1st Kart rebuild / getting started / what is this frame?

G’day all,
Pick up this rolling frame (basically no motor or seat) recently as a bit of a project for my son.

I have stripped it down and started replacing bearings and bolts where needed, but could anyone please help identify this chassis?
I have spent many hours trying to find another identical frame but nothing has come up with an identical shape frame, especially the lower steering column brace. There is a 5 digit number on this brace “9 10 15” I’m not sure if this is a reference to 2015? I would have thought it is older than that. There are no other tags or name plates that I have found. I don’t believe the paint is original, it looks like it was put on with a brush in places.

People on facebook have said its a Birel but that maybe only based on the colour, no birel I have found has the same chassis.

Not a Birel I don’t believe - cassette support and steering yoke don’t resemble the brand. Nor the long front clip. Could be wrong on that though.

The shape of the side nerfs dates it as pre-2005 probably.

1 Like

Thanks Dan, I thought it might be fairly old too. Very strange that I can’t find any others like it!

For anyone interested in future, I emailed Swiss Hutless after seeing a few similar frames.

They confirmed it looks like one of theirs but still could not confirm what year/model. Potentially 1980’s!

1 Like

I don’t believe swiss hutless used the C style front stub axle mounts until the 97 homologation, before that the bearings where in the chassis.

The lower steering column brace definitely looks like the swiss hutless but they normally had swiss hutless stamped on them in the 90s. Also the numbers normally had a letter at the start which was the year of manufacture.

Do you have a photo of the components?

hi guys,
I have been slowly getting this thing ready for a first drive. Still have not identified exactly what this frame was, hopefully these photos help out.
Will be using a 7.5hp Robin motor and a torque converter setup. Have flipped the axle 180deg so the drive and brakes are on opposite sides, cnc machine’d a new brake caliper bracket and welded up a frame for the motor to sit on. Trying not to modify the chassis or drill holes etc so it remains original. Hopefully it doesn’t lift the front wheels when planting the throttle as the motor sits a bit high!

What made you decide to not run inboard drive with the engine? Not enough clearance with the seat?

Yea spot on, plus (from memory) I couldn’t fit the size sprocket I wanted to run if mounting inboard. Its running a 65t #35 sprocket to limit the top speed to about 30kmh. My son is only 6 years old but has been thrashing a hotted-up 12v style electric jeep since just before he turned 2! See how he goes learning to use the brakes soon