Machine shop to modify a freehub in the GTA

[Veloo]

Has anyone ever gone to/ found a good machine shop in the Toronto GTA that can do something like shave down a Shimano 10 speed freehub to fit 11 speed?

My friend with the Zipps and I are looking to get ours done.

[Black Dog]

You mean like this? This is one of mine that I did. PM me.

http://i900.photobucket.com/albums/ac209/BlackDogryka/Bike/JPEG_20160409_143715_-1027816115_zpsaxyjfbep.jpg

[redir]

I was just talking about this the other day to a friend. How much material has to be removed and do you think it will weaken it to any degree?

I've just been running all my wheels as ten speed on my 11 speed set up and honestly would not notice the difference but still, I'd love to have it done right.

[RedRider]

Just because you CAN do it doesn't mean you SHOULD do it...
A new Zipp 11 speed freehub body is $139 msrp. What would a skilled machinist charge? You are taking big risk that it would be done correctly. If you bought a new one you would still have a usable/resell-able 10 speed body.

[Black Dog]

I was just talking about this the other day to a friend. How much material has to be removed and do you think it will weaken it to any degree?

I've just been running all my wheels as ten speed on my 11 speed set up and honestly would not notice the difference but still, I'd love to have it done right.

exactly 1.8mm off the shoulder at the back of the free hub. Not all free hubs have enough width there to do this.

[bicycletricycle]

depending on the cassette, you can also machine some off of the back of the last cog carrier.

[Ti Designs]

Just because you CAN do it doesn't mean you SHOULD do it...

I use the same argument against smart phones...

A new Zipp 11 speed freehub body is $139 msrp. What would a skilled machinist charge?

I've done that four times for local riders, didn't bother charging them. Putting the body in the chuck takes next to no time, I use a DRO, so cutting with accuracy is easy. I don't see the need to bill for every minute, or maybe I'm just not a skilled machinist...

[bicycletricycle]

ya, even with the crapiest lathe it is a really easy job, I don't think most job shops would charge you more than 20 or30 bucks.

[donevwil]

I don't see the need to bill for every minute, or maybe I'm just not a skilled machinist...

Kudos to you, machining is fun. I had a skilled Tool Maker at work do a much more complex modification for a bag of home grown arugula.

[unterhausen]

I wish I had a DRO. I actually have one in the back room, but I don't have long enough scales. Story of my life

[eric01]

Edco monoblock cassette. I never tried it on older zips but I am currently using it on a 10 speed boutique carbon wheel set with dura ace 11 speed group. Works great

[giverdada]

hey friend:

our friend black dog is way the heck out there in dundas or hamilton or somewhere nicer to ride than we are, but he's the man and i'd trust him with the job. if you're looking to stay local, and really quirky but thorough and all that, i'd check out biseagal. they're on carlaw. malcolm's your guy. bring him a cheeseburger and some old speckled hen and you're off to the races. if he can't fix it, i don't know who can... give'r.

nick.

http://www.biseagal.com

[Black Dog]

hey friend:

our friend black dog is way the heck out there in dundas or hamilton or somewhere nicer to ride than we are, but he's the man and i'd trust him with the job. if you're looking to stay local, and really quirky but thorough and all that, i'd check out biseagal. they're on carlaw. malcolm's your guy. bring him a cheeseburger and some old speckled hen and you're off to the races. if he can't fix it, i don't know who can... give'r.

nick.

http://www.biseagal.com

Haha. Rockwood, near Guelph. The open invite to come out here for a ride is still in effect for you. Getting the freehub turned is an excuse to get veloo off his duff for a ride. I am not a machinist and this is an easy job. I would take zero offence if veloo found a local guy and saved some hassle for himself. You guys have a month and change to get ready for the GTA pace line ride. Are you going to put away the running shoes and get back on the bike? :beer:

[giverdada]

sweet. any excuse to get out there for a ride. gorgeous rockwood; how could i forget? i will put away the running shoes, or at least the race kits, after this ottawa marathon tomorrow. yeehaw. gonna be a scorcher. thanks for the ride invite. i'll be e-mailing you after exam season! ride on, brothers...

[Ti Designs]

Kudos to you, machining is fun. I had a skilled Tool Maker at work do a much more complex modification for a bag of home grown arugula.

It's a skill set (which happens to go along with the machine shop in my basement). I lack many of the common skill sets, but I have lots of the odd ones. I can't grow arugula, so I would gladly trade services. I also work for chocolate, wine...

[steelbikerider]

Anybody modify a DA hub? I have 4 pair of DA wheels and wonder if my 7850 hubs could be modified.

[Black Dog]

Anybody modify a DA hub? I have 4 pair of DA wheels and wonder if my 7850 hubs could be modified.

The Shimano Hubs are more difficult to modify given that the body is narrower than most and there is very little material to work with. I am not sure if they have been done with any success. You may have to google around a bit to find out.

[Mackers]

worked just fine on my 7700 hubs.

http://bonefish.home.xs4all.nl/10vs11.jpg

[GregL]

worked just fine on my 7700 hubs.
This is intriguing. I was under the impression that 7700 freehubs were challenging to machine because they are made of titanium. How was the freehub machined? How is the clearance with the spokes running an 11-25 or 11-28 11-speed cassette? My favorite wheels have 7700 hubs. I'd love to be able to use them on my DA9000-equipped bike.

Thanks,
Greg

[Mike V]

I just bought Ultegra cassettes and took off 1.85mm and can use it on any wheel.


MV

[Mackers]

This is intriguing. I was under the impression that 7700 freehubs were challenging to machine because they are made of titanium. How was the freehub machined? How is the clearance with the spokes running an 11-25 or 11-28 11-speed cassette? My favorite wheels have 7700 hubs. I'd love to be able to use them on my DA9000-equipped bike.

Thanks,
Greg

I did it all by hand, with a cloth, a good quality file, and vernier calipers.
Clearance is good, here's a picture of a mounted 11-25 cassette.
The (Campagnolo) rear derailleur has ~3 mm clearance at the closest point to the spokes. (28 spokes on a 25 mm rim)

http://bonefish.home.xs4all.nl/11%20speed%207700.jpg

[Black Dog]

I did it all by hand, with a cloth, a good quality file, and vernier calipers.
Clearance is good, here's a picture of a mounted 11-25 cassette.
The (Campagnolo) rear derailleur has ~3 mm clearance at the closest point to the spokes. (28 spokes on a 25 mm rim)

http://bonefish.home.xs4all.nl/11%20speed%207700.jpg

That is fantastic!!!

[8aaron8]

worked just fine on my 7700 hubs.

http://bonefish.home.xs4all.nl/10vs11.jpg

Hmmm, Now I'm tempted to try this on my 7700's.

[Joxster]

What happens if the freehub fails and you send it back to Zipp for warranty?

[seric]

What happens if the freehub fails and you send it back to Zipp for warranty?

I believe Freehub bodies are usually considered wear parts and are generally not covered by warranties except for very obvious problems in workmanship.

[Veloo]

Do you have pics of what you shaved off from the cassettes?

I just bought Ultegra cassettes and took off 1.85mm and can use it on any wheel.


MV

[Dead Man]

I've wasted so much money...

[onsight512]

You mean like this? This is one of mine that I did. PM me.

http://i900.photobucket.com/albums/ac209/BlackDogryka/Bike/JPEG_20160409_143715_-1027816115_zpsaxyjfbep.jpg

is that a South Bend?

[Mike V]

Do you have pics of what you shaved off from the cassettes?


http://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=127204


MV

[Black Dog]

is that a South Bend?

A very old one. Built for Pratt & Whitney in the 30's.

[redir]

IS there a tutorial out there on how to do this by hand?

[chromopromo]

I just shaved down my shimano 7850 freehub body last week. I used my dremel and a square edged file. The whole process took about 30 minutes. If you have a good sharp metal file, you can do it all by hand. Just remove the free hub (you need 14mm allen wrench) and start filing away. My metal file is crap so I got lazy and pulled out the dremel. The results were not as pretty but it made the process a lot faster. I didn't do any other modifications to the hub and the cassette fit fine. I only went on a short test ride but so far so good.

[seric]

IS there a tutorial out there on how to do this by hand?

If you have some throw away sprockets from another cassette, it might be worth mounting them to use as a guide. They would also help protect the rest of the freehub from the file or dremel. Although, finding someone with a lathe with beer in hand should get the job done in minutes. Most machinists are just happy to have someone ask them for something reasonable instead of the usual requests of .5 holes centered .250 from the wall of an aluminum block, etc...