Alpha One drive

[Paul Mariz]

Hi to everybody, my questions is:<br />it is normal to have a vabriation feeling on a alpha one drive in forward gear and in idle speed.

 

[Hunt]

Re: Alpha One drive

no

 

[Paul Mariz]

Re: Alpha One drive

Mr. Hunt if is the ansewer NO, do you have en idea of what could be the cause,I remaind you probabily the shaking that i ear is normal, But i seen my drive as i was crusing to shake a bit.<br />PS sorry for delay on my following up, my computer had blown up<br /><br />PePere<br />Canada'Quebec

 

[Don S]

Re: Alpha One drive

It could be the prop, the prop shaft bent, the ujoints failing, bad gimbal bearing. Time to get it all checked before it costs you a complete drive.

 

[Hunt]

Re: Alpha One drive

You need to provide as much detail as possible. When did you first notice the vibration. Have you hit anything? What prop are you using? Does the vibration get better or worse when you turn? Are you trimmed down all the way? I honestly couldn't tell you anything about your outdrive, I can tell you that my rig has no vibration at any speed.

 

[tystick]

Re: Alpha One drive

It could be bent shaft from impact but more common / likely is either gimbal bearing or ujoints that need replacement.<br />Do you have water in bellows?<br /><br />Ignore the poster that has one word response as it is neither helpful or conducive to this forum.

 

[Paul Mariz]

Re: Alpha One drive

This vibration was there from the first day i tried the boat, i never hit any thing my self as per the prop is 14-19 pt and is old, but no dents on it, cheked u/joint looks to me in good order, only problems i found oil in bellhousing i have liky oil seal to repair for sure <br /><br />The Alpha one i do not know wat series is, but this the s/n A388651 B may be this will help to identify it<br /><br />How can i chek for bend shaft, rigth now my drive is on the bench same for my prop <br /><br />Tks PePere<br />Canada,Quebec

 

[WillyBWright]

Re: Alpha One drive

Put the prop on it, make sure it's in neutral, spin the prop. If it's bad enough to cause vibration, you'll see it. The end of the shaft has a divot in it. That should stay centered as the prop spins.

 

[Bondo]

Re: Alpha One drive

Ayuh,........<br /><br />Like Willy says,.......<br /><br />There Shouldn't be Any "Noticeable" deflection at the Center of the Prop Shaft..........<br /><br />And,..... Ya Gotta Look Real Close,.....................................................

 

[Paul Mariz]

Re: Alpha One drive

Hi OK. i canot checked now because i dont have it, i am making a stand for it, and my welder has it. i will keep you inform later. <br />I got my self a other leg which i think is a pre-alpha s/n 44311347, i mesure the joke and is 9 1/2 inches long, would this leg be compatible with my alpha one s/n A388651B.<br />i paid penaut for it, i figured if the yoke is good i could used eventualy for mine (nes pas) also probabily the casing i mean the body of the leg.<br /><br />PePere<br />Canada,Quebec

 

[Haut Medoc]

Re: Alpha One drive

"PP", Salut!Ca va? . ..Encore Des Questions.....What is the year & engine size? Alpha 1 Gen 1, all look pretty much alike, & are inter-changeable... However, they do not all have the same gear ratio's, and some will fit your specific engine and some will not....More specifically, they will mate up, but perform wrong.....Don S. can probably answer your question using specific serial #'S........A' Bientot!......JK

 

[Paul Mariz]

Re: Alpha One drive

Thanks JK<br />Encore des question: i like that <br />Hi Don S, must be very cold out there now<br />i gather some info for you <br />my engine is a 3.0L year 1990 130HP 4 Cyl. <br />S/N C 534252<br /><br />my leg is S/N A388651B. ratio 1.98<br /><br />spare leg S/N 44311347 ratio unknon<br /><br />also i like to know what kind of carb i have, S/N 1389-9562 2 barrels i think is Rochester will be apreciated because pretty sure, a got to do a overall next summer.

 

[Paul Mariz]

Re: Alpha One drive

Hi Don S <br />got some info on my spare Pre-Alpha leg<br />Ratio is 1.32 wich fetted a 8cyl Ford, my mec said that with a upper gears change, would be ok for my 3.0 L<br />What do you think about it.<br /><br />Also my Carb is a Mercarb because as only one idle ajustement correct me if wrong. do you know what is kit number to repair it. <br /><br />I have a other question for you:<br />do you know about OMC old drive ex: 165HP 6 cy in line with a either a 400 or 800 model leg (electric shift) one of my body's need replacement parts as per upper drive shaft can these parts be founded yet, after all these boat is a 1977 it would be appreciated to have some news on these vintage boat.<br /><br />PS if DukesFin is around invite you to replay on it i read in one of your topic talking about it