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my mostly uneducated question :o, does the direction of extrusion create a grain direction? If so does it affect machinability in any way? Ray M

I've lust finished and run the Duclos 'Topsy Turvey'. It is an excellent runner but wants to jump up when it fires. Any suggestions for a fix? The compression seems very high, is that a possible problem? Ray M

I have the ER-16 R-8 mount on my knee mill. This size takes me from .375 down to smaller than a # 60, that covers a lot of my work on my little engines.(I've seen an R-16 collet for sale that is one Imperial size larger than 3/8") The ER-16 is easier to change collets than the R8 I go to for...

Enco has a 6" horizontal rotary table (phase 2) on sale. $270 marked down to $180 plus 20% off thru 1/29/10. Promo code save20 . Free shipping is also available as an alternate whichever works best for you. Ray M

Once upon a time there was a machinist working the night shift. One night he inadvertantly drilled a small hole in a fairly new Bridgeport bed. He sized the hole to accept a flush mount press in spring/ball oiler hoping the boss would think it was part of the bed design and not notice. He...

Thanks for the article Kenny. I need all the help I can get. My latest build was the VAL (#15&16 Model Engine Builder). Photo in issue #20. It has a 1.124 bore. I used 4032 and allowed .0015 clearance using the criteria atwww.eriperformace.com. The engine turns ~9k . I often build less...

I am getting ready to make a piston (1"od). Could you suggest some lower expansion aluminum suitable for this low RPM hit and miss?

4032 aluminum has a very low coefficient of expansion to allow for a closer fit to the cylinder wall. It seems to be readily available. If the need be I'll take a look at my records for vendor. Ray M

A bit off topic, but the 'fire eater' runs a lot better with a 50/50 methanol/alcohol mix. Ray M

Thanks for the post. I wish I could say more. Thank you Jerry for all your help over the years. Maybe we will have another conversation at another Gears show somewhere else. Ray Monahan

my carb is now back to original design. Ray

He would answer all questions to the best of his ability (which was vast) I was fortunate to discuss engines with him in person, landline and electronically. Dam it! Seems like this hobby is running out of the old timers. They are not really appreciated in ink during their time. Thanks Jerry...

Thanks Chuck; That was the answer I wanted but not expected . 6061 it will be. Ray M

After looking at the 'topsey' drawings I'm wondering if anyone can think of a reason not to use 6061 verses HRS for the body from a practcal design standpoint. Looking frward to comments. Ray M

I converted the ignition system to Roy Sholls' CDI and all my problems went away. Looks like my 6vbattery with 12 volt coil couldn fire fast enough to feed the twin ignition. Hope this helps someone to not spend lots of time trouble shooting on startup Ray M

I built a upshure twin from MEB plans a while back. I cant seem to make it run more than one speed (~ 1500 RPM) no matter the throttle/fuel needle adjustment. I ran it on a Ridders vapor carburetor with the same results although lower RPM. I am going to convert to CDI ignition (maybe hall...

Thank you Mel I think it will be my next build also depending on the plans. I just finished the VAL engine from MEB magazine and had a lot of desgn work to do. The editor is going to reprint the whole drawing package in a future issue. Ray M

Chuck; I'm wondering which book has the 'topsy turvy' engine? thanks, Ray m

I am looking for plans of an engine for my next project. does anyone know of one published book available with P Duclos 'topsy turvy' engine. p.s. any body attend the WEME show in vallejo Ca. USA? Ray Monahan

Shooting Star is a good thing. I have it on my 9" southbend and my Grizzly mill. I bought at shows directly from Shooting Star ($50 off). I have since dealt with them via telephone and they are excellent to do business with. Take your time installing. They are very accurate for the hobby...