Amstar Nostalgia 49
 

I don't have uses for a 50cc but this looks fun.

https://www.youtube.com/watch?v=fqhiw_vFCVs

That engine can be easily upgraded with a big bore kit or replaced with a larger engine up to I think 190cc.

There's a pitbike on my local CL with a 150cc horizontal motor and an oil cooler right now. It would be the perfect donor.

I'm really liking the other 'retro' they offer.

https://youtu.be/r_n1LdPpFOI

I know that it's based on the Honda Cub. What's interesting is that it also has the two holes forward of the shocks that aren't being used. These also show up on the conversions to electric that are offered now. Here's an example posted by Imapdog;
http://www.chinariders.net/showthrea...pasties&page=3

So that begs the question; are these Honda Cub frames that have been converted or did they copy the frame so much that they included holes that don't get used?

There's a better look at the bike at Extreme. I haven't found where it's offered anywhere else, though.

https://www.extrememotorsales.com/xc...gal-retro.html

I'm real curious as to what that ginormous speedo looks like. None of the videos nor the website shows what it looks like on either bike.

It’s really hard to see details in those pictures ,but I am not totally convinced it is cub based and not ct90 based .The main “difference” between the two frames ,is the gas tank area ,a cub has a gas tank that fits completely inside the frame under the seat ,you lift the seat and the tank drops inside the frame ,while a trail 90 frame is shorter under the seat area and has an external tank under the seat .There are certainly other differences ,but looking at the pictures it does appear to be a cub clone but it is hard to see with my ancient eyes how the tank area has been accomplished .I have a few of both bikes here and can get some pics if you would like as I am moving them this week .

I could be wrong but I was basing it upon some of the custom cubs I've seen on the web. The two holes in front of the shock are showing up on these. Here's another example;

http://www.bikeexif.com/honda-cub-surfboard

But even that one is a Chinese clone.

Of course, Honda might have used the frame elsewhere as I've seen Cubs that had different frames.

BTW, Boom offers an example of the bike in the first post. It doesn't have as many spokes and has a different color scheme. It came up here;

http://www.chinariders.net/showthrea...highlight=cl90

It's challenging to definitively identify the bike based on the pictures, and I appreciate your attention to detail regarding the gas tank area. Your expertise with both Cubs and Trail 90s will undoubtedly provide valuable insights. If you could share some pictures of your bikes during the move, it would be immensely helpful for a more accurate comparison. Your firsthand experience will likely shed light on the subtle differences between the frames, ultimately resolving the uncertainty. Looking forward to seeing the comparison photos, and thanks for sharing your knowledge.

Sorry ,but I no longer have any cubs ,this thread is 6 years old and I have not seen anything more about the bikes the thread was asking about .
If it helps ,google search a trail 90 gas tank and a cub gas tank ,you will find the trail 90 tank is a body coloured unit ,while the cub tank is black and sits inside a part of the cubs body and frame and totally unseen unless you flip the seat to fill it ,and from a distance the areas under the seat of both bikes visually resemble each other .
Hope that helps a little .