Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


 

Messages - DaveB

Pages: [1] 2 3 ... 108
1
Also, would titanium make a good choice for something like a screw bit?
No, it wouldn't.  Given the proper alloy choice, Ti is strong and relatively light but it's strength and hardness doesn't even approach that of good quality tool steel that's properly heat treated.  There is a reason no one makes Ti tools for routine use.  As noted Ti is used for the specific job where a non-magnetic tool is essential and beryllium-copper is used where a non-sparking tool (oil and gas well service or other flammable atmospheres) is essential but where their expense and poorer strength isn't required no one uses them.

2
General Discussion / Re: 15mm wrench vs 9/16 wrench???
« on: May 23, 2017, 07:02:01 pm »
..... i have used a 15mm wrench on my Sun Ringle zuzu pedals and very lose fit!.... and not all pedals take 15mm wrench
9/16" is very close to 14 mm so maybe that's what the pedals require.  It would be unusual for those Asian-made pedals to require an SAE sized flats wrench even though the threading is "Imperial".

3
General Discussion / Re: 15mm wrench vs 9/16 wrench???
« on: May 22, 2017, 08:04:00 pm »
Hi Tim-  Just use the 6mm on the back.
Unless your pedals are one of the newer Shimanos that use an 8 mm.


4
General Discussion / Re: 15mm wrench vs 9/16 wrench???
« on: May 20, 2017, 08:06:43 pm »
I believe the OP is confusing the wrench flats (typically 15mm) used to install/remove the pedals with the pedal threading (typically 9/16" x 20tpi) that attaches the pedals to the threaded holes in crank ends. 

5
General Discussion / Re: United Airline Policy on Bikes
« on: May 18, 2017, 09:21:39 am »
As mentioned above, the 50 pound weight limit is not too difficult to meet.  However, the only way to meet the 62" combined L+W+H length limit with a "standard" bike is one with S&S or similar couplers  that allow disassembly and fits into a case meeting that limit.   S&S Machine sells a case that just gets under the 62" requirement.

An alternative is a Bike Friday or similar small wheel folding bike which can easily fit in a box under that limit.

6
I expect your "downgraded" Deore rear derailleur is a previous generation 9-speed one if it indexes properly.   Shimano 10-speed MTB rear derailleurs don't work with 10-speed road shifters but 9-speed ones do.  Your original equipment changes (10-speed MTB rd and 10-speed road shifters) were automatically incompatible.

Just about any front derailleur will work with barend or downtube shifters since they are all friction. 

And, yes, Deore level components are fine.

7
General Discussion / Re: How to work on your bike?
« on: May 13, 2017, 06:38:22 pm »
Turn it upside down and stand it on the saddle and handle bars.

8
Good luck w your search but if I were you I wouldn't be too reluctant to take the mantel and make it known. Maybe it will inspire someone else to follow in your path.
Great idea.  Make the claim you were the first.  If you are correct, congratulations.  If you weren't the first, you will certainly hear from whoever was.   ;)

9
General Discussion / Re: internal hubs
« on: May 12, 2017, 08:39:23 am »
Probably the only IGH with sufficient gear range, proven durability and the ability to be used with conventional frames is the 14-speed Rohloff. 

It's benefits are 14 evenly spaced gears with a 525% overall range so you can have a gear range of 20 to 105 gear-inches by picking your single chainring and cog properly (there is a torque limit so you can't go crazy low) and it can be used with either a chain or belt drive if the frame is compatible with the belt. The straight chain line means chains wear very well.

It's downsides are cost (>$1000), a weight penalty (~1800 gm complete) and a small efficiency loss (96% to 98% vs a clean chain drive which is about 99%).   Also, the frame should have horizontal dropouts or you will have to use a chain tensioner which is similar to a rear derailleur in appearance.  The shifter is designed for flat bar use but there is an adapter to allow it to be used on drop bars.  Finally, rear wheel removal for fixing a flat is more complex.

10
I'm not sure what type of shifters you are used to but I expect they are STI brifters on your Trek.  I'm also not a fan of barend shifters having had them on a couple of bikes and changed them out after a fair trial.   You have to remove your hands from the hoods to shift and that can be very awkward if you are surprised by a hill or the grade increases suddenly.

Anyway, there is a fairly low cost fix for any bike that has them.  Gevenalle sells brake lever that have brackets that accept either downtube or barend levers and put the shifters right at your finger tips just like brifters.  The levers are available in both short pull (caliper, cantilever and road mechanical disc brakes) or long pull (V-brakes and MTB mechanical discs) format and cost about $150 and will take the levers that comes on the bike. 

11
Gear Talk / Re: Wider tires on same rims
« on: April 28, 2017, 09:06:16 am »
I'm probably going to go with 700C x 35, and the fenders still have a little bit of wiggle room.
You want to maintain that bit of wiggle room.  You want enough clearance between the tire and fender of allow some mud build up or a rock or stick to slip between them without locking up the wheel.

12
Gear Talk / Re: Davidson Titanium Road Bike
« on: April 19, 2017, 09:09:00 am »
I have a ti bike and it is extremely comfortable on a tour.  It has the eyelets to mount a rear rack.  I tow a trailer and prefer it to panniers.
There are indeed Ti bikes suitable for touring but they were purpose built for that use.  In the past Litespeed offered a suitable frame called the "Blue Ridge" but they don't anymore. 

I have a couple of Litespeed Ti road frames but they would be unsuitable as tourers.

13
Sometimes the decision of what is "essential" is difficult, but it's worth the trouble to figure out.
Lights and a mirror definitely fall in the "essential" category even for daily rides.

14
I've tried every type of mirror available and settled on the Third Eye handle bar end mirror (for drop bars) and I have one one every bike I own.  I will not ride without one.  Their only negative is that they don't work if you have barend shifters.

A rear flasher is always a good idea everywhere, all the time. 

15
Gear Talk / Re: 700X40 on LHT?
« on: April 03, 2017, 03:33:01 pm »
Surly says it will.  Here is the tire clearance spec from their web site: 

"700c: 42mm with fenders, 45mm without fenders Individual tire and rim combos affect tire clearance."

Pages: [1] 2 3 ... 108