Recent Posts

Pages: [1] 2 3 ... 10
1
General Boating / Re: whose got the fastest glastron?
« Last post by tjam72 on April 15, 2018, 04:38:41 PM »
Have a new glastron...2018 GT 205 with new 5.3L 300 and a 1.66 rear end. She’ll do 60+ (new speedos in Glastrons are GPS based!) with a full tank and my fat butt (300#) driving. Prop is 13 7/8 by 23 Michigan Wheel Apollo. This is about 5500 rpm (wot is 5400-5800 on the new 5.3L).

This is my fourth Glastron and the fastest. I could probably play with the prop a bit and get a few more mph..but this holeshot is wicked and 60 plus is moving pretty good.
2
Technical Questions / outboard shaft length
« Last post by wlrick on April 02, 2018, 11:38:33 AM »
I have a 1980 Glastron 167 ssv with a 115 mercury. Looking to repower and just wondering what the shaft length needs to be for this boat. Can anyone give me info or know where I can find out the proper shaft length needed. BTW the boat is 200 miles away at the cabin so I can not look at easily.
3
Technical Questions / Gas struts 2004 SX 175
« Last post by Ansig on March 25, 2018, 03:31:06 AM »
Hi all I have just purchased a 2004 SX175 Volvo Penta 3.0 - the rear seat/ engine cover is very heavy I would like to fit gas struts - not sure if there was originally struts but none there now just some holes - any help greatly apppreciated
4
It's really tough to answer your question without the proper tach readings. Your first step should be to figure out the tach. If you've confirmed the setting on the back side, the only other thing is to check all the connections.
Then tackle the prop issue, but since you can't run the original prop to check rpm's, again, you're going to be guessing.
And for trivia, is your elevation higher or lower than the 4500' in Colorado?

FWIW, I've been using the Nemesis 4 blade aluminum and happy with the performance.

Yeah, I know it's tough... it's why I came to the experts for help! I was really hoping it was just me and that someone here would have a better idea :)

I fixed the tach today. Well, "fixed" might be an overstatement... Mercury confirmed for me that the engine is programmed to idle at 625 in neutral / 650 in gear. The "correct' setting on the back of the tach should have been 2 but on that setting it read idle at 1000. The next couple settings were either too high or too low, but setting number 6 read the idle speed perfectly, so I left it there. The next time I take it in for servicing I'll have it double checked and calibrated, but this should be close enough for prop purposes -- assuming it reads higher rmp's as accurately as it does idle.

I'm fixing the 23P I dinged up to use as both a starting point to figure out rmp/WOT and to use as a spare after I buy a new prop. It's only $65 to fix; that's a lot cheaper than spending $150-$300 on a prop that might not be the right pitch and probably wouldn't be returnable. I know the 23p works, I just don't think it's optimal... it'll make a fine spare.

We're much lower than CO. We boat on lakes Havasu, Mohave and Mead which is the highest at just under 1100 ft. The lower Colorado River between Laughlin and Lake Havasu is where I dinged up my prop. They'd let the river run much lower than the release report lead me to believe... it was 2 1/2' when it should have been closer to 5'. Lesson learned :)

I'm leaning toward the nemesis/Spitfire 4-Blade as well, the only question is pitch.

Thanks for replying!
5
It's really tough to answer your question without the proper tach readings. Your first step should be to figure out the tach. If you've confirmed the setting on the back side, the only other thing is to check all the connections.
Then tackle the prop issue, but since you can't run the original prop to check rpm's, again, you're going to be guessing.
And for trivia, is your elevation higher or lower than the 4500' in Colorado?

FWIW, I've been using the Nemesis 4 blade aluminum and happy with the performance.
6
Technical Questions / Choosing the right prop... a different kind of problem
« Last post by Racklefrack on March 09, 2018, 05:13:50 PM »
Boat info: 2012 MX185 / 4.3 MPI 220 hp / 1.81 Alpha One / 23P prop

As this boat is new to us, we've been trying to dial her in for how we'll use her. It'll most often just be my wife and I, full fuel and very little equipment. I originally questioned the wisdom of putting a 23P prop on a 1.81 stern drive, but a conversation with Glastron helped me figure it out why they did: The boat was originally purchased in Colorado at about 4500' elevation... hence the 1.81 drive and 23P prop, to make up for the altitude.

But for here at most lakes in AZ, 23P might not be optimal. It seemed like it was performing ok, though it felt like it might be struggling at slow-to-mid speeds just a little bit. It popped up onto plane ok under near-full throttle, but to hold 20-25 mph seemed like it was chugging a bit. I was thinking of either dropping down to a 21P or going to a 4-blade 23p, but...

Unfortunately, we're also simultaneously experiencing an issue with the tach reading way too high so I don't know what WOT speed and rpm readings really are so I can't tell for sure what pitch the prop should be. I made a new post about the tach problem separate from this one, so I'm still working on that part.

So here's the real problem:

I just chewed up my prop on the bottom of the Colorado river. I can't run it like it is and I really don't want to spend the money to fix it -- especially if it's not even the right prop -- since it's just an aluminum screw. Instead of spending $120 to fix the prop and a new hub system, I'd much rather just buy a new Spitfire 4-blade for $160. The question is, what pitch?

I need a new prop, no doubt about it, and a spare prop isn't the worst idea. I'm not totally against the idea of buying both a new 21P and a 23P and use one / keep one for a spare, but it's not exactly the smartest use of money. So, if this were your boat and you had a busted prop, a malfunctioning tach and no idea what the pitch should be, what would your next step be?

I know, it's a mess. I appreciate any input you might have.

Thanks!
7
Technical Questions / Calibrate Tachometer
« Last post by Racklefrack on March 09, 2018, 04:47:10 PM »
Just getting to know our new-2-us 2012 MX185 / 4.3 MPI / 220hp / 1.81 Alpha and 23P prop.

There is clearly an issue with the tach because at almost WOT it was reading 6,000 rpm. I confirmed with Mercury Tech Support this morning that my engine is rev limited at 4950, so it couldn't have possibly been turning 6k. The switch on the back of the gauge is set to 2 (for 6 cyl) but it was still reading wrong, so maybe there's some corrosion in there or... I dunno. Here's my question:

Can I play around with the settings and calibration knob and accurately calibrate the tach while running on the hose / muffs at home? I confirmed with the Merc tech this morning that at idle she should turn 625 in neutral, 650 in gear... so if I get the tach set right and then dial it in a 625 rpm at idle in neutral at home, will that translate into an accurate reading out on the water?

Note; I'd explain why I have to do it with this way, but it's a really long story... I have a second post asking questions about that problem. You're welcome to help out on that problem too, if you want  :-[
8
Technical Questions / Re: Add front speakers to GT 185 (2013 Model)
« Last post by Merlin16 on February 26, 2018, 11:05:16 AM »
Remove one of the bottom cushions to the storage area.. Can you reach your hand/arm in and up inside that cavity? On mine I can also see that void by looking under via the dash area. But not sure how far that space goes and probably tapers off towards the front.
9
Technical Questions / Re: Add front speakers to GT 185 (2013 Model)
« Last post by LSUtiger07 on February 20, 2018, 01:40:38 PM »
I am new to this forum as well. I don’t have a GT 185 but have a 2007 GT 205. I picked up the boat last year from the original owner and love it, however, one of the first things I noticed was the outdated sound system. This winter I took on the project to upgrade it. I replaced my aft speakers with Kicker 6.5’s and and added 2 speakers to the bow. Much more balanced sound now! I’m not sure for your particular model as I believe I have an older model/design, but I had plenty of room. I also spend a solid week researching and measuring because I knew once I cut the holes there was no going back. Best of luck.
10
Technical Questions / DX Owners - Sundeck cushion attachment hardware quesiton
« Last post by BrewNdrink on February 20, 2018, 08:22:26 AM »
Good Morning!

My recently purchased 2006 DX 205 is missing the rail that the sundeck cushion slides into to attach the front of the cushion. I believe it's something generically called "awning rail", but there are many different sizes and configurations available online. I want to make sure I get the right stuff.

Any help, pictures of yours, etc. is greatly appreciated!

David
Pages: [1] 2 3 ... 10