Project KH 125

[Slow and wobbly]

Had a thread going regarding this but it was lost in the site crash so here goes again.
Bought this for $20 off e-bay

Flea-bay bargain

74_1_b.JPG (41.28 KiB) Viewed 4913 times

Then came across this one for $150. A runner. Complete and unmolested, just well weathered.
Have been ripping bits and pieces apart cleaning, painting, polishing, fixing and replacing. Until now it is looking a bit more like this.
Engine has been cleaned up and painted, just need some new machine screws for the cases before I put it back in.
More rubbing back and paint required on the tank and covers. Total cost so far just under $320.

Still need-
Rear shocks
Tyres
Chain and sprockets
New lights and switchgear
Battery
Front brake caliper

[aggerz]

jeez mate, bloody nice effort so far.. good job, keep us updated..

[Slow and wobbly]

Engine back together today and re-installed. Whiff of fuel and ringa ding ding. With any luck it should be on the road by xmas. So far its cost less than and is way cooler than any pocket bike
Cant wait to piss off those rusty rear shocks. The kickstart may either get cleaned up or tossed for a new one. The rusty bits realy show up in the pics

[Slow and wobbly]

Now that this thing is turning into a living and breathing restoration it looks like I am going to put it back on the road - club reg hopefully. Seems simple. Aftermarket lights and switchblocks come easily. Wiring will be a little fiddly but another great learning experience. I am stuck though on speedo and tacho, the originals are cactus. Does anyone know if there was some sort of standard gearing for both the speedo drive to speedo, and similar for the tacho? If so is it possible to purchase Universal fit gauges? Will hopefully get to peruse some sort of dealer catalogue in the next week, so if I find an answer I will put it up.

[Slow and wobbly]

This is amusing. There is a reserve posted on this thing!
Three interesting things I have gleaned from the photographs though;
1. TZR 250 hydraulic brakes will fit up
2. The rearset configuration with rear brake linkage
3. A visual of how I imagined I might do the seat - not impressed with this and will do better

Oh and hows the exhaust? Why would it require such length? I know that expansion chamber design is somewhat of an artform but why is there a need to have the length in the pipe?
And clip-ons look way cooler than those flat bars

[aardvark]

Oh and hows the exhaust? Why would it require such length? I know that expansion chamber design is somewhat of an artform but why is there a need to have the length in the pipe?

When it comes to two strokes, the entire exhaust is a bit of a black magic. I suppose it depends if the owner has done any testing on it. I see it has a race plate on the front, so I assume the owner was looking for more power... somewhere.

[Neka79]

cant make up ur mind wobbles??

mate... it would be an interesting "hills scratcher" since the zx9r is gunna be a slowly rebuilt track hack!!

[Gosling1]

.....Oh and hows the exhaust? Why would it require such length? I know that expansion chamber design is somewhat of an artform but why is there a need to have the length in the pipe?....

Back in the good old days of unmuffled strokers, that pipe would have had a short length of 15-20mm pipe at the end called a 'stinger'. No muffler required.

The entire philosophy and design of a good stroker exhaust is based on the 'tuned length' of the system. (4 strokes also have tuned length issues, but not the same as strokers)

That system pictured is just bodgy. The header pipe is far too long (looks like a stocker), and that means everything behind it is just too long as well. The muffler hangin' off the end is there for sound examinations only........it looks like a small-capacity MX muffler that has just been tacked on the end ?

[RichB]

I think it looks ridiculous becuase its been ripped off another bike. There's plenty of 2 stroke software out there, you can make or have made a custom pipe for any 2 stroke engine based on the specifics you put in and the dimensions it calculates for you. I was going to make a tuned pipe for the whipper snipper! But who could really be farked. I found this site was pretty interesting http://macdizzy.com/2stroke.htm. Nice resto job btw, it looks great!

[frogger_nude]

hi, slow and wobbly.

How's the parts search going? I've got a few bits and pieces if your looking for stuff let me know.

Scotty

[brendanzxr]

Great looking project going on mate, keep it up.

[MiG]

This is amusing. There is a reserve posted on this thing!
Three interesting things I have gleaned from the photographs though;
1. TZR 250 hydraulic brakes will fit up

Oh and hows the exhaust? Why would it require such length? I know that expansion chamber design is somewhat of an artform but why is there a need to have the length in the pipe?
And clip-ons look way cooler than those flat bars

Do you mean TZ250? Because TZ250s go back a lot longer than TZR250s. The TZR only came out in 1986 or so and the caliper looks nothing like that, it's a four piston caliper thats interchangeable with the 99-02 R1/R6 caliper.
The length of the exhaust is dependent on what revs you want it to work at. For low revving engines you need long chambers.

[Slow and wobbly]

Righto then. Have been doing some contemplation recently - read as; drinking beer in the garage.
The 125 is going to be developed into a period racer. No idea of the rules and regs as yet but since this will be easier than a road going restoration then that is what it shall be.

[aardvark]

No idea of the rules and regs as yet but since this will be easier than a road going restoration then that is what it shall be.

Good idea old boy.

The rules are pretty simple.

-Modificiations to major components are allowed, providing such modifications are visually indistinguishable fomr modification proven to have been used in the period.
- Major components include:
Engine and gearbox external casings
Frames
Swingarms
Brakes
Forks and fork yokes
Carbs
- All lights etc to be removed

Then all the normal lockwiring etc.

That should be enough to get you started.

[Nanna10r]

Good Stuff fella's. The "uh hem" winners of the Northern Rivers (Buckets) 2 hour endurance last week was a bombed cb175 & a superlite 2 stroke 100cc Honda. It also won Division 2 on the day. Only 2 stroke there besides My Waki. Which took 2nd by half a wheel in Division 1 Motolites. Go the Smokers.
Cheers Nanna