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Title: Who made this Crankshaft? Post by: JoeHurley1892 on March 26, 2018, 21:18:30 pm Hi,
I bought this Crank at the Volksworld show and the guy had no idea about it, so I got it at a good price so had to buy it :D. I know some companies like DPR and Berg would use standard crank and stroke/counterweight them etc, but I haven't got many markings to go by. It looks like its been knife edged and counterweight and it has chamfered oil ways I haven't measured it properly but in comparison to other cranks its either a 69mm or 74mm. Its a lot more chunky then my CB 74mm Crank What is strange is it has been left 4 dowelled. The only markings I can find are the VW one stamped on it. Anyone have any ideas? (https://farm1.staticflickr.com/899/40326621344_7bed49c01c_k.jpg) (https://flic.kr/p/24rwtyU)20180326_181743 (https://flic.kr/p/24rwtyU) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/816/40141860455_13cee563b0_k.jpg) (https://flic.kr/p/24acwAk)20180326_181607 (https://flic.kr/p/24acwAk) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/816/40326697234_2bd272804a_k.jpg) (https://flic.kr/p/24rwS8m)20180326_181559 (https://flic.kr/p/24rwS8m) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/889/40326723454_d714447a60_k.jpg) (https://flic.kr/p/24rwZVq)20180326_181547 (https://flic.kr/p/24rwZVq) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/898/26164422247_354f6d4060_k.jpg) (https://flic.kr/p/FS4vbp)20180326_181612 (https://flic.kr/p/FS4vbp) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/793/40993409122_cfb06ca584_k.jpg) (https://flic.kr/p/25srWkU)20180326_181626 (https://flic.kr/p/25srWkU) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr (https://farm1.staticflickr.com/783/39226255370_4a5c322a4b_k.jpg) (https://flic.kr/p/22LhP6L)20180326_181800 (https://flic.kr/p/22LhP6L) by Hurley Photography (https://www.flickr.com/photos/147589619@N04/), on Flickr Title: Re: Who made this Crankshaft? Post by: SlingShot on March 27, 2018, 04:26:36 am Im going with Berg on this one. I believe they would weld the CW from one side only (don't quote me on this, unless I'm correct ;-)
Ive seen similar 4 digit no's on other Berg cranks and flywheels. Also the X on the butt end would be a good way to match it to a stock 4 dowelled flywheel, that it most likely was purchased with. Title: Re: Who made this Crankshaft? Post by: dangerous on March 27, 2018, 22:25:46 pm Berg would be my best guess also,
based on counterweight shape and , yes, the weld on the inside of the counterweight. Title: Re: Who made this Crankshaft? Post by: glenn on March 27, 2018, 22:50:42 pm Can't imagine Berg selling a CW crank with only 4 dowels.
I had a Berg 69 CW crank and it was 8 dowel. Title: Re: Who made this Crankshaft? Post by: neil68 on March 29, 2018, 04:23:53 am Agree, that looks like my old Berg 69 mm crank. When I bought it for my 69 Westy years ago, GBE recommended staying with the stock 4-dowel flywheel.
Title: Re: Who made this Crankshaft? Post by: modnrod on March 30, 2018, 03:19:45 am I had a chat to a old-time crankshaft guy pretty famous in Aust (and elsewhere) about dowelling. Interesting.
His general rule-of-thumb was under 6000 on a balanced but stock non-CW 4-dowel crank was no problems as long as you used an oversize washer and the right torque. Heavy rear wheels and light flywheels reduce that a fair bit though. Title: Re: Who made this Crankshaft? Post by: stealth67vw on April 02, 2018, 02:59:11 am Can't imagine Berg selling a CW crank with only 4 dowels. Berg did sell them as 4 dowell so you could properly match dowel to the flywheel.I had a Berg 69 CW crank and it was 8 dowel. Title: Re: Who made this Crankshaft? Post by: Martin S. on April 04, 2018, 22:58:02 pm I think I remember reading that fact from Berg from their catalog somewhere. They were very particular about the fit of the dowels as well as the fit of the clutch to the flywheel, etc. They liked to have a snug fit (understatement). I even made a flywheel puller from an old flywheel flipped over, the threaded holes reamed out for bolts, and a large nut welded to the thing. With a bolt in the center I could easily pull off the fw without rocking it ;)
Here are some pics of a 69 CW crank from Berg that I bought in the 90's as part of one of their engine kits. Title: Re: Who made this Crankshaft? Post by: Martin S. on April 04, 2018, 22:59:15 pm more pics. The rods are from Berg too and haven't been removed since the 90's ;D
All is in perfect shape! These parts were left over from when we re-used the case which is going strong still with my 2332 turbo. :) |