International Waters Community

International Waters Gallery


hydraulic dynamometer details


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35 files, last one added on Nov 09, 2005
Album viewed 587 times

torque cradle dynamometer details


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28 files, last one added on Mar 15, 2006
Album viewed 323 times

bell valve type induction


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10 files, last one added on Jul 16, 2005
Album viewed 279 times

fuel metering carburetor


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12 files, last one added on Jul 17, 2005
Album viewed 286 times

30,000 rpm machined steel tuned pipe


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8 files, last one added on Jul 17, 2005
Album viewed 205 times

propeller details


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13 files, last one added on Jul 25, 2005
Album viewed 951 times

chrome tank details


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9 files, last one added on Jul 22, 2005
Album viewed 241 times

liner machining & grinding fixture


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4 files, last one added on Jul 22, 2005
Album viewed 174 times

exhaust radii cutting fixture


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3 files, last one added on Jul 22, 2005
Album viewed 173 times

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


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23 files, last one added on Jul 28, 2005
Album viewed 402 times

Non-reversed geared twins


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8 files, last one added on Sep 07, 2005
Album viewed 175 times

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


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46 files, last one added on Nov 21, 2005
Album viewed 545 times

26 albums on 3 page(s) 1

Random files - Jim Allen's Gallery
torque cradle 017.jpg
Protective shroud472 viewsThis .375 thick protective shroud is necessary because the Dynamax fan is limited to 32,000 rpm. It is mounted to the rear shaft bearing block & rotates with that same block. It serves an additional purpose of preventing the fan blast from hitting the torque craddle. Notice the air outlets on the outer, rear dia of the fan shroud. Also notice the .032 thick pointer, left of the plastic shield, which is fastened to & rotates with the main shaft. This is used to determine torque amounts. A load cell & digital readout will be added in the future. Jim Allen
crankcase, crankshaft, & piston fixtures 024.jpg
Piston wrist pin boring fixture677 viewsThis simple custom designed holding fixture is only used to drill & bore the wrist pin hole. The already machined piston boss is used to securely clamp piston blanks in the locating "V" shaped block. Notice the spring that releases the sliding clamping device for easy insertion & removal of piston blanks.Jim Allen
Engine building 027.jpg
Kalfus rudder mechanism475 viewsThis unique mechanism allowed a straight line movement of the .1875 hard steel rod on the right hand side to move the rudder. This rod was guided by the horizontal piece (on the right) seen in the picture & a bushing mounted in the transom. As the rod is moved for & aft, the crossover clamping piece moves the rudder through the two pivots seen on the left. Notice that the rod is always pulling to activate right rudder. All parts, including the pivot screws, are made of full hard O-1 tool steel. Jim Allen
torque cradle loading devices 006.jpg
2 in hexagon stock after cutting426 viewsJim Allen
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494 viewsThis fixture is used to square the side flange & cut the "V" in the fuel metering device.Jim Allen
connecting rod 004.jpg
Themac Tool Post Grinder662 viewsA tool post grinder will align grind the upper & lower holes in a connecting rod after tempering; grind liner tapers; and grind hardened steel front ends. The J-45 Themac grinder uses one spindle for ID & OD grinding. The spindle runs from 4,200 to 42,000 rpm & uses wheels from .125 to 5.0 inches in dia or borazon pins as small as .031 dia. The unit has a unique feature that allows the spindle to rotate around the motor housing. With this feature the center line of the spindle can be placed on the center line of the lathe, allowing very small ID diameters to be ground easily. Jim Allen
chrome tank 008.jpg
587 viewsA brass sleeve & ring, which holds the liner sits inside the PVC holder. This sleeve makes electrical contact with the power cables & prevents chrome build up at the top & bottom of the liner. The brass sleeve is releived in the window areas to allow liner removal after chroming.Jim Allen
gas tank 011.jpg
Outside & inside of end pieces333 viewsThe end pieces have been trimed to leave a .109 lip for soldering. Jim Allen
Deep-Groove Ball Bearing 037.jpg
904 viewsAISI S-7 tool steel that is through hardened & tempered at 600 deg F is used for crankshafts. The crank pin hole is carefully ground to give a .0013 interference fit. The sleeves are made of full hard AISI O-1, are not ground on the OD or ID, but are ground with both ends square to each other. Crankpins are full hard M-2 steel reamer blanks.Jim Allen
Deep-Groove Ball Bearing 016.jpg
985 viewsSome of the different types of front ends that have been tested. The front end mounted to the steel crankcase motor has a threaded nose to allow the use of low clearance bearings. The front end in the background was threaded into the crankcase for increased rigidity. Final assemblies are a .001 shrink fit in their crankcases. The two pieces in the lower right hand corner are sleeves which fit over the crankshaft between the inner races of both bearings. This set up allows the crankshaft & flywheel assembly to be mechanically fastened to the inner races of "both bearings" simultaneously.Jim Allen

Last additions - Jim Allen's Gallery
cable_collet_clamps_058.jpg
642 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
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545 viewsThese spring steel washers will prevent any galling of the clamping nut, even when it is tightened with great force.Jim AllenSep 27, 2007
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565 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
cable_collet_clamps_055.jpg
364 viewsJim AllenSep 27, 2007
cable_collet_clamps_054.jpg
468 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
cable_collet_clamps_053.jpg
479 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
cable_collet_clamps_052.jpg
443 viewsThe collet holding fixture is made of #316 stainless steel & is not hardened. Jim AllenSep 27, 2007
cable_collet_clamps_051.jpg
423 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
cable_collet_clamps_050.jpg
527 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
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785 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