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Close to finish the project and now I'm debating myself between different options when thinking about the glowplug driver. What do you use? Arduino to regulate depending on rpm's, NE555 timer to provide an adjustable output, a voltage regulator to provide a constant voltage? I'm a little bit...

Dear all, Now that my Edwards radial 5 build is close to end, I have been playing with the idea of starting a Merlin as a next complex project and I am considering the options. While fiddling around the Internet I´ve found what it seems to be a very comprehensive set of plans by K.E. Olsryd...

Have you watched Clough42's series of videos on building a grinder that fits an Aloris style post? I made myself one and it works like a charm. Anyway, having a surface grinder, next project will be a cylindrical grinding attachment.

I've been working in the plans of this engine for some time. Currently I am analyzing the Kugelfischer mechanical injection to check if something can be done in the model, although it seems to be extremely complex. If anyone is interested, we can make this as a group project. Currently I am...

Thank you one more time!! I´m very proud of this community. In such an activity as engine making, you´ll need technical support sooner or later and this forum is full of people like you willing to do it.

Just one more question: Must the diameter of the follower to have a certain proportin in relation to the grinding wheel diameter? Thank you very much. I am unable to find the Strictly IC number you mention.

Thank you! I'll have to sit in front of my computer to translate it into cad. Camshaft grinding appears at the beggining to be a simple task, but when you dig into geometries, ratios and so, it becomes a complex issue.

Nice work!! How do you calculate the profile of the master cam template? Thanks!!

Thank you Mechanic boy and Jos!! I'll use os-f. Another question to delete from my "one-million question s list" about the Edwards 5.

Nice job Jos!! I have one question...What glow plugs do you use? I am building my own Edwards radial 5 but it seems difficult to find the ones that the plans specify (Fox Long with idle bar) they seem to be really old stuff... Thanks!!

Nice done!! I love the fine matte finish of your pieces

Nice work! Very clean. I love the finish in the aluminium parts. What type of blasting media do you use? Congratulations for such a beautiful machine!

Thank you WOB!!! You´ve dissipated my biggest concern about particles embedding into the material. Very good article, I´ve read it now two times and I think I am now prepared for the challenge!!! Best regards

Hello fellow members! I am currently building en Edwards radial engine. Next part I want to make are the piston liners made out of cast iron. I want to lap the ID to have a perfect fit with the rings but I am not sure about what compound I should use. I have several grades of diamond paste...

I think it will not be possible to get a copy of that plans. Another issue (supposing you are able to find them) would be the task of escalating the design to acomodate it in your Riva. The work involved in such a task would be so big that I think it would be better to design an v12 from...

Congratulation Jos for this beautiful exercise of mechanical art. Your posts showing us how an entire engine is built using only a lathe are the demonstration that determination and know how are by far more important than owning a ton of equipment. I am really enjoying this thread. I hope to...

Are you trying to help or is this just a joke?

Good find, but unfortunately again...out of stock. This thing is really hard to get.

Thank ou Niels. I sent you a PM.

Thankyou Hopper. Yes, that´s exactly what I was looking for, but this webpage is only a redirect to ebay and unfortunately, the item was sold time ago. :wall: After some tries, I am willing to pay twice or four times the original price if I find it.:)