Thread size

cleg · Post by **cleg** » Sat Dec 20, 2014 2:45 pm

Are the threads on the Superhawk left side crankshaft size 20x1.5 ? I bought a crank and the threads are messed up. I can't get the nut to thread on.

G-Man · Post by **G-Man** » Sat Dec 20, 2014 3:30 pm

Hi

I don't have one nearby to measure but you could check the pitch against a regular M10 bolt which is 1.5mm pitch. Honda use M10 fine normally do you need a regular M10 from a hardware store.

I'll measure one for you tomorrow if that helps.

G

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Dec 20, 2014 4:09 pm

He stated NUT not Bolt.
Ya may want to file off the bad threads until you can get the nut to start. ..........lm

G-Man wrote:Hi

I don't have one nearby to measure but you could check the pitch against a regular M10 bolt which is 1.5mm pitch. Honda use M10 fine normally do you need a regular M10 from a hardware store.

I'll measure one for you tomorrow if that helps.

G

G-Man · Post by **G-Man** » Sat Dec 20, 2014 4:20 pm

LM

You misunderstood me. I was just suggesting that he use an M10 bolt as a thread gauge to check that the pitch was 1.5mm.

He should be able to tidy up the thread with a needle file if it's not too bad.

The question was about what size the thread was on the crank.......

G

LOUD MOUSE wrote:He stated NUT not Bolt.
Ya may want to file off the bad threads until you can get the nut to start. ..........lm

G-Man wrote:Hi

I don't have one nearby to measure but you could check the pitch against a regular M10 bolt which is 1.5mm pitch. Honda use M10 fine normally do you need a regular M10 from a hardware store.

I'll measure one for you tomorrow if that helps.

G

G-Man · Post by **G-Man** » Sat Dec 20, 2014 4:25 pm

One of the could be handy for tidying up the crank end if it's not too bad.

http://www.ebay.com/itm/Thread-Restorer ... 4d2a389ba0

G

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Dec 20, 2014 4:43 pm

It is a 1 pitch which is visible by eye to a 1.25 or 1.50.
We both recommended he file the shaft as to purchase a die for a one time use is expensive. ............lm ......................lm

G-Man wrote:LM

You misunderstood me. I was just suggesting that he use an M10 bolt as a thread gauge to check that the pitch was 1.5mm.

He should be able to tidy up the thread with a needle file if it's not too bad.

The question was about what size the thread was on the crank.......

G

LOUD MOUSE wrote:He stated NUT not Bolt.
Ya may want to file off the bad threads until you can get the nut to start. ..........lm

G-Man wrote:Hi

I don't have one nearby to measure but you could check the pitch against a regular M10 bolt which is 1.5mm pitch. Honda use M10 fine normally do you need a regular M10 from a hardware store.

I'll measure one for you tomorrow if that helps.

G

cleg · Post by **cleg** » Sun Dec 21, 2014 12:20 pm

Thanks guys. I ended up using a die grinder to get to some decent threads.
I have the left side together (a peek at LM's nice clutch). Does the stack on the crank look correct, before I tighten the nut with a spanner?
I've also attached a pic of my rebored and copper lined sleeves cylinder.