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I would second epoxy paint. I recently painted a project with sliding surfaces and still no scratches or chips yet. On the plus side is it will already be shiny after spraying , that is very comparable to polished paint. The one I used was from lauers custom weaponry found at midway.com...

Finally around to cutting metal for this build. It is amazing how much more $ wise this motor is vs original size. Looking bout 400$ give or take. Dont know if this is the tariffs talking or what, but every peice seems in the 80$ range. I stressed over this mounting in every possible way for...

Thanks for the tips, I've not built a motor to this size so learning as I go With weight savings and some easier machining , and polishing I think 2024 alum will work out great. The price does vary quite a bit between sellers though. The only part I need to narrow down now is the...

Doing some research I came across a issue of putting stainless and alum together. Evidently the electrons travel between each other, with the metals acting like a cathode, and anode. Does this only count when parts are touching, or just close to each other. I plan to use stainless for...

Thanks for the reply, The con rod being alum I'm sure would be fine as you state, more of a personal liking to a mill engine style shape in steel. I've been searching for my supply's and I swear every part I need x2 in size is a 100$ give or take. Prelim estimates ar around 4-500$ for...

I'm building a Kerzel at double scale and my guess it size wise I will end up about 1/4 scale of other hit and misses. I think with the added compression and so forth, if I should upgrade?. Original version calls for alum. I would prefer steel but don't know a suitable one to pick . Will have...

ive been scouring the net for a certain style connecting rod for my next build, and am having no luck finding a photo of it. Don't know if my search words are wrong . What I do know is it came from a marine engine and will be turned on a lathe for a round shank that tapers to a bolt on...

Being a novice I try to limit my remarks to the more experienced and will mostly only comment on things I've actually done vs not. Theoretically I'm a genius but reality says different Accepting others point of veiw is often hard for most, but I do believe that most of this lies in texting...

My first guess on the real snowcat was protection from falling trees and or rocks, but does have a tow mechanism I believe on the back so could be that, does have some artistic flair though. But in 1/4 scale the zombies would need to be about the size of the geico lizard to be effective.

When I first started looking at model engineering I was baffled by the amount of items that people chose to scale model. Which is quite literally everything. The amount of time involved and the craftmanship is quite stunning often times. But when choosing my projects I really like true...

Does the powdered alum. and rust pertain to swarf.? Like fine metal dust laying around could be combustible? Or does this apply to airborne particles? Had no idea about grain explosions and was raised in a farm community. As a boy I worked my share of dusty days on the farm, and with cows...

Impressed as always to your approach. I think I have a simplistic attitude and am anxious just to cut chips. The often indirect routes you take are just a marvel considering they are model engines. With this motor I've looked real closely at the full size versions, and and wandered if you...

Ok engine completely modeled in fusion 360. Wow that is a major achievement for me wasn't able to figure joint motion that would work in some cases like cam bobbin an pushrod. But I am now ready to start machining, but the more look at it , I'm thinking heavily of going double scale. My...

My take is you have square material already? As of now the image projected onto my eyeballs is to turn from round and thread, then make a split threaded collet (square) , then use vise to squeeze the thread and flip for each side, milling just the edges. Just a suggestion 300 threaded...

First off I'm sorry for the previous post, after rereading it I think I ended up venting right after a session, and probably came across a little more wordy than I would like. I had looked at draftsight very intently, if I remember correctly it was 300 a year which is the same as fusion 360...

Trying to draw up the head for the Kerzel tonite, and need some modeler wisdom. 2 issues hoping to resolve In the drawing for the valve cage holes (lines a& b) how do I know the angle distance between the holes --- 360/ by 3? I see the radius of .219 for the hole layout but not a...

Ahh some light at the end of my tunnel. Been working away on Kerzel drawings and here is where I'm at. So far I don't have any red flags so am happy about that. I do need to figure out which joints will make the model move correctly. My crank is ok for motion but after that I am lost...

Thanks for all the replys guys, much appreciated. After being so mad I thought my head would pop off I managed to settle down enough to keep pushing the fusion cad cam. I don't want to give up since I will need a program for cnc. I want to venture into cnc machining starting with a taig...

After studying the drawing more, I think it would have to be a bushing, bearing. The inside dia matches the dia of crank pin, then a split bronze bushing , with .437 being the con rod dia. I wouldn't think the design calls for a steel to steel engagement which would make sense for the extra...

Hey all fellow modelers. Finally picked a new project so this is my choice. I picked this engine for a few reasons. First being its I.C. I looked strongly at the knucklehead by draw tech, Edwards radial five, and Ron colonna' offy four cylinder. And decided these were above my pay grade...