Veenendaal 2011

okay, it has been some time ago, and there have been events since then, but this is what happened at Veenendaal this year.

Picture thanx to Lea langezaal
As can be seen, I have a groundclearance issue.

And then this is what happens:


Emergency repairs so I could start the next heat.


more can be read at Ralph's blog, he came to see what I was doing with the engine he donated to my project.
Also a nice video of me just before the start.

By the way, I plan to build different, higher, footpegs for next season, a little less original, but I need the groundclearance. I'll make it look like honda made them by using the right parts.

Coil testing

I had some problems with the ignitioncoil I used on the S90, it was an old CB72 coil but when it was replaced with a different type, my S90 ran better.
I really did want an original CB72 coil, as they were used n RSC90's back in the 60's and it looks good, so I had to test the coils that we have.
My SS50 was the answer:

I found out which of the 5 coils were good and now have an original CB72 coil on my S90 again.

C110 engine, but not my own

Been busy with a lot of things, but didn't take much pictures of my own projects,
so here is some of the C110 engine I have been rebuilding for Ralph

Ported head:


Everything glassbead blasted and some fresh paint on the cast steel parts:


Clutch pressure pin / oil guide stolen from my extra motor as the one that was in Ralph's motor was broken. Anyone has a spare?


Kijima ohc headcover in the lathe:


Now it is a cluch cover:


Modified finned tappet covers:


Also a Kijima ohc headcover as a pointscover:


Modifying a webco Z50 intake manifold for the C110 head:

With homebuilt heat isolator.

Taken the flange off, because there was no fitting carb for it, now a rubber flange off an SS50 manifold so we can fit any slant flange carb:


Top view:


It's almost done now, just some special oil line and some gaskets for the manifold and we can start thinking of starting it up and seeing how it runs.

Look what I found

When wondering around the attic of the local Honda shop, I found a set of original C110 footpeg rubbers, no longer available from Honda directly.
Found these in a bunch of NOS parts they have.

home made rev counter face

I made 2 different faces for my homemade rev counter, they are based on what I made for my 50 a few years ago. A standard Honda tacho with a homemade CR110 replica face.

I cleaned off all but the scale and made something modelled after some RSC tacho's I've seen on the internet:

This looked a little plain to me, so I also made something with the actual RSC logo:

These are just normal printouts for now, to get an idea of what it would look like, but now I'm not sure what to make. RSC in logo or text....what do you think?

home made rev counter stuff

The plan: build a mechanical tacho and tach-drive onto an SS50 engine.
terms: do not use kitaco or takegawa bolt on stuff.

I started with a tach drive from a CB175, turned something on the lathe and took the teeth off of an old camshaft sprocket, this should be soldered together with silver and mounted to the camshaft.

should look like this when mounted:

The housing was cut down to remove unnecessary material and to create a hole for the bolt to go through that will hold everything onto the cylinderhead. A brass plug will be put in there with threads to accept the bolt.

One problem, on a CB175 this is on the right side of the camshaft, on the SS50 it will be on the left, so the tachocable will be turning the wrong way.

On the back of the Yamaha 600 guage unit (that I took the tach from for the RSC90) was an angle drive that I could use to reverse the rotation...

Some PVC tubing, a CB50 tach and one Yamaha drive later:


Testrun if it all works...NO?...
I looked at the angle drive the wrong way, so it doesn't actually reverse the rotation.
I will have to make something else to fit onto the modified CB175 drive and use this tacho on another bike when it is finished.
Will be painted black, alloy ring to be turned on the lathe and a piece of plexiglass to close it all up, after I've made a new face for it, probably upto 14000 RPM or a bit higher.

Caferacerdag

Today the dutch caferacer club had a meeting, so I decided to go and have a look.
It was a nice excuse to take the BMW out again and my dad came along with his Oudshoorn BMW, although not totally complete yet (notice the seat) it was a nice ride to run in this newly built 700cc engine.
The bikes before departure;


The oudshoorn looks small next to my R90/6

To see more pictures of great caferacers that attended, look at the chalopy blog Ralph was there too and took a load of pictures.

RSC engine cover

Look what came in recently.
Specially made in england by a great guy called Colin Marley.

Original next to CNC milled, I glassbeadblasted mine to match the rest of my engine, and for some extra cooling surface.
Here is what that looks like when mounted, sorry about the fuzzy picture.

Some of these will go to Australia (you know who you are) but I haven't figured out the shipping yet. There is one extra if someone would be interested.

Hondaday today

Today was Hondaday, the yearly gathering of the dutch honda moped club.
In the morning the weather was almost clear, so I thought I'd give the SS50M a ride to completely break in its 70cc engine.
I totally forgot to take pictures, but Ralph will probably put some up on his blog.
Spoke with Ralph for a while about the C110 engine I am restoring for him and the S90 parts he borrowed me. Had a look around the lot, spoke to some other people too and then went home again.
But only after I had the SS50/70 on the dyno. The Honda club had arranged a free dyno for everybody to try their bikes, so I couldn't pass that up.
Graph seen here with some great pictures from Mischa who brought his 1970's polaroid camera.

About 6.5 HP at the rear wheel, not bad for a 70cc with 20mm carb, with a top of 115km/h.
The bike is now totally run in, so it's time to start looking at the 26mm carb that I would like to put on it.

The right tools

Finally my tools are in.
Original Honda crossheaded bolts are different from philips or regular crossheads So I ordered the original Honda workshop tools.

This is worth the money, it really makes working on your old Honda easier.
If you want to order them too, the Honda partnumers are:
07603-0050101 for M5 and smaller bolts.
KL1696 for M6 (engine bolts)
It did take a while because the big size was in backorder for a long time, so be patient.