MoCo Replacement Damper

[@randomtreaz7252]

Nice approach!!

[@leafydialupking1]

Glad you think so!

[@Olives_ia]

Wow! Cool idea

[@leafydialupking1]

Thank you! Cheers!

[@saraho5846]

That’s awesome. 👏🏻

[@leafydialupking1]

Thanks

[@jeremys2159]

Impressive for FDM - I think your problems with sealing would be a lot less if you printed in SLA or Polyjet.

[@leafydialupking1]

I wish I had an sla or poly jet budget. I need a lathe next so I don't have to thread the shafts with a die by hand.

[@zoltankorossy2957]

@@leafydialupking1 Design it to use readily available threaded rod you just cut to length.

[@leafydialupking1]

@@zoltankorossy2957 then I really won't be able to get a seal on the shaft. One of the first revisions I used a threaded rod and welded a sleeve on where the seals were.

[@mrjamieholloway]

Hi, I have a Rockshox 35 RL gold. I'd like to try one of your dampers. Where are you based? Do you have an option for the 35 Gold I can purchase to test unit or final product? How far have you got with this project? Also I have access to a 3D printer and a guy who knows how to use it. :)

[@leafydialupking1]

I don’t believe this damper fits the 35 gold or recon. I think they use a different diameter damper. I kind of gave up on this project to be honest since I don’t have any rs forks anymore.

[@joshwebb7176]

Are you making these for old school forks, I have a 318 that needs one desperately

[@leafydialupking1]

I could for sure, I just need a factory damper to get sizing off of. Once I was happy with this design and got it launched I was planning to do recon/35 gold next, but there probably is a bunch of guys with those old forks that can't even get parts anymore that would be interested.

[@mediasucks]

@@leafydialupking1 DO.....THE....35 GOLD. That fork is completely hamstrung by SRAM. There's a thread on mtbr titled "Rockshox 35 Gold RL Disassemble - What's Inside?" - search for it (it includes a link to your floodgate spacer STL). If you have a Recon gold you always have options for shimmed Motion Control DNA RCT3 and shimmed rebound dampers. Recons with steel stanchions - not so much. If you need any dimensions for the 35 Gold MoCo, just ask. It's basically a 32mm MoCo with a larger topcap (that has a 0.8mm thread pitch that's incompatible with anything else SRAM sells) and larger diameter base.

[@moeywill]

There are definitely thousands of guys with old Recons and Rebas that Rock shox discontinued the oem moco dampers on. Can't buy them anywhere. You can't really even find a nice upgraded fork either when you don't have a tapered steer tube. My gate pin popped out on my reba and can't find a new damper for it. My shock still works great, but control knob and gate pin are now held on with tape. So I can't adjust compression dampening without removing tape. I have a sweet old bike too. First year 29er stumpjumper they ever made. 2008. Thousands of guys in same boat as me.

[@JustinWimpey]

Awesome. Well done. Where is the stl?

[@leafydialupking1]

IMO I never got it in a state that I was happy to release.

[@Eagle-yc9nr]

@@leafydialupking1 Do you happen to have any of your old forks? I'd buy them from you. Depends on the pricing

[@underbikedoverconfident1142]

Hey, impressive stuff! Have you found anywhere in your research a resource for the sizes of thread and internal stanchion diameter for Rockshox forks?

[@leafydialupking1]

I can’t find my notes at the moment but I’m sure I measured it. It was definitely a standard thread profile so you should be able to figure it out yourself with some caliper and a thread pitch gage.

[@underbikedoverconfident1142]

@@leafydialupking1 ah, ok. Thank you. I read something on an online forum that said they didn't use standard thread sizes. The problem is these types of sources aren't always reliable. I guess as you say a tear down of my own fork is the most reliable source.

[@leafydialupking1]

@@underbikedoverconfident1142 Well they dont use standard sizes, but they do use standard thread form. Like the profile of the thread is the same as a normal bolt not like an ACME thread or some other special profile so you can use standard thread pitch gages on it and you could use a normal single pointing tool to make the thread on a lathe. But the threads are odd sizes, like the thread I printed on this part is M34x0.5 Left Hand, way finer than any normal M34 and not Right Hand as standard.

[@underbikedoverconfident1142]

@@leafydialupking1 OK, got it. Thank you, seriously this has been super helpful information. I was worried it was some sort of strange threads my eyes and gauge wouldn't pick up. That I can deal with.

[@joshwebb7176]

Yeah sorry also what an awesome idea

[@leafydialupking1]

Thanks

[@zoltankorossy2957]

Any update on this?

[@leafydialupking1]

I bought a new bike with a dvo fork so my motivation is waining.