First Wheelbuild
02-19-12, 05:49 PM
#26
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Join Date: Dec 2007
Location: San Jose, California
Posts: 3,504
Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
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#8, #11 #17 #19 and #24
I jumped in in general agreement that the impact of offset is minimal...not against....and just clarified for "kirosska" what Shimano was doing.
And merely pointed out why we measure to center of flange.
The expletive and painting me as going overboard on the finest of details as a negative...especially when I'm in general agreement...was not necessary.
=8-)
I jumped in in general agreement that the impact of offset is minimal...not against....and just clarified for "kirosska" what Shimano was doing.
And merely pointed out why we measure to center of flange.
The expletive and painting me as going overboard on the finest of details as a negative...especially when I'm in general agreement...was not necessary.
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
02-19-12, 06:02 PM
#27
Velocommuter Commando
This had been something that I had been meaning to do for a while now, but never got around to until recently. Riding self built wheels just has such a great appeal
to me. I wanted to build a wheelset that would add a better classic touch than my other wheels. The wheels I had been using always looked a bit too out of place to me.
The rims were the first thing I decided I would buy. After some pondering and then some looking around, I accquierd some NOS Mavic MA-2 rims.
Upon initally inspecting them, I could not help but laugh when I saw the original price tag still stuck on.
For hubs, I decided to go with the current Dura Ace hubs from Shimano.
To obtain the proper spoke length, I made sure to measure everything myself. I used the method described on Sheldon's site to find the ERD. I measured the ERD in three places
on each rim, coming out to 613mm on both rims. I was pleased that both rims were round and flat to start out.
I compared my measurements with the measurments Shimano has listed. Shimano's numbers still just don't make any sense; I don't know what the hell they were measuring.
https://www.shimano.com/publish/conte...ub%20Specs.pdf
My measurments, using a vernier caliper, came out as the following:
HB-7900 (front hub)
flange diameter - 38mm
hub center to flange center - 35mm
FH-7900 (rear hub)
flange diameter(L) - 44mm
flange diameter(R) - 45mm
hub center to flange center(L) - 34mm
hub center to flange center(R) - 18mm
Gerd Schraner's book "The Art of Wheelbuilding" was very helpful. I used his spoking method for my build. The illustrations were very clear, concise, and understandable.I also
used Sheldon's wheelbuilding page as a secondary source for everything else once I had finished all the spoking.
I went ahead and made sure the orientation of all the labels was "correct"; it seems like one either rolls his eyes at such a matter or holds it to some importance. I like
the aesthetics of it. Even if it isn't noticable when riding, I still like the idea of it. Besides, it was a very simple task.
I called it done when I got the true within 0.3mm; it became a bit too much trouble for me to get any lower. I had some dial indicators, but they were not as useful as I
thought they would be, though very cool to look at. The rear wheel took twice as long to complete. I lost track of how long it took me to complete both wheels, but it was definately
over 7 hours.
I used DT competition spokes throughout.
300mm front
299mm NDS
298mm DS
32 spoke count
3x cross
symmetrical
I am 135 pounds soaking wet. So, yeah, I'm expecting a lot of milage out of these.
I think I'll stick to personally building all my wheels from now on instead of sourcing the work to others. It's a lot more rewarding.
to me. I wanted to build a wheelset that would add a better classic touch than my other wheels. The wheels I had been using always looked a bit too out of place to me.
The rims were the first thing I decided I would buy. After some pondering and then some looking around, I accquierd some NOS Mavic MA-2 rims.
Upon initally inspecting them, I could not help but laugh when I saw the original price tag still stuck on.
For hubs, I decided to go with the current Dura Ace hubs from Shimano.
To obtain the proper spoke length, I made sure to measure everything myself. I used the method described on Sheldon's site to find the ERD. I measured the ERD in three places
on each rim, coming out to 613mm on both rims. I was pleased that both rims were round and flat to start out.
I compared my measurements with the measurments Shimano has listed. Shimano's numbers still just don't make any sense; I don't know what the hell they were measuring.
https://www.shimano.com/publish/conte...ub%20Specs.pdf
My measurments, using a vernier caliper, came out as the following:
HB-7900 (front hub)
flange diameter - 38mm
hub center to flange center - 35mm
FH-7900 (rear hub)
flange diameter(L) - 44mm
flange diameter(R) - 45mm
hub center to flange center(L) - 34mm
hub center to flange center(R) - 18mm
Gerd Schraner's book "The Art of Wheelbuilding" was very helpful. I used his spoking method for my build. The illustrations were very clear, concise, and understandable.I also
used Sheldon's wheelbuilding page as a secondary source for everything else once I had finished all the spoking.
I went ahead and made sure the orientation of all the labels was "correct"; it seems like one either rolls his eyes at such a matter or holds it to some importance. I like
the aesthetics of it. Even if it isn't noticable when riding, I still like the idea of it. Besides, it was a very simple task.
I called it done when I got the true within 0.3mm; it became a bit too much trouble for me to get any lower. I had some dial indicators, but they were not as useful as I
thought they would be, though very cool to look at. The rear wheel took twice as long to complete. I lost track of how long it took me to complete both wheels, but it was definately
over 7 hours.
I used DT competition spokes throughout.
300mm front
299mm NDS
298mm DS
32 spoke count
3x cross
symmetrical
I am 135 pounds soaking wet. So, yeah, I'm expecting a lot of milage out of these.
I think I'll stick to personally building all my wheels from now on instead of sourcing the work to others. It's a lot more rewarding.
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