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chounder
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VBMWMO #8072
Joined: 07/02/2011
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Is it just the tank? The year? The model? Any BMW with a chrome tank?

Just interested in starting a discussion to see what opinions other riders have... Discuss!

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
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I think this pretty much

I think this pretty much defines it:

http://en.wikipedia.org/wiki/BMW_/5_motorcycles

I think some of the tanks may have slipped over into the '73 model year:

http://bmwdean.com/r75.htm

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

72airheadtoaster
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So it looks like"Toasters"

So it looks like"Toasters" were only made in 1972 and 1973, yet on this site I see many pictures of 1971's, 1975's, etc. with chrome sided tanks. Guess I'm confused.

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
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At the time, the chrome side

At the time, the chrome side panels were not exactly a hit with the customers and I've heard that many were taken off and thrown away. But with the nostalgia, people want them and will try to fit them and the tanks on models that didn't originally come with them.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

iagins
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VBMWMO #8471
New Mexico
Joined: 03/12/2013
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"Not exactly a hit with the

"Not exactly a hit with the customers" is more than a little understatement. At the time, I thought it was downright scandalous! Not only the chrome on the tank, but the bikes were in color. Green! Orange! Yellow! That, and the switch to plastic from steel with the /5's, led me and others to believe that BMW had sold out in the face of Japanese competition. In fact, I sold my '70 R60/5 and bought a '68 R60/2 because I came to believe the /5 wasn't a real BMW.

And now they are sought-after. Go figure. Smile

Cheers!

Ira Agins
Santa Fe, NM

72airheadtoaster
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I just fell into my 1972,

I just fell into my 1972, but I'll tell you I'm a big fan. Much better looking than the Black tank models. Classy look w/o it looking like a work vehicle bought by the county as a delivery vehicle. But thats just me. Thanks for the info, and Schrader, I think you're right.

JD
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Here's the only toaster I

Here's the only toaster I own, and it's a LWB '73. Basically, it's a toaster because of the chrome paneled tank and the (missing) chrome side panels. I get the sense that toasters were only made in '72(?) and '73.

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
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According to Ian Falloon's

According to Ian Falloon's book, the toaster version was strictly a '72 model (Sept '71 to August '72) and because it wasn't universally accepted, wasn't offered in 1973. According to the VINs listed it wasn't exactly at the start or end of the '72s but plus or minus with the beginning and ending dates.

Could be that with the parts sitting around the dealer, maybe a customer or two opted to have the toaster parts installed in 1973??

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

72airheadtoaster
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Bare with me, but how do you

Bare with me, but how do you tell a Long wheel base from a short wheel base. What is my 1972 R60/5 ?

72airheadtoaster
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Fuel Concerns

What would be the best and safest fuel to use in my 1972 R60/5. I've been looking for gas without ethanol, but have been told it's no l onger available in Michigan. I thought most High Test (91-93 octane) was ethanol free, but I guess not anymore. What do you guys use ? Is there any additive that can be used to counter act the negative effects of ethanol fuel ?

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 4500
Unless modified, a 1972 is a

Unless modified, a 1972 is a short wheel base bike. Duane has some good pictures here:

http://w6rec.com/duane/bmw/whbase/

Have you checked this website for ethanol free gas stations in Michigan:

http://pure-gas.org/extensions/map.html

As for gas, the R60/5 is relative high compression at 9.2:1 so you're going to need to run the highest octane. This will help reduce the amount of pinging if the bike tends to do that. Beyond high octane, people have used base gaskets to reduce the compression ratio or have installed electronic ignition which delays the advance curve.

I ran additives in my /7 for years worried about valve seat recession because of unleaded gas. It probably really didn't help...just lighted my wallet. It also caused me a problem when I used too much of it at one point and it gunked up my spark plug while on a trip. Luckily I had a spare to swap in. The stuff leaves deposits in the combustion chamber which can actually increase the compression ratio. The only real cure is to perform a top end overhaul...I just did that on my /7. The bike has been rejuvenated and I no longer have to carry little bottles of additives.

Just run the bike with the highest octane and watch the valve clearances. When they start to close up quickly every 500 miles or so, it's time to get the top end overhauled.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

72airheadtoaster
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Good info, thanks !

Good info, thanks !

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