'84 FJ1100 resto mod

[FJmonkey]

Pat, he would need to cross drill to connect the two ports and then plug the cross drill to seal it up. One of the existing after market plates are made the same way using 2 O-rings.

[Pat Conlon]

Yes, I remember seeing that, kinda complicated, but your way work wouldn't it?
I wonder if 2 small O rings are stronger in resisting the oil pressure vs the slot and 1 larger O ring.

[FJmonkey]

Yes, I remember seeing that, kinda complicated, but your way work wouldn't it?
I wonder if 2 small O rings are stronger in resisting the oil pressure vs the slot and 1 larger O ring.

Yes, it will work, it is only keeping the fork oil from leaking out while it passes through the groove. Not much pressure to hold back. But the smaller O-ring will have less fluid pushing on it. Think pressure per square Inch. A larger piston will push with greater force than a smaller one, it just won't move as far. In the case of a seal, no movement is the goal.

[Pat Conlon]

Gotcha, thanks Mark!

[stou]

I don't know what type of pressure is involved with the fork oil, so I suspect it's a good idea going to a O ring design instead of a paper gasket....just a hunch.
Question: If you need to slot the block off plate, how are you going to get a seal with 2 round o rings?
One large O ring like Monkey shows on his plate is the way to go.

That's the beauty of 3D printing. I can design the 2 round holes with the o'ring grooves and a channel in the part to connect the 2 holes. No need to do a cross drill hole, it will be print. I'll do the design later this week and I'll show you.

[Pat Conlon]

Cool, I look forward to it!

Cheers

Pat

[Dieselman7.3]

Just out of curiosity what do the ports do? You couldn't dead head them?

[stou]

I had some spare time and did the changes to my design. Here's what it look like.

Just out of curiosity what do the ports do? You couldn't dead head them?

This allows the oil to flow and do is work. If the holes are block, it's like the anti-dive is always on and the fork become very hard.

[Pat Conlon]

Don't need no stinking cross drilling.....very cool. I bet RPM could sell some of those...

[Motofun]

Cool.  The only thing I'd recommend is a proper o ring groove.   

[stou]

I did the exact same groove like the one on the anti-dive part. It is flat but not deep, so the o'ring is very compressed when the part is bolt on. It should work fine.

[Dieselman7.3]

[quote/]

This allows the oil to flow and do is work. If the holes are block, it's like the anti-dive is always on and the fork become very hard.
[/quote]

Thanks. I figured it would have been like non anti dive forks if it was dead headed. But makes sense if the ports are there then they'd still be needed... I don't think my anti dives work or atleast not noticeably

[Pat Conlon]

I don't think my anti dives work or at least not noticeably

It is safe to say, you are not alone....

[stou]

Here's the printed part. It's a little bit hard to see the chanel on the photo but there is a 6mm hole between the 2 o'ring holes.

[Dieselman7.3]

I don't think my anti dives work or at least not noticeably

It is safe to say, you are not alone....

I remember my old 86 not working correctly either lol.  How effective were they back in the day?