Thursday, November 23, 2017

Honda CBX125F and CBX125C

Honda R.F.V.C. means Radial Four Valve Combustion Chamber
Honda designed RFVC engine for dirtbikes firstly due to needs for more power,torque and less fuel consuming.

RFVC engine mechanism was adopted to CBX125F and CBX125C in Japan
a few years later.
Their engine was smallest 125cc engine with RFVC mechanism.

If you ride CBX125F at vintage motorcycle race,you will be satisfied with result for its high performance.
If you came across CBX125 at your local shop,buy her now.

CBX125C is retro chopper style,which engine adjusted mild for downtown use.
I have recently got junk CBX125C for my daily use. 
125cc displacement is Mopet category so that registration is easy and less insurance cost.
My junk CBX125C needed overhaul fuel preparation.
Tank inside was worst condition with rust.  Fuel cock was worse neither.
Twin carburetors were needed to be brake down several times to clean and adjust.
I enjoy riding her engine with high revolution.  I might get a CBX125F additionally when ride CBX125C for a while. 

Friday, December 11, 2015


I need to dismantle SR400 engine to ship abroad.
But it is too heavy with post service.
I am going to separate into upper head and lower case.
It is drainning engine oil.

Tuesday, July 28, 2015

Air conditioning suit



It is so hot to work in summer.

Air conditioning suit is available.

It makes workers body cooler. 



Does anyone develop much more powerfull air conditioning suit for motorcycle ride in summer? 



I know there is no-sleeve shirt which filled with water,vaporizing water and rider cooler.

How about air conditionning suit for ride?


LED tail light did not light

Prior to go touring,I changed to LED tail light.
But It did not light when stopped.
I think cause bad connection of wireharness.
I will check terminals of elec.coupling. 

Saturday, July 18, 2015

Kawasaki Estrella 250cc




Kawasaki Estrella is 250cc displacement.
And 250TR is a little sister of Estrella.
So gas tank can be installed without any modification.
250TR tank is simple shape so that easy to make scrambler as shown on top.
caferacer as well.

Please take a look list of Estrella on auction. List of used Estella


Wednesday, February 11, 2015

Trellis frame

Suzuki Bandit 250 inline-four
Yamaha SDR200 2stroke
Yamaha R1-Z 2stroke 
Trellis is one of frame type.
Ducati adopts Trellis frame.  Buell S1W as well.
I like those Japanese 250cc motorcycles Trellis frame works made by hand.


Monday, November 10, 2014

1988 K100RS cafe racer,now on sale at Yahoo Auction

It is hard to make a cool K100RS cafe racer.
Because original K100RS was perfectly designed by BMW at that era.
In line four engine gave more power and speed than flat twin engine.
But it was heavy due to flying big block engine.
I think weight lighter K75 triple engine more controllable than K100RS.

This K100RS is equipped with universal fairing and racing rear seat pan.
And repainted tank is showing its aluminium skin on both sides. How cool.
How do you think?  I like it!