Recent content by spurlock

First some history. As a teenager in the 1960s wrenching at the local Honda shop my bedroom wall was plastered with clippings from Cycle World Magazine of Honda's many race victories of the day. Soon Honda offered their 50cc CR110 and 125cc CR93 production racing bikes to the public and I got to...

I've listed a brand new pair of Hagons on ebay here: http://www.ebay.com/itm/-/302325666055? They are 320mm eye to eye, with 12mm bushings x 19mm wide. Springs are 78#, intended for a smaller bike. I bought them for a '75 Honda CB125S, but they are just a bit too long so I'm selling. Opening...

Thanks again for the comments guys. My buddy is truly enjoying his classic 400F as we ride our twisty California back roads.. -Bill

The resistor is to compensate for the difference between high and low beam headlight power. The lighting coil puts out 35 watts which matches the 35W high beam draw. The low beam filament is only 25W so the resistor in the low beam circuit burns off the excess 10 watts. Without the resistor the...

Thanks for the kind words guys. -Bill

I'm not familiar with that product, just know that Gasgacinch works well. I use the multiple coats/drying between coats/drying before assembly as standard procedure on all head gaskets with good results. And it still allows fairly easy disassembly in the future. Not to say other products would...

Thanks. I went ahead and posted a full build thread on that bike here if anyone is interested: http://www.dotheton.com/forum/index.php?topic=72261.new#new I left the cylinder and head unpainted raw aluminum just like stock. By the way the fix for the seeping head gaskets on old Honda fours is...

Back in 1976 I was wrenching at a Honda shop in Davis, California and a '75 CB400F came in for its second crash repair with only 1,200 miles on the clock. The rider was a reckless kid and his parents wisely pressed to sell the bike back to the shop to save their son from himself. Bayard, a good...

Well, depends on what shape it is in. But in general you need lots of elbow grease, a good buffing wheel, knowledge of paints and pre-painting surface prep, and usually some type of blasting cabinet comes in handy. Glass bead blasting is useful for cleaning/prepping surfaces to be painted, and...

Hello Hans-Peter and Volker, I just received my copy of your book and want to thank you. It is a beautiful piece of work, full of great photos, detailed technical information and extensive research. It will make a wonderful companion to my little Cuby engine. Thanks for all your work, -Bill

Most likely it is the needle bearing at the top of the shaft that is rusted/seized to the shaft. One option is to use a torch - carefully - to heat the bearing area and use a hammer and punch against the flared part of the shaft in the first photo to try to drive the shaft upwards. Second option...

Hi there, it looks like the part of your left side case that holds the short lifter rod is toast, and probably the hole that holds the lower end of the actuating lever as well. That is common on these magnesium cases. Below is a shot of the hole on my case, which was not nearly as eroded as...

Hi there, I'm going to offer a different perspective from most of the posts here. Of course the bike is small and relatively low powered, but the CB125S is a very capable machine. Consider that in many parts of the world bikes of this size are among the most common form of everyday...

Here's my original post on the VJMOG forum. It has a couple of photos and a link to a photobucket album with more pics:: http://www.vjmog.com/ftopict-10455-modify.html+rear+shocks+allow+damping -Bill

By the way if you need a CB125 shop manual there is a pdf version factory manual here: http://www.dotheton.com/downloads/Honda%20CB100%20CB125%20CL100%20SL100%20CD125%20SL125%20Workshop.pdf -Bill