Mirror thread size?

GregMcN · Post by **GregMcN** » Sun Jul 09, 2017 1:08 am

Hi
Would just like to introduce myself to the forum and start with a simple question. I am Greg based in North East England. I have just acquired a CB77. There are engine/running issues that I need to sort but as a starting point there are no mirrors but noticed the fittings have different threads so please can someone tell me what size threads the mirrors are?
Thanks Greg

G-Man · Post by **G-Man** » Sun Jul 09, 2017 12:21 pm

Welcome, Greg.

Early M8, later M10.

G

GregMcN · Post by **GregMcN** » Sun Jul 09, 2017 3:35 pm

Thanks G Man. I have one lever mount that is 7mm and the other is about 11mm so looks like neither of them are original!

G-Man · Post by **G-Man** » Tue Jul 11, 2017 4:53 pm

Sounds like you might be measuring the inside dimeter of the threads, there.

Try an M8 bolt in the 7mm one.

G

GregMcN wrote:Thanks G Man. I have one lever mount that is 7mm and the other is about 11mm so looks like neither of them are original!

Merz64cb77 · Post by **Merz64cb77** » Tue Jul 11, 2017 8:27 pm

Hi Greg
I have the exact same issue. The clutch perch is 10mm but the brake perch is 8mm. My hawk is also a 67'.

I purchased a perch from eBay but the threaded hole for the mirror had a sleeve in it. If you buy from eBay be sure to confirm the thread size.

If you re looking for new repro perches tim at classic honda restoration had a nice set of 8mm.

rrietman · Post by **rrietman** » Tue Jul 11, 2017 11:23 pm

Really? I thought the first 10mm was the 350. never seen a 305 with 10mm but that doesn't mean I have seen it all. inquiring minds want to know.
Thanks
Randy

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