Yamaha Motobike


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crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#21
Joining to bump this old thread again! I saw a bike in a mall circa 1974 called the Greco MC 1000 somewhere in new Mexico on a family vactaion. It was similar. Then, the following spring when in a local Minnesota Yamaha dealer with a Jr high friend getting a part for his mini bike I saw her for the first time.... <angels singing> Yamaha Moto Bike<angels singing>. I begged my parents to buy it for my June birthday. My father insisted I had to save my money. I mowed lawns for two months, pretty sure now that my parents paid neighbors to pay me to cut/scalp their beautiful lawns hahaha. I was the first kid on the block to get a Yamaha Moto Bike. It was the mid year with the banana seat, first thing to go after the front fender. Several of my other friends got them that summer. I think they went for about $179, a LOT for a BMX bike.

The Greco MX 1000 is what I thought of when I saw the OP, but that was grey and also had a fake gas tank.

The second friend to get the Moto Bike had a dad who was a pipe fitter working on the Alaska pipeline, pretty good welder. That was a good thing because the beating we gave those bikes took a toll, and revealed some design flaws. Three of us all had breaks between the down tube and head.. one a total failure collapse mid track. He rolled it home in tears and his father returned it to the Yamaha dealer for a replacement.. which also cracked but our pipefitter dad welded additional beads around all our bikes at that weak point.

Two of us also added angle iron to the tubes between the seat post tube and back bar where the rear shocks were mounted. We drilled holes in the angle iron for additional shock angle options. We also put number plates there with wire and had number plates in front of the handle bars. Add some cool motorcycle stickers, FMF, Redline, etc.. and too cool!

Crank shaft pins bent easily and added play to the 3 piece cranks. That was one problem that went away with the American 1 piece cranks, but those bent if you bottomed out hard, which we did hahaha!

Front sprockets also took a beating on those, throwing the chain was the symptom that needed to be pounded back in to shape. I eventually moved on from BMX to skateboarding and sold my then repainted in GASP Honda red to a neighbor who eventually threw what was left of it away.

I'd sure like to have it back just out of nostalgia. Was neat to see others still have fond memories of the Moto Bikes. Nice!
 

crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#22
The last of our gang got the last year with the one piece crank. His was stolen from under his porch. Probably bent three cranks in one summer, big kid..
 

Nsxbrent

On Training Wheels
Oct 10, 2016
6
2
56
#23
Old thread dug up, is anyone still into these Yamaha Moto Bikes? I have a completely original 1976 model C that was found in mint condition under a quilt where it was left 43 yrs ago. I also have a restored with all NOS parts 1974 model A that's nicer than the brand new one I got as a kid in 74. On top of those I have 4 more complete, model A,B and 2 model Cs in various conditions. Will try to post photo

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crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#31
@Nsxbrent Did I just buy this from you? Just closed the deal on eBay and hope to have it here soon. I noticed that one of the swingarms in your photos is black like the odd one on this. Regardless, can you or any others give details on what parts from what years are on this?
74 frame, fender, and cranks with 76 seat, forks, chain guard, tires, bars? Still cool. Will enjoy having even if Frankenbike to some degree..

All I remember about my original was that it had the 3 piece cranks, chrome bars, and either no banana seat, or I changed the seat to a post seat early on.

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crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#34
@Nsxbrent Did I just buy this from you? Just closed the deal on eBay and hope to have it here soon. I noticed that one of the swingarms in your photos is black like the odd one on this. Regardless, can you or any others give details on what parts from what years are on this?
74 frame, fender, and cranks with 76 seat, forks, chain guard, tires, bars? Still cool. Will enjoy having even if Frankenbike to some degree..

All I remember about my original was that it had the 3 piece cranks, chrome bars, and either no banana seat, or I changed the seat to a post seat early on.

s-l1600.jpg


s-l1600.jpg


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@odds&sods What's your diagnosis here with this one? 75 B frame with 76C forks?
Would appreciate some more educated eyes to tell me what I just bought hahaha..
 

crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#35
She's here. Seat looks pretty sweet, crossbar pad is also killer. No runs or drops in the paint. A few places where it is chipped do not show signs of multiple layers. Looks pretty legit for a FrankenBike. Still agree the forks are 76 but the frame and cranks are 75 or 74. Swingarm appears to be a replacement of some kind, because it is flat black. Still a very cool score!

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No creaks, no wobbly cranks or rattly head set. 100% solid bike!
 

crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#36
SN placement seems to suggest a late 75B model. Beginning to think it's possible the 76 forks made it on a couple very late 75Bs? Still no clue why the swingarm is black. Looks really cool black swingarm with the black bars and seat. Perhaps this was a demo or blem at the end of 75 right before the official 76s with the single piece American cranks came?? That would explain it all being minty but a little mixed up/different than straight 75 or staight 76.
 
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crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#37
OK added the reflectors I was missing, picked up an owner's manual, but only found a 76C. I would prefer a 75B but other than the cranks pretty much the same parts as 76 since I have the 76 forks (still with the sticker on them). I'm still waiting on a number plate which I will add a "75" to when I hang it on the front.
 

52Ford

On Training Wheels
Mar 13, 2017
1
0
54
#38
Does anyone have a source for the fork seal dust caps for a Model C. Also, has anyone had the fork tubes re-chromed and if so where did you have them done?
 

crgildart

'Lil Knee Scuffer
Feb 12, 2017
11
0
54
Durham, NC
#40
Still waiting on the J60 cat eye reflectors. Added the number plate and FMF sticker. Jumped it on a little ramp just a couple times. Putting it away now for only flat ground dry pavement trips around the block on special occasions now.

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