Coupler or Hub ?
 

Cruisin along about 3200 and Boat comes off plane and port motor seems to spin free .... Coupler or maybe the Hub ?

Re: Coupler or Hub ?
 

If it is your coupler you will see shards of burnt rubber all over your rear engine compartment. Sounds like your drive to me.

Re: Coupler or Hub ?
 

If it is the hub you may experience intermitent slipping.

Feel free to call.

Julie
Throttle Up Propellers
727-531-2255

Re: Coupler or Hub ?
 

Well at least you got the overheating problem fixed , right?
Could also have taken out the splines in the coupler :(

Re: Coupler or Hub ?
 

what did I read about turning the props by hand ? If I can tell a noticable difference ? With drives up and in gear it will turn at Idle ....but if you lower the drive and put load on it doesnt spin ...

Re: Coupler or Hub ?
 

Yup runs cool as a cucumber now ....just dont spin ! ..we'll get it though ..If its the coupler ..thats gona hurt ....JUST had that motor out ...

Re: Coupler or Hub ?
 

Run the engine with drive down and in gear and take a look at the drive shaft.
If it rotates, it's not the coupler. If it not rotates ... :(

Re: Coupler or Hub ?
 

Bingo ...merc Flo Torque Drive Hub ....41.00 ..Damn I'm Glad That Motor doesnt have to come out .......

Re: Coupler or Hub ?
 

Smell the lube in your outdrive ,if it smells burnt your drives gone.

Re: Coupler or Hub ?
 

OK .. found out I have the press in type hub ....So question now is ...do I invest in another set of props as spares ...or get newer props with quick change hubs ...or ..I read where cpl of 311's are running Hydromotive's QIV ...(Russ) ...

Re: Coupler or Hub ?
 

I'd just get those props rehubbed and then keep my eyes out for a pair of used props in the size you want for spares/other set. I like having a couple of sets around, different pitchs or styles, a pair for when you really want to put the hammer down and another pair for just cruising around.

At least it's not the coupler,

Caleb

Re: Coupler or Hub ?
 

Thanks ..... I agree ...Looks like Mirage has Press in Hubs and other models have the quick change hubs ....

Re: Coupler or Hub ?
 

What kind of Drives are you running. I got tired of prop hub damage and went to solid hub. No more let downs. With the bravo drives and not too much H.P. there will be no problem. I've hit sandbars that actually stopped the motor. I just get out push, or get towed off and start it up and all is A O.K. BTW Flow torque is Crap ! They only did that so stores could stock less props and interchange the hub for various makes. I think Merc. and Michigan love to sell more props and increase their profits. They have shown us that it is more important to make money and skimp on products and shaft thier customers. BBB

Re: Coupler or Hub ?
 

Billy .... bravo 1's .. 454 mags (stock) ....I think I am seeing where ALL Mirage's are rubber hubs ? Not sure but seems that way ...

Re: Coupler or Hub ?
 

Mike, my Hydromotive Quad IV's are Solid Hub. Run them for almost four years now and never had a problem. Russ

Re: Coupler or Hub ?
 

By solid hub you guys mean that it doesnt have pressed in rubber bushing but some type of solid material ?

Re: Coupler or Hub ?
 

Getting new hubs pressed in is not too expensive. I have a set of Mirage three blade props on a boat that I am selling. I just checked into it and it was like $15 for each hub and $45 per prop for the labor.

Re: Coupler or Hub ?
 

Mike, solid hub is just that. In place of the rubber bushing it has steel "inserts" for lack of a better work that welds to the splined opening the slides down the propshaft. I don't think I got the terminology correct there but you get the idea. Basically, instead of rubber it's steel.

The rubber hub is designed so if the prop hits something, the rubber hull takes the shock and breaks rather than breaking either a prop blade or a gear or whatever.

The solid hub is "higher performance", no flex, but theoretically it could result in breaking something more expensive if the prop hits something.

In Florida, where there is so much sand, I really don't think it's a concern.

I remember a comparison test, oh maybe six or eight years ago, and on the same single engine boat (maybe Hot Boat????), the solid hub prop was 1.7 (radar) mph faster. I believe the boat was running in the upper 80's.