Inverted forks 02 Pro Sport Need Help.

Ernie12

Active Member
Well I have been trying to find a wiper seal before I put the forks back together and I think I found a solution. I could not find the right size in black but who cares.

Update: The wiper seals turned out to be a little snug over the threads at the bottom of the fork where I had to slide them on. They would slide on ok but when I tried to pull one back off it was almost impossible. So I had to sand down the part of the seal that rubs on the fork enough to be able to get it back off in the future. They work much better now and I can get them back off if I ever have to .

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TapioK

Well-Known Member
Slight off the topic, but buddy here has Ultima upside down that is leaking a bit. Seems like Ultima doesn’t sell any parts to those, in fact from their site it seems they don’t sell upside down forks at all anymore.
 

wezxwezx

Member
Hey Ernie, old thread so hopefully you still frequent the forum! I also have Mean Street forks on my Bourget though mine are what they called “Forkzilla” LOL with the huge 78mm upper tubes and 41mm sliding tube (stanchion), and like you it’s been nearly impossible to get any information on them. Originally it was even nearly impossible to find out what brand the forks were…nobody knew until I talked to Tony at Big Tony’s Chopper Shop down in Florida. Tony knew immediately…he said “Yeah those are Mean Street - they went out of business”. So then I went about tracking down Mean Street. Discovered that there were two brothers Mike and Tim Hanlon and they went out of business probably a decade ago. They’re both from El Paso. I ended up speaking to Mike and he was pretty cool but he didn’t have a lot of info to give me. He said he didn’t have any documentation and he didn’t remember a lot of the things because it’s been so long. I then tracked down Tim Hanlon on Facebook and messaged him and he got back to me and answered a couple of questions that I’ve had since getting the bike in 2015. For mine he told me to use 10w fork oil and 12oz of oil. Other sizes of forks would be different volume I imagine. Like you, it was a bit of a discovery taking them apart because of course no one could tell me how they were put together! I was very interested to see your photos and experience of taking the bottom foot off. My damper rod seems to be working fine and I didn’t think I would take off the foot because they can be such a pain to get off and I didn’t wanna take a chance on damaging the threads. I have however been unbelievably curious as to how the damper rod is connected to the tube and I could almost see the bottom of the tube in your photo. I didn’t see a bolt or an Allen head opening on the bottom of your tube but the angle was kind of hard to see. Were you able to tell how the damper rod is attached to the bottom tube? Is there a bolt there coming up from the bottom or is the damper just held in place by the foot being screwed on? Is the damper screwed into the bottom of the leg somehow? I noticed there were flats on what looks like the bottom of the damper/tube? Also, I was puzzling over how to source a replacement wiper seal and your post here was supremely helpful! My plastic rings were also chewed up though mine were a whitish yellow color. After seeing your post I now realize that somebody had sliced up the seal to get them on as they probably had trouble like you did. I’m thinking if you take a very thin piece of material maybe wax paper? And wrap it around the leg and then get the seal started should be able to get it on and off the tube easier? Thank you for all your many photos and that photo from the O-ring store. It looks like you have 41mm tubes as well because that 1.625 inch wiper seal would be the right size for 41mm tubes.
 

Mickmorris

Well Known Member
Supporting Member
Hey Ernie, old thread so hopefully you still frequent the forum! I also have Mean Street forks on my Bourget though mine are what they called “Forkzilla” LOL with the huge 78mm upper tubes and 41mm sliding tube (stanchion), and like you it’s been nearly impossible to get any information on them. Originally it was even nearly impossible to find out what brand the forks were…nobody knew until I talked to Tony at Big Tony’s Chopper Shop down in Florida. Tony knew immediately…he said “Yeah those are Mean Street - they went out of business”. So then I went about tracking down Mean Street. Discovered that there were two brothers Mike and Tim Hanlon and they went out of business probably a decade ago. They’re both from El Paso. I ended up speaking to Mike and he was pretty cool but he didn’t have a lot of info to give me. He said he didn’t have any documentation and he didn’t remember a lot of the things because it’s been so long. I then tracked down Tim Hanlon on Facebook and messaged him and he got back to me and answered a couple of questions that I’ve had since getting the bike in 2015. For mine he told me to use 10w fork oil and 12oz of oil. Other sizes of forks would be different volume I imagine. Like you, it was a bit of a discovery taking them apart because of course no one could tell me how they were put together! I was very interested to see your photos and experience of taking the bottom foot off. My damper rod seems to be working fine and I didn’t think I would take off the foot because they can be such a pain to get off and I didn’t wanna take a chance on damaging the threads. I have however been unbelievably curious as to how the damper rod is connected to the tube and I could almost see the bottom of the tube in your photo. I didn’t see a bolt or an Allen head opening on the bottom of your tube but the angle was kind of hard to see. Were you able to tell how the damper rod is attached to the bottom tube? Is there a bolt there coming up from the bottom or is the damper just held in place by the foot being screwed on? Is the damper screwed into the bottom of the leg somehow? I noticed there were flats on what looks like the bottom of the damper/tube? Also, I was puzzling over how to source a replacement wiper seal and your post here was supremely helpful! My plastic rings were also chewed up though mine were a whitish yellow color. After seeing your post I now realize that somebody had sliced up the seal to get them on as they probably had trouble like you did. I’m thinking if you take a very thin piece of material maybe wax paper? And wrap it around the leg and then get the seal started should be able to get it on and off the tube easier? Thank you for all your many photos and that photo from the O-ring store. It looks like you have 41mm tubes as well because that 1.625 inch wiper seal would be the right size for 41mm tubes.
Yes. Ernie is on here often. He should see this post for sure.
 

wezxwezx

Member
Also, my old wiper seals are similar to yours except mine are a yellowish white. I’m thinking these are urethane or polyurethane? The new blue one you put in is urethane. Wiper seals are also made in Nitrile Rubber. I’m wondering if the rubber ones might be easier to install over the tubes and yet still seal the same? Wondering if there was a specific reason that the OEM wiper seals are urethane? The fork seal itself is rubber...you would think that a rubber wiper seal would be fine?
 

wezxwezx

Member
Forgot to mention, mine came apart normally by pulling the lower fork tube out of the upper and thereby removing the old seal. Seems odd that you had to run the lower tube up through the upper tube to remove it?4CCEF843-9B72-4EF8-9001-2797FE833D73.jpegF74CFA28-C9C8-48DD-AAA1-3A015025960B.jpeg
 

Ernie12

Active Member
Hey Wezx, yours must a little different than mine if you were able to pull them apart. With regards to the damper, after I took the foot off it looks like you could put a wrench on it to unscrew it but it was just held in by an o-ring. I was able to put a new o-ring on it and tap it back in and then screw the foot back on.
 

wezxwezx

Member
Wow! Just held in with an O-ring! Thank you for that...I’ve been so curious about it, but I really didn’t want to take off the foot to find out! LOL

I think I may go with a rubber wiper seal?...can’t imagine it would make much difference in its ability to act as a wiper? I mean, the fork oil seal itself is rubber...What do you think? Rubber wiper seals I can source locally from McMaster-Carr and go pick them up.

From the diagrams it looks like mine was an “H seal” because it has a V groove on the non-wiper side and a single step to the wiper on the wiper side.
 

wezxwezx

Member
Did you do any servicing of the damper? I’m still wondering if I should remove the feet and completely disassemble everything? I’m nervous though because what if I have a hard time unscrewing the feet and I inadvertently damage the threads? The forks were working fine, it had just been four years since the seals/bushings had been changed and I had a small leak in both forks so I’m thinking I should leave well enough alone and just reassemble with new seals/bushings? Is the damper even something that is serviceable or do you just replace it as a whole? I’ve got very limited fork damper experience...never had one apart. I believe there are a series of metal shims inside that cause the pumping action of the damper? Are there O-rings inside the damper that might need replaced? Sorry for all these questions! LOL I’ve been scouring the Internet but there doesn’t seem to be a lot of info on damper rod servicing and as I’m sure you know, zero information on the inner workings of Mean Street forks.

I did fabricate some tools for working with the forks you might find interesting? One is just a simple spanner wrench for the top cap and the other is a tool you attach to the fork tube at the top by the 2 holes in the tube that you can then clamp into a vice or attach short lengths of 3/4” black pipe to fashion a T-handle 9B370DFF-720C-4ECF-8302-76D2866B7056.jpeg3B08CAF4-F28C-4B86-A05C-3AF852290853.jpeg5BF4C25D-68DE-4430-98FC-E59DBEC8A840.jpegand then use the axle to turn the foot off after applying heat - did it look like your threads that go into the foot had thread locker? Hot much heat did you have to use to get the foot off? Also worried about bending the axle when using it to get the feet off. I know it’s hardened steel but I’m guessing it could still be bent with too much force? Once again, sorry for all the questions...you’re just the only person I’ve been able to find who has had these Mean Street forks apart! LOL
 

Ernie12

Active Member
I did not service my damper because I could not find any parts and it seemed to work fine. I just replaced the O-ring when the end of the damper popped out. (thats how I found out it was just held in by an O-ring, so when you screw the foot back on that is what keeps it from popping out). I never would have taken the feet off if I did not have to. One of the feet came off pretty easy but the other one was tuff because the threads had rust on them and I just used a heat gun and a vice. I like your spanner wrench you made , I found one on Amazon for $12 that worked perfect. I just thought of one other tip I can give you that I got from Mr. Wright on the forum was to count the turns when you take the top cap off. I dont know if you did that but for a reference I think mine was 11 turns. It was a bitch getting the wrench through the spring to hold on to the lock nut until I bought a wrench set that was flat and thinner than most wrenches. Good luck you seem like to got this.
 

wezxwezx

Member
I did not service my damper because I could not find any parts and it seemed to work fine. I just replaced the O-ring when the end of the damper popped out. (thats how I found out it was just held in by an O-ring, so when you screw the foot back on that is what keeps it from popping out). I never would have taken the feet off if I did not have to. One of the feet came off pretty easy but the other one was tuff because the threads had rust on them and I just used a heat gun and a vice. I like your spanner wrench you made , I found one on Amazon for $12 that worked perfect. I just thought of one other tip I can give you that I got from Mr. Wright on the forum was to count the turns when you take the top cap off. I dont know if you did that but for a reference I think mine was 11 turns. It was a bitch getting the wrench through the spring to hold on to the lock nut until I bought a wrench set that was flat and thinner than most wrenches. Good luck you seem like to got this.
Hey Ernie, yeah I did count turns...I counted turns and measured EVERYTHING cause I wasn’t entirely sure how these things were put together! LOL Mine are definitely a little different than yours in that I was expecting to have to compress the spring, but when I took the cap off the spring was compressed below an aluminum piece, then a large steel spacer and then another aluminum piece and when I loosened the nut all the way the tension was completely released. In other words, the nut being tightened was compressing the spring and putting tension on it. I was ready for a big fight with the spring but it just came right out after removing the nut, aluminum pieces, and spacer. Then there was a plastic tube that was over the rod and inside the spring. Go figure? Yeah, I’ve watched several of Delboy’s videos - good stuff! Do you happen to have a photo of the damper out of the leg? Just curious what it looks like?

Here’s a photo of the whole assembly that slides over the rod and then the nut and then the cap...E20D5169-B922-459D-8986-EC3AFC105547.jpeg
 
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