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Search: Posts Made By: WizardOfBoz
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12-09-19, 01:08 PM
Replies: 5
Views: 197
Posted By WizardOfBoz

I particularly like the valves. For lubricant?...

I particularly like the valves. For lubricant? Cooling water?
12-09-19, 08:51 AM
Replies: 37
Views: 781
Posted By WizardOfBoz

I think we are in violent... agreement. Yes,...

I think we are in violent... agreement. Yes, setting up the wheel to be true on a faceplate would not be my idea of a good time. I agree with your idea of fixturing. perhaps true the wheel really...
12-08-19, 11:26 PM
Replies: 37
Views: 781
Posted By WizardOfBoz

I grew up working in a machine shop. Modern...

I grew up working in a machine shop. Modern metalworking doctrine is that you use an extremely rigid machine to cut metal, with a rigid fixture holding the workpiece. Else you get chatter, grabbing...
12-08-19, 12:06 PM
Replies: 60
Views: 1,876
Posted By WizardOfBoz

So is the English threaded cup just for test, or...

So is the English threaded cup just for test, or are you planning on using it? That might be hard: remember, the French steerer tube is 25mm OD (outside diameter), and an English thread is made for a...
12-06-19, 10:30 AM
Replies: 38
Views: 1,025
Posted By WizardOfBoz

That is pretty awesome.

That is pretty awesome.
12-06-19, 10:29 AM
Replies: 38
Views: 1,025
Posted By WizardOfBoz

Ah, for that you need a bench, too. This list is...

Ah, for that you need a bench, too. This list is getting big!
12-05-19, 12:35 PM
Replies: 38
Views: 1,025
Posted By WizardOfBoz

All good. cycocommute's list is awesome. He...

All good. cycocommute's list is awesome.

He lists a needle-nose wire cutter. If this is a needle-nosed plier with a wire cutter I agree. Very nice to have, Also standard pliers are nice for...
12-05-19, 12:18 PM
Replies: 14
Views: 290
Posted By WizardOfBoz

Is rolling backward a common activity for you? ...

Is rolling backward a common activity for you? To steal an idea from Vaudeville, stop rolling backwards.

But does this happen when you pedal backward? As a diagnostic, this issue may have been...
12-05-19, 10:54 AM
Replies: 107
Views: 10,656
Posted By WizardOfBoz

If the air is saturated, and you have water...

If the air is saturated, and you have water condensing (as you might with a tire pumped up with air from a hand pump) the compressibility will not follow the idea gas law very well because an...
12-04-19, 12:49 PM
Replies: 107
Views: 10,656
Posted By WizardOfBoz

Yup. If there were only diffusion, the size...

Yup. If there were only diffusion, the size would play a pretty strong part - mostly as a function of molecular velocity and not due to a filtration-like effect. The diffusion rate is proportional...
12-04-19, 12:28 PM
Replies: 107
Views: 10,656
Posted By WizardOfBoz

Not exactly. There's a difference between...

Not exactly. There's a difference between "extracted from" and "produced from". He is an element and it takes pretty extreme conditions (like the core of the sun) to "produce" He from hydrogen. ...
12-04-19, 12:02 PM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

Excellent! A couple of things I learned: FSA...

Excellent!

A couple of things I learned: FSA supplies the entire BB, so the non-standard bearings are not as much of an issue to the consumer. Still, I wonder why they chose 19mm when 20mm gives...
12-03-19, 01:21 PM
Replies: 37
Views: 781
Posted By WizardOfBoz

tomtomtom123 is correct. First, the rim mfr did...

tomtomtom123 is correct. First, the rim mfr did some weight optimization vs strength. Removing metal arbitrarily is going to give you weak rims. On an ebike? Nein danke.

Second, there is no way to...
12-03-19, 01:14 PM
Replies: 6
Views: 195
Posted By WizardOfBoz

I think that the FD derailleur cable originally...

I think that the FD derailleur cable originally was routed through the broken off guide, and then through the guide it currently goes through. So the first (now broken) guide gave you parallel...
12-03-19, 12:56 PM
Replies: 24
Views: 318
Posted By WizardOfBoz

Mark, to be clear, after my discussion with the...

Mark, to be clear, after my discussion with the SKF guy (who was a SERIOUS bikey) I understand now why the roller is superior to a taper roller for this application. So I agree with you: no one...
12-03-19, 09:58 AM
Replies: 24
Views: 318
Posted By WizardOfBoz

That's too bad - tapered roller bearings would...

That's too bad - tapered roller bearings would seem to be the perfect setup. None of the sliding issues that your note mentions. Another issue with the design is the spacer - one could make the...
12-02-19, 08:45 PM
Replies: 24
Views: 318
Posted By WizardOfBoz

Agree with Mark: grease the side touching the...

Agree with Mark: grease the side touching the rollers like you would ball bearings. Enough to cover and lube. Cover the other side, and mating surfaces thinly to prevent water getting in and...
12-01-19, 05:04 PM
Replies: 60
Views: 1,876
Posted By WizardOfBoz

I made an error in the note above (quoted below)....

I made an error in the note above (quoted below). ISO threads are 1" x 24tpi. The old French threading is 25mm x 1mm pitch. So running a larger diameter ISO die over a French steer tube would not...
12-01-19, 11:04 AM
Replies: 107
Views: 10,656
Posted By WizardOfBoz

I agree with cyccocommute on the Argon issue and...

I agree with cyccocommute on the Argon issue and the technical issues of diffusivity of a gas through rubber. It's not just a matter of molecular size. Compatibility (essentially solubility) must be...
12-01-19, 11:01 AM
Replies: 107
Views: 10,656
Posted By WizardOfBoz

Kind of. Pure N2 is used because tire pressure...

Kind of. Pure N2 is used because tire pressure varies less when N2 is used over N2 and O2 (that is, air). Moisture is not much of an issue if you use a compressor because most of the moisture...
12-01-19, 10:05 AM
Replies: 7
Views: 436
Posted By WizardOfBoz

Maybe this is obvious to someone. If not, what is...

Maybe this is obvious to someone. If not, what is the diameter?
12-01-19, 09:47 AM
Replies: 60
Views: 1,876
Posted By WizardOfBoz

Alex, It is sobering to note that a lot of folks...

Alex, It is sobering to note that a lot of folks in the Netherlands write using better English than some of us "'muricans." I grew up working in a machine shop (and my background is engineering) so I...
11-30-19, 11:00 AM
Replies: 37
Views: 2,365
Posted By WizardOfBoz

I think your question regarding using epoxy in a...

I think your question regarding using epoxy in a limited space is interesting. May be of interest that in a recent post in which the use of epoxy to glue in a protective washer for a fork tip (metal...
11-30-19, 10:17 AM
Replies: 10
Views: 260
Posted By WizardOfBoz

Agree, MH. Breaking the force dimensions into the...

Agree, MH. Breaking the force dimensions into the three parts was my attempt to show that the forces have to be the same in all directions: lateral (the sum of the each tension times the sine of the...
11-29-19, 02:40 PM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

The washer idea will probably work, but the best...

The washer idea will probably work, but the best approach would involve not putting any force on the inner race. Good luck. Nice that you don't have to replace your crank.
11-29-19, 01:58 PM
Replies: 10
Views: 260
Posted By WizardOfBoz

Thanks for the nice note, torger. I think others...

Thanks for the nice note, torger. I think others have done this (the thread you quoted) so you should be able to true the thing after some fashion, especially with a reinforced deep section CF rim.
...
11-29-19, 10:33 AM
Replies: 28
Views: 657
Posted By WizardOfBoz

MH, Thanks. I can see that if the club heads are...

MH, Thanks. I can see that if the club heads are bored properly, and the shafts are of proper size, then you should be able to know the epoxy thickness very well. Is centering the shaft in the club...
11-29-19, 10:16 AM
Replies: 10
Views: 260
Posted By WizardOfBoz

Well, I enjoyed your post and commend you on...

Well, I enjoyed your post and commend you on doing your homework and providing a diagram in asking your question. Nonetheless, I take issue with that statement. For modern hubs, even if the hubs were...
11-27-19, 04:33 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

Yes, well, this is Bike Forums. Where any...

Yes, well, this is Bike Forums. Where any innocent question or statement can be responded to with obdurate opinion without data in the most inflammatory manner! :)

I agree with you, but at the...
11-27-19, 04:06 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

Anklework, you have a theory that one can never...

Anklework, you have a theory that one can never apply too much clamping force, and that with the right glue, you can never squeeze enough glue out to weaken a joint. You state generalities and ask me...
11-27-19, 02:36 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

I called West Systems (epoxy maker) tech service....

I called West Systems (epoxy maker) tech service. Talked to Don. I asked

1) What West Systems product is recommended for carbon fiber? Answer: They recommended their 105 series resin and their 200...
11-27-19, 12:55 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

BTW, any idea what the "mechanical plate" in the...

BTW, any idea what the "mechanical plate" in the pic above is?
11-27-19, 12:53 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

As thin as practical, but not too thin would seem...

As thin as practical, but not too thin would seem to be the proviso. What you say is true, provided you don't clamp the thing so hard you end up with no glue in the joint. For a wood glue example,...
11-27-19, 08:25 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

So the issue is that FSA markets a fabricated BB...

So the issue is that FSA markets a fabricated BB that includes the cartridge bearings we are talking about. The OP pulled the bearings but it would have probably been easier to pull the BB assembly....
11-26-19, 04:40 PM
Replies: 22
Views: 649
Posted By WizardOfBoz

Yeah, I can think of a situation where you or...

Yeah, I can think of a situation where you or someone else built a wheel and it ended up to be a bit out of true radially but with the spoke tension about right all around. To move the rim away from...
11-26-19, 12:47 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

Bumping: Anyone? I did a search for the...

Bumping: Anyone?

I did a search for the Wilier GTR SL and the Wilier site offers these things. Mechnical plates. What do they do?...
11-26-19, 12:34 PM
Replies: 28
Views: 657
Posted By WizardOfBoz

So the answer to your question is yes. But...

So the answer to your question is yes. But contact the mfr or go through the LBS where you purchased this bike. See what they say. If no, report the make and what they said back here.

If no joy...
11-26-19, 09:01 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

DOS, its pretty clear you go into these decisions...

DOS, its pretty clear you go into these decisions more informed than most buyers. Clearly a lot of bicycles are sold with cool "features" that in truth have marginal, if any performance advantages...
11-25-19, 10:49 PM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

And one more view, from air velo bearings Europe....

And one more view, from air velo bearings Europe. Clearly, so non-standard that you can't use any other bearing. My idea to use a 6804 with a shim might be unworkable. Not sure, because we don't know...
11-25-19, 10:38 PM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

DOS, it sounds like you know what you're talking...

DOS, it sounds like you know what you're talking about wrt industry practices. But good heavens, this gets worse! The MR129 variant that FSA specified/designed/used has a TAPERED inner diameter. What...
11-25-19, 11:34 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

The 19BSW07 is a metric bearing. Dimensions here:...

The 19BSW07 is a metric bearing. Dimensions here:
https://bearingsize.info/catalogue-online/deep-groove-ball-bearings/bearing-19bsw07-nsk-obj152914.html
They appear to be used in automotive...
11-25-19, 10:44 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

My opinion as well. Make something very...

My opinion as well. Make something very non-standard. Sell it. To heck with supporting it, so that the owner can't find parts.

Never, ever an FSA component on a bike I buy.
11-25-19, 10:41 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

It seems like FSA chose a 19mm spindle diameter...

It seems like FSA chose a 19mm spindle diameter to ensure a captive aftermarket. In my view, that's an unforgiveable sin: I would never buy FSA anything because of their decision to be so...
11-25-19, 09:09 AM
Replies: 41
Views: 1,195
Posted By WizardOfBoz

To be clear, this statement is correct wrt size. ...

To be clear, this statement is correct wrt size. All 6804 and 61804 bearings should fit. But the "2RS" on your bearings means that they have two rubber seals, one on each side. You probably want...
11-24-19, 03:05 PM
Replies: 58
Views: 1,371
Posted By WizardOfBoz

Outstanding, Bigbus!

Outstanding, Bigbus!
11-24-19, 12:01 PM
Replies: 10
Views: 261
Posted By WizardOfBoz

Ah, yes, I see that the sl version is "silver"...

Ah, yes, I see that the sl version is "silver" meaning SS. BTW, Not all SS is fragile and brittle - Reynolds 953 is marketed as stainless (technically, its a high nickel maraging steel). There are...
11-24-19, 11:06 AM
Replies: 58
Views: 1,371
Posted By WizardOfBoz

I'm over 60 and weigh 245, and (using the...

I'm over 60 and weigh 245, and (using the principle of Aerodynamic Geriatric Spandexed Bulkitude) I spin out my 53-11 and get up to around 43mph when going downhill. And that's with legs that are...
11-24-19, 10:58 AM
Replies: 10
Views: 261
Posted By WizardOfBoz

I think you're right HillRider about the split...

I think you're right HillRider about the split ring spacer (and should have figured that out given my own experience with a modern headset). Still, I have a question. The picture in the docs shows...
11-23-19, 10:59 PM
Replies: 60
Views: 1,876
Posted By WizardOfBoz

Terminology: If he chased the internal threads on...

Terminology: If he chased the internal threads on the bearing race, he would use a tap. If he chased the external threads on the fork, then he used a die. Because bearing races are generally...
11-23-19, 02:58 PM
Replies: 10
Views: 261
Posted By WizardOfBoz

Agree with first point. On 2nd point, not so...

Agree with first point. On 2nd point, not so sure: the iodine headsets list for 70 and 100 bucks (here: Crank Brothers Directset Iodine - $72.95 - Bike Parts 360...
Showing results 1 to 50 of 1000
 


 
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