Interesting Jason! I've not started on my heads yet. I think I will try taking a few thou at a time off the bottom of the rocker posts to try to get a tight lined up fit. I'm going to use rimfire vr2 (maybe long reach) plugs but will try to get hold of a thin sided box spanner to work out how...
Thanks Kees. Your 3D printed v4 looks amazing. Yeah I only run for short periods, so no fans needed. I found that the only weak element of the V-twin design is the tiny brass connector between the gear case and the crankcase. Otherwise the engine runs very well.
Cheers
Andrew
I've made both the Hoglet and Jerry Howell v-twin. Both builds are documented on my YouTube channel. The playlist for the Hoglet is here:
The JH v-twin is a more complex build.
Cheers
Andrew
Hi James
Don't be put off making your own piston rings. It's fun and you will get a real sense of achievement.
My video below shows the method I used for the very first time. I've used the same method several times since then and always had great success. It takes less than a day to make several...
Just for info. The odds n ends engine drawing shows a Honda cm-6 spark plug which is M10 x 1. Mind you, when I made mine I used a 1/4" x 32 plug cos that is what I had kicking around.
I hope you get it running soon.
Cheers
Andrew
Kripto beat me to it! Take the easy option and buy a couple of Mod 0.5 gear cutters. You just need to modify the distance between centres, as in my video.
Hi Brian - thanks for the shout out.
Your solution looks good.
For info - I managed to find a geared motor on eBay. I've pinned the following description to my video explaining what I later did........
I decided to replace my starter motor with a geared version. This motor was suggested by...
Hi Brian
If you have a nameplate design in mind I could try to engrave it in brass.
I would need your design in jpg or png format. I would then use Inkscape to trace the image and convert into svg format for importing into Fusion360.
No promises but I would be willing to have a go. I live in the...
Hi Colin
I hope you manage to get your dad's old engine running. I seem to recall that the most difficult bit for me was cutting the valve seats. I think I decided to change the design a little and made some valve guides to press into the 'head'. I should complete my Jerry Howell v-twin soon and...
Hi Gordon
I made a Philip Duclos odds n ends engine in 2021. It's exactly as per the drawings and runs really well. I don't understand how others have used a different carb, as its an integral part of the valve assembly.
Have you got the fuel tank outlet level with the carb inlet? If not, that...