“Dirt Bike” made from Z750LTD Y1

[Michael]

Hi Lonesome Twins,

just to let you know, I have a new project 😉
A “Dirt Bike” based on Z750LTD Y1.
Several mods and more to come !
But … I want to keep it as simple and cheap as possible.
No intention to have it road legal nor TÜV/MOT approved!!!
It is just for fun in “my garden” 😉
18″ rear wheel and brake of Z400, 1980.
Longer, red Marzocchi rear shocks are already here, but needs some adjustment in the mounting diameters top and bottom.
Got some “cross” tires on that.
It will be my 14 years old sons toy, and mine as well ;-)))
Motor and electric will come from a close to original Y1.
Should be finished shortly, mid of April at the latest !

Cheers, Michael

[Michael]

more photos:

transmission ratio of final drive will be 16-40.
Matching rear sprocket arrived yesterday 😉

[Michael]

exhaust will be an old, scratched, rusty and worn LTD one, no additional cost and work in a scrambler/cross style exhaust

crash bars will be mounted to protect drivers legs 😉

battery and electric starter should be onboard
no lights, no winkers, no mirrors, etc.

Cross mudguards are ordered and will arrive the next days.

[Tango]

Hey I like it!
Looks Good mate.

[Michael]

Thank you guys 😉

Today the mudguards arrived and I just fixed them with cable strips without any further modification to have a first look.
The 4 cm longer Marzocchi rear shocks needs modification and have to be mounted. The front is looking good, the rear still needs some improvement 😉

Have a look 😉

Cheers, Michael

[Tango]

Looks Good to me, apart from the snow. 😮

[Kaptainkwak]

That’s gonna be a mean piece of riding machine

[Michael]

Hi guys,

couldn’t wait any longer 🙂
Modified the rear shocks and mounted them at -2°C.

Much better now, both ways :-)))
Curiosity is satisfied and bike looks better now 😉

Happy to be back in the warm home office, sitting in front of my PC, having fire in the fire place.

Cheers, Michael

[Tango]

Wow that looks awesome!

[Kaptainkwak]

WOWEEEEEEEE.

Are you keeping the green and yellow? I quite like it that way too

[Michael]

Hi guys,

I am astonished myself how it came out today ;-)))
I am very pleased !!!

Will keep the yellow mudguards.
It is a kind of sign where I can find my son riding on the peddock 😉
In the end it is flexible plastic, hard to paint !
Fuel tank was painted first time in green color, that may be changed to yellow as well.

Front fairing (instead of head light) is the non modified cover of a “10 liter white wall paint bucket”. By accident it is green 😉

Wonna have as less work with this bike as possible. It is very likely that colors will stay as is.
Maybe the wheels will get a full black paint.
Tires are looking better/wider on a black rim/wheel 😉

It is a “Built to purpose” and if it is laying on the ground the first time, color is a minor issue 😉

Cheers, Michael

[Michael]

Hi guys,

mounted the rear brake holder and actuator / pedal. FINISHED
Lower rear shock mounting modified again. FINISHED
Upper rear shock mounting needs some spacers.
Found a spring that holds the side stand either up or down. Not a final solution but better than the “just hanging down” sidestand.
Found a front master brake cylinder of a B3/B4 that is working and a long brake line, hope it is long enough in final mounting position 🙂
Otherwise I have to use the “distributor” piece at lower tree to use two shorter brake lines.

Cheers, Michael

[Michael]

Ok, had some time to work on the Dirtbike.
Cut of the lower rear holders (behind rear shocks) and fixed the rear mudguard.

Matching length front brake line, a modified stock airbox, 40 teeth rear sprocket and some other things mounted.

Edge of rear rim was silver and is now sprayed in black (in real bad quality), but I had to see it that way ;-)))

Grabbed right hand side exhaust and preliminary fixed it – for those who know me, of course – with cable strips / ties 🙂
That exhaust, ok, well, can be, will be, because of no additional work to be done !

Will do some further things tomorrow.

Cheers, Michael

[Tango]

This is looking like a whole load of fun!

[Michael]

Hi Tango,

it is fun to prepare a bike just for it’s purpose without restrictions by TÜV / MOT 🙂

Made some progress today at the front.
– front mudguard is fixed now
– plastic side covers attached
– optimised spacing of brake disc and caliper
– fitted an old, already scratched but fully working front master brake cylinder with adjustable lever of a Honda VFR750 incl. the old brake line.
– front wheel also painted black
– sanded the side of the “spokes” to appear silver again. This is what I call “Star design” :-)))

Have a look:

Cheers, Michael

[Author]

Posts