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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #375 on: February 17, 2014, 02:52:45 PM »
you are a 1.62 ratio right? That should work well. With my 1.5 ration i run a 21, had a 23 but it liked the 21 more
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1980 Bahner 21' Mini Day
1968 Rogers project

ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #376 on: February 17, 2014, 03:02:29 PM »
you are a 1.62 ratio right? That should work well. With my 1.5 ration i run a 21, had a 23 but it liked the 21 more

yeah 1.62.  I was going to do bravo one 24p but a LOT of people on RDP pm'ed me saying i would break the alpha if i did that.

what was your cruising rpm and top end rpm/speed? im hoping to cruise around 3k and with the gear hopefully can be between 4.6-5k.
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #377 on: February 17, 2014, 03:22:36 PM »
yeah 1.62.  I was going to do bravo one 24p but a LOT of people on RDP pm'ed me saying i would break the alpha if i did that.

what was your cruising rpm and top end rpm/speed? im hoping to cruise around 3k and with the gear hopefully can be between 4.6-5k.

When i first built my 350, i borrowed a friends bravo one 24P 4 blade, it was WAY to much for my engine combo. WOT RPM was about 4200 but no matter what i did i couldnt blow the thing out in turns...

With a 21p i cruise around 3000-3500 give or take. Tops out at about 5400 (give or take).  Going down river in blythe with half of one tank and by myself with a pretty empty boat she ran 71. I dont know the RPM just had it trimmed up as high as possible without slipping and watching where i was going

But in all reality with adequate fuel, people on board, ice chest etc. I can get about 62-65 out of it if i am trimmed up and runnning hard. But it does 50-55 easily and gets there pretty quick.

For local lakes i run the 19pitch 3 blade i have. Itll run 60 with this prop and probably more. But i run out of room in perris with it, it has a hell of a lot of torque and a great holeshot with the 19pitch. Perfect for tubing/skiing.

This year ill be out at the river for easter. should have my through transom finished by then too. Hopefully will gain another couple mph with the 21 pitch.
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1980 Bahner 21' Mini Day
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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #378 on: February 17, 2014, 03:26:51 PM »
When i first built my 350, i borrowed a friends bravo one 24P 4 blade, it was WAY to much for my engine combo. WOT RPM was about 4200 but no matter what i did i couldnt blow the thing out in turns...

With a 21p i cruise around 3000-3500 give or take. Tops out at about 5400 (give or take).  Going down river in blythe with half of one tank and by myself with a pretty empty boat she ran 71. I dont know the RPM just had it trimmed up as high as possible without slipping and watching where i was going

But in all reality with adequate fuel, people on board, ice chest etc. I can get about 62-65 out of it if i am trimmed up and runnning hard. But it does 50-55 easily and gets there pretty quick.

For local lakes i run the 19pitch 3 blade i have. Itll run 60 with this prop and probably more. But i run out of room in perris with it, it has a hell of a lot of torque and a great holeshot with the 19pitch. Perfect for tubing/skiing.

This year ill be out at the river for easter. should have my through transom finished by then too. Hopefully will gain another couple mph with the 21 pitch.

see i never knew people swapped props so much.  i thought you get the one that works well.  i really want a nice cruising prop.  im never going to be the fastest on the water so im not even going to try.  i just want to do a respectable 30-40cruising and not blow all my gas getting there.  im not so worried about towing or tubing, etc since we have 2 wakeboard boats to do that kinda stuff. 
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #379 on: February 17, 2014, 03:39:07 PM »
see i never knew people swapped props so much.  i thought you get the one that works well.  i really want a nice cruising prop.  im never going to be the fastest on the water so im not even going to try.  i just want to do a respectable 30-40cruising and not blow all my gas getting there.  im not so worried about towing or tubing, etc since we have 2 wakeboard boats to do that kinda stuff.

Yeah i agree.... I only run the 19 for local lakes. My tube is a Big ass 4 person tube that takes a lot to get moving with 4 grown (not exactly skin and bones) people on it so ill run the 19 with it just for the extra oomph.

I mainly run the 19 locally because this is where we tend to use the tube, as well as its a cheapie prop that i dont care if i hit on something in perris or elsinore where i cant see anything.

And we all know that the local lakes dont seem to have the best class of people, so i dont care if my cheapie 19pitch stainless prop gets ripped off. Id be pissed if my new 21 did though

I will say that at the river the 21 stays on 99.99% of the time, ive only changed it once when i spun my old 21. For me the 21 will pull a skier, wakeboarder, single tube and truth be told the 4 person tube just fine (havent tried it). And I can make it from needles to havasu springs on one tank of fuel.

If i remember correctly crusing speed with the 21 is right at the 30-40 mph range. The 23 was a little faster and saved a little fuel but to me it was negligible, and i like having the ability to spin it pretty high when/if i want to go fast. Not very often but has been known to happen.

I think that a 23 on your drive will be pretty close to a 21 on mine because of the gear ratio change. I think it should be pretty much perfect for you. You have more torque than i do but i think im making more top end hp so thats why i can swing it to the higher r's
« Last Edit: February 17, 2014, 03:41:49 PM by steves86ta »
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1980 Bahner 21' Mini Day
1968 Rogers project

ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #380 on: February 17, 2014, 03:50:30 PM »
ok so my old prop had this sleeve on the inside that the little lock nut ring thing folded into... but my new prop doesnt have that... and theres a good 1/4" of spline poking out the back.  what am i missing here?  ill roll down to west marine and pick one up.

old


new
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #381 on: February 17, 2014, 04:01:00 PM »
ok so my old prop had this sleeve on the inside that the little lock nut ring thing folded into... but my new prop doesnt have that... and theres a good 1/4" of spline poking out the back.  what am i missing here?  ill roll down to west marine and pick one up.

old


new


The ring (circled) wont come out of your old prop?


If not, i have a couple of these

http://www.overtons.com/modperl/product/details.cgi?pdesc=Mercruiser-Aft-Washer-97-up&i=23395&aID=601O3&merchID=4006

that should be all you need
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1980 Bahner 21' Mini Day
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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #382 on: February 17, 2014, 04:09:25 PM »
nah on my old aluminum prop its like a whole sleeve... aft washer.  got it.  thanks.
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #383 on: February 17, 2014, 04:19:50 PM »
nah on my old aluminum prop its like a whole sleeve... aft washer.  got it.  thanks.

What kind of hub is in your stainless prop? Is it one piece or like this?

http://teaguecustommarine.com/em0011/flo-torq-ii-hub-kit-400hp-and-under.html

or this

http://teaguecustommarine.com/em0011/flo-torq-ii-solid-hub-kit-merc-400hp-plus-1-shaft.html

If its not the solid one.... i highly recommend getting one. Spinning a stock one SUCKS going against river current... Ask me how i know
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1980 Bahner 21' Mini Day
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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #384 on: February 17, 2014, 06:14:41 PM »
What kind of hub is in your stainless prop? Is it one piece or like this?

http://teaguecustommarine.com/em0011/flo-torq-ii-hub-kit-400hp-and-under.html

or this

http://teaguecustommarine.com/em0011/flo-torq-ii-solid-hub-kit-merc-400hp-plus-1-shaft.html

If its not the solid one.... i highly recommend getting one. Spinning a stock one SUCKS going against river current... Ask me how i know

im not sure really... i dont see any way to remove the hub from mine.





those 2 you posted make more sense to me... the part where the nut goes locks into the actual hub connected to the spline... theres no way for the nut to back out once the tabs are locked down.  if i get a "aft washer" (i went around to a few stores today, none had one in stock) theres nothing really preventing the nut from backing off...
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #385 on: February 17, 2014, 06:21:41 PM »
That hub looks like the one I had in the prop I spun. I don't believe they are replaceable. You will have to get an aft washer to run it.

If you spin it the prop is basically trashed. Some prop shops can replace them but I think its like 125-150. You can provably find a used prop in like new condition for 150-200 with a replaceable hub.

Just an FYI. I carry extra prop hardware (nut, tab washer, aft washer) and an extra prop at all times. Along with the tools to change it. I've only needed to once and it was a PITA in water in the evening with hardly any light.

If I were you I'd look for an aft washer. Run the prop to see if you like it. Then look for a prop with a replaceable hub and keep this as the backup prop.

Mine spun running up to Jack Smith from pirates cove with a very loaded boat and running almost wot.

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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #386 on: February 17, 2014, 06:29:11 PM »
thanks for all the help.  appreciate it.
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #387 on: February 17, 2014, 06:30:56 PM »
No problem! I'll be hitting you up for some help on building a new hatch for my boat

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1980 Bahner 21' Mini Day
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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #388 on: February 20, 2014, 09:22:29 PM »
prop is on...  cant wait to try it out.



missing part.  refered to as an "aft washer"
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #389 on: February 21, 2014, 06:30:36 AM »
Looks good! Let me know how it works for you

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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #390 on: February 28, 2014, 12:23:57 AM »
started tearing into the trim pumps for the k-planes... they were looking pretty sad as whoever owned em before me mustve painted them with a brush or something.  so its strip time, and then once they're clean ill hit em up with primer and a coat of mercruiser black paint.



the solenoids are pretty grungy and 2 of the posts on em were damaged in shipping.  ill just buy all new ones.





insides looked good on the hydraulic pump side





the electric motors themselves werent too bad.  brushes and the surface they sit on was clean... but there was some surrounding rust.  ill clean em out and hit all the contact points with some fine sandpaper. 



aircraft stripper makes short work of any paintjob or finish.  you MUST be careful with this stuff. if you brush it on and it splatters in your eye you will be in a world of pain.  even a splatter on your arm will be burning like hell in a matter of seconds.  luckily it just dilutes with water if you do get any on you.

« Last Edit: February 28, 2014, 02:18:55 PM by ka0tyk »
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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #391 on: February 28, 2014, 05:55:48 AM »
First time I uses aircraft stripper I had flip flops on.....  I was in a world of pain

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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #392 on: March 01, 2014, 09:22:15 PM »
all clean.



now to start on stripping the bottoms...
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rush1

  • Karma: +18/-0
Re: 21 Bahner I/O project...
« Reply #393 on: March 02, 2014, 06:34:23 AM »
Lmao flip flops,  the first time I used it I was 15 I learned the hard way too.

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Your Mom

  • Karma: +20/-0
Re: 21 Bahner I/O project...
« Reply #394 on: March 02, 2014, 12:09:04 PM »
Lmao flip flops,  the first time I used it I was 15 I learned the hard way too.

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x3 got blisters on my feets

ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #395 on: March 03, 2014, 09:01:04 PM »
stop... primer time...

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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #396 on: March 03, 2014, 09:49:39 PM »
armatures for the motors... they were a little rusty before.  gave a quick sand and then sprayed em with electric cleaner.  should be good to go.  ill pull the stators and clean those up and then im gonna solder some new leads onto em as the current ones are cracked and i dont want to start any fires anytime soon.






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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #397 on: March 03, 2014, 11:54:10 PM »
first coat. 

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ka0tyk

  • Karma: +30/-0
Re: 21 Bahner I/O project...
« Reply #398 on: March 16, 2014, 12:42:38 PM »
still tinkering.  my electrical panel was a little large and i wasnt a fan of the exposed wires.  sooo i made this instead.  fused, relayed, and a little light for when things turn on. 










also made some progress on my trim pumps.  all painted and new solenoids.



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steves86ta

  • Karma: +41/-0
Re: 21 Bahner I/O project...
« Reply #399 on: March 16, 2014, 02:08:25 PM »
I need your electrical skills

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