My other 90 project.

[RDH/86200X]

What is it that is so fun about these little bikes. This one is a 1977 atc90 for now. If everything goes as planned I will locate an aftermarket frame and other goodies. So far I have a suspension front end, a big al's pull stat handle and extended hubs to go to 4x110 bolt pattern. I need to find some way to mount the front fender and the head light.

[shortline10]

Looks good , I have several aftermarket frames I might sell if you need one also tons of bolt on goodies .

[kb0nly]

These smaller trikes are addictive... I got done on my 90 and then did two more for others... They are fun!

[C.J]

Good start man!! I wish i could finish mine up one of these days,,,,,

[RDH/86200X]

Shortline, I would be interested in a frame but I won't be able to do anything in that area till after the first of the year. I will also be looking for an oil cooler and a vented dip stick. Other things i'm going to do on this one include, 53-54 mm bore, performance cam and springs, port and polish the head, a bigger carb/ intake, and a new exhaust/ old aftermarket one.

[shortline10]

I believe I have everything on your wish list except for the vented dipstick but by January of next year I might have a few of those as well :lol: .




Shortline, I would be interested in a frame but I won't be able to do anything in that area till after the first of the year. I will also be looking for an oil cooler and a vented dip stick. Other things i'm going to do on this one include, 53-54 mm bore, performance cam and springs, port and polish the head, a bigger carb/ intake, and a new exhaust/ old aftermarket one.

[C.J]

I mod the stock rocker pin plates to be able to run an oil cooler
Work pretty good too!!

[RDH/86200X]

Quick question. Did either the stock atc90 or atc110 rear axle ever not have a taper to it.

[90guy]

Uh oh!! I smell a race coming on! Looking good buddy once finished we should line them up!

[RDH/86200X]

If I am still in the states we will. Reason is that if nothing changes I will be going to portugal for a year in april.

[90guy]

Well that just takes the fun out of it! Lol little change of scenery less trikes to buy there! Lol

[RDH/86200X]

It just postpones things for a little while. I will be back here eventually. I have made to many friends not to come back. On a really sad note I wont be able to bring my trikes with me, I wont even be able to bring my car.

[RDH/86200X]

Updates to come in the next couple of weeks. Thank you again shortline10 for selling me the bandito. I also have gotten a chrome pull start cover and a Big Al's chain tensioner off ebay. It will look real nice with my bapp pull start handle and suspension front end. I will get pics up when the parts get in.

[Joseph Farrow]

Good Deal. Keep us posted on the progress.

[RDH/86200X]

Here are pics of the frame I got from Shortline, the chrome pull start cover and the big al's chain tensioner that I found on ebay. I hope to get some more done this week but the weather will determin that.

[90guy]

Looking good can't wait to see it all start coming together!

[RDH/86200X]

So I'm thinking about getting a pit bike engine for this project while I build my Honda motor. I have a few questions. All the motors I'm seeing don't have the engine mount on the head. Will this be a problem? What brands should I look at. I know lifan and piranha are good but what about gpx moto or?

Thank you.
Ryan.

[tblumer]

They won't jive up without fabbing some sort of custom mount. The pit bike engines are Crf50 style cases compared to the 90 style cases. DrATV does sell a lower mount adapter for that swap

[RDH/86200X]

Thank you. I found the mount and it shouldn't be to hard to make something for the front.

[tblumer]

I bought that lower mount a while back with the intention of putting a Lifan 140 into my Joker frame while I get the original 90 motor rebuilt. Still haven't gotten around to it. I'll have to watch your build to see how it works out.

[RDH/86200X]

10 inch rear rims and a sudco 22mm to 24mm intake on its way. :Bounce Oh yeah and a couple nos pull start gaskets.

Im looking for a smaller rear sprocket as well. I had found a 35 tooth sprocket but then got a message saying that they no longer had it available.

[90guy]

10 inch rear rims and a sudco 22mm to 24mm intake on its way. :Bounce Oh yeah and a couple nos pull start gaskets.

Im looking for a smaller rear sprocket as well. I had found a 35 tooth sprocket but then got a message saying that they no longer had it available.
Uh OH! Getting a little more performance with a intake! What do you plan on running for a carb vm22? I need to find a smaller rear sprocket as well. Have a 49 tooth aluminum sprocket and just not a whole lot of top end but boy does it get there fast!

[RDH/86200X]

Yeah I found a brand new mikuni vm22 for 60 that I plan on buying. I will be going 3mm over on the 110 till I can find a big bore jug. Gonna have the head port matched and cleaned up. Also keaping my eye out for a stroker crank and all the sl90 goodies.

[shortline10]

I have a few NOS strokers in stock when your ready also can help you out on the other parts .
These are my favorite build for sure :beer



Yeah I found a brand new mikuni vm22 for 60 that I plan on buying. I will be going 3mm over on the 110 till I can find a big bore jug. Gonna have the head port matched and cleaned up. Also keaping my eye out for a stroker crank and all the sl90 goodies.

[Jwheeler]

Hey, I maybe able to help you with your needs also. With aftermarket 90 parts. PM me with your needs. JW

[RDH/86200X]

Got my intake and the nos pull start gaskets in the mail today. Also will be getting a 35 tooth rear sprocket in the next couple weeks.

[C.J]

Yeah I found a brand new mikuni vm22 for 60 that I plan on buying. I will be going 3mm over on the 110 till I can find a big bore jug. Gonna have the head port matched and cleaned up. Also keaping my eye out for a stroker crank and all the sl90 goodies.

Be careful when buying a VM series carb that cheap. I bought what I thought was a VM24 for mine for 65 and it ended up being a hose mount style 28mm carb. Now I've got 3 of those *facepalm*

That Sudco intake is a pretty nice piece for a pretty nice price! I'm working on cleaning the inside of mine up and getting the casting line smooth. Biggest problem with it though is that you've gotta put a stud in the pull start side of the head cause you can't fit a bolt into the hole.

[RDH/86200X]

Got my wheels in a little while ago and a 55 tooth rear sprocket.
I'm not sure at the moment if I will use these rims on this build or another project. Should I go with the 10's or run 8's all around. It will have an 8 inch rim up front anyways.

[C.J]

I say 8" all the way around! If you had a 10" front it would be a different story lol

Why did you go with a 55 tooth rear sprocket?

[RDH/86200X]

Why did you go with a 55 tooth rear sprocket?

It was cheap as were the rims.