Anybody want to guess---

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Brian Rupnow

Design Engineer
Project of the Month Winner
Joined
May 23, 2008
Messages
14,916
Reaction score
8,219
Location
Barrie, Ontario, Canada
What I'm playing at???
CYLINDER-2.jpg
 
Its a Webster. I only think that because I'm studying the plans right now and I thought it looked familiar.
 
hi Brian.
I'm surprised if it's not a cyl. for the Webster. ::)
Fun to build, and a great runner :)
crankshafter
 
I was a little slower. Have the plans out on the work table and walked by and noticed the similarity. Just not the first to do so. After I am done with my current project I will start the Webster.

Brian; I recall reading that it needed extra cooling. Are you going with the stock cylinder / fin design?
 
Well there!!! Thats enough machining foolishness for one day. Yes, its a Webster. I am not going to add any extra cooling. It will only run for 5 minutes at a time---if I was going to run it any longer than that, I'd shave the fins off and add a water jacket. I haven't been in my little shop since I built Elmers 33-Kind Of. Fortunately I've had "real work" to keep me busy for a few weeks now. Its just that on a Sunday, in the middle of February, there isn't a whole lot to do, and I am intrigued by the simplicity of the Webster. I don't plan on rushing through this engine like I have my other projects, rather it will be a "fill in empty days" kind of job. The original plans that were posted are very well done, so I won't be posting any plans of this one. Just progress posts as I go along. This will be my first internal combustion engine.---Brian Rupnow
cylinder-step-1001.jpg
 
And Oh Yeah---In case I haven't mentioned it 2 or 300 times now---"DAMN---I hate using a parting off tool in steel!!!!"
 
hi Brian
Nice work. I build mine a couple of years ago and it was a fun project. only a few things I would have done is making the the crankshaft a Little bit longer so I could have had room for a belt setup for a generator. One more thing make it with a vertical exhaustpipe. Like the plans says it is horizontal, and it blowing the exh.gas in to the geartrain.Messy? Ask me.
I will be following your project.
crank
 
Brian Rupnow said:
And Oh Yeah---In case I haven't mentioned it 2 or 300 times now---"DAMN---I hate using a parting off tool in steel!!!!"

Me too!
 
brian you might want to try a rear mount tool holder for parting.
i will try to post some pictures of my rear mount tool holder if you like.

chuck
 
I'll second that - wouldn't be without mine
 
aermotor8 said:
brian you might want to try a rear mount tool holder for parting.
i will try to post some pictures of my rear mount tool holder if you like.

chuck

Chuck---Sounds interesting. I'm sure others would be interested as well. Why don't you start a thread about it and post pictures and a write up there.---Brian
 
Brian Rupnow said:
Fortunately I've had "real work" to keep me busy for a few weeks now.

Good to hear Brian, hopefully you can shake off the "stir crazy" feeling and just enjoy your machining as a hobby, ......... good luck feller Thm:

CC
 
Had to drive down to Toronto this morning and call on a customer, then back home this afternoon to finish the cylinder and model up the mating part. Got 2 calls from shops in Concord and Kitchener wanting to see me about work tomorrow---and the weather guy is forecasting a blizzard!!!
ASSY-CYLANDCYLHEAD-FRAME.jpg
 
This evening I discovered the first "caveat" for anyone building the Webster engine. The four tapped holes that hold the cylinder to the "Cylinder Head-Frame". I used #5-40 threads instead of the #4-40 called for on the plans (only because I have a box full of #5-40 shcs). And here's the rub----If you only drill through the 1/4" mounting flange, and not through the first cooling fin, (for cosmetic purposes), then you can't get the threads all the way through with a normal tap, because, of course, the end of the tap hits the first cooling fin. So---I'm going to have to buy a #5-40 bottoming tap. Every time I build anything, I end up having to buy more tooling. I was afraid of putting in a tapered bore, as the cylinder is 2 1/2" long, so this morning while I was out, I bought a 27/32" drill and a 7/8" chucking reamer. That shot my budget to the tune of $82.00. Now I have to buy a bottoming tap. #@$%!!!
CYLINDERCAVEAT003.jpg
 
Hey Brian, your fist foray into the IC Engine world. It's a whole new level of excitement!

Chuck
 
Brian,

IC, IC, IC. Maybe boring and a lap from (s)crap would have been cheaper. Only the tap to dance about then.

Seriously it's coming along nicely. :bow:

Best Regards
Bob
 
hi brian
instead of buying a bottoming tap you could make your own.
if you have a 5-40 tap that is dull or has the end broken off you can just grind the end flat and that should make a bottoming tap.
now you will have to take it easy using the tap but with some cutting oil and a little luck it should work just fine.

nice build and welcome to the world of i.c. engines ;D

chuck
 
Brian, where in Toronto were you?
next time we should meet up and talk about your models, you would have to bring some along you know :bow:

I have been debating the webster for my sherline/taig lathe but not sure yet if the machine chuck is capable?
anyways I will be watching your progress :)
 
Speedy---Yesterday I was in Oakville. Today I was in Burlington. Friday I may be in Concord. but---those are business trips--straight to customer, do business and straight back. If we got together to play "steam engine" it would have to be on a weekend.---Brian
 

Latest posts

Back
Top