Need to replace my bowstem/anchor roller
- Thread starter rajhnsn
- Start date
I believe that the O'Day 35 had an standard anchor roller. You're photo is pretty rough and small. What's wrong with your roller? (e.g., it's it the roller wheel itself, the spindle, or?)
DR Marine has a bunch of O'Day Parts. If you're into really making this the original, you can pay to replace it for about $1,550, plus tax, shipping.
DR Marine has a bunch of O'Day Parts. If you're into really making this the original, you can pay to replace it for about $1,550, plus tax, shipping.
DR Marine Product Detail
drmarine.com
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| Made with 100% high-polished Stainless Steel, this beauty is able to ship within 3-6 weeks. What a Show-Piece! | ||
| Email Friend | Price: $1,550.00 | |
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From my research so far. It looks like earlier years were made of cast aluminium. Later they were changed to stainless. I was able to talk with Rudy. (Yes, he is still around.) He has not had a request for the new stainless stem head bow roller shown above for 8 years and he sold the last one. He gave me the name of the company that might have had the blueprint but the company no longer has it. The company that originally made them is out of business.
I went to a local marina today to see if I could find another example of the stem head that I need. Almost every sailboat new and old had a single stainless strap that connected to the forestay and roller furling drum. Even a smaller model O'day used a stainless steel strap. I wonder if any of the newer 86 to 89 34/35's used a stainless strap instead of the combination stem head plate and anchor roller? I have a call into Rudy but I have not heard back yet.
Can anyone think of why I wouldn't be able to convert mine over to a SS strap? Much larger Catalina's and Beneteau's have them. What load factors would need to be considered and what thickness of SS would be needed?
Any help on this would be very much appreciated. I'm running out of options.
I’m attaching pictures of what I currently have and what I see on other boats.
I went to a local marina today to see if I could find another example of the stem head that I need. Almost every sailboat new and old had a single stainless strap that connected to the forestay and roller furling drum. Even a smaller model O'day used a stainless steel strap. I wonder if any of the newer 86 to 89 34/35's used a stainless strap instead of the combination stem head plate and anchor roller? I have a call into Rudy but I have not heard back yet.
Can anyone think of why I wouldn't be able to convert mine over to a SS strap? Much larger Catalina's and Beneteau's have them. What load factors would need to be considered and what thickness of SS would be needed?
Any help on this would be very much appreciated. I'm running out of options.
I’m attaching pictures of what I currently have and what I see on other boats.
From the last photo, it appears there is a SS strap that connects to the forestay and the original roller was cast aluminium. This makes sense because cast aluminum is not that strong and it would put the forestay at risk if the cast aluminum is used to anchor the forestay.
While many of us try to maintain our boats in "factory condition" using only OEM parts, sometimes there are better ways. If this was my boat, I'd consider taking the cast stem head fitting off, check to see that the forestay is attached to a SS strap and that the strap is still in good condition, and then install an aftermarket bow roller.
While many of us try to maintain our boats in "factory condition" using only OEM parts, sometimes there are better ways. If this was my boat, I'd consider taking the cast stem head fitting off, check to see that the forestay is attached to a SS strap and that the strap is still in good condition, and then install an aftermarket bow roller.
Are you able to send me a picture of it? If it has the same dimensions, I may be able to use it as a template for a new SS one.
My problem with this is I'm not sure what base alloy is most often used on these connections. I used to think they were usually just 316 stainless steel, but recently I've been discovering that 17-4 PH may be used. The difference is quite notable. 316 has a UTS of about 80 ksi and 17-4 PH in the H900 condition (the most commonly used condition) has a UTS of 190 ksi. Notable difference.
Does anybody know what base alloy is actually used on structural hardware like these connections?
dj
You might be over thinking a bit. The bow tang will not have more pressure on it than the breaking strength of the forestay. The forestay is likely either 316 or 304. If the tang is larger than the forestay, then it will be safe. Here's a chart showing breaking strengths of 316 wire: Wire Breaking Strength - Hayn Enterprises
Rigging Only or Rig Rite can provide more guidance. Dan at Rigging Only is very knowledgeable and their prices are competitive. Give him a call.
When we purchased our previous boat (1983 O'day 34), the anchor roller must have suffered an impact which necessitated a repair, replacing one leg of the anchor roller frame. I have a couple photos of the original bow plate which was cast aluminum. There was a stainless strap that bolted through the top of the bowplate and deck, and wrapped down the stem as shown in another photo. Both this stainless strap and the strap on the transom for the backstay had teak backing on the inside of the boat - and both were in poor condition. I replace the bowplate with a stainless one fabricated locally, and replaced both of the teak backers with 1/4" stainless plates. Probably overkill, but I figured might as well go big.
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Replied to your private message, but looking at your photos, it looks like you may have the original bow plate, but the anchor roller has been broken or cut off. On mine, the stainless strap was bolted through the plate and deck, and the forestay was attached to a pin that went through the parallel castings. Do you seen any holes in the plate aft of the forestay attachment where it may have been bolted through? If I recall, it seems like my stainless strap extended down the bow stem further than yours. Do you see any evidence of holes that were filled or repaired?
