Planet Minis

C_Thut · 02-17-2007, 11:52 AM

ok so i replaced the stator assembly and put everything back together and it started right up, but as some of you might remember, the original key sheared so i picked up a woodruff key at home depot and shaped it to fit. now, that homeade key cuased alot of havoc and sheared and when it sheared it took a chunk of metal out of the keyway so now i need to find a new crankshaft for my 72 but i cant find one anywhere on the net, any suggestions? if its to expensive ill just save up the money and buy a lifan or something.

dirtbkr188 · 02-17-2007, 12:29 PM

I'm sure I have a used Z50 crank assembly here, give me a day or so to look for it.

bbmatthewbrown · 02-17-2007, 12:41 PM

I think dratv has one for about 40 bucks brand new. hoped that helped

fatcaaat · 02-17-2007, 12:41 PM

I have, what appears to be, a brand new crankshaft assembly for z50. I don't think that it is a honda based shaft, but its either new or just slightly used.

dirtbkr188 · 02-17-2007, 03:43 PM

Quote:

Originally Posted by bbmatthewbrown

I think dratv has one for about 40 bucks brand new. hoped that helped

That particular crank assembly is only for the 12V CDI '88-'99 Z50R, the '00-'03 XR50/70 and the '04-'07 CRF50/70, it will not work with the 6V points-type ignition that the '72 Z50A has.

d0n · 02-17-2007, 03:57 PM

if the shaft is ruined to the point that you can't use it ... why not just jam the key in and tack weld the flywheel onto the shaft? At this point, waddya got to lose? That would be a heck of a lot easier than installing a new crank.

C_Thut · 02-17-2007, 04:07 PM

installin a crank isnt a big deal, i found a 73 crank for 30 dollars on ebay but my question is, will it be compatable on my 72?

C_Thut · 02-17-2007, 04:08 PM

http://cgi.ebay.com/ebaymotors/1973-...spagenameZWD1V ^^

dirtbkr188 · 02-17-2007, 04:41 PM

Quote:

Originally Posted by C_Thut

installin a crank isnt a big deal, i found a 73 crank for 30 dollars on ebay but my question is, will it be compatable on my 72?

...YES...

bbmatthewbrown · 02-17-2007, 04:52 PM

Quote:

Originally Posted by dirtbkr188

That particular crank assembly is only for the 12V CDI '88-'99 Z50R, the '00-'03 XR50/70 and the '04-'07 CRF50/70, it will not work with the 6V points-type ignition that the '72 Z50A has.

my bad

C_Thut · 02-17-2007, 05:29 PM

Quote:

Originally Posted by dirtbkr188

...YES...

thanks for the info, i just bought it so i should be getting my bike running shortly.
and BTW dirtbkr, the reason my bike was running ****ty isnt becuase of the carb tuning it was the timing.

C_Thut · 02-17-2007, 05:30 PM

my bad double post

arlindsay1992 · 02-17-2007, 08:52 PM

Hope you get it all together soon. Have you ever split the cases before?

C_Thut · 02-18-2007, 09:16 AM

Quote:

Originally Posted by arlindsay1992

Hope you get it all together soon. Have you ever split the cases before?

yup, actualy a couple times so its not i big deal.

after i take the old crankshaft out im probly gonna have it welded and re-machined so i have it for a backup or something

C_Thut · 02-18-2007, 07:07 PM

just incase any of you wanted to see i took a pic of the keyway,

arlindsay1992 · 02-18-2007, 10:09 PM

Oh hell. That's pretty messed up. That's just a real easy way of retarding your ignition.

korda · 02-18-2007, 11:15 PM

I guess I should put in that new honda key I bought and take out the one I shaped to fit before that happens to me.

I think I've got a crank around but you'd probably be better off paying $30 for one rather than using the random parts I have laying around.

C_Thut · 02-18-2007, 11:40 PM

Quote:

Originally Posted by korda

I guess I should put in that new honda key I bought and take out the one I shaped to fit before that happens to me.

I think I've got a crank around but you'd probably be better off paying $30 for one rather than using the random parts I have laying around.

lol ya your better off just buying a new key rather than making your own. i already bought one off ebay a couple days ago so im all set but thanks for thinking about me anyways

02-17-2007, 11:52 AM	#1 (permalink)
C_Thut 2nd Gear Member Join Date: Jun 2006 Location: morris/wolcott CT Posts: 322	crankshaft ok so i replaced the stator assembly and put everything back together and it started right up, but as some of you might remember, the original key sheared so i picked up a woodruff key at home depot and shaped it to fit. now, that homeade key cuased alot of havoc and sheared and when it sheared it took a chunk of metal out of the keyway so now i need to find a new crankshaft for my 72 but i cant find one anywhere on the net, any suggestions? if its to expensive ill just save up the money and buy a lifan or something.

02-17-2007, 05:30 PM	#12 (permalink)
C_Thut 2nd Gear Member Join Date: Jun 2006 Location: morris/wolcott CT Posts: 322	my bad double post Last edited by C_Thut; 02-17-2007 at 05:37 PM.

02-17-2007, 12:29 PM	#2 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	I'm sure I have a used Z50 crank assembly here, give me a day or so to look for it.

02-17-2007, 12:41 PM	#3 (permalink)
bbmatthewbrown 2nd Gear Member Join Date: Jan 2007 Location: Northern California Posts: 306	I think dratv has one for about 40 bucks brand new. hoped that helped

02-17-2007, 12:41 PM	#4 (permalink)
fatcaaat 3rd Gear Member Join Date: Sep 2004 Location: Arlington, VA Posts: 3,778	I have, what appears to be, a brand new crankshaft assembly for z50. I don't think that it is a honda based shaft, but its either new or just slightly used.

02-17-2007, 03:57 PM	#6 (permalink)
d0n 3rd Gear Member Join Date: Nov 2005 Location: Troy NY Posts: 2,172	if the shaft is ruined to the point that you can't use it ... why not just jam the key in and tack weld the flywheel onto the shaft? At this point, waddya got to lose? That would be a heck of a lot easier than installing a new crank.

02-17-2007, 04:07 PM	#7 (permalink)
C_Thut 2nd Gear Member Join Date: Jun 2006 Location: morris/wolcott CT Posts: 322	installin a crank isnt a big deal, i found a 73 crank for 30 dollars on ebay but my question is, will it be compatable on my 72?

02-17-2007, 04:08 PM	#8 (permalink)
C_Thut 2nd Gear Member Join Date: Jun 2006 Location: morris/wolcott CT Posts: 322	http://cgi.ebay.com/ebaymotors/1973-...spagenameZWD1V ^^

02-17-2007, 08:52 PM	#13 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Hope you get it all together soon. Have you ever split the cases before?

02-18-2007, 07:07 PM	#15 (permalink)
C_Thut 2nd Gear Member Join Date: Jun 2006 Location: morris/wolcott CT Posts: 322	just incase any of you wanted to see i took a pic of the keyway,

02-18-2007, 10:09 PM	#16 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Oh hell. That's pretty messed up. That's just a real easy way of retarding your ignition.

02-18-2007, 11:15 PM	#17 (permalink)
korda PM Newbie Join Date: Jun 2006 Location: San Diego, CA Posts: 30	I guess I should put in that new honda key I bought and take out the one I shaped to fit before that happens to me. I think I've got a crank around but you'd probably be better off paying $30 for one rather than using the random parts I have laying around.

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