New stuff

 

..after the good experience with the supersprox on the Zephyr I decided to turn over to the same model for my Yamaha Tenere. Anyway the TV program nowadays is so boring that you need some toys for the evening!!  :o)

5x17 rear wheel

 

Starting a conversion of the rear wheel from 4x17 to 5x17. Unfortunately the Zephyr750 has a different rear axle. It's 17mm instead of 20mm(usual). Therefore the question is either changing the bearing of the wheel and keep the axle or changing the axle and keep the bearing of the new wheel?

Here you can see the excenter of a 750(right) and an 1100 model(left).

17/46!!

1. Mai in Germany, sunny, warm weather and everybody is off  with the family. Good choice to change the front sprocket in the sun! 

Last Autumn I started working on a modification concerning the gear ratio. The original was 15/40 and I changed it into 16/46. (man that is short!!) The reason for that was a planed tour in the alpes with some buddies of mine. Their machines are a lot stronger and new!! So I had to compensate the difference in power by a better performance. I learned that a bigger frontsprocket is good for a smooth chain movement and that an extreme short ratio is only suitable for "hilly" layout(like the alpes). Although the performance with it is a lot of fun, it's also a bit "nervy" to rev so high permanently.

Because I live on the countryside with lots of winding streets in front of my house I ordered the next bigger thing. Now the ratio is 17/46 and that!! is a well choosen compromise between engine performance, revs and torque. Now I am right in the middle between the "stock" and the "supershort" ratio. With the again bigger frontsprocket I have the impression that the drivetrain works even better, but that might be subjective because I am so satisfied with the modification. Guys - a modification that I can highly recommend - a well choosen investement in better driveability!  :o)

#gerrimoto #zephyr750 #zephyr #kawasaki #vintagekawasaki #zephyrtuning

The "Litauen" pavillon on the former Expo 2000 area!

...presently the job has brought me to Hannover in the North of Germany. I took some photos in the former Expo 2000 Park, but unfortunately the proposted developement of the buildings as part of a new "Gewerbegebiet" didn't succeed. Most of the Pavillons are lost or even demounted. Instead of  busy lifestyle people you find a lot of RC - Car enthusiast who enjoy the huge carfree allees!! Sad somehow!!

First "almost sunshine @moderate temperatures!

ZR - 7 exhaust

Tiny Z650

conversion is going ahead - black frontrim, new 

positioning of brake hoses, repositioning of electric!

Thank you ebay!!

...yesss folks it's a KERKER!! I was lucky in prechristmas ebay hunting! Somebody sold this sweet little piece of aluminium and stainless steel as a barnfind!

..the actual REVLIST!

....back from first Test with the new gear ratio 1:2,875! Mates, it's shorter than I thought(!), but suits perfect for narrow and winding streets and hairpins. I would guess that the topspeed has reduced around 20-25km/h. Nothing you can use for a journey, but the whole bike feels much more "light" and you never have the feeling that the engine is really working hard.

It reves very easy and also changing gears is now as smooth as it never was before. i.e. When you approach to a turn in higher speed, shift down and accelerate in in the middle of it, you have the feeling that it has less influence on the drivetrain. No bucking at all - very comfortable.

The actual speeds in comparison to revs in 5th gear are: 80kmh - 4400Umin, 100kmh - 5500Umin, 120kmh - 6600Umin, 140kmh - 7700Umin, 160kmh - 8800Umin. As you see, quite short, but exciting to drive. Of course you always have to keep in mind that a 750 aircooled carburetor engine is not as "hot" as a modern 750 watercooled injection.

The next useful thing might be a Dynojet Stage 1 Kit, which should give a better performance at midrevs. Let's see!!

 

......chains and pinions!

...selling my good old Lady in red gave me some problems in the past months. There was always something the people had to complain about. Wether it was the seat, or the black rims, or the exhaust, or the colour and so on, at least I put together a puzzle from all my machines and sold it for a reasonable prize. With the restparts remaining I started to puzzle again and build a cycle which is rather similar to the bike I originally wanted to sell.

The old chainset was rather rotten and I started to think about a new solution with a "supersprox" pinion in the back, a golden chain(always wanted that) and a different gear ratio. After some thinking and also talking to my favourite mechanic Herbert (http://www.hm-moto.de)   I decided to change the original 15-40 into a 16-46. The area around here in the eifel is a hilly one with curvy streets and less options for topspeed. So my aim was to have a better drivability in turns and hairpins.

You might ask "why a 16 in the front?" but after some  thinking about what happens in the drivetrain I wanted to achieve that the chain has a smoother radius while rotating, which gives you less influence on the swingarm and suspension.  -Okay! -  I know a Zephyr is not a racebike, but I was hoping to have a more comfortable drive. Here are some pictures before testdrive this afternoon.

tiny Z650 - beginning conversion

...trotz knapper Zeit geht es natürlich in der Zwischenzeit schon weiter!
..although we don`t have much time actually things are going on!

 

 

....tiny Z650

..es gibt Gelegenheiten, die darf man sich nicht entgehen lassen. Zum Beispiel wenn jemand entnervt seinen Oldie verkauft, weil was Neues in die Garage muss -  da haben wir gerne zugegriffen....!!

Kotflügel GFK | Frontfender GFK

Wegen einiger Anfragen, hier schon mal die Preise für die Kotflügel: GFK in weiß oder schwarz - 59,00€, Carbon 89,00€.
Versand innerhalb von Deutschland 6,90€. Versand innerhalb von Europa sowie weltweit auf Anfrage. Wir bemühen uns dafür den günstigsten Anbieter herauszufinden. Anmerkung: Die gezeigten Kotflügel sind NICHT lackiert, sondern so wie sie aus der Form kamen montiert worden. Wie man sehen kann, gute Qualität!

Some people already asked for prices and here they are: GFK in white or black - 59,00€, Carbon 89,00€.

Delivery in Europe and worldwide upon request. We always try to find the cheapest contractor. Advice: The shown fenders are NOT painted, but we fixed them as they come out of the mould. As you can see, good Quality!

...noch nicht ganz fertig

....das grüne "Tier aus dem Hinterhof haben wir schon mal etwas verschlankt und entrümpelt: Dekor sitzt schon , Kawa Embleme am Tank schon dran und die Felgen kommen später dran...
our "Backyard Lady" has already got some Weightwatcher Tuning. Decals are ready to race, Kawasaki Retro Logos in place and Rims are coming next....

facebook!!

...wir sind auf facebook und ihr findet uns unter "Zephyr 750 Superbike"

..-we are on facebook and you can find us under "Zephyr 750 Superbike"

 Link: http://www.facebook.com/pages/Br%C3%BChl-Germany/Zephyr-750-Superbike/144672032271437#!/pages/Br%C3%BChl-Germany/Zephyr-750-Superbike/144672032271437?sk=wall 

Schutzblech | Fender

...ab sofort können wir Kotflügel für vorne in verschiedenen Materialien anbieten. Standard ist GFK in Schwarz oder Weiß. Ebenfalls möglich ist Carbon oder Kevlar/Carbon.

..Frontfender in different  materials are available from now on. Stock is Black and White, but Carbon or Kevlar/Carbon is also possible.

naked bike

Gute Zephyr aus 1994 mit wenig km! Leider ist der Lacksatz nicht komplett. Der Tank ist gerade beim Lackierer und die restlichen Teile treiben wir gerade auf..

Good Zephyr from 1994 with average mileage! Unfortunately the bodyparts are not complete. Tank is in the workshop for some new paint and we are looking for the rest parts....

...neues Pferd im Stall!

....wir haben eine grüne Zephyr aus einem Schuppen befreit! Jetzt wartet sie auf ihren Umbau.
....we found a Zephyr in a backyard and now it's waiting for conversion.. 

70's Style!!

Ich habe mir alte Kawa-Typenschilder besorgt und jetzt ist der 70's Z-Style fast perfekt. Naja fast...ich glaube die 4in1, die in der Garage liegt, kommt auch noch dran. Mittlerweile habe ich mal wieder einen Versuch  bei mobile und auch bei ebay zum Festpreis gestartet - mal sehen wie es läuft..... Hier noch ein paar aktuelle Fotos mit den Z-Typenschildern:

I organized some oldstyle decals from the former Z-models and now the 70's style is nearly perfect!

...lieber selber gefahren!!

...nachdem ich die Zephyr so schön wieder hingekriegt habe wollte ich sie ja eigentlich verkaufen, aber es haben sich nur viele "was ist letzte Preis?" Käufer gemeldet und einige die eigentlich was viel günstigeres suchten. Da habe ich lieber selber noch etwas am Gas gedreht und sie wieder aus mobile rausgenommen. Das war ein schöner Spätsommer mit prima Touren und neuen Packtaschen von HG. Ich habe einige Städtetouren gemacht und viel Spaß mit der alten Lady gehabt.