[semlin]

you need to check this out




all joking aside, this is a serious thread for collecting tech on small SOHC honda trailbikes. Things like parts links, info links and tech discussions. I have a 1965 CT200, a 1973 CT90 and a 1983 CT70. Feel free to post up content or questions about these and similar bikes.

[raydouble]

holy crap this is sweeeeeeeeeeeeeeeet

[semlin]

starting with a place to download a ct90 shop manual

RepairManualClub.com > Honda S90-CL90-C90-CD90-CT90 Shop Manual

[semlin]

and wiring diagrams

WIRING DIAGRAMS

[semlin]

link to replacement rectifier for a honda ct90 equivalent to the ones selling on ebay but much cheaper.

http://search.digikey.com/scripts/Dk...=GBPC3502DI-ND

tech specs

== Diodes ==

[yooper]

Parts and info sources

honda mini trail page

DrATV OPERATES HERE

[semlin]

source for oem style wire bullet and spade connectors and loom wrap and grommets.

Vintage Connections: OEM-Style Connectors for Japanese Motorcycles

edit: another source and a better price

http://trailtech.net/crimp_kit.html

[yooper]

Very nice old Honda gallery site with some excellent year/model info.

Honda Gallery


I found out my ST90 is a K1 model and only came in yellow that year.

Honda Trailsport ST90 Motorcycles

[yooper]

I found a source for manuals, reprints of the actual factory manuals I think.

Go to World of Powersports 800-432-8937 and download their "Parts Numbers of Honda Manuals", which is a PDF, and write down the part numbers for your service manual and owner's manual. Then go to their "Order by Part #" page and enter those numbers.

Shipping is kinda steep but my factory service manual is only $6.03

[Hugh Heifer]

Originally Posted by semlin

you need to check this out




all joking aside, this is a serious thread for collecting tech on small SOHC honda trailbikes. Things like parts links, info links and tech discussions. I have a 1965 CT200, a 1973 CT90 and a 1983 CT70. Feel free to post up content or questions about these and similar bikes.

I fall for it every time. I still suck - but I suck less!

[dieseldog]

Remember the shocks I installed on the '79 CT90 during TUTaPII? Well, I just installed another identical set on the '70 CT90 and got the very same positive result. With my weight, these new shocks (purchased off eBay) have been a perfect replacement for tired OEM shocks. Here's a link: eBay Motors: NEW HONDA CT70 CHROME REAR SHOCKS (CT70, CT90) (item 370080418398 end time Aug-31-08 11:32:23 PDT)



Sean, I think that since these work on the CT70's, they'll also work on the ST90 too. I did have to knock out the metal section that they have installed in the rubber bushing on the upper end; however, that was no problem (much easier with your equipment though.)

[thorvald]

for a site full of minibike geeks (kind of low on CT90 info) try Planet Minis

theres a vintage section, and a for sale section, a few guys on there have some nice z50/monkey builds, replicas.

Razzo Moto - Honda Mini Trail Restorations, Parts has some nice bikes on it.

Minigunz Performance

downloadable owners manual for ct70 The Honda CT70 Mini Trail Bike Website - Honda CT 70 Web Board, Part Guide & Help

[jonesy54]

Vintage Honda Elsinore CR125/CR250 and MR50 parts | QA50 parts | Z50 parts | CT70 parts | SL70 parts | XL70 parts | XR75 parts | XR80 parts | Seat Foam

[yooper]

found another site

Honda Trail CT90 Website Honda CT90 Yearbook


Here's that manual again all on one page

Honda Trail CT90 Website Honda 90 Shop Repair Manual for Honda S90, CL90L, C90, CL90, CD90 & CT90


Online parts microfiche with lots of available parts for sale: Babbitts Sports Center | Arctic Cat OEM Parts | Can-Am (Bombardier) OEM Parts | Honda OEM Parts | Kawasaki OEM Parts | Polaris OEM Parts | Sea-Doo OEM Parts | Ski-Doo OEM Parts | Suzuki OEM Parts | Yamaha OEM Parts


CT90K2 (1970) owner's manual

online: Honda Trail CT90 Website Honda Trail 90 CT90 K2 Owner’s Manual

full res download version: http://www.hondatrail90.hondagl.com/...90k2manual.zip

[semlin]

another link for distinguishing ct90 models

Honda Motorcycles

[thorvald]

for auxillary tanks ct90 and ct110, dr. atv has them:
*SUB TANK CT90/110 (S)

[Degnol]

What a great and timely thread! I just scored a pretty nice '74 z50 off Craig's List. New tires, complete(except for the headlight bucket assembly) and it starts first kick......$500

Had to tell someone


Ed

[thorvald]

Originally Posted by Degnol

What a great and timely thread! I just scored a pretty nice '74 z50 off Craig's List. New tires, complete(except for the headlight bucket assembly) and it starts first kick......$500

Had to tell someone


Ed

sweet, post up some pics

is it for you or your kids?

[Degnol]

Originally Posted by thorvald

sweet, post up some pics

is it for you or your kids?

It is for my fat ass

Pics tonight......raining big here.

[semlin]

my daughter needs a z50, but mrs semlin just cut off the sparkplug acquisition budget

[Degnol]

It is dirty(had to ride it yesterday) but generally complete. Headlight is not correct and the footpegs are aftermarket, seat needs some serious attention, but it runs and has new tires
Good Winter project
In the pics it looks like the tank is all beat-to-shit, but those are some decals someone put on.

Ed

[semlin]

that is a really nice one. all the older ones I have seen around here are red and have less chrome.

[Degnol]

In '74(according to the link you posted) they were only available in two colors "Candy Sapphire Blue and Candy Topaz ", so if you know your colors, that is a good indication of what year it was produced.
Any good way to get dents out of a gas tank? I hate to just bondo them.


Ed

[semlin]

Originally Posted by Degnol

In '74(according to the link you posted) they were only available in two colors "Candy Sapphire Blue and Candy Topaz ", so if you know your colors, that is a good indication of what year it was produced.
Any good way to get dents out of a gas tank? I hate to just bondo them.


Ed

depending on the dent, i wonder if you could seal it up tight and use compressed air to pop it out? other than that, maybe those suction cup dent pullers?

[thorvald]

Looks nice, much nicer than the two z50 projects I have.
As far as dents go, both of mine are dented somewhat, the less dented one has a lot of rust inside. I was keeping an eye out on ebay for a better tank, but it seems like decent ones go for quite a bit.

Are the dents from the handlebars? If so, might want to make sure the stop is working good before fixing it.

Now lets see a pic of you riding it

I'll find one of me on my China monkey clone if you do.

[45Kevin]

The guys I know that fix tanks all have special dollys they made out of ball bearings (some rather large) welded to bent rod that they insert through the gas filler hole and use with a hammer.

I also know some guys that just cut out the dented area and straighten it on a bench and then weld the piece back in.

Good thread Semilin. I have a '70 CT90, a '65 CA77 and a '74 MT250. I also have several other brand of similar vintage.

[semlin]

source for high quality replacement seat covers

Motorcycle Parts

[thorvald]

this place has some more ct90 info

The Honda CT-90 Page

[Degnol]

Just scored a muffler from these guys.....very nice to deal with


Honda Mini Trails Honda mini bikes and Honda Z50 Honda 50 Honda Minitrail NOS Parts and services Kitaco and Takegawa performance parts.

[yooper]

Another parts source, has a slightly different collection of available stuff.

Vintage NOS Honda Motorcycle Parts from RetroBikes