Search results

Are you using annealed copper washers under each glow plug. Shouldn't have to over tighten to get them to seal. As for glow plug leads try just engines. http://www.justengines.co.uk/acatalog/Just_Engines_Online_Starting_Gear_115.html

Terry can you post some pics of the 1/8 " scale merlin. Cabin fever is abit out of my way. Maybe one day I will get over. Robbie

Paul. Thanks for reply. I was assuming that about the crank. I will use a bolt and modify to suit. Robbie

Half way through the assembly of howell v4. I have two questions regarding the assembly. 1. The oil jet in back of engine is this just a 2-56 bolt screwed in with a 0.006" hole through the centre. 2. I have assembled crank centre in to engine, fitted pistons and rods. Assembled big end pins in...

Need a little help with wiring/powering glow plugs. Have 5 cylinder radial which I'm about to get running. Can I use a 6 volt 4.5 amp battery? How do I wire the plug leads? I have 5 separate leads at the moment.

Terry great job on the cam blanks. As a lobe milling fixture can you not machine a vee block up. Keyed to the table of the cnc along the x axis. Then machine a slot 90 degrees to the vee. ( y axis ) for the lobe blank to sit in. Then you can machine each lobe and just move the cam along. A...

Can anyone recommend stepper motors etc Robbie

I have taken the x axis apart. When I unscrewed the ball screw all the balls fell out the nut. The motor sounds a little rough as well. When ran on its own. Can someone tell me what the details are on the motor? Also if I replace ballscrew/ nut will I need same pitch or can I configure this...

Yes around 20 minute machine time each part. First 3 parts are fine then the 4th part goes out about 5mm. All parts are up to a stop. It roughed the 4th part ok then the finish cycle machined the lugs of the part.

I have a boxford 190 cnc mill. Running mach 3. When I program and run part, it's fine. Then after about 40-60 minutes. I put fourth component in (same program ) it has an error on the axis and the datum has move 3-5mm making component scrap. The error seems to be on the x axis. Any ideas???

Scale coffman starter???

I have just ordered the drawings from myhobbystore here in the uk. £12.99

Gerhard They were actually german made hss blades. Think they were around £5 for the two. tried alsorts to stop fins bending. But only the two blade tool did a quality job. Robbie

Two hss 1/16" blades from ebay. Robbie

Paul Few photos of the tool I made and the radiator it produced. Robbie

Paul When I did this radiator I had the same problem with fins bending. I actually used two 1/16" blades. Ground each blade to give me width of one groove and half a fin. Then ground the front to .040" wide and stuck the blades back to back in a holder. Works perfect. One blade cuts the other...

George, do you have any other casting sets you want to sell. Regards Robbie

Were can I get small metric hex head bolts from. Require m1.6 m2 m2.5. Not had much luck finding the amount I need at a sensible price.

Completed all the parts for the steps just require building into the steps. These were done out of 2mm brass plate. Stuck down with double sided tape.

Also completed the end sills. All the holes were spot drilled on the cnc then drilled the various sizes to depth with a high speed sensitive pillar drill. Just need to tap all the holes.