Which crank is this?

Current thinking is that this is a Triumph Unit 650 crank which needs only light repairs.

Opinions are invited as to which engines it will fit and who could undertake necessary fettling.

Answers in the “Comments” box please.

7 DSC07370 (1) 6 DSC07366 (1) 5 DSC07363 (1) 4 DSC07359 (1) 3 DSC07354 (1) 2 DSC07351 (1)


2 thoughts on “Which crank is this?

  1. It was a 650 Triumph crank.Early;maybe ’59-’62.Major damage on drive-side splines (1/2 worn away).Undersize timing-side mainshaft (punched all over to “fix”,OK for 5 minutes).Extra stress raisers drilled at sludge plug (where they break).Hardly worth the expense of crack-testing,with other repairs and a regrind to follow.The flywheel looks OK.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s