Full Version: What Exactly Is A Mongoose M1?
I recently picked up an 85' Mongoose M1. Problem is, I remember the Experts and the Californians...but can't recall there ever being an M1. Anyone have any information on where the M1 fit into the Mongoose family of bikes? It's not a mini either.
The M1 came out in `85 as the entry level bike, taking the place of the Expert, which had slowly received better standard parts over the years. Frame geometry was the same as Expert's & Californian's, but the M1 was trimoly as apposed to the full chromo Expert's & Californian's. If yours is an `85, Bill has some sweet Mongoose authorized replacement decal sets for it.
Thanks Motor City. That was just what I wanted to know. I suspected that it was very much like the Expert...because 2nd set of numbers on the serial started with an 'E'
Bill...if you spot this. I'd definitely be interested in discussing the replacement decals.
Bill...if you spot this. I'd definitely be interested in discussing the replacement decals.
according to circa 1985 BMXAs, the expert was tri-moly by then. pretty sure the M1 was all steel, since it was the coasterbrake/steel rims $140 bike.
Some may argue that this is a Mongoose M1, but I'm sure it's a different M1 than what you're thinking.
Hmmm...
Coaster brake and a rear caliper? I'll have to check my `85 catalog tonight when I get home. And the bike has an `84 style head tube sticker instead of the `85 style badge. Must have been a late `84/early `85 publicity photo.
Coaster brake and a rear caliper? I'll have to check my `85 catalog tonight when I get home. And the bike has an `84 style head tube sticker instead of the `85 style badge. Must have been a late `84/early `85 publicity photo.
QUOTE (mr coasterbrake @ Jan 2 2008, 03:12 PM) 
according to circa 1985 BMXAs, the expert was tri-moly by then. pretty sure the M1 was all steel, since it was the coasterbrake/steel rims $140 bike.
I have an 85 Expert and it has CRO-MO main tubes. The rear tri angle is tri moly.
"tri-moly" isn't a metal. it refers to the 3 (tri) main tubes being CRMO. the rest is steel.
cromo is steel also
(sorry the ninjamonkeys made me say that)
(sorry the ninjamonkeys made me say that)
yes, yes it is 
QUOTE (Motor City Mongoose @ Jan 2 2008, 01:39 PM)
The M1 came out in `85 as the entry level bike, taking the place of the Expert, which had slowly received better standard parts over the years. Frame geometry was the same as Expert's & Californian's, but the M1 was trimoly as apposed to the full chromo Expert's & Californian's. If yours is an `85, Bill has some sweet Mongoose authorized replacement decal sets for it.
I just pick up an 85 at a garage sale for $15.
Did these ever come in purple or did someone paint this one?
thanks
To reiterate
Tri-moly is a marketing term. Same as triple chrome.
Tri-moly mean that the top tube, downtube and seat mast are 4130 chrome-molybdenum alloy steel. The rest of the frame is mild steel.
QUOTE
the expert was tri-moly by then
Tri-moly is a marketing term. Same as triple chrome.
Tri-moly mean that the top tube, downtube and seat mast are 4130 chrome-molybdenum alloy steel. The rest of the frame is mild steel.
QUOTE
Chromoly is an abbreviation for "chromium-molybdenum steel" (sometimes spelled "cro-mo"). Chromoly is a range of low alloy steels used, for example, to produce tubing for bicycle frames and race-car roll cages. It is not as lightweight as aluminum alloys, but has the advantages of high tensile strength and malleability. It is also easily welded and is considerably stronger and more durable than standard 1020 steel tubing.
One of the most common chromoly steels is 4130 steel, composed of 0.28 to 0.33% carbon, 0.4 to 0.6% manganese, 0.8 to 1.1% chromium, 0.15 to 0.25% molybdenum, 0.04% phosphorus, 0.04% sulfur, and 0.2 to 0.35% silicon, in addition to iron.
Although chromoly contains chromium, it does not have the corrosion resistance of stainless steel.
Chromoly is the best material used to make BMX bicycle frames due to its high tensile strength and high weight to strength ratio. 4140 is a little bit more durable and used to make mostly BMX pegs for grinds.
One of the most common chromoly steels is 4130 steel, composed of 0.28 to 0.33% carbon, 0.4 to 0.6% manganese, 0.8 to 1.1% chromium, 0.15 to 0.25% molybdenum, 0.04% phosphorus, 0.04% sulfur, and 0.2 to 0.35% silicon, in addition to iron.
Although chromoly contains chromium, it does not have the corrosion resistance of stainless steel.
Chromoly is the best material used to make BMX bicycle frames due to its high tensile strength and high weight to strength ratio. 4140 is a little bit more durable and used to make mostly BMX pegs for grinds.
QUOTE
Chromoly is the best material used to make BMX bicycle frames due to its high tensile strength and high weight to strength ratio.
Wonder why they didn't make Festivus poles out of THAT?
i have steel M1 rims if anyone is interested. they need to be rechromed. they have blue/red rim strips. no coaster brake. they have a freewheel.
make offer + shipping
make offer + shipping
QUOTE (xtianwilliams @ Jan 2 2008, 02:12 PM)
I recently picked up an 85' Mongoose M1. Problem is, I remember the Experts and the Californians...but can't recall there ever being an M1. Anyone have any information on where the M1 fit into the Mongoose family of bikes? It's not a mini either.
My guess is that the M-1 is the same f/f as the expert/californian. Only the M-1 was sold as an affordable, probably the cheapest model... with pro steel rims, plastic pedals and other cheaper, heavier parts. I don't see them around the museum at all. I like it in white.
californian and experts were tri-moly in 83 --- went full chromo in 84 ---- then back to tri-moly in 85
the M1 came out and phased the expert out
the M1 came out and phased the expert out
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