1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Hello,

I have a 1959 Johnson Super Seahorse, 35 hp (RDS-21B) and I just went through the process of replacing the coils, points, condensers, and spark plug wires. The problem I am having is that when I took it all apart I discovered that the brass sleeve that fits into the base of the armature plate, and rides on the outside of the crankshaft housing, is damaged. There were brass shavings all over and the sleeve was actually "floating" where it should be attached to the armature plate.

I searched for a replacement sleeve and came up empty. I tried to re-install the sleeve and it of course fell right out. It appears that the sleeve centers the armature plate on the crankshaft housing and is also a bushing that allows the armature plate to rotate about. With a failing sleeve, I am not able to accurately set the gap on the points and I fear that running the engine with it not in place will only cause further damage.

I was not able to find a part number for the sleeve and I am beginning to think that it may be considered a permanent fixture and part of the armature plate itself. However, every single armature plate I have been able to find, either "new" or used, does not have the brass sleeve.

Anyone have any ideas or advice?

Joseph

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Replace the armature plate. The aluminum plate and the brass sleeve are one unit.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Mr. Reeves,

I appreciate your prompt response. Now, got any ideas where I can find one, new? The guy at my local shop told me his computer system said there was one available that he could order, but it was over $300. That seems a little steep to me and he thought maybe it was a complete unit with magnetos, armature, the whole bit.

Thanks,

Joseph

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Since you came here, your "emptiness" is no more. In the "Top Secret File" you will find a list of salvage yards that have bunches of parts for oldies like we have. If nothing else, someone here may likely be too happy to help you out.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Killinit said:

The problem I am having is that when I took it all apart I discovered that the brass sleeve that fits into the base of the armature plate, and rides on the outside of the crankshaft housing, is damaged. There were brass shavings all over and the sleeve was actually "floating" where it should be attached to the armature plate. Joseph

Click to expand...

My first reaction when I read your thread was that you are describing what the OMC parts catalog calls the "retaining ring" and "support", p/n's 0303277 & 0303278. The retaining ring is widely available online and probably through any BRP dealer for $19.63USD MSRP. I previously owned a RDSL-21 for ten years and completely rebuilt it when I got it so that is the extent of my knowledge. However, when Joe Reeves posts in a thread, I pay attention. So, consider my input as just that. Good luck with that great old motor!

The link below is to a original factory parts catalog for your motor. It might help if you do not already have one.

http://www.marineengine.com/parts/v...ntage-evinrude-johnson/377809/37780900001.htm

EDIT: I forgot to tell you that if those two part numbers are what you need, I think they are universal on all OMC two-cylinder motors from 1952 through 1972. You could probably find a junker motor with useable parts that will work on your motor for very few $$$. FYI, the armature plates carry different part numbers over those same years, so that has to be addressed separately if it is also an issue.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Joseph..... Yow! I looked that up also and you're correct in the price. MY 2010 book states it as around $285.00... outrageous!

The original part number was 580271, then superseded up thru the part number of 580332 to a final part number of 584810. I'll look thru my old stuff to see if I might have one that won't break the bank, and in the meantime, you look thru the various outboard repair shops here via this sites info and elsewhere for a good used one.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

This is what you need, it is in fact one piece. This is from a '59 35hp ELTO. The expensive part is the "vintage" cracked coils, they are VERY valuable, lol

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Pine Lake boat and motor. 580332 mint cond. 90.00

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Hey all,

I really appreciate all the help. I went on to the sea-way website and entered the 580275 part number (according to the parts catalog this is the part number for the "Armature Plate Assembly-Complete" {#7A on the Item No. list}) into their parts search catalog. It came back with the correct description and a price tag of $75. I tried to call them but they are only open on weekdays, so I filled out the parts request form and put in a comment asking them to confirm that the "stocked" part they have does include the pressed in brass sleeve. I will follow up with them by telephone on Monday.

Hightrim, lol, those cracked coils are priceless!

billsfw, thanks for the info, I may go to PLBM if I turn up squat with sea-way.

Joseph

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

For $75 bucks, you could buy a "parts motor" with the desired parts plus more!

Mas

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

I've got a used one identical to the one in HighTrim's photo - part number is 580210. I'm almost positive it came off a '59 Johnson 35hp.
Price is dirt cheap. PM me if you want it.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Killinit.... The part number of 580725 that you listed made me curious. I have the original OMC parts manual for that engine. It doesn't make any difference if it's a Johnson or Evinrude manual.... they're identical excepting the hood and pain scheme. Anyhow, I double checked and my original part number mention of 580271 ---> 580332 ---> 584810 holds true.

My 2010 Bombardier price book does list the number of 580275 but it does not state what the part is. It just states that it is a vintage part, and its last known price was $75.00. I'm still looking and will check further tomorrow to see if I might have a good used one.

On your bad armature plate, there is a casting number on it somewhere. What is that number?

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

FYI, 580871 is a kit to replace the original brass-sleeved plate with a new style with a different mounting system. The brass sleeve is gone, replaced with a hard-coat separate part with different mounting rings. It will give much longer life and much less slop in the mounting. It became standard equipment on the 33hp & 40hp, 1969-ish and up. It's $80 at marineengine.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Mr. Reeves,

On page 10 of the catalog in Willyclay's post above there is the Item No. List reflecting No. 7A, part 580275, Armature Plate Assy - Complete. I don't know what it means or why it's different than 580271. I am curious if you can shed light on F_R's posting about part 580871 and the feasibility of "updating" my magneto set/armature assembly with this newer version and mounting system?

Also, the casting number on my armature plate is 580210-2

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Killinit said:

Also, the casting number on my armature plate is 580210-2

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As mentioned, I've got what you need, and it won't cost you anywhere near what others are asking, not much more than the cost of shipping. I've got lots of parts just taking up space which I hate to throw in the trash. PM me if interested.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Killinit said:

Mr. Reeves,

On page 10 of the catalog in Willyclay's post above there is the Item No. List reflecting No. 7A, part 580275, Armature Plate Assy - Complete. I don't know what it means or why it's different than 580271. I am curious if you can shed light on F_R's posting about part 580871 and the feasibility of "updating" my magneto set/armature assembly with this newer version and mounting system?

Also, the casting number on my armature plate is 580210-2

Click to expand...

"Armature plate complete means just what it says---complete with everything mounted on it, coils etc. Actually, everything listed with the dots below there.

580210 is a casting number, used on many different finished products for different years and horsepowers. There will be minor variations from model to model, such as a screw hole not being drilled and tapped, etc.

Take the offers being given you here. Who knows, the first plate only lasted about 60 years, and maybe you will get another 60 out of it.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Yea, lindy46's offer is pretty hard to beat. I would jump on it too.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

I helped him out, cracked coils and all

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Right on. I actually know of a guy just north of me who has a mag plate with new coils on it for 40 bucks. I bought the motor from him, for parts. I gnabbed it for 50 and found out that he rebuilt the lower unit on it last year.

Re: 1959 Super Seahorse 35, Brass Sleeve on Ingnition Armature Plate

Thank you ally for the help, I really appreciate it. Hightrim, thanks again, I look forward to getting my part.
Happy boating!