attn: SACHS experts

Peter Chudzik /
pachudzik
Jun 29, 2008 10:20PM

Is there any way to distinguish between the crankshaft/connecting rod of a 505 1a/b/c and that of a 505 1/d without measuring it (i.e. any identifying marks that may be stamped on it, or visible characteristics that are specific to the "d" version)?

To any former sachs retailers or mechanics: Does the number "07005" ring any bells? It has been found on the inside of a NOS box with a sachs crankshaft.

If there is no good way to identify the crankshaft/connecting rod without measuring it, What is the best way to measure its stroke? Thanks!

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Re: attn: SACHS experts

Gym-Me IRE /
humanaquarian
Jun 29, 2008 10:51PM

Just curious, but I ll bet the flywheel nut broke offat the shaft?? Seem stot be a common problem, as I am finding out myself

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Re: attn: SACHS experts

triumph3434 /
triumph3434
Jun 29, 2008 11:54PM

Very Curious on this one. I juste recently h ad my "d" open, and I just checked the pics I took. THere is definatly a model number on the side of the rod, but I could not read it.

BUMP

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Re: attn: SACHS experts

Peter Chudzik /
pachudzik
Jun 30, 2008 01:38AM

No this isn't my problem. I'm trying to identify an NOS crank via a photo. I'm going for the extra 2cc displacement with the "d" crank.

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Re: attn: SACHS experts

BryAn eurism /
b_of_m
Jun 30, 2008 01:41AM

Busted off threads? can't use an impact with that skinny 8m. The plus side out of the whole thing is there are way more wore-out tops that can't be replaced than there are cases.

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Re: attn: SACHS experts

Graham Motzing /
grahammotzing
Jun 30, 2008 11:42AM

the con-rod's should be the same for D and A cranks. measure from the center of the big-end pin, to the edge of the crankshaft, then multiply that by two and add the diameter of the shaft, should get you the stroke.

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Re: attn: SACHS experts

educatetheyouth /
educatetheyouth
Jun 30, 2008 03:31PM

the 'A' and 'B' cranks are the same but is different from the 'C' and 'D' which are the same. the C and D have the same stroke but

the D gets more power from the bigger and smoother ports

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Re: attn: SACHS experts

Mike Bartell /
mikebartell
Jun 30, 2008 07:41PM

you can't ID it from a photo, you would have to measure it. I did notice that when I pressed the D crank apart to make the 504 D there was a small divot on the inside face of the crankshaft. Chances are if the guy won't measure it, he's not going to take a macro-photo to see if there is a divot on the inside of the crankshaft.

Daniel, if you want to educate the youth, quit being wrong.

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Re: attn: SACHS experts

educatetheyouth /
educatetheyouth
Jul 01, 2008 01:53AM

Oh ok Mike Bartel. I dont think ill ever really quit being wrong. That

includes me, you and everyone else on this planet. The trick is to learn from your mistakes and try to minimize them. Geez freaking Nazi. oh yea nice play on words

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