You certainly do, as you will soon discover the first time you apply reverse to stop when docking.I would agree but with feathering prop I don't have any prop walk.
Prop rotation question
- Thread starter Scott T-Bird
- Start date
Come on….go for it! Give yourself a Christmas present! Mine is a retirement gift to myself !Yep! I don't know what I was thinking! I even had the Autostream installation manual in my files. Well, I won't be sending it to Max Prop to be reconditioned, but since I have it at home now, I will do some servicing by myself. But I think I'll call Martec for some guidance. I'm pretty sure the previous owner bought this prop from Martec as I seem to recall I've got some papers from Martec concerning the prop.
I had already sent the servicing form to Max Prop and got an e-mail reply today. I e-mailed back that I made a mistake because I have an Autostream and he laughed and told me I could have a new Max Prop sent to me before Christmas!
While I was thinking that I had a Max Prop, I was always confused by the grease fitting, which was described in a different manner. As you can see, the zerk is right behind the zinc!
This was a test fit (and I don’t have the cone zinc on yet). But dang, what a work of art !
Greg
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And with some elbow grease and buffing compounds it could look that way again, until it is in the water for a week.
You better than anyone here knows YOLO. Go for it, its only the kid's inheritance.
Yeah, I thought that was an autostream, I did mine last year. It's fairly easy to overhaul. Usually all you need are the new O-rings. Martec has the O-rings and the manual is downloadable from their website. Read the manual carefully when reinstalling, the blades need to be feathered. I did not read the manual and learned what RTFM means. Luckily, I noticed it and corrected it before it went in the water.
If you tell Martec the year and sailboat model and engine/transmission combo that you have, I can bet that they will recondition the prop and pitch it correctly for your boat and set the forward and reverse pitches correctly. You will still need to remove the hub from the blade assembly for installation, but once you align the blades on the hub, the forward and reverse pitches will be correct.
I have a feathering J-Prop. It has no prop walk and does just as well in reverse as it does in fwd. This last summer, I backed out of a narrow fairway with a X wind with an audience of other boats. Once out, I had an ovation and I took my obligatory bow. Concerning maintenance, removal and install is a bit of a pain as there some small bits that lock the nut and takes some time getting it right. The yards get very specific instructions that I and I only mess with prop. The yards around here have no experience with such. The prop goes on as a complete assembly and you can even quickly change pitch while in the water.
Well, the holidays get in the way of boat projects and a nasty little cold has been a bit of a distraction, but I finally pulled my Autostream propeller completely apart to degrease. Once that was done, I was encouraged to see that all the components look and fit extremely well for the age of the propeller. I talked with Martec for reconditioning and spent some very helpful time on the phone discussing how the prop is assembled and set properly. Once I took the prop apart, I realized how the blades were re-arranged while the prop was removed from the boat. Now it all makes sense!
I was told that my Yanmar 3GM30F with Kanzaki transmission was most commonly set up with 2.6 gear ratio; however a few were set up with the smaller gear ratio. The plate on my transmission pretty clearly is punched to show 2.2 gear ratio, which was an option on the KM2P model. I'm curious ... how does the smaller ratio impact the boat's performance? Why does kanzaki provide the options and why would Catalina install one versus the other?
I was told that my Yanmar 3GM30F with Kanzaki transmission was most commonly set up with 2.6 gear ratio; however a few were set up with the smaller gear ratio. The plate on my transmission pretty clearly is punched to show 2.2 gear ratio, which was an option on the KM2P model. I'm curious ... how does the smaller ratio impact the boat's performance? Why does kanzaki provide the options and why would Catalina install one versus the other?
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 22,740
? how does the smaller ratio impact the boat's performance?
* Should not affect performance unless your prop is not pitched to match the gear ratio.
?Why does kanzaki provide the options
* To meet the demands of the market. Different engines, different purposes, different vessels. One might ask why different transmissions from the same maker for the same car.
?why would Catalina install one versus the other?
* My guess would be different price points for different dealer desires. One could pose the question to Catalina.
* Should not affect performance unless your prop is not pitched to match the gear ratio.
?Why does kanzaki provide the options
* To meet the demands of the market. Different engines, different purposes, different vessels. One might ask why different transmissions from the same maker for the same car.
?why would Catalina install one versus the other?
* My guess would be different price points for different dealer desires. One could pose the question to Catalina.
Well, for sure Kanzaki fitted them for different purposes. It's like buying a car with a tow package that comes with a different gear ratio, I suppose.
But I'm guessing that Catalina probably would make standard orders for one ratio, but during the time my boat was in production and Catalina maybe needed to make an order for a batch of trannies, Kanzaki may have temporarily run out of the gears Catalina normally bought and Catalina said 'we'll take what you got!" Plausible?
This would be my guess.
Another possibility is they started with one gear ratio and after reports from the field and owners decided the other ratio would be better.
Nope! It's Autostream. I'm packaging it up tonight to send to Martec in Arizona. Hopefully, it will come back looking like new. The inside of everything looks pristine to me, but the blades and casing has caked-on paint. The man said he will set the pitch for my engine configuration. Replacement parts will be locking pins for the drive gear, rubber O-rings, locking wire, and a new zinc. He said to keep the propeller nut and the ss key. They don't have spare propeller nuts any longer. I'm hoping they can clean up the cap head screws as the heads seem pretty rounded. I'm not sure how the yard got them off.