International Waters Community

International Waters Gallery

hydraulic dynamometer details


35 files, last one added on Nov 09, 2005
Album viewed 757 times

torque cradle dynamometer details


28 files, last one added on Mar 15, 2006
Album viewed 485 times

bell valve type induction


10 files, last one added on Jul 16, 2005
Album viewed 406 times

fuel metering carburetor


12 files, last one added on Jul 17, 2005
Album viewed 439 times

30,000 rpm machined steel tuned pipe


8 files, last one added on Jul 17, 2005
Album viewed 319 times

propeller details

propellers 006.jpg

13 files, last one added on Jul 25, 2005
Album viewed 1098 times

chrome tank details

chrome tank 001.jpg

9 files, last one added on Jul 22, 2005
Album viewed 350 times

liner machining & grinding fixture

chrome tank 015.jpg

4 files, last one added on Jul 22, 2005
Album viewed 274 times

exhaust radii cutting fixture

chrome tank 012.jpg

3 files, last one added on Jul 22, 2005
Album viewed 290 times

how to make a reliable 32,000 rpm+ .90 roller rod

connecting rod 025.jpg

23 files, last one added on Jul 28, 2005
Album viewed 563 times

Non-reversed geared twins

Deep-Groove Ball Bearing 050.jpg

8 files, last one added on Sep 07, 2005
Album viewed 287 times

A .90 or 1.0 cu. in., completly custom built, completly reliable, 7+ HP motor


46 files, last one added on Nov 21, 2005
Album viewed 738 times

26 albums on 3 page(s) 1

Random files - Jim Allen's Gallery
crankcase, crankshaft, & piston fixtures 020.jpg
Piston boss fixture768 viewsOnce the rotary table has been centered, a .375 dowel pin locates the fixture on the rotary table with the piston on center. To use this fixture, piston blank OD's must be the same size & the correct size to ensure centering. The machined groove, on the left of the fixture, allows the re-location of pistons after removal for skirt machining operations. The piston's wrist pin hole now becomes the zero point for location.Jim Allen
Deep-Groove Ball Bearing 065.jpg
Hot wire cutter311 viewsThis 24 in, .032 dia hot wire cutter uses 7.5 to 9.4 v. The aluminum support on the .750 dia fiberglass rod is necessary because of the spring pressure exerted on the nichrome wire. The handles are store bought items.Jim Allen
torque cradle 013.jpg
Throttle control & main shaft clamp block726 viewsDuring needle setting, the main shaft is prevented from rotating by the large black delrin clamp block & the visible locking screw. After setting the needle, this block is released with the visible jack screw & the torque reading is taken. The engines rpm is taken from the fan's hub.Jim Allen
gas tank 015.jpg
Tank & baffle462 viewsThe tank baffle has an opening at the top only. Because of its angle, fuel will pass over the top whenever the boat is turned to the right. Turning the boat to the left will not allow any fuel to pass except when the tank is full. The fuel line (located in the lower left rear corner) & the pressure line (located in the upper right rear corner) are also welded & soldered into
Jim Allen
Engine building 007.jpg
many different crankshaft designs, & materials712 viewsFrom left to right; the first two one piece crankshafts (.375X.500) made of 8620 tool steel had their .281 dia crank pins sheared off during dyno runs. The next three crankshafts (.375X.500) made of 9310 tool steel through hardened failed when their .3125 dia crank pins were pressed in with a heavy press fit (.0013). The last two crankshafts (.3937X.5906) made of AISI S-7 tool steel through hardened, with .3281 dia crank pins at .0013 to.0015 press fit, have never failed on any dyno run or lake testing.Jim Allen
dynamometer 015.jpg
torque arm716 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
288 viewsThe finished piece will be marked for future reference. It makes the setting of the compound for taper cutting an easy operation & gives very accurate results.Jim Allen
291 viewsThe finished piece can be used repeatedly to set the compound accurately after indicating both ends for concentricity. The piece has an indicating mark that enables it to be placed in the same position in the lathes collet.Jim Allen
connecting rod 011.jpg
571 viewsThe bottom of the holding fixture has holes to locate both the upper & lower end of the connecting rod for milling the round eyes of both. This fixture uses the same bolt hole pattern at both ends when mounted to the rotary table. The sides of the fixture are parallel to the center axis of the holding fixture holes allowing easy alignment at 0 deg.Jim Allen
1231 viewsThe entire assembly runs concentric within +- .0002. The flywheel is knurled for a non slip grip. Notice the old style pull cord groove used for engine starting.Jim Allen

Last additions - Jim Allen's Gallery
812 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
674 viewsThese spring steel washers will prevent any galling of the clamping nut, even when it is tightened with great force.Jim AllenSep 27, 2007
691 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
482 viewsJim AllenSep 27, 2007
596 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
605 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
560 viewsThe collet holding fixture is made of #316 stainless steel & is not hardened. Jim AllenSep 27, 2007
537 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
650 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
952 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