Delta V 2000 Headshok headset bearings - help please!
- Thread starter Guy Redshaw
- Start date
I would check bearing suppliers. You will need accurate measurements of OD, ID, and thickness. Also check with Craig at Mendon Cyclesmith. He does a lot of Cannondale fork service work.
http://mendoncyclesmith.com/
If you can't find one, you might consider converting to the newer style headset. I believe this one will work but you should check dimensions thoroughly.
https://www.ebay.com/itm/Cannondale...=item3f85ce4f63:g:ZjcAAOSw30tZp-7I:rk:24:pf:0
http://mendoncyclesmith.com/
If you can't find one, you might consider converting to the newer style headset. I believe this one will work but you should check dimensions thoroughly.
https://www.ebay.com/itm/Cannondale...=item3f85ce4f63:g:ZjcAAOSw30tZp-7I:rk:24:pf:0
Guy Redshaw
Active Member
Many Thanx!
petergt4
Well-Known Member
These early headsets used bearings in INCH sizes, not the typical metric dimensions.
They are type B543-2RS (and are also known as 397508-2RS). They'll be listed in metric dimensions of 50.8mm x 39.7 x 7.14mm (which corresponds to 2" x 1 9/16" x 0.28").
If you're located in Switzerland, these should be easier to get. I haven't purchased from them, but will soon:
https://www.kugellager-shop.net/397...r.html?___store=english&___from_store=deutsch
They are type B543-2RS (and are also known as 397508-2RS). They'll be listed in metric dimensions of 50.8mm x 39.7 x 7.14mm (which corresponds to 2" x 1 9/16" x 0.28").
If you're located in Switzerland, these should be easier to get. I haven't purchased from them, but will soon:
https://www.kugellager-shop.net/397...r.html?___store=english&___from_store=deutsch
Guy Redshaw
Active Member
Do you not have the old bearing? Should be a part number on it which you can take to bearing supplier. I suppose I can pull the fork off my 1992 and see if there's a number if you can't figure out the bearing from dimensions.
I'm guessing the OD is either 58.72 mm (2 5/16") or 60.32 mm (2 3/8"), probably the latter. Guessing the thickness is the same 7.14 mm (9/32") as the top, but could be 5/16" or 3/8". You will have to measure the ID but I'd guess it's either 47.63 mm (1 7/8") or 49.21 mm (1 15/16").
I'm guessing the OD is either 58.72 mm (2 5/16") or 60.32 mm (2 3/8"), probably the latter. Guessing the thickness is the same 7.14 mm (9/32") as the top, but could be 5/16" or 3/8". You will have to measure the ID but I'd guess it's either 47.63 mm (1 7/8") or 49.21 mm (1 15/16").
Guy Redshaw
Active Member
Sadly I don’t have the old bearing. I’ve bought the bike in bits as it was a very unfinished project. The OD is about 57mm and the inside about 45mm. Mendon cyclesmith got back to me today (fast) and can’t help, so I’ve contacted a few other bearing place including the place Petergt4 recommended. I like a challenge. Thanks for the help and advice. Will update you on progress cos I won’t be the only person looking for oneo& these.
OK, 57.15 works out to 2 1/4", so I'd start looking for that OD.
Closest I have been able to find is a 6809, which is 58 mm x 45 mm x 7 mm.
https://www.ebay.com/itm/6809-2RS-t...h=item1eca06526e:g:mOYAAOSwstxVGAzG:rk:1:pf:0
Might take some machine work on both the fork and the headset cup to make it work.
https://www.ebay.com/itm/6809-2RS-t...h=item1eca06526e:g:mOYAAOSwstxVGAzG:rk:1:pf:0
Might take some machine work on both the fork and the headset cup to make it work.
Guy Redshaw
Active Member
That ebay one looks like it’s the one. I’ll get one and try it and report back. Many thanks. I really appreciate your help.
Total guess on my part, but I couldn't find any inch sized bearings anywhere with closer dimensions. Seems odd that Cannondale would have specified an inch sized bearing on top and a metric on bottom but I guess that options are limited in that size range. You should be able to find that bearing somewhere in Europe. Please do report back on what you find.
I have come to the conclusion that the later headset that I first suggested would likely fit the frame, but the lower bearing may not fit the fork. I've never had the fork out of my Delta V900 so don't know the dimensions. It would be nice to document the early Headshok fork dimensions.
I have come to the conclusion that the later headset that I first suggested would likely fit the frame, but the lower bearing may not fit the fork. I've never had the fork out of my Delta V900 so don't know the dimensions. It would be nice to document the early Headshok fork dimensions.
Guy Redshaw
Active Member
Will take photos and measurements as I rebuild it and send you them.
Thanx again.
Thanx again.
petergt4
Well-Known Member
My apologies, I misread your post and didn't read the 60mm reference, nor did I see the difference in proportions to head cup size in your photo.
This "Type 1" Headshok fork went through variations during it's brief production run. The fork I have for reference I bought separately and I believe it was made during late '92/early '93 and would have been for the SuperV (curved fork legs painted black with silver splash and purple anodized head cups). Both bearings are the same size in inch. When you mentioned yours was a 1991, I assumed they were the same size! It was only after your post I remembered (vaguely), there was a switch, but can't remember if it was early in production, or late.
This is my love/hate relationship with Cannondale, I love their advanced technology, but they were constantly changing/upgrading their specifications and it's hard to keep track! In the near future, I'll post information and photos of the disassembly of my fork here on this forum, for future reference. It's been said these forks can't be serviced and I see what they mean. I'll figure out a way how to!
You have your required measurements to find the needed bearing; you have the ID of the machined recess in the head cup (for bearing OD), you have the OD of the shoulder of the steerer (for bearing ID) and you have the thickness by the depth of the recess in the head cup. With that, it should be able to be found.
petergt4
Well-Known Member
In my reply to Guy, the fork I have, I have completely disassembled it and will post info and photos at a later date. It's an incredible piece of engineering that is even more amazing considering what was available at that time. Even their later models of forks are a step down compared to this first generation one.
I can see why it's said that they can't be rebuilt/serviced, but I believe there is a way around it, if I make a custom piece to allow oil to be poured in without trapping air (which is why many forks have been killed when they're taken apart!).
Can the fork be pulled out of the frame without disturbing the shock/spring assembly? The only Headshok that I've removed from the frame was on a 1995 Silk Road that had seized roller bearings. It came out without any problems.
petergt4
Well-Known Member
I don't know the part number of the tool, but there's one that you place on top of the steerer tube assembly that clears the adjuster/Shraeder air valve and you smack it with a hammer, which drives out the whole assembly. Obviously, you remove the stem and, if the bike is old enough, loosen the two tiny allen head pinch screws on the headset cups.
I don't recall seeing pinch bolts on the cups of my 1992 Delta V. Not sure if mine was made early in the run or late. Looking at the 1993 catalog pic of the DV700 I can see what looks like screw heads on both cups. Will have to check mine.
Guy Redshaw
Active Member
Success!
The bottom bearing arrived from Germany today and it took 5 minutes to get both bearings on and the front end bolted up. Attached are the photos for everyone else’s Benefit. Many thanks for all your help. The project moves on a step!
The bottom bearing arrived from Germany today and it took 5 minutes to get both bearings on and the front end bolted up. Attached are the photos for everyone else’s Benefit. Many thanks for all your help. The project moves on a step!
Glad it worked. Great to have those part numbers here.
Awesome. Agreed, it is great to have the photos and part numbers. Now time to build it up!
http://community.vintagecannondale.com/forums/share-a-restoration-project.13/
http://community.vintagecannondale.com/forums/share-a-restoration-project.13/