1930 Crankshaft Shock Absorber

[simon.holyfield]

Need a bit of guidance...

The picture shows the bits of my 1930 Model A crankshaft shock absorber, as they came off (not the scabby footrest!) - the big nut was being used as a spacer.

The spring and its 'retaining collar' are missing. Lee suggested using a Lambretta spring, which is on the way, but could someone help me with a picture of the assembly (or pictures of bits) to help me make the collar?

[Mick D]

Hi Simon

I have a Lambretta shock absorber in bits on the bench at the moment if you need any dimensions.

Regards Mick

[simon.holyfield]

That's a lucky coincidence! Would you mind measuring the ID and length of the spring?

[Vincent.vanGinneke]

Looks the same as on my '28
ESA spring sits behind the sprocket.
you mean the collar against the bearing?
I can make a pic from the collar, but perhaps Karol has one?

[Mick D]

Hi Simon

Free length = 37.5mm
ID = 35mm
Wire dimeter = 6.85mm

Regards Mick

[simon.holyfield]

Thank you Vincent. According to the parts book, 28 is different but I'm not sure how yet - I think the dynamo sprocket is just sandwiched in there.

A picture would be great.

[simon.holyfield]

Hi Simon

Free length = 37.5mm
ID = 35mm
Wire dimeter = 6.85mm

Regards Mick

Lovely thanks. I'll do some measuring!

[Vincent.vanGinneke]

pics from the distance piece, simple thing.

[simon.holyfield]

Lovely thanks Vincent. Presumably that's the bit that goes against the main bearing?