I have a new 35 MB on a 1744 Gator Trax . First time out got 24.5 two men no load. Went out this morning three men and decent load 9mph . Wonder whats up? RPMs ok

The boat never got up on a plane. Try moving some weight around. I have the same problem with heavy loads. Usually I can come to a complete stop, and then give it full throttle to jump it up on plane. If I go to full throttle from a slow idle the boat never gets up out of the water. But it def makes a diff where people are sitting and the majority of the load is. I try to keep the front deck pretty empty and most of the weight in the middle of the boat, seems to work out alright for me.

We did shift load to middle.No help . Can the belt slip on these things. It seems to be trying to grab but just cant get up.

hey man i had the same issue with my mb 35 . give me a call on my cell and i'll help you out with that issue 985-992-6761

Thanks BODUKE I did check for hook in hull, flat as a pancake. Ive got to go to jackson for afternoon, Ill call you later. I give up. Thanks again

Hey marsh bandit talk it up for me I need help. When I talk to Mud Buddy or Briggs , they both say gas problem . Had that checked and was ok. Was running great first time out. You would not believe how slow this thing is now.

Whats your rpms? Possible worn prop? belt shouldnt slip if anything i'd think the clutch would slip but highly douptful. How big are the 3 guys?

what all is in the boat? (gas tank size, batteries, ice chest, etc?)
and what is the size of these people?

have you gone and ran it again with little to no load? 16mph drop is pretty drastic if the rpms are good and the motor isint cuttin out, its gotta be the load....

Sorry guys just got back from taking wife out to eat. 2 men @175 ea. 1 @195 6 gal gas tank,3 doz. deaks,and blind.I guess I should unload boat and try 2 men no load and see if speed comes back up. I cant tell that Ive done anything to damage prop . this motor cant have more than 10 hrs on it

WES ive probly added 300 lb to load since first time out. you may be right. Im going to be sick if this is what i got for 12000. thanks for the help. if yall can think of anything else let me know.

What are the RPM's exactly? How did you have the motor trimmed? What was the air temperature? What about altitude? Give us more clues because that load should be a walk in the park for that motor.

Give us the RPM's wot in neutral and then again wot under a load in the water.

had motor checked by briggs tech yesterday. bumping 3700 out of water ,dont have a tach to check in water.temp 30s last wk. 17 this am. Im in west tn. we're low here.Ive trimed this thing high,low,middle makes no difference. got to get me a tach

how can i tell if ive screwed up the prop. looks fine to me.

you should be turnin atleast 4150 out of water rpms...

i was wrong, called the briggs tech and he said my rpms out of water were 4120 and he was guessing they would be bumping 3700 in water. i was a little rough on motor 2nd time out running in cypress slough, it was some nasty stuff,logs and hard bottom.

bought from kent saxon from gator trax in la.

how is your boat set up (ie flotation, decks, boxes ect)? that load dosent seem like it should warrant that kind of drop. the fact that you were hitting mid 20's the first time out sounds like everything WAS right with the boat. let me know once you get a chance to run it again. AND THE MOTOR SOUNDS GOOD?

my buddy has about that same boat and motor. We went out with two guys and hunting load it was running 18 mph I almost got out and swam past this thing. Are they all this slow? My prodrive runs 30 with same load I know mine isnt stock but 18 is slow. How heavy are this dang gator trax?

I have the 1844 gator trax. You should def be over 20 mph with that load. I usually run about 23-24 with the same load.

I have a 1844 gatortrax with the cut back transom the bottom is beat to hell and I run 23 to 24 with the same load. I was running 19 with 3 guys 2 dogs and gear in 1 inch of ice on SAT.

You need to turn your gov up.

i called kent at gator trax today,he said motor had problem should be alot faster with that load. he thinks im running on one cylinder , going to have that checked out tomorrow morn. i have no pods on this rig,no foam either. i hope its as simple as a bad plug. thing is it runs great out of water like crap in water. hey i just joined this forum and you guys are the best at trying to help someone out of a problem. thanks so much

just a tought (you may have already tried) but unplug and replug your spark plugs. i had a problem similar to this and that was the issue, one of the cabels had pulled out but looked like it was still conected (caught on some brush i gues.....)

easy way to tell if your running on one cylinder is take one plug wire off at a time if it dies with one side taken off then that other cylinder isnt firing.

i did check if running on one cylinder,it was running on both. also took back to briggs tech to recheck rpms out of water, it was running 4250.put back in river this pm . me no load 19.6 down river 17.4 up. called David at gator trax and he said have them check compression,if thats ok it must be prop. no more hrs than ive got on it this is going to be expensive to keep up.

Have them put a tach on and then go back to the river and tell us what rpms you are turning

Ill do that tomorrow. thanks

Not sure if you've found out what was wrong or not, but I had a similar problem with my 2005 MB 35 and 1648. I had original stock prop (10") and the motor would top out rev wise at 4050. Trouble was I couldn;t get onto plane with 3 guys and the dog. Went to a new 12.5" prop and added the carb kit and exhaust and it runs like a raped ape. Jumps up on plane with similar loads.

got a new 12.5 prop coming friday.everything checks out ok. thanks,ill let yall know how this works out.

I have owned 3 GT boats and have sold / run a few others. My GT boats were mostly powered by Hyperdrives but I hung a Prodrive on the last one. The GT boats like load toward the back. Get your passenger(s) as close to the back of the boat as possible.

It definitely sounds like your RPMs are wrong. Get a tach. I am at 2200 ft. altitude and all of my motor / boat combos achieve fastest running speed at 3700 to 4100 RPMs in the water. You may have your prop buried too low or up too high for fastest speed. These are surface cutting props and prop depth is critical.

There can be engine problems uncovered by leak down tests and by electrical tests that will expose why a motor will fall down under load. Then there's carb icing.

Get the tach and play around with your fastest prop depth / speed combo. If you don't uncover the performance you are looking for then you have something wrong with the engine.

ive got a 18x44 GD boat w a 35MB and im turning inbetween 4050 and 4090 with 2 people..123 hours on motor, prop is getting more worn everyday it seems like...i run 24-25 with 2 guys (210lb,240) 3 ppl (210,240,240) i turn a little less rpms but boat goes slllllllllllow it seems like..

A buddy used to have the a GT with a mudbuddy..liked the boat hated the motor. He had piss poor service from MB and he was having the same problems. He had a cracked piston in his the third time he ran it. Owned the motor for a year, and it spent 9months in the shop.

Good luck hope you get better service than he did