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That sounds great Greg. When I screw the plug in now, the glow plug element is definitely inside the combustion chamber.......but it's about 1/8" or so from the valve seat. Hopefully that will do.

Thanks for the drawing Greg. Problem with angling them is I've already drilled them like the plans show, and I drilled them down to within .050 of the intake port (the original plans say drill down to .025). I know I at least have to go down as far as I have them now, but the question is do I...

Thanks Jason. I have that article, but he doesn't say in there how far down to drill the plug holes, nor does he say how far the plug should go down in the hole. That's really the main thing I'm curious about right now. Once I find that out, then I can find a suitable plug.

thanks for the info dieselpilot. What's your opinion on my first post? Do you think the plugs in my double sized version should still be the same distance from the intake valve port as they are in the smaller version?

Well, I had planned to use the original plugs, which were enya 3's, but it doesn't look like that plug will have enough threads on it to reach down that far into the combustion chamber if I go the distance that the original plans call for. Are there any glow plugs out there that are bigger than...

Has anyone built this engine? If so, I have a question. I am in the process of building a "doubled up" version of the engine. The original plans say the plug holes, which break through the combustion chamber, should be drilled to where the bottom of the hole is .025 from the seat of the...

Yes, I have thought about cutting my on. I've never cut any before as I'm new to the hobby of machining, but I have a rotary table and should be able to do it. But the info you have given me is very, very helpful. I think now I should be able to find a set of gears that will work. Thanks so...

I've done some searching, and have yet to find a pair of gears that would fit perfectly with no mods to either the gears or the shafts. How important are the pitch and the number of teeth? As long as the number of teeth on the large gear are twice the number on the small gear, it would work...

I'm in the US. Yeah, looking at HPC gears, the OD of the 24dp-18t and the 24dp-36t are double what the 48dp-18t and 48dp-36t are, but the bore dia is not. The bore diameters on the 24's are .3125. The doubled up plans calls for the cam and crank shaft to be .375 (I've already made the...

Thanks Jason. The original plans call for 48dp gears, so I guess the double would require 24dp? I know absolutely nothing about gears. I do have the ME editions where Mick Knight builds the double size whittle, but I haven't seen anywhere where he mentions where he gets them or what sized...

I've recently started the whittle v8 and am doubling the size. I saw one poster on here that started doing the same, but he hasn't posted in his build thread since late last year. Has anyone else attempted this project? If so, where did you obtain the bearings and gears, and what size should...

Thanks kwom, that is a very, very helpful link.

First off, I'm a newb to machining and model engine building. My question is what is the best approach to turn a smaller diameter in between two larger diameters (two shoulders)? For example, a journal on a crankshaft. What is the proper tool to use? A parting tool? If so, how do you get...

My cousin just sold his 9X20 Lathe and is looking for a 12X36. He is located in South Alabama. If anyone has one for sale in that general area, please let me know.

My cousin has found one for sale. It is a 12X36 (model #1236). The guy told him it was made in the 80s. Are these considered good machines? From what I can gather, they are Taiwan machines. Is that correct? Are they better than the Chinese machines? What would this particular machine be...

Anyone know what I could expect to pay for a good used Starrett dial test indicator that measures in tenths, and in reasonably good condition? Something like this one sold by LMS: http://www.littlemachineshop.com/products/product_view.php?ProductID=3168&category=

My cousin ran across an old Sears Craftsman 12X48 Lathe, model 101 (I believe that is what he said). He says it appears to run smoothly and is in what he calls "overall pretty good condition". Sorry, wish I had pictures to show, but I don't. It also has a 4 jaw chuck and steady rest with it...

Very much a newb here, and was wondering how you go about milling a smooth radius, such as the front bearing housing on the Whittle V8 in the second post of this thread: http://www.homemodelenginemachinist.com/f31/whittle-aero-v8-wip-4583/index45.html Looks like he's using a rotary table and...

I'm new to this hobby and was wondering if, in addition to safety goggles (which is obvious), should a dust mask/respirator be worn at all times while machining metals? Are certain metals hazardous when machining them? Most of the safety rules in the shop are common sense (turn machine off...

Also V 45, is that a 12" DRO on your Y axis? I'm asuming I would only need a 6" on my X2 since I only have about 4" of travel anyway, although it looks like maybe perhaps a 12" would be easier to mount the way you mounted yours.