Only issue I am having is being able to handle deep water turns, lol I guess im just not used to going 34mph in that boat and trying to turn it vs 24mph, guess I just need to slow it down in the turns cause it either power slides or wants to "hook turn" or bite.. I mean even with the family load I was able to keep 29.5mph in the hyicine lilies for well over a couple hundred yards and this thing didn't even check up... I even stopped in the thick of it just to see how it would do they were about as tall as my sides on the boat around 18" and I just trimmed down and hammered on it and it just went into beast mode!! Straight savage... I have a couple questions for yall professionals, Im running a stock 2 blade and 75% of the year its in deep water and the other 25% its in south Venice.. I know the 2 blade would be king down there for hunting but how much gains would I see on a 3 blade? can I turn a 3 blade merc? 3 blade merc worked? gt 3 blade worked? Just now sure about what the Stock 40 can handle.. and don't wanna fork out $400+ for a prop to find out it wont work. I am hoping a 3 blade will take the little bit of tiller torque out, gain a little speed and take and be a little easier on my motor... Also I have seen mixed messages on this question my transom is 10deg and was at 21.5".. I cut 5/8" of and put it in the closes pin to the boat and it seems to run great only issue I have is it seems as if the front end wants to bite a little on a turn and hook... is that just the nature of this beast ride or would adjusting that have any effect on it? I did wedge the motor/transom the other night and put it in the factory 3rd pin from motor and trim motor back to correct height and the shaft angel was the same, so I put it back to flush on 10 degree transom and 1st pin by transom. I just didn't know if something with my set up is causing it to bite on a turn, Do I need to move more weight to the back? Or is that jus the nature of the beast of having a crawfish skiff going 34mph... Thanks in advance fellas for all your help and look forward to the new forum |
Author: | delfate16 [ Fri Oct 25, 2019 7:53 am ] |
Post subject: | Re: up graded to GTR 40!!! |
I've got a stock 40 HDR that came with the raptor 3 blade. I will be corrected if I'm wrong, but I believe a stock 40 can turn a 3 blade merc with no sweat. With the 3 blade prop you will feel a lot less vibration in the motor, but as far as tiller torque goes, it'll still be there. Turns at speed will continue to work the shoulders, chest, and back out. |
Author: | Wchauvin [ Fri Oct 25, 2019 8:23 am ] |
Post subject: | Re: up graded to GTR 40!!! |
The merc 3 would be fine at 11 pitch. Anything over that, you won’t be able to turn stock. If you are turning 4700+ with the stock 2 blade, I would add an inch of pitch and get it worked, you would see a gain in top end and still maintain a good holeshot and load carrying because you would be pushing around 4400 rpms at wot. As far as the hooking, that is to be expected with a crawfish skiff with that lower rake. That’s the nature of the beast with a skiff. I had an 18x48 crawfish skiff that was nice as could be, but that was one of the reasons I sold it. Be very careful with passing people up or with a cross wind, because that skiff can get away from you very easily, and once it bites, you are coming out of it. |
Author: | dead animal [ Fri Oct 25, 2019 5:39 pm ] |
Post subject: | Re: up graded to GTR 40!!! |
nice rig! keep an eye on the valve lash if you bump the revbox a lot. mine hits around 4830 or so and I hit it a lot. lol |
Author: | WhoDat88 [ Fri Oct 25, 2019 7:39 pm ] |
Post subject: | Re: up graded to GTR 40!!! |
That 40 GTR can get it done |
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