Re: Jawa Ultrasport build-o-roni

Maitland Of the Loin /

I bet you could replace the thyristor with a MOSFET and it would work forever

Re: Jawa Ultrasport build-o-roni

Just the thread I was looking for. Won this 207 jawa at rally of the corn. Got a 210 cyclinder on the way. Currently doing 30 with the ported 207 cyclinder and 14mm square puch intake to a 14 sha ported our to almost 15mm. Hope to gain some more mph with the 210 cyclinder. Also will have this bike at moped gp to race the stock class.

DBE28A0E-9D7B-45AE-9052-CF3079D5F8AD.jpeg

Re: Jawa Ultrasport build-o-roni

> Maitland Of the Loin Wrote:

> -------------------------------------------------------

> I bet you could replace the thyristor with a MOSFET and it would work

> forever

It’s got an inner rotor mzb ignition(power dynamo).

Re: Jawa Ultrasport build-o-roni

FUCKING FINALLY IT'S THE YEAR OF THE JAWA

I wanna compile this stuff, theres so much info for other makes, I think jawa just gets no love cuz nobody talks about it or know swhat's worth doing. Let's talk about the upgrades, anything that made a big difference, what kinda porting timing etc

jawajawajawajawajawajawajawajawajawajawa

Re: Jawa Ultrasport build-o-roni

This Vape is really a great thing,- as I installed it on my 3-speed JAWA 555 Pioneer it became a very reliable daily driver.

Re: Jawa Ultrasport build-o-roni

I sold my old Jawa years ago, wonder where it is now? butttt

Single speed motor

2-speed cylinder

mini roter off a kids dirt bike

ported intake with a hobbit intake bolted to the top of the cylinder, attached a moby sha intake to that

15 sha

Puch Boss pipe

it did about 40, but I was heading to Europe, I needed money and it was a cool guy top tank, so I sold it....

Re: Jawa Ultrasport build-o-roni

does the minirotor kids dirtbike thing just bolt on? is it the s5 ktm50/cobra clone?

Re: Jawa Ultrasport build-o-roni

> Born to be WillD Wrote:

> -------------------------------------------------------

> does the minirotor kids dirtbike thing just bolt on? is it the s5

> ktm50/cobra clone?

no, this was a rig you'd appreciate, just slam the inner part on the crank shaft, after that just use some long m5 bolts to get the rest of the ignition even with the rotor, time as needed from there

Re: Jawa Ultrasport build-o-roni

Maitland Of the Loin /

Yeah but power dynamo is not very Jawa now is it

upgrading the old tech on a Jawa to newer tech, now thats Jawa

> Daniel '' Wrote:

> -------------------------------------------------------

> > Maitland Of the Loin Wrote:

>

> > -------------------------------------------------------

>

> > I bet you could replace the thyristor with a MOSFET and it would work

>

> > forever

>

> It’s got an inner rotor mzb ignition(power dynamo).

Re: Jawa Ultrasport build-o-roni

Vape/mzb/powerdynamo is a Czech company though

Re: Jawa Ultrasport build-o-roni

Maitland Of the Loin /

Czech republic is not Jawa

.

.

.

.

Czechoslovakia is very Jawa

Re: Jawa Ultrasport build-o-roni

Here a couple pics of the 210 cyclinder that treats has. Ported the exhaust out and opened up the side transfer holes. Maybe once I get my 90° flex shaft dremal I’ll open the rest up but for now looks good enough.

0C249D1C-F7DE-45FB-8EA6-349AAB4CA84D.jpeg
20581304-9477-4098-8E56-1CBFC6AAD5F5.jpeg

Re: Jawa Ultrasport build-o-roni

no groms no blasters /

We owe it to our divided brothers and to the great President Liberator TG Masaryk and Dr. Woodrow Wilson to keep the dream of a united Czechoslovakia alive by being living examples of keeping Jawa motors united with Jawa frames.

Pravda vítězí! Pravda víťazí! Truth prevails!

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