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CausinTrouble
03-31-2009, 05:21 PM
How many cc helm do they recommend for a twin ram set up?

MattBMiller
03-31-2009, 05:26 PM
Check the IMCO website. They have P/N's for the Char-Lynn helms.

MattBMiller
03-31-2009, 05:27 PM
http://www.imcomarine.com/nvcatalog/imco_2009.pdf

Page 132

CausinTrouble
03-31-2009, 05:50 PM
Thanks matt.

I bought a 230cc Helm and didnt know if it was to big.
Imco says its 1.5 turns lock 2 lock

MattBMiller
03-31-2009, 06:01 PM
Mine is 3 turns lock to lock with dual rams. 1.5 might be a little sensitive

CausinTrouble
03-31-2009, 08:17 PM
sounds like fun :sifone:

Anchored
03-31-2009, 10:30 PM
If you know the bore of the cylinders, the stroke and the diameter of the rod,

I can walk you through the math to get the desired ratio. It's pretty simple.

I dug through my stuff but didn't have any helms. I do have an extra geroter set though.

Jeff

MOBILEMERCMAN
03-31-2009, 10:41 PM
Thanks matt.

I bought a 230cc Helm and didnt know if it was to big.
Imco says its 1.5 turns lock 2 lock

I like a fast helm

Griff
04-01-2009, 01:39 AM
I'm about 3 turns lock to lock and would prefer the 1.5. It all depends on what you like.

CausinTrouble
04-01-2009, 07:28 PM
I could not pass up this deal. I didnt know the size of the helm but I knew it would work. When I got it I looked it up and its the 230cc. I guess I will have to get used to the fast steering. The boat is a 27' Excalibur and is only 6'6" wide. With 575hp it should be pretty fast and fun. :26:

CausinTrouble
04-01-2009, 07:29 PM
Another question: What size hose does everyone use ?

Richard Crainium
04-04-2009, 07:53 AM
I used #8 (1/2")on my boats.then #6 (3/8") after the t.

CausinTrouble
04-04-2009, 09:25 PM
Thanks Richard

CausinTrouble
04-05-2009, 03:36 PM
How do you mount the helm under the dash....With the hoses on the top or can they be coming in the side ?

Anchored
04-05-2009, 08:43 PM
You can point them any direction you would like.

Here are a few pics of my Donzi install.

Jeff

MOBILEMERCMAN
04-05-2009, 08:46 PM
I used #8 (1/2")on my boats.then #6 (3/8") after the t.

You can use 3/8 on the low pressure return.

Anchored
04-05-2009, 08:46 PM
More

CausinTrouble
04-05-2009, 09:39 PM
Thanks again guys.

After I posted, I did some more reading and figured out they can be mounted which ever way works the best for the application. When I start the install I will take pics and post the progress.

CausinTrouble
04-06-2009, 09:46 PM
Another question.

Do the Charlynn helm use an O-ring or pipe fitting ?

MOBILEMERCMAN
04-06-2009, 09:55 PM
I believe they may be o-ring, but am not sure.

Pipe would be tapered thread o ring would be none tapered.

CausinTrouble
04-06-2009, 10:00 PM
Thanks Jim

I will check to see if they are tapered

DONZI
04-06-2009, 10:17 PM
Does anyone sell a steering post/shaft Male spline with the popular 3/4 tapered size for these Char- lynn Helms w/female spline inside Helm ??

It seems most Bezels & Hubs are the 3/4 size offered aftermarket .

Don't mean to steal your thread C.T.but thought the info might be useful for you also.

MOBILEMERCMAN
04-06-2009, 10:22 PM
If a tilt will work check this nice piece out.

Its about half way down the page

http://www.lathammarine.com/new-products.htm#1

DONZI
04-06-2009, 10:34 PM
If a tilt will work check this nice piece out.

Its about half way down the page

http://www.lathammarine.com/new-products.htm#1
Nice piece but doesn't fit the budget.Hence trying to adapt 3/4 parts.

MOBILEMERCMAN
04-06-2009, 11:43 PM
Do an adapter you can use?

Anchored
04-07-2009, 01:33 PM
Another question.

Do the Charlynn helm use an O-ring or pipe fitting ?

You could get them with both. The older ones were usually pipe thread.

The newer ones are -8 SAE 0-ring boss 3/4-16

I'm pretty sure the make the extension shaft with the 3/4 taper instead of the spline for the steering wheel end. I'll see if I can find one

Jeff

Excalibur Racing
04-07-2009, 04:26 PM
Burden sales in Nebraska has alot of charlinn stuff cheap too!

CausinTrouble
04-07-2009, 08:40 PM
Does anyone sell a steering post/shaft Male spline with the popular 3/4 tapered size for these Char- lynn Helms w/female spline inside Helm ??

It seems most Bezels & Hubs are the 3/4 size offered aftermarket .

Don't mean to steal your thread C.T.but thought the info might be useful for you also.

I havent even got that far on mine yet..Still trying to get everything together. Please post what info you find on the post.


Thanks again Jim and Anchored

DONZI
04-08-2009, 07:00 AM
I'm pretty sure the make the extension shaft with the 3/4 taper instead of the spline for the steering wheel end. I'll see if I can find one

Jeff
Thanks Jeff.
I haven't been able to locate one.
Are the ones that come standard, helm/strg. post all one assy. ?

Anchored
04-08-2009, 01:41 PM
Thanks Jeff.
I haven't been able to locate one.
Are the ones that come standard, helm/strg. post all one assy. ?



Page 76 here: http://hydraulics.eaton.com/products/pdfs/C-STOV-MC001-E1.pdf

If you need more help let me know. Minneapolis is in the heart of this country's hydraulic industry.

Jeff

DONZI
04-11-2009, 06:52 AM
That Catalog hurts my brain ! L.O.L.
Here's what i have, Char lynn Helm #211 1007 002 w/female spline with a 1" thick dash.

On a budget, any suggestions w/ part links for a winning combo to fill the gap from helm to wheel ? 3/4 or 7/8 doesn't matter.
Thanks Ken

DONZI
04-11-2009, 07:24 AM
These are priced reasonable from Imco but there is no shaft length dim. to go by ??
http://www.imcomarine.com/pages/images2/32b.gif
http://www.imcomarine.com/pages/nev-helm-steering3.html

CausinTrouble
04-11-2009, 12:34 PM
Do I need to install the check fittings in the helm and the attach the hoses ?

old377guy
04-11-2009, 12:46 PM
That Catalog hurts my brain ! L.O.L.
Here's what i have, Char lynn Helm #211 1007 002 w/female spline with a 1" thick dash.

On a budget, any suggestions w/ part links for a winning combo to fill the gap from helm to wheel ? 3/4 or 7/8 doesn't matter.
Thanks Ken

Donzi, I too, want to convert to power assisted rear (external) hydraulic steering. I see various Char Lynn model numbers listed at the Burden website. Is that 211-1007 the correct piece for a twin engine - dual ram - power steering pump assisted installation? Thanks for any input - Jeff

CausinTrouble
04-11-2009, 02:52 PM
Donzi, I too, want to convert to power assisted rear (external) hydraulic steering. I see various Char Lynn model numbers listed at the Burden website. Is that 211-1007 the correct piece for a twin engine - dual ram - power steering pump assisted installation? Thanks for any input - Jeff

Plumbers Crack has a Helm for sale for $150 and I bet it will work for you. PM him he is a member on SOS

DONZI
04-11-2009, 04:20 PM
Donzi, I too, want to convert to power assisted rear (external) hydraulic steering. I see various Char Lynn model numbers listed at the Burden website. Is that 211-1007 the correct piece for a twin engine - dual ram - power steering pump assisted installation? Thanks for any input - Jeff
Mine's a single.
Pg.132 of the Imco catalog breaks down some info for you on CC'S required with rod size & stroke.
http://www.imcomarine.com/nvcatalog/index.html
But maybe someone can give you a simpler answer.
Some more info in this OS.O. thread also.
http://www.offshoreonly.com/forums/general-q/52908-hyd-helm-unit.html

Anchored
04-13-2009, 04:23 PM
Donzi, I too, want to convert to power assisted rear (external) hydraulic steering. I see various Char Lynn model numbers listed at the Burden website. Is that 211-1007 the correct piece for a twin engine - dual ram - power steering pump assisted installation? Thanks for any input - Jeff

In order to determine the right helm number I would need to know the bore and stroke of the steering cylinder(s).

The base part number 211 is correct. This denotes an open center valve.
1007 is a 4.5 cubic inch metering section. This determines the steering ratio depending on the cylinder sizes.
If it's a smokin' deal you can buy it and swap out the metering section for the correct one.

Jeff

Anchored
04-13-2009, 04:27 PM
Another note for you guys. Since you are converting to full hydraulic.
Your steering wheel will not go back to the same position every time.

You could be driving straight and your wheel will be pointed some other direction.

I put a three spoke symmetrical wheel on my Donzi because of this.

Jeff

Jeff

old377guy
04-13-2009, 06:01 PM
thanks for all the info, guys

CausinTrouble
04-23-2009, 10:01 PM
Ok... I got the fittings and some of the long hoses made up today. Going to install the helm this weekend (hopefully)

Here is another question.. Do I really need a filter ? autos dont run them, most rock crawlers dont have them. Do I need one?

Thanks

MOBILEMERCMAN
04-23-2009, 10:45 PM
I would say yes . Too much at stake. Safety, expensive parts,,,,

CausinTrouble
04-24-2009, 05:03 PM
Kinda what I was think but just wanted to hear some feed back

Anchored
04-27-2009, 01:02 PM
I've got a filter setup if you need one. 10 micron nominal.

Jeff

CausinTrouble
04-27-2009, 05:00 PM
I've got a filter setup if you need one. 10 micron nominal.

Jeff


Jeff,

I sent you an email :sifone:

CausinTrouble
05-16-2009, 10:52 PM
Ok....So I got eveything hooked up and filled with fluid getting ready to bleed the system..But I have a dumb question...If your standing behind the boat looking forward and you turn the wheel to the right..The drive should go to the right...correct?????

old377guy
05-17-2009, 11:39 AM
Ok....So I got eveything hooked up and filled with fluid getting ready to bleed the system..But I have a dumb question...If your standing behind the boat looking forward and you turn the wheel to the right..The drive should go to the right...correct?????

yes, the rear of the drive will swing to the right.

CausinTrouble
05-17-2009, 09:22 PM
yes, the rear of the drive will swing to the right.

I had the lines backwards :leaving: Brain Fart :ack2:

Once I switched them back I knew it was right.

Thanks

Wobble
07-15-2009, 04:29 PM
I believe they may be o-ring, but am not sure.

Pipe would be tapered thread o ring would be none tapered.

"o ring" on my charlynn system. I see a lot of these systems have a filter in the high pressure line. The one in mine was too fine of a filter and caused slow and heavy steering and eventually destroyed the pump.

A hydraulic engineer looked at it and said that the filter was not necessary as there is usually a magnet in the Saginaw pump to pick up any metal contaminates. In fact the filter was degrading the performance.

I got an upgraded 1500 psi pump from AGR racing in Fort Worth flushed the system and discarded the HP line filter. I can now turn my steering lock to lock at idle with one finger. These pumps are way cheaper than any "marine" pump and are clear-coated. You do have to transfer the reservoir and the pulley yourself.

http://www.agrperformance.com/products_parts.php?cat=101&product=114&make=Chevrolet, GMC&model=101

Most mercruiser pumps are the metric P type Saginaw pump

AGR specializes in dual ram steering for rock crawlers, basically the same thing we use.

Wobble
07-16-2009, 10:48 AM
We found a very easy way to flush and bleed the system. Remove the belt and use a 3m pinstripe removal wheel in a cordless drill against the pulley. It turns the pump at just the right speed to flow without aerating the system.

The rubber wheel wont hurt the finish on your pulley. I also believe that the system bled a lot faster due to the absence of that in-line high pressure filter.