International Waters Community

International Waters Gallery

Another pit box idea

pit box 006.jpg

6 files, last one added on Jul 22, 2006
Album viewed 39 times

precision cable collet assembly


58 files, last one added on Sep 27, 2007
Album viewed 164 times

26 albums on 3 page(s) 3

Random files - Jim Allen's Gallery
connecting rod 002.jpg
636 viewsA Brown & Sharp type dividing head is used to machine the windows in the retainer of a connecting rod & machine liner windows. A rotary table could be used, but the dividing head has a pin which drops into a hole eliminating the possibility of parallax error. Notice that this dividing head has a custom 36 hole plate mounted which allows divisions of 1/4 of a degree or 15 minutes.Jim Allen
Engine building 001.jpg
Some of the many machined pistons711 viewsMore than 50 piston types & over 100 pistons have been tested. Materials include; A-390; Mahle-138; Dispal-250; & RSP-444. Some pistons were set up in ABC setups & some in AAC setups. No particular setup gave a significant increase in HP & piston scuffing was not eliminated with increasing amounts of silicon in pistons. Piston scuffing was eliminated with the correct amount of taper & finish on the liner ID; plus the correct amount of taper on the piston top. Liners must be ground, not honed, & tapers on both must be done very precisely. No lapping of any kind is ever done to any piston or liner! This method works even when running the motor at very lean settings.Jim Allen
dynamometer 015.jpg
torque arm643 viewsNotice the upper & lower stops on the torque arm. A total of .005 movement is all that is necessary to read torque amounts.Jim Allen
torque cradle 010.jpg
Fan shroud rear view594 viewsThis view shows how the fan shroud is fastened to the rear shaft bearing support. Also notice the rear main shaft bearing mount. Both mounts are aligled bored together. They are doweled pinned & keyed to the 1.000 in thick Blanchard ground base plate.Jim Allen
Deep-Groove Ball Bearing 010.jpg
346 viewsAfter removing the retainer, move all the balls to one side of the bearing.Jim Allen
torque cradle loading devices 006.jpg
2 in hexagon stock after cutting426 viewsJim Allen
341 viewsThe stinger section of the tuned pipe, looking from the back end.Jim Allen
crankcase, crankshaft, & piston fixtures 025.jpg
Piston wrist pin boring fixture634 viewsThe spring loaded sliding clamp when locked into position, presses down on the piston boss. This forces the piston into the "V", locating it SQUARED & CENTERED every time; even with variations in the diameter. Notice the clearance at the end of the clamp for boring the wrist pin hole.Jim Allen
liners & pistons 012.jpg
Machined pistons & K-67 stock piston655 viewsThe four pistons on the left are machined from RSP Technology 30 % silicon alluminum alloy # RSA 444. Diamond tooling including drills, end mills, boring bars, & lathe tool bits make it possible to achieve a very smooth finish. The piston on the right is a stock piston.Jim Allen
paint spraying equipment 010.jpg
Pulmoson respirator with replacable filter252 viewsNEVER spray any type of paint without a proper respirator & proper ventilation.Jim Allen

Last additions - Jim Allen's Gallery
646 viewsCompleted pieces are all interchangeable & after mounting to the flywheel are within +-.0002 concentricity 1.000 in from the split collets face. The same type of a flanged piece with six mounting holes is made when I set up ball and pin universals for solid shaft applications. When using the solid shaft method the thrust is driven up the entire shaft into the engine by using hardened thrust washers between the ball ends & there sloted ends. Jim AllenSep 27, 2007
550 viewsThese spring steel washers will prevent any galling of the clamping nut, even when it is tightened with great force.Jim AllenSep 27, 2007
569 viewsMachine an arbor; fasten pieces securely; machine the OD with carbide. Finished washers have no burs on the OD or ID & are very precise.Jim AllenSep 27, 2007
366 viewsJim AllenSep 27, 2007
472 viewsAfter clamping .010 thick spring steel pieces between two aluminum pieces, they are machined square to a convienent size. Boring with carbide gives a clean hole without burs. Jim AllenSep 27, 2007
481 viewsThis photo shows the locking nut being singled pointed internally. This piece does not have to be hardened because it will ride against the spring steel washer when tightening the split collet. It is made of #316 stainless steel.Jim AllenSep 27, 2007
444 viewsThe collet holding fixture is made of #316 stainless steel & is not hardened. Jim AllenSep 27, 2007
426 viewsThe split collets are ground internally while being held in the fixture directly above them. External grinding was proved to be un-necessary.Jim AllenSep 27, 2007
529 viewsThis photo shows the back ends of the split collets being ground square to their ID's. This is done in a Suburban Tool Master-Grind. (+-.00005 spindle runout) The split collets are wrung onto a hardened indicated gage pin for this operation.Jim AllenSep 27, 2007
789 viewsTwo 6-32 SHCS, a precisely machined steel hub on the flywheel face (.5002 OD) & a flange on the tapered sleeve which has a 1.125 in OD (.5000 ID), ensures positive location of the tapered sleeve each time it is mounted. The hub is #316 stainless steel & is shrunk into the flywheel before final machining. Notice the six bolt hole pattern used on the tapered sleeve's flange. This feature allows automatic positioning of the propeller to a horizontal position if the engine should stop suddenly at wide open throttle & prevents the hull from diving! It is used on solid drive shaft setups.Jim AllenSep 27, 2007