Planet Minis

mexicanyella

1. It's been a long time since I've gotten close to an ST90, but from looking at pictures the frames look the same between the ST90s and CT70s.

_True
_False

2. Further studying of pictures gets me thinking that an ST90 swingarm looks quite a bit like a twin-shock XR75/80 swingarm, and that it appears to mount outside the frame instead of inside like a CT70 swingarm does. This makes me think a person could make up a stout tubing spacer to fill the area inside the frame where the CT swingarm would go and put the longer, tubular, probably stronger XR-type swingarm outside the frame at this point, if the widths and pivot diameters were compatible.

Yes? No? Comments?

I'm thinking of this because I have a non-running CT70 with an H motor in it sitting in my garage and CT70 mania has not hit me yet. But I've always thought ST90s were cool-looking. And I notice there are an awful lot more parts options for the 50/70 type engines than the old 90/110/125M ones. Since there are only about 12 running ST90s still on the planet but 19 million CT70s, wouldn't it make sense to do a ST-style restomod to a CT70? Please help me focus my thoughts. I want to help that bike rejoin the world of running transportation. But do I want a stock CT70? Or do I want a wild-eyed, free-wheeling explosion of manic experimental energy, with no safety net? This I do not know.

Vaya con huevos


























(That'd be "go with eggs.")

doopsx3

#1. yes..me thinks the ST90 is slightly larger
#2. yes....I have converted my ST90 'Tard project to using the Ebay mono swinger for a CRF50


Major rework of engine mounting area to get a 50/70 Honda style engine to bolt up...I have reworked mine and currently have a Lifan 138 installed...was originally going to use a ATC 125m (estart) but did not due to excess weight of engine......I still have a stock CT90 roller if ya need anymore info.....

yes I travel with both my eggs daily

fatcaaat

If you have a regular ct70 frame to start with, you can use honda CL70 fork trees and install sl70 forks right in it with the 14" skinny wheel if you need. I have a set of the fork trees if you need em.

doopsx3

that could work well too......I used a ST90 cuz I could not find anyone with a good CT70 at the time...now I do not need......how ya doin 'caaat

mexicanyella

Just found on the honda-dax dot com site:

"A small role on stage in 1972 was for the ST90, the big brother of the dax which was also called "mighty dax" The ST90 was equiped with a strong 90cc engine also called "fat harry" and a bigger and stronger frame than the dax. It had 14" wheels and was only sold in the US. Unfortunately It didn't last long and after 3 years Honda stopped the production of the ST90."


Fatcaaat, I appreciate the offer and will keep it in mind. I'm thinking ahead of my budget and the current state of affairs in my garage on this ST/CT thing, but if you'd shoot me a PM when you get a chance I'd like to hear more about these CL trees.

z50 chopper

Mexicanyella you are thinking of doing somthing that looks like this I am guessing.

http://www.merrittmotorcyclesalvage....s/IMG_7713.JPG

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Jthomas7

I like

mexicanyella

Yeah, like that, only with a little more road-friendly tires, and maybe a homemade lowslung exhaust (making homemade exhaust pipes ees my favorite theeng).

I keep seeing these older 80cc MX bikes with blowed-up motors on Craigslist, making me envision a front end off a CR/RM/YZ/KX on there, but with some dual-sport or street tire. But I don't know the steering stem dimensions on 80cc MX bikes, or if they're even the same between themselves, and this CL triple-clamp thing sounds promising.

doopsx3

someday it will be done...I PROMISE!!!

http://www.planetminis.com/members/d...t-w-o-cans.jpg

z50 chopper

That is looking sweet doopsx3, any chance of you dropping other projects and working on this one? Also any chance of seeing how you mounted the rear swing arm and shock?

doopsx3

soon soon

z50 chopper

I wonder if ST90 triples and forks will fit on a CT70.

doopsx3

stem is too long...it has the latch in the center of the stem that allows you to fold the bars like a CT90

mexicanyella

Lookit that hotrod BBQ grill. Wow.

Hey, that bike's in the way. Can we get a shot of just the grill?
































That bike is looking cool, doopsx3; it's more modern-era trick-looking than what I'm envisioning for mine but it's a really cool idea you've got there.

doopsx3

yeah..wanted updated suspension and brakes...hoping the thing will be able to cruise down the freeway...I only live 12mi from work and it is basically a straight freeway shot......the grill is a BarB Q's Galore....3 burner w/rotissere and side burner all natural gas....11x5 foot L shaped counter with sink and under counter fridge...built it all myself

me likes it too