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Frog 2.49 BB

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Old 08-11-2018, 05:32 PM
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chrisb5259
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Default Frog 2.49 BB

I've got a Frog 2.49 BB Mod., the crankshaft won't spin freely and I want to inspect the rear bearing. Are there any hints or tips about removing the crankshaft I should be aware of? Any ideas for a suitable replacement for the front oil seal?

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Old 08-11-2018, 11:18 PM
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qazimoto
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Originally Posted by chrisb5259 View Post
I've got a Frog 2.49 BB Mod., the crankshaft won't spin freely and I want to inspect the rear bearing. Are there any hints or tips about removing the crankshaft I should be aware of? Any ideas for a suitable replacement for the front oil seal?
Apparently the front seal was a wheel slave cylinder cover from a well know British small car of the 1950's. Can't remember the details. A bloke I used to know made up a nice replacement for his from black Delrin.

Probably the best bet is for you to scour this thread on the topic from the Barton Forum :-) It doesn't come up with a definitive solution either but at least it identifies the bearings. Both R6 size like an Olly.

http://controlline.org.uk/phpBB2/viewtopic.php?t=11427&highlight=frog+249+front+bearing+boot

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Old 08-12-2018, 12:09 PM
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chrisb5259
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Thanks, I'll have to make one if I can't find one.
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