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Search: Posts Made By: Asi
Showing results 1 to 50 of 584
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Forum: Singlespeed & Fixed Gear
09-05-23, 03:03 PM
Replies: 25
Views: 2,310
Posted By Asi

I ride without any foot retention. But keep in...

I ride without any foot retention. But keep in mind i do this on my own risk.. It's not advisable for most.

I found it to be working without due to the low gear ratio (42tx13t). Easy enough to...
Forum: Bicycle Mechanics
12-06-18, 04:26 AM
Replies: 6
Views: 1,363
Posted By Asi

if it feels crunchy, add a dab of grease on the...

if it feels crunchy, add a dab of grease on the thread. I'd suggest medium strength threadlocker (blue loctite) as it smoothens out the threading action without the fear of loosening that grease...
Forum: Bicycle Mechanics
11-26-18, 04:55 AM
Replies: 42
Views: 53,839
Posted By Asi

Depends on the application. For rust prevention...

Depends on the application. For rust prevention on steel you can galvanize steel (dip the part into molten nickel), or pain it, or powder coat it, or other heavy finish on it. (copper plating, nickel...
Forum: Bicycle Mechanics
11-14-18, 06:14 AM
Replies: 43
Views: 4,471
Posted By Asi

Stayer bike, for motorpaced stayer bikes. Rake is...

Stayer bike, for motorpaced stayer bikes. Rake is backward to get the rider closer to the leading vehicle to improve draft and aerodynamic.

As for improving stability.. yes and no.
A perfectly...
Forum: Bicycle Mechanics
11-09-18, 01:03 AM
Replies: 35
Views: 5,488
Posted By Asi

Hmm.. yes it's just friction between the tapered...

Hmm.. yes it's just friction between the tapered steel bolt and the sleeve (also steel - not enough friction there). Try inserting the concrete anchor less so that you can grip the sleeve on the...
Forum: Bicycle Mechanics
11-08-18, 02:05 AM
Replies: 4
Views: 2,297
Posted By Asi

It's definitely cracked! Seek a CF repair...

It's definitely cracked!

Seek a CF repair shop to salvage that frame.

Diy is possible but you need special materials and confidence in your work. Sanding a wide area around the crack and wrap...
Forum: Bicycle Mechanics
11-08-18, 01:58 AM
Replies: 15
Views: 9,111
Posted By Asi

Low-medium blue threadlocker (Loctite 242 or 243)...

Low-medium blue threadlocker (Loctite 242 or 243) is very good on all mechanical fasteners. I put it everywhere i can. It prevents rust and galvanic corrosion from different metals. It makes the...
Forum: Bicycle Mechanics
11-06-18, 02:30 PM
Replies: 6
Views: 2,647
Posted By Asi

I have Shimano 7410 pedals and they are one of...

I have Shimano 7410 pedals and they are one of the very few shimano road pedals that actually use look delta system (shimano road SPD SL was not introduced at that time so they used the look delta...
Forum: Bicycle Mechanics
11-06-18, 12:50 PM
Replies: 35
Views: 5,488
Posted By Asi

At 12mm is plenty of room. Your best option...

At 12mm is plenty of room.

Your best option (and cheap) is to visit the hardware store for an expanding concrete anchor with the sleeve OD a mm or two smaller. I know some are 8mm sleeve with M6...
Forum: Bicycle Mechanics
11-05-18, 03:26 PM
Replies: 39
Views: 3,491
Posted By Asi

Just a thought.. have you removed the locknut...

Just a thought.. have you removed the locknut first? (the one with splines on the bb face)
I rarely found adjustable cups tight.. they are not under tension once the locknut is out and unscrews by...
Forum: Bicycle Mechanics
11-05-18, 03:12 PM
Replies: 35
Views: 5,488
Posted By Asi

I'd suggest some impact action from an air tool...

I'd suggest some impact action from an air tool (or electric if decent). The impact action will generally loosen nuts even if the bolt is turning. I put shock* absorber nuts with an air tool where...
Forum: Bicycle Mechanics
07-26-18, 05:53 AM
Replies: 6
Views: 7,237
Posted By Asi

The best upgrade for post mount threads on forks...

The best upgrade for post mount threads on forks and frames:

If thread is somewhat functional insert M6 threaded rod/stud with threadlocker (or epoxy if it's more flimsy) and tighten the caliper...
Forum: Bicycle Mechanics
07-24-18, 04:49 AM
Replies: 9
Views: 1,879
Posted By Asi

Using some frame blocks ...

Using some frame blocks (http://www.paragonmachineworks.com/frame-building-parts/frame-building-tools/tube-blocks.html)can make the dent less of a problem - but it will trash the paint in that area....
Forum: Bicycle Mechanics
07-23-18, 03:07 AM
Replies: 23
Views: 2,553
Posted By Asi

Road hub that was converted to track by lathe....

Road hub that was converted to track by lathe. I've cut LH threads on the end of it. - no kludges here.

Cranks are for single speed/track/fixie, Chainring is on the inside of the spider. I can...
Forum: Bicycle Mechanics
07-22-18, 12:45 PM
Replies: 7
Views: 977
Posted By Asi

Or shorten the quill stem (need a precise angled...

Or shorten the quill stem (need a precise angled cut - doable with a miter chop saw and some filing and sanding. Or even a hacksaw and a good way to measure that angle to adjust it by filing) and...
Forum: Bicycle Mechanics
07-22-18, 12:24 PM
Replies: 23
Views: 2,553
Posted By Asi

What would be the purpose for that? Threads must...

What would be the purpose for that? Threads must be both RH to transmit torque from DS to NDS in forward and both LH thread would be used to transmit torque in the other way (from DS to NDS but...
Forum: Bicycle Mechanics
07-22-18, 10:15 AM
Replies: 23
Views: 2,553
Posted By Asi

Well.. this is a project bike. The road...

Well.. this is a project bike. The road everything conversion. So it's a road frame, road bar (flop and chop), road hubs. The only track/fixie specific is the rear cog, chain and crank (1/8 50t...
Forum: Bicycle Mechanics
07-22-18, 06:52 AM
Replies: 12
Views: 4,654
Posted By Asi

From what i can see, your bike has braze-on DT...

From what i can see, your bike has braze-on DT bosses...
Forum: Bicycle Mechanics
07-22-18, 04:49 AM
Replies: 12
Views: 4,654
Posted By Asi

Friction is universal and can shift any number of...

Friction is universal and can shift any number of speeds and any spacing so go with that, you can't miss.

Indexed shifting for 6speed is quite obsolete and as i know only shimano did that. There...
Forum: Bicycle Mechanics
07-22-18, 03:42 AM
Replies: 23
Views: 2,553
Posted By Asi

As I said, axle is bending NDS where the massive...

As I said, axle is bending NDS where the massive spacers are put. Not only the axle is bending, but the NDS spokes are having a near vertical angle, which is bad in terms of lateral stiffness. By...
Forum: Bicycle Mechanics
07-21-18, 02:18 PM
Replies: 5
Views: 565
Posted By Asi

BB has to match threads with the frame (probably...

BB has to match threads with the frame (probably Italian, but do measure. Easy thing is to measure width of the BB shell in the frame. If it reads 70mm and not 68, then is most likely to be Italian...
Forum: Bicycle Mechanics
07-21-18, 01:55 PM
Replies: 5
Views: 914
Posted By Asi

Most probably you did no damage at all. ...

Most probably you did no damage at all.

Check this video on the subject: https://www.youtube.com/watch?v=23bv30TYPSE
Forum: Bicycle Mechanics
07-21-18, 05:15 AM
Replies: 51
Views: 38,902
Posted By Asi

GPS is very good for determining speed. A...

GPS is very good for determining speed. A dedicated unit for such task like V-Box samples speed with 0.01km/h accuracy at 10ms intervals (done by some prediction and integration). Mainly used to...
Forum: Bicycle Mechanics
07-21-18, 04:59 AM
Replies: 23
Views: 2,553
Posted By Asi

Perfect in engineering terms is an approximation...

Perfect in engineering terms is an approximation of way better than needed. Lathe runout at that short piece of a bike hub is minimal and exceeds what typical hubs have out of the factory. For all...
Forum: Bicycle Mechanics
07-20-18, 01:20 PM
Replies: 6
Views: 824
Posted By Asi

I don't see any RD hanger. So it will take some...

I don't see any RD hanger. So it will take some design and fabricate to cobble one. Or a cheap claw RD . Also i'm not sure if you have all the cable stops for a conventional RD.

So short answer....
Forum: Bicycle Mechanics
07-20-18, 10:50 AM
Replies: 12
Views: 3,279
Posted By Asi

Time for a second bike. One for city, one...

Time for a second bike.

One for city, one for race, one for DH, one for trail, one oddity for ****s and giggles, etc.

Roadies use different wheels altogether for training purposes not to damage...
Forum: Bicycle Mechanics
07-20-18, 10:17 AM
Replies: 51
Views: 38,902
Posted By Asi

They have direct implication one over the other....

They have direct implication one over the other. If one is set right then the other will be right. What known distance you have? how do you measure that known distance? Sure the longer the distance...
Forum: Bicycle Mechanics
07-20-18, 08:13 AM
Replies: 23
Views: 2,553
Posted By Asi

Widening a hub

I'd like to widen a rear fixed hub by cutting it in the middle, attach a spacer in the middle and reconnect the two halves back by some method (threading, pressfit, splines, epoxy, welding). The...
Forum: Bicycle Mechanics
07-20-18, 06:55 AM
Replies: 51
Views: 38,902
Posted By Asi

A snippet from my calibration experience of 5th...

A snippet from my calibration experience of 5th wheel speed and distance measuring system (http://www.pegasem.com/english/products_uk/fwl_uk.htm) . Here is a critical application to get the...
Forum: Bicycle Mechanics
07-16-18, 10:30 AM
Replies: 25
Views: 8,623
Posted By Asi

I bet you have the tall spline design used in...

I bet you have the tall spline design used in dura-ace 7800 and ultegra from that era

Shimano Dura-Ace Compatibility (http://www.sheldonbrown.com/dura-ace.html#10)
Forum: Bicycle Mechanics
07-15-18, 07:24 AM
Replies: 21
Views: 6,077
Posted By Asi

Well from the looks of it, tapping to italian...

Well from the looks of it, tapping to italian thread looks to be a suitable solution after-all (apart from finding the right French BB for your cranks).

I've did a sketch and the threads don't...
Forum: Bicycle Mechanics
07-13-18, 05:54 PM
Replies: 21
Views: 6,077
Posted By Asi

NO! Italian thread 36mm x 24tpi (1.05833mm...

NO!
Italian thread 36mm x 24tpi (1.05833mm spacing pitch)
French is 35mm x 1mm spacing pitch.
While they are pretty close it's really not compatible. French thread can (in theory) be rethreaded...
Forum: Bicycle Mechanics
07-12-18, 05:12 AM
Replies: 10
Views: 1,651
Posted By Asi

I have the 1989 8speed DA-7400. Be aware that...

I have the 1989 8speed DA-7400. Be aware that dura-ace from that period is different cable pull ratio, different thread on the last cog (is smaller than standard uniglide. so they could fit 11T .....
Forum: Bicycle Mechanics
07-10-18, 11:30 AM
Replies: 3
Views: 453
Posted By Asi

Oh wow... from the title i was clenching my...

Oh wow... from the title i was clenching my fingers to tell all about gasoline and diesel injectors and variants and how to clean them.

As for those syringes, they are reusable and you can always...
Forum: Bicycle Mechanics
07-10-18, 01:20 AM
Replies: 18
Views: 1,740
Posted By Asi

The spindle in question is in the first links...

The spindle in question is in the first links provided by OP. The one in post #7 (https://www.bikeforums.net/usertag.php?do=list&action=hash&hash=7) is something i found on the net just to...
Forum: Bicycle Mechanics
07-10-18, 01:13 AM
Replies: 12
Views: 1,698
Posted By Asi

Should go pretty easy but make sure you have the...

Should go pretty easy but make sure you have the right taps (one right-hand threaded, the other left-hand threaded), a tap wrench, a vice to hold the cranks and ways to check for alignment and...
Forum: Bicycle Mechanics
07-09-18, 01:22 PM
Replies: 18
Views: 1,740
Posted By Asi

Last picture is not on the race. Take a close...

Last picture is not on the race.
Take a close look on the shiny bands to see where the race is....
Forum: Bicycle Mechanics
07-09-18, 12:36 PM
Replies: 18
Views: 1,740
Posted By Asi

Go with a scotch brite pad (or emery cloth) over...

Go with a scotch brite pad (or emery cloth) over them and some rust remover (or some penetrating oil, even wd-40 will work).
Asses if there are any gouges of any kind on the bearing surface. If not...
Forum: Bicycle Mechanics
07-09-18, 10:41 AM
Replies: 26
Views: 4,315
Posted By Asi

Sorry for my bad English.. not my first language...

Sorry for my bad English.. not my first language and auto-correct corrected to the wrong thing. Nu e nevoie să iei īn derādere pe cineva care vorbește o a doua limbă deoarece oricānd te poate lua...
Forum: Bicycle Mechanics
07-09-18, 08:03 AM
Replies: 26
Views: 4,315
Posted By Asi

Engineer coming trough. For breaking there are...

Engineer coming trough.
For breaking there are several design factors to consider:
Mass, cooling surface, brake area, lateral stiffness, pad material.

1. Mass - more mass -> better at storing...
Forum: Bicycle Mechanics
06-30-18, 08:23 AM
Replies: 29
Views: 2,668
Posted By Asi

Put the pedal axle in the vice and hammer the end...

Put the pedal axle in the vice and hammer the end of the crank to loosen (put a block of wood not to mar and deform the crank where you strike with the hammer)

Drilling is possible but pedal axles...
Forum: Bicycle Mechanics
06-26-18, 01:13 AM
Replies: 26
Views: 4,749
Posted By Asi

The difference is too small in the number of...

The difference is too small in the number of balls. More balls add more rolling resistance but it eliminates the cage friction. In this case the 9ball caged version have less resistance than 11balls...
Forum: Bicycle Mechanics
06-25-18, 05:09 PM
Replies: 26
Views: 4,749
Posted By Asi

Engineer coming trough: Loose balls are...

Engineer coming trough:

Loose balls are better at taking load because of more contact area.
Roll better (cages can interfere with the smooth roll of the ball due to the friction with the cage...
Forum: Bicycle Mechanics
06-25-18, 02:22 PM
Replies: 27
Views: 14,042
Posted By Asi

I'd go with no tubing but solid smooth steel...

I'd go with no tubing but solid smooth steel rebar (6mm should be enough.. even 4mm for light duty). Pretty cheap and if you got a vice and some vicegrips or even better an iron bending wrench (like...
Forum: Bicycle Mechanics
06-20-18, 02:25 PM
Replies: 10
Views: 5,374
Posted By Asi

Nice that you got it figure out. A multi-meter...

Nice that you got it figure out. A multi-meter would have cleared that out sooner, but it's good that you finally got it.
That battery then was shorting out or something.. weird buzzing
Usually a...
Forum: Bicycle Mechanics
06-18-18, 11:24 PM
Replies: 9
Views: 4,045
Posted By Asi

Have you tried replacing the cables and hosing?...

Have you tried replacing the cables and hosing? usually those can cause drag and feel the brake is lees efficient and harder to operate.
Forum: Bicycle Mechanics
06-18-18, 05:42 PM
Replies: 3
Views: 505
Posted By Asi

Is the tube seated correctly near the valve into...

Is the tube seated correctly near the valve into the tyre?
Forum: Bicycle Mechanics
06-18-18, 03:03 PM
Replies: 25
Views: 4,487
Posted By Asi

Well there are at leas two desired things: No...

Well there are at leas two desired things:
No rub on the rotors while freespin
Same force either side without pushing the rotor axially (it can warp and twist rotors and all sorts of nasty stuff)...
Forum: Bicycle Mechanics
06-18-18, 02:49 PM
Replies: 10
Views: 5,374
Posted By Asi

sorry dsbratjr but checking fuses is pointless...

sorry dsbratjr but checking fuses is pointless here because fuses are on the positive side.

Follow the sound under the fairing there should be the issue with a ground loose. Also check the...
Forum: Bicycle Mechanics
06-18-18, 01:55 PM
Replies: 10
Views: 5,374
Posted By Asi

You got the wrong bike forum. But anyway i...

You got the wrong bike forum.

But anyway i suspect you have a ground issue.
Wipe the battery terminals with some sandpaper to clean them and inside the positive and negative clamps. (this will...
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