ISDT Qualifier

[Paul Danik]

Donny,

   My Six-Day bike in 74 had the "D" cylinder, I can remember preping my bike in the Penton work area and some onlookers making a point about the "D" cylinder.  At the time I was not aware of the differences and didn't pay much attention to it.  Years later when a discussion about these engines came up I remembered those comments and looked at some close up pictures of my ISDT machine and sure enough it was a "D" topend.  The only other experiance that I have with those engines was watching as Kent's rider passed me on an uphill start in a motocross at Honds Hills a few years back on a "D" engine powered Penton, I though I had lost a cylinder:D

   There is more Sachs engine info in Mark Halloways Monark website.
http://www.vintagemonark.com/
If you go to his FAQ section and scroll to the bottom he has a link to a picture of Sachs stuffed cases, he also gives some explanations concerning the Sachs GS Pro engines.
Paul

[Dwight Rudder]

This is what I found for Monark with the 125 cc engine.
I don't think the KTM motors had the GS shifting.
 
Leo

7.547.001

7.547.028

Monark

1251/6 B GS

19,00

25.05.1973

28


7.547.229

7.547.321

Monark

1251/6 B GS

19,00

08.06.1973

93


7.547.350

7.547.378

Monark

1251/6 B GS

19,00

29.06.1973

29


7.547.632

7.547.831

Monark

1251/6 B

18,00

31.08.1973

200


7.547.901

7.547.901

Monark

1251/6 B GS

19,00

29.06.1973

1


7.547.902

7.548.058

Monark

1251/6 B GS

19,00

03.07.1973

157


7.548.458

7.548.458

Monark

1251/5 D

17,00

10.08.1973

1

Dwight Rudder
7 time ISDT / E medalist
8 time National Enduro Class Champion.

[OUCWBOY]

Thanks Dwight,
As always you are a great source of information. Tell Leo we all say thanks as well.
Regards

Donny Smith

[Dwight Rudder]

quote:Originally posted by firstturn

Dwight,
  Thank you for your leg work.  One question....what is Leo refering to when he uses the initials CMC...chrome moly chassis??  Thanks again.  It is time that we nail down some of the myths and give people as exact answers as we can.  We will never be 100%, but we will get high marks for great information and trying to do it right.  I hope you are healing fast.

Ron Carbaugh

The 1251/5A came in 1968, the /5B in about 1970 (army bike motor), the /6A
was later than the /5B, than 6B and 5CMC, in 1974 came the 6C street, in 75
the 6D and 5EMC. In 1976 they had the 1252/1752/2501/2551 /7A, AMC, AMMC
(reed valve) motors, no "B" version.

So: just a little bit of system.

Leo

Dwight Rudder
7 time ISDT / E medalist
8 time National Enduro Class Champion.

[firstturn]

Thanks Dwight via Leo Keller.

Ron Carbaugh

[rob w]

My projects include a "B", an "A", and a "D" engine.
When they're finished, it'll be B-A-D, as in good.......[8D] [xx(] [B)]


Brob

[firstturn]

I think you need to move the black eye over one;).  Good...[]

Ron Carbaugh

[bentrims]

Anyone in California have a 125 Penton they will rent out for Anza? It could be a B,A,or D. Another weekend like Don's would be R-A-D!
Tom B
(Still fishing for a RIDE)

[OUCWBOY]

Tom
I wish I did. But my only running bike is in Arkahsas.

Rob,
you gotta get up to date on the NEW language, it's called SICK these days.

Donny Smith

[firstturn]

Tom,
  I can see the writing on the wall.  We are going to have to have a North and South Penton for you to ride.  Thanks again for the great time at Diamond Don's Race.[8D]

Ron Carbaugh

[bentrims]

Bill's Monark is too nice for a possible west coast mudder. I keep my bike semi-ugly by design.
TB

[bentrims]

I did send a mail out to Ric Emmal to help me locate a 6 Days.

[OUCWBOY]

Tom,
We all know the Monark is a fine MX machine, but I am sure we would rather see you Win on a Penton.

Donny Smith