Planet Minis

sketchycheck · 06-18-2009, 10:34 AM

its 3 down right like my 1971? how reliable is that tranny if i do an 88 kit? an my 1971 has wicked tight gearing an tops out very slow like 20mph haha is the 79 any faster?

ducatilover · 06-18-2009, 11:28 AM

tranny will hold. Upgrade the clutch springs. Whats your gearing on the 71. If its stock it should be 13/37.

mexicanyella · 06-18-2009, 01:49 PM

My two '71 bikes both came with 12/35 on them, and the one that is complete and running tops out in the upper 20s when it's running right and will rev out. That's with a 4.00x8 tire on the back, which is a little taller than the stock 3.50x8. Stock never-rebuilt '71 motor runs good but may be a bit tired; starts to run out of steam much above 7500 rpm wide open. Although that may be a result of the tiny carb and exhaust too. Gearing up to 14/35 is not a viable option; you gain a little speed but then can't climb any real hills without shifting down to second. I've not tried 13/35 yet, but will probably just leave it at 12/35 until I find some more power. I need "climb" more than "fast."

The '74 parts bike I have here came with 13/37, as ducatilover says.

sketchycheck · 06-18-2009, 08:36 PM

ya its 13/37 i think my trannys on its way out in the 71 an the clutch feels weird, im just wonderin if stock will the 79 keep up with a newer 90's z50?

sketchycheck · 06-19-2009, 12:05 AM

and did this year ever come with gold rims? or they spray painted? guy said he never painted it the bike just sat, also has a gold sprocket

06-18-2009, 10:34 AM	#1 (permalink)
sketchycheck 3rd Gear Member Join Date: Jun 2008 Location: middleboro,massachusetts Posts: 1,275 My Mood:	1979 z50 its 3 down right like my 1971? how reliable is that tranny if i do an 88 kit? an my 1971 has wicked tight gearing an tops out very slow like 20mph haha is the 79 any faster?

06-18-2009, 11:28 AM	#2 (permalink)
ducatilover 2nd Gear Member Join Date: May 2008 Location: Peoria, AZ Posts: 607 My Mood:	Re: 1979 z50 tranny will hold. Upgrade the clutch springs. Whats your gearing on the 71. If its stock it should be 13/37.

06-18-2009, 01:49 PM	#3 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 915	Re: 1979 z50 My two '71 bikes both came with 12/35 on them, and the one that is complete and running tops out in the upper 20s when it's running right and will rev out. That's with a 4.00x8 tire on the back, which is a little taller than the stock 3.50x8. Stock never-rebuilt '71 motor runs good but may be a bit tired; starts to run out of steam much above 7500 rpm wide open. Although that may be a result of the tiny carb and exhaust too. Gearing up to 14/35 is not a viable option; you gain a little speed but then can't climb any real hills without shifting down to second. I've not tried 13/35 yet, but will probably just leave it at 12/35 until I find some more power. I need "climb" more than "fast." The '74 parts bike I have here came with 13/37, as ducatilover says.

06-18-2009, 08:36 PM	#4 (permalink)
sketchycheck 3rd Gear Member Join Date: Jun 2008 Location: middleboro,massachusetts Posts: 1,275 My Mood:	Re: 1979 z50 ya its 13/37 i think my trannys on its way out in the 71 an the clutch feels weird, im just wonderin if stock will the 79 keep up with a newer 90's z50?

06-19-2009, 12:05 AM	#5 (permalink)
sketchycheck 3rd Gear Member Join Date: Jun 2008 Location: middleboro,massachusetts Posts: 1,275 My Mood:	Re: 1979 z50 and did this year ever come with gold rims? or they spray painted? guy said he never painted it the bike just sat, also has a gold sprocket

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