1974 Daihatsu 'Hallo'

[timmo1]

Hi there- I'm Tim and I've just purchased 1974 Daihatsu 'Hallo'...never heard of it? That's because only a couple of thousand were made- Most stayed in Japan but a few made it to the USA and some down to where I live, in New Zealand. They actually came in two models- A 50cc two stroke and an electric powered model.

It's a three-wheel scooter with the two wheels at the back sitting on a subframe which also holds the engine. The front is similar to other scooters of the period and tilts when you corner (while the rear section stays flat).



Anyway, long story short- I'm wondering if anyone can give ANY help in the form of photos, diagrams, compatible parts etc.
My one had a ring failure 10 years ago and has scored the top of the piston- I'm hoping to resurrect the ol' girl and get it going again However, finding parts may be difficult and the lack of reference material might make things hard as well (I've been hammering Google since I got it to try and find information)

I have seen a couple of old Yahoo group posts from the USA talking about the models (with one gentlemen alluding to the fact he had a service manual for one, hurrah!) so thought I might as well make this forum my base for the rebuild
Thanks in advance

[conorabc]

You'd probably just want to swap a GY6 into it. A lot less guess work.

[beachbum]

I hope you find what you're looking for and get that running again....very unique and just plain cool.

[trailheadmike]

I just did a little research, and it looks like you might try contacting someone here:

autos.groups.yahoo.com/group/Ariel/

You might find another owner there to speak with. Its an offshoot for three wheelers, including your scoot specifically, started by someone at Moped Army. Those guys really know their stuff.

[timmo1]

Feb 25, 2013 18:15:08 GMT -5 trailheadmike said:

I just did a little research, and it looks like you might try contacting someone here:

autos.groups.yahoo.com/group/Ariel/

You might find another owner there to speak with. Its an offshoot for three wheelers, including your scoot specifically, started by someone at Moped Army. Those guys really know their stuff.

Thanks Mike- That's the group I was referring to (and have just joined)- The posts from the guy that has copies of the manuals (for the electric version) are from a few years ago but it's possible some of the users that have copies are still active...So I'll see if that leads to anything..

A google search also brought up a Taiwanese company that lists pistons and rings for this engine- I contacted them but they finished manufacturing 8 years ago and no longer stock any

I'm waiting to hear back from the local motorcycle shop for their ideas but it may be possible to search for a similar piston and modify to suit. From initial conversations, the piston diameter is different from more modern scooters....fingers crossed I can find something.

[timmo1]

Feb 25, 2013 18:03:53 GMT -5 conorabc said:

You'd probably just want to swap a GY6 into it. A lot less guess work.

Repowering it is an option, but more of a last resort, as it would require quite a bit of modification to the subframe and loose the originality

[timmo1]

Also, does anyone know of any other 2 stroke engines with a 41.00mm dia piston?
The measurements are:

Piston Diameter: 41mm
Total Piston height: 50mm
Pin diameter: 12mm
Squash area height: 3mm
Pin to piston top: 26mm
Pin to top of skirt: 23mm
Window width: 25mm
Window height: 15mm

[oldbikerider]

You might try calling Wiseco after you take your dimensions, they might have a match you can substitute. www.wiseco.com/CustomerService.aspx

[motts]

get2itparts.com/download/pistongrid.pdf

This is a great chart. I am a dealer for these guys. Let me know if you need anything.