Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-06-14, 08:44 PM   #4576
OPAbiker
Newbie
 
Join Date: Aug 2013
Location: Pacific Northwest
Bikes:
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Resurrected Bridgestone 1993 MB-1. My current urban street bike. Frame stripped with a grey repaint. NOS Shimano Deore XT drivetrain with M730 crank and XTR rings. Deore XT shifters and brakes, XTR pedals, Brooks saddle, Thomson seat post, Ritchey bar and stem. Velocity rims with Continental Sport Contact tires, XT hubs. Shark fin chain guard. Acorn seat bag and handlebar tool bag. While mostly original, I wasn't looking to make an authentic restoration but a build on a quality vintage MTB frame with a few upgrades to suit me.
Attached Images
File Type: jpg IMG_2325.JPG (80.0 KB, 436 views)
File Type: jpg IMG_2326.JPG (71.0 KB, 427 views)
File Type: jpg IMG_2328.JPG (69.3 KB, 429 views)
File Type: jpg IMG_2329.JPG (80.5 KB, 428 views)
OPAbiker is offline   Reply With Quote
Old 07-06-14, 09:10 PM   #4577
WNG
Spin Forest! Spin!
 
WNG's Avatar
 
Join Date: Sep 2007
Location: Arrid Zone-a
Bikes: I used to have many. And I Will again.
Posts: 5,967
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
@jbchybridrider Excellent photo of your Peugeot. I never get tired of seeing it, gorgeous paint and set up.
WNG is offline   Reply With Quote
Old 07-06-14, 10:50 PM   #4578
rjhammett
Senior Member
 
rjhammett's Avatar
 
Join Date: Dec 2011
Location: Saint Paul, Minnesota
Bikes: 92 Colnago Master PIU, 85 Fuso, 92 Bridgestone RB-1, 87 Centurion Ironman, 83 Pinarello Record, 92 Tommaso, 92 Merckx MX Leader, 90 Serotta Colorado II, 99 Tommasini Sintesi, 90 Pinarello Montello, 89 Tommasini Super Prestige, 08 Look 585, Unknown
Posts: 1,392
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Found this at a garage sale this weekend. It is a '92 (I think) Bianchi Peregrine. It is too small so it is listed on CL.

Attached Images
File Type: jpg IMG_0742.jpg (94.4 KB, 424 views)
File Type: jpg IMG_0743.jpg (94.8 KB, 425 views)
rjhammett is offline   Reply With Quote
Old 07-07-14, 12:10 AM   #4579
Velocivixen 
Senior Member
 
Velocivixen's Avatar
 
Join Date: Oct 2013
Location: The Great Pacific Northwest
Bikes: 1978 Univega Gran Rally, 2015 Surly Straggler, 1985 Nishiki Riviera mixte, 1987 Miyata One Twelve mixte, '71 Raleigh Twenty, 1995 Trek 820
Posts: 3,774
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
I'm going to repost my 1985 Sekai Bigfoot solely because I changed out the tires on it from 1.95's to 2.2's at 40 psi AND changed the handlebars to Soma Oxford bars (Albatross knock offs). Still have the Dia-Compe motorcycle brake levers but changed the Suntour plain friction thumb shifters to the Suntour XC Sport "Power Ratchet" shifters. I only had red cable housing on hand and since this setup is an experiment, it's what I used.
Wheel base is approx. 41.5" & chain stays are approx 18.5", seat tube angle is 69 degrees & head tube is approx 70 degrees.

Attached Images
File Type: jpg image.jpg (102.3 KB, 58 views)
File Type: jpg image.jpg (102.0 KB, 55 views)
File Type: jpg image.jpg (96.1 KB, 47 views)
File Type: jpg image.jpg (95.1 KB, 40 views)
Velocivixen is offline   Reply With Quote
Old 07-07-14, 11:06 AM   #4580
badger_biker 
Senior Member
 
badger_biker's Avatar
 
Join Date: Jan 2004
Location: Rural Western Wisconsin
Bikes: 9 vintage touring machines and a 1975 Motobecane Le Champion
Posts: 1,198
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
[QUOTE=OPAbiker;16914371]Resurrected Bridgestone 1993 MB-1. My current urban street bike. Frame stripped with a grey repaint. NOS Shimano Deore XT drivetrain with M730 crank and XTR rings. Deore XT shifters and brakes, XTR pedals, Brooks saddle, Thomson seat post, Ritchey bar and stem. Velocity rims with Continental Sport Contact tires, XT hubs. Shark fin chain guard. Acorn seat bag and handlebar tool bag. While mostly original, I wasn't looking to make an authentic restoration but a build on a quality vintage MTB frame with a few upgrades to suit me/QUOTE]

Nicely done! I really like the year and model on the TT.
__________________
Nothing compares to the simple pleasure of a bike ride - JFK
badger_biker is offline   Reply With Quote
Old 07-07-14, 11:13 AM   #4581
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Rock Springs, WY
Bikes: My War
Posts: 26,863
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 304 Post(s)
Quote:
Originally Posted by Velocivixen View Post
I'm going to repost my 1985 Sekai Bigfoot solely because I changed out the tires on it from 1.95's to 2.2's at 40 psi AND changed the handlebars to Soma Oxford bars (Albatross knock offs). Still have the Dia-Compe motorcycle brake levers but changed the Suntour plain friction thumb shifters to the Suntour XC Sport "Power Ratchet" shifters. I only had red cable housing on hand and since this setup is an experiment, it's what I used.
Wheel base is approx. 41.5" & chain stays are approx 18.5", seat tube angle is 69 degrees & head tube is approx 70 degrees.

The red housing works GREAT with that pewter paint job!

4" from back of seat tube to front of tire - definitely a limousine!
LesterOfPuppets is offline   Reply With Quote
Old 07-07-14, 01:14 PM   #4582
Velocivixen 
Senior Member
 
Velocivixen's Avatar
 
Join Date: Oct 2013
Location: The Great Pacific Northwest
Bikes: 1978 Univega Gran Rally, 2015 Surly Straggler, 1985 Nishiki Riviera mixte, 1987 Miyata One Twelve mixte, '71 Raleigh Twenty, 1995 Trek 820
Posts: 3,774
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
@LesterOfPuppets- Thanks neighbor! The red are two different types though - 1 is from my 1987 Miyata & is more ruby or blue red & (the clear kind where you see the spiral metal) & the other is leftover JagWire red, more orange-y red. If I like the red look I'll get some more of the old fashioned kind from an online place.

I really debate about getting this thing powder coated. I went to a place to look at color chips & just not sure.

Lester, you going on the C & V ride?
Velocivixen is offline   Reply With Quote
Old 07-07-14, 03:56 PM   #4583
neo_pop_71
Senior Member
 
neo_pop_71's Avatar
 
Join Date: Jan 2009
Location: SoCal
Bikes:
Posts: 829
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I love the Ritchey "Bi-plane" crown fork... that fork makes the 1992 and 1993 MB-1 really stand out!



I love the gray, it reminds me of my 1991 Stumpjumper Comp that came stock in matte gray and full bombproof XT 7 speed!



Thanks for sharing!
Attached Images
File Type: jpg IMG_2329.JPG (80.5 KB, 27 views)
File Type: jpg 91StumpCompPROFILE.jpg (76.0 KB, 35 views)
neo_pop_71 is offline   Reply With Quote
Old 07-07-14, 10:48 PM   #4584
truckface 
Senior Member
 
truckface's Avatar
 
Join Date: Oct 2011
Location: Brooklyn, NY
Bikes: '77 U08, '80 Bob Jackson tourer, '82 Stumpjumper, '84 Trek 720
Posts: 105
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My newly acquired and overhauled '82 Stumpjumper. So much fun to ride.

Everything but the saddle and rear wheel are original, as far as I can tell. It even came with the original tires, which had plenty of tread left, but the sidewalls were dry rotted.

I ended up using moped clutch cables and housing for the brakes, since the Tomaselli levers take those large hammerhead ends they don't make for bikes anymore.

The paint has a fair amount of small chips, and the entire frame appears to be chromed underneath. Didn't expect that.










truckface is offline   Reply With Quote
Old 07-07-14, 10:55 PM   #4585
Velocivixen 
Senior Member
 
Velocivixen's Avatar
 
Join Date: Oct 2013
Location: The Great Pacific Northwest
Bikes: 1978 Univega Gran Rally, 2015 Surly Straggler, 1985 Nishiki Riviera mixte, 1987 Miyata One Twelve mixte, '71 Raleigh Twenty, 1995 Trek 820
Posts: 3,774
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
@truckface - wow, that bike is gorgeous! How's it ride? Is that crankset TA Cyclotourist? I understand that company's used touring components on early mountain bikes. I love that crankset.
Velocivixen is offline   Reply With Quote
Old 07-08-14, 12:06 AM   #4586
ZeRinger
Panasonic Nut
 
ZeRinger's Avatar
 
Join Date: Aug 2000
Location: Plymouth, MN
Bikes: 2000 Pinarello Paris | Panasonics: '88 DX-5000 / '88 DX-4000 / '88 MC-5500 (sold) / '86 Team America / '86 Team Japan (2) / '85 Team / '84 DX-4000 (sold) / '91 PR-6000 / '89 PICS Team Custom / '83 AR-6000 Aero / '89 DX-1000 / '89 Team MC Custom (sold
Posts: 609
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
1988 Panasonic MC-7500. Tange MTB Prestige Tubing with Deore XT. I've wanted one since '88 and found one on Craigslist just five miles from my house. Lucky.










Attached Images
File Type: jpg 88PanaMC7500.jpg (101.2 KB, 25 views)

Last edited by ZeRinger; 07-09-14 at 06:26 PM. Reason: New photos
ZeRinger is offline   Reply With Quote
Old 07-08-14, 12:30 AM   #4587
truckface 
Senior Member
 
truckface's Avatar
 
Join Date: Oct 2011
Location: Brooklyn, NY
Bikes: '77 U08, '80 Bob Jackson tourer, '82 Stumpjumper, '84 Trek 720
Posts: 105
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Velocivixen View Post
How's it ride? Is that crankset TA Cyclotourist? I understand that company's used touring components on early mountain bikes. I love that crankset.
Thanks, @Velocivixen! This is actually my first ever MTB, so I'm not sure how it compares to other MTBs, but it rides a lot like a laid back tourer that's especially nimble. The ride's cushier than I expected with the 1.75" tires, and their lighter weight probably contributes to its zippyness. So far I've only ridden it on the streets of Brooklyn, but it's been eating up potholes and shaking off railroad crossings with ease. Looking forward to getting it on some dirt and gravel soon.

And yep, that's a Cyclotouriste crankset. Specialized seems to have had a lot of fun sourcing the stoutest components they could find for these first-year Stumpies. In addition to the TA cranks, they came stock with MAFAC tandem cantilevers, Tomaselli motorcycle levers, Suntour BMX pedals, custom Nitto stems/bars, Suzue this, Araya that, some Tange over there and an Avocet on top.

It feels a bit like uncovering a time capsule someone buried to remind the future of all the companies from around the world who were just killing it back then.
truckface is offline   Reply With Quote
Old 07-08-14, 12:39 AM   #4588
Velocivixen 
Senior Member
 
Velocivixen's Avatar
 
Join Date: Oct 2013
Location: The Great Pacific Northwest
Bikes: 1978 Univega Gran Rally, 2015 Surly Straggler, 1985 Nishiki Riviera mixte, 1987 Miyata One Twelve mixte, '71 Raleigh Twenty, 1995 Trek 820
Posts: 3,774
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
@truckface - I think it's cool that there are so many famous brands all on one bike! Feel free to post more photos, esp. Close ups. I can imagine your ride is smooth.
Velocivixen is offline   Reply With Quote
Old 07-08-14, 01:40 AM   #4589
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Rock Springs, WY
Bikes: My War
Posts: 26,863
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 304 Post(s)
Quote:
Originally Posted by Velocivixen View Post
@LesterOfPuppets- Thanks neighbor! The red are two different types though - 1 is from my 1987 Miyata & is more ruby or blue red & (the clear kind where you see the spiral metal) & the other is leftover JagWire red, more orange-y red. If I like the red look I'll get some more of the old fashioned kind from an online place.

I really debate about getting this thing powder coated. I went to a place to look at color chips & just not sure.

Lester, you going on the C & V ride?
Oh, dunno. Hadn't heard about it. I remember hearing about a Seattle one but I thought it had passed already...
LesterOfPuppets is offline   Reply With Quote
Old 07-08-14, 07:09 AM   #4590
corwin1968
Senior Member
 
corwin1968's Avatar
 
Join Date: Aug 2011
Bikes:
Posts: 1,281
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Quote:
Originally Posted by truckface View Post
My newly acquired and overhauled '82 Stumpjumper. So much fun to ride.

Everything but the saddle and rear wheel are original, as far as I can tell. It even came with the original tires, which had plenty of tread left, but the sidewalls were dry rotted.

I ended up using moped clutch cables and housing for the brakes, since the Tomaselli levers take those large hammerhead ends they don't make for bikes anymore.

The paint has a fair amount of small chips, and the entire frame appears to be chromed underneath. Didn't expect that.











Very nice bike and I especially like those handlebars! Just the right amount of pullback and WIDE!
corwin1968 is offline   Reply With Quote
Old 07-08-14, 08:18 AM   #4591
Velocivixen 
Senior Member
 
Velocivixen's Avatar
 
Join Date: Oct 2013
Location: The Great Pacific Northwest
Bikes: 1978 Univega Gran Rally, 2015 Surly Straggler, 1985 Nishiki Riviera mixte, 1987 Miyata One Twelve mixte, '71 Raleigh Twenty, 1995 Trek 820
Posts: 3,774
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
@LesterOfPuppets- C & V ride is July, 26, at 10:00 a.m beginning at Velo Cult Bike Shop, 1969 NE 42nd in Portland. JYL is organizing & he posted about a 10? Mile really nice route. Hope you'll be there. Nice to put names & faces together.
Velocivixen is offline   Reply With Quote
Old 07-08-14, 08:35 AM   #4592
truckface 
Senior Member
 
truckface's Avatar
 
Join Date: Oct 2011
Location: Brooklyn, NY
Bikes: '77 U08, '80 Bob Jackson tourer, '82 Stumpjumper, '84 Trek 720
Posts: 105
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by corwin1968 View Post
Very nice bike and I especially like those handlebars! Just the right amount of pullback and WIDE!
Hey thanks! Though true credit should go to Sinyard and Neenan, I suppose.

I've never ridden bars like these, but they are pretty enjoyable. The original grips tore when I pulled them off, so I tried to recreate their look using cloth tape and keeping the trademark red end caps. My plan is to eventually make this my every-day super commuter, so it might end up with drop bars or something else a bit narrower. Figured I should give it some riding time in its (nearly) original state before messing with it too much.
truckface is offline   Reply With Quote
Old 07-09-14, 06:47 AM   #4593
Bicycle Addict
Senior Member
 
Bicycle Addict's Avatar
 
Join Date: Sep 2012
Location: NEW ZEALAND
Bikes: Marin Bolinas ridge, Carlton Corsa 5, Falcon Olympic 12, 98 Shesh Rockhopper,
Posts: 615
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Hey guys thought I would chime in from NZ.
Horizon MTB that I know nothing about . . . it came up on a auction site and I bought it.
Does anyone know anything more? I realize its a stab in the dark.

Bars and stem are not original it had tallish risers on it, had some vintage bars knocking about so on they went.
Attached Images
File Type: jpg new 002.jpg (103.6 KB, 34 views)
Bicycle Addict is offline   Reply With Quote
Old 07-09-14, 09:02 AM   #4594
Henry III 
is just a real cool dude
 
Henry III's Avatar
 
Join Date: Aug 2010
Location: The Thumb, MI
Bikes:
Posts: 3,093
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Out of my six steeds this gets the most use. 1986 Fisher Montare. Picked this up as just a frame and fork...no bottom bracket for $5. Luckily we have a fellow in town that's a vintage mtb guy and had a spindle for it and brand new bearings that he just gave to me. Because finding those two things can make or break a project like this very quickly. Tried it keep it relatively period correct and comfy at the same time. The B67 saddle and ESI super chunky grips are a godsend. Im looking to pick up some barend just to make it a little more comfy. The drivetrain is a little offbeat but I don't like triples and this works perfect for me...2x7 with a Suntour GPX FD, XT thumbies. I've got the original fork but tossed on this unknown fork that came off a 88 MB1. Though it's not original to the MB1 so I have no clue and it doesn't look like a factory made fork. I swapped it in hopes to make the steering a little less floppy but no luck but I've grown used to it now.


Sorry for the grainy picture as I was just outside and my old Iphone isn't the best at photos.


[/URL]
Henry III is offline   Reply With Quote
Old 07-09-14, 11:30 AM   #4595
FLJeepGuy
Senior Member
 
FLJeepGuy's Avatar
 
Join Date: Mar 2014
Location: Jacksonville, FL
Bikes: 2014 Specialized Crosstrail Disc, 1995 Specialized HardRock Ultra, 1986 Centurion LeMans RS, 1991 Trek 1200, late 80's Tunturi 500R, plus various others moving through my garage...
Posts: 227
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I've got a pair of Specialized HardRocks, both in excellent condition with only the tires and tubes being new.

First up is a '95 Ultra in their "Black Cherry" finish with (as far as I can tell) a full Shimano Alivio group set.



The second is a '97 GX Sport.



I do however need to take some better photos as I managed to cut the handlebars off both pictures.
Attached Images
File Type: jpg WP_20140705_11_39_31_Pro.jpg (103.3 KB, 27 views)
File Type: jpg WP_20140705_11_36_06_Pro.jpg (101.9 KB, 24 views)
FLJeepGuy is offline   Reply With Quote
Old 07-09-14, 11:38 AM   #4596
TireLever-07
Senior Member
 
Join Date: Sep 2005
Location: Malden, MA.
Bikes: 1994 Schwinn Passage, 2010 Masi, 2014 Specialized Crossroads
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Nice Stumpjumper Truckface. I'd be careful of parked car's mirrors with those wide handlebars. The motor cross style brake levers go back the early Marin County Klunker builders. So early MTB builders used them too. chris
TireLever-07 is offline   Reply With Quote
Old 07-10-14, 11:07 AM   #4597
truckface 
Senior Member
 
truckface's Avatar
 
Join Date: Oct 2011
Location: Brooklyn, NY
Bikes: '77 U08, '80 Bob Jackson tourer, '82 Stumpjumper, '84 Trek 720
Posts: 105
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by TireLever-07 View Post
Nice Stumpjumper Truckface. I'd be careful of parked car's mirrors with those wide handlebars.
Ha. Yeah, I definitely need to be more aware. Actually clipped a mirror slightly this morning, but the car was parked in the bike lane so I figured it deserved it.
truckface is offline   Reply With Quote
Old 07-10-14, 07:05 PM   #4598
Sixty Fiver
Bicycle Repair Man !!!
 
Sixty Fiver's Avatar
 
Join Date: Sep 2007
Location: YEG
Bikes: See my sig...
Posts: 27,264
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
One of my partners at Dynamic Composites built this in '99 for Rocky Mountain... he said that they cracked one frame during extreme downhill tests but broke 10 aluminium frames.





Full suspension design went in a different direction and the the cost to produce the carbon fibre main frame was twice that of aluminium, that and it was getting built on this side of the pond makes this a one of a kind bike although 10 carbon frames were produced and 9 are in storage.
Sixty Fiver is offline   Reply With Quote
Old 07-10-14, 09:00 PM   #4599
Flying Merkel
Senior Member
 
Flying Merkel's Avatar
 
Join Date: Mar 2008
Location: Costa Mesa CA
Bikes:
Posts: 2,639
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Found on Craigslist for $100 as an incomplete project. Guy ran out of money and had stuck assorted incompatible junk parts to try & complete it. New FD, BB, crankset, seatpost & cables and an old wheelset later and I have a surprisingly decent off road bike.

Behold the 1998 FSR Extreme:

[IMG][/IMG]

In 1998, everything was EXTREME!
Flying Merkel is offline   Reply With Quote
Old 07-11-14, 12:09 PM   #4600
neo_pop_71
Senior Member
 
neo_pop_71's Avatar
 
Join Date: Jan 2009
Location: SoCal
Bikes:
Posts: 829
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Flying Merkel View Post
Found on Craigslist for $100 as an incomplete project. Guy ran out of money and had stuck assorted incompatible junk parts to try & complete it. New FD, BB, crankset, seatpost & cables and an old wheelset later and I have a surprisingly decent off road bike.

Behold the 1998 FSR Extreme:

[IMG][/IMG]

In 1998, everything was EXTREME!
Nice score Flying Merkel!

My brother bought that identical bike from SuperGo (back before Performance bought them out and killed it), it was one of their big holiday weekend sales. It was marked down to $999.99, saved $700.00 and the sales guy tossed in a frame pump, saddle bag, and a couple spare tubes. My brother rode it hard and it wasn't long before the dual crown Judy fork took a dump. He replaced it with a White Brother fork and it's been solid ever since.

Here are the original specs if you want to compare or locate components:

1998 Specialized Gound Control FSR Extreme - BikePedia

I see you're in C.M., I live in Brea, did you ride the river trail to the beach? The photo looks like the fine sands that Newport or H.B., hard to beat the O.C. coast for mid-ride place to chill.
neo_pop_71 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 08:13 AM.