Dismantling Front Master Cylinder

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daveforty said:
Bumm mirrors. ideal for a rear view.


(I also have them on my bike, and I also re-cut the threads to suit. But I did space the LH mirror upwards with a nyloc nut so that it was more 'level' with the RH mirror sitting on the boss on the master cylinder)
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I have the AN/Grimeca 13mm master cylinder set up, and more by luck than design both mirrors sit level with each other..
 
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Mart UK said:
I don't have enough bar, before it curves. I must have the narrowest bars. I think the previous owner tried it, because the switch housing had a crack around the underside bolt hole. I may change the bars, in time.
Click to expand...
Change the clutch fulcrum, they moved it inwards sometime in 73/74 on the switch mounting. Old one is unpainted, later one in black and available from RGM. You switch stays in the same place so you do not need finger extensions ;) . Makes for a lighter clutch pull too.

Dismantling Front Master Cylinder
 
Dan1950 said:
While these aren't strictly traditional in the original OEM mirrors sense, they are more period correct than bar end mirrors. IMO
Dismantling Front Master Cylinder


I already have one mounted on the clutch lever and it allows a good view to the rear.
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Are they CONVEX? (just trying to help you stay alive Brother:cool:) Who supplied them?
 
concours said:
Are they CONVEX? (just trying to help you stay alive Brother:cool:) Who supplied them?
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No they are not convex. I never had convex mirrors on a motorcycle and didn't feel like I needed them. I ran one on the left side and it seemed like it offered a good rear view.
 
Dan1950 said:
No they are not convex. I never had convex mirrors on a motorcycle and didn't feel like I needed them. I ran one on the left side and it seemed like it offered a good rear view.
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I don't mean to call you out Dan, but bike mirrors not as convex as say, a truck spot mirror, but most OEM mirrors were SLIGHTLY convex to increase the field of vision. Most of the "EMGO" level stuff is flat mirror.
Other topics, I let the rope go slack way earlier than this, but for safety, I go the extra mile in the hopes it may save someone from (in this case) missing a vehicle in the blindspot,:eek: and they have the tools to save their own bacon.
All the best regards. :cool:
 
(This is for ALL riders to consider) The difference is, (and I see other vintage riders do it all the time) while a rider is busy shifting the upper body left & right to increase the field of vision, (arthritic old necks, mine included) taking seconds, not milliseconds, there is a chance something in front of the rider may change very drastically, also the side/rear situation is evolving. The ability to simply GLANCE at TWO convex mirrors and get a BIG picture of your side/rear view is a huge safety issue. (and YES, I still, as a last redundant check over my shoulder as I begin my lane change, to rule out a miss)
The take away is, skimp $$ on a paint job, chrome, stainless steel widget fasteners, but please, buy GOOD mirrors.
Yes, I'm a safety nerd. I'll take it.
 
Dan1950 said:
.... they are more period correct than bar end mirrors. IMO
Click to expand...
Dan, it may be a British thing, but bar ends have been around forever and would have been a period mod. They're still made with the original tooling from the '50s.

I agree with @concours, regarding safety. When I 1st saw my bike, I did think I would change out the bar end mirrors, but the view is excellent, so I plan to keep them.
 
concours said:
I don't mean to call you out Dan, but bike mirrors not as convex as say, a truck spot mirror, but most OEM mirrors were SLIGHTLY convex to increase the field of vision. Most of the "EMGO" level stuff is flat mirror.
Other topics, I let the rope go slack way earlier than this, but for safety, I go the extra mile in the hopes it may save someone from (in this case) missing a vehicle in the blindspot,:eek: and they have the tools to save their own bacon.
All the best regards. :cool:
Click to expand...
I just checked the lens in the mirrors and they are convex (concave actually). There's about 3/32" (2.5mm) gap in the center of the contour gauge I used to determine the curvature.

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Chrome 10MM Rearview Side Mirrors For Harley Kawasaki Suzuki Honda Motorcycle US | eBay

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concours said:
(This is for ALL riders to consider) The difference is, (and I see other vintage riders do it all the time) while a rider is busy shifting the upper body left & right to increase the field of vision, (arthritic old necks, mine included) taking seconds, not milliseconds, there is a chance something in front of the rider may change very drastically, also the side/rear situation is evolving. The ability to simply GLANCE at TWO convex mirrors and get a BIG picture of your side/rear view is a huge safety issue. (and YES, I still, as a last redundant check over my shoulder as I begin my lane change, to rule out a miss)
The take away is, skimp $$ on a paint job, chrome, stainless steel widget fasteners, but please, buy GOOD mirrors.
Yes, I'm a safety nerd. I'll take it.
Click to expand...
Interesting. I've never cared about mirrors on bikes (probably form starting out riding old Triumphs in my teens where the vibration stops you from seeing anything anyway). I've always looked back thinking I was seeing my surroundings better. I still do, but I didn't think about the arthritis in my neck and back making that happen much slower than it used to. So, I guess it's time to install two good mirrors and start using them!
 
Good mirrors are essential or they’re not worth having. I was coming home from Donington Park one day on my Trident, making good progress down the M5 at about 105 on the clock. I only noticed the blue lights when he drew alongside me :( The only good side of it was after accepting my bollocking he only invited me to accept 3 points and a £60 fine.
 
marshg246 said:
Interesting. I've never cared about mirrors on bikes (probably form starting out riding old Triumphs in my teens where the vibration stops you from seeing anything anyway).
Click to expand...
Been there, done that. Now that I can see a clear image in my mirrors they become more relevant.
 
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