International Waters Community

International Waters Gallery


hydraulic dynamometer details


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35 files, last one added on Nov 09, 2005
Album viewed 811 times

torque cradle dynamometer details


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28 files, last one added on Mar 15, 2006
Album viewed 529 times

bell valve type induction


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10 files, last one added on Jul 16, 2005
Album viewed 434 times

fuel metering carburetor


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12 files, last one added on Jul 17, 2005
Album viewed 482 times

30,000 rpm machined steel tuned pipe


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8 files, last one added on Jul 17, 2005
Album viewed 349 times

propeller details


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13 files, last one added on Jul 25, 2005
Album viewed 1136 times

chrome tank details


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9 files, last one added on Jul 22, 2005
Album viewed 379 times

liner machining & grinding fixture


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4 files, last one added on Jul 22, 2005
Album viewed 303 times

exhaust radii cutting fixture


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3 files, last one added on Jul 22, 2005
Album viewed 319 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 608 times

Non-reversed geared twins


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8 files, last one added on Sep 07, 2005
Album viewed 319 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 802 times

26 albums on 3 page(s) 1

Random files - Jim Allen's Gallery
Engine building 024.jpg
20,000 rpm gas engine pipe485 viewsJim Allen
paint spraying equipment 002.jpg
Inside view of jar cap modification222 viewsThe siphon air bleed hole can be clearly seen at the bottom of the aluminum ring. The metal pickup tube has been cut & rebent for the proper location in the glass jars used. A 100 mesh stainless filter is fastened to the end of the tube for final filtering.Jim Allen
Deep-Groove Ball Bearing 004.jpg
412 viewsThe pressure pad with the red locking screws holding it away from the bearing is mounted with stripper bolts. Note the reading of .0000 on the indicator dial has been set for the initial reading simply by positioning the bearing. Also notice the red mark on the bearing outer race, at the six o'clock position, that is needed for orientation. Jim Allen
cable_collet_clamps_016.jpg
319 viewsJim Allen
P7160025.JPG
598 viewsThis fixture is used to square the side flange & cut the "V" in the fuel metering device.Jim Allen
torque cradle loading devices 005.jpg
Six sets of "T" shaped blades493 viewsOnly five sets of blades will be used. The extra blades were made to insure a good fit in the hexagon hubs.Jim Allen
Engine building 013.jpg
the need to know & rpm's destroy engines not HP849 viewsIn order to determine the rpm limit of the S-7 "I" beam connecting rod, this .80 engine was dyno tested at 38,000 rpm. After about one minute running time the rod failed completly! The carburetor used had a .750 bore; the exhaust timing was 198 deg; the transfer timing was 130 deg & the boosts 125 deg; the inverted drum valve opened 30 deg ABDC & closed 66 deg ATDC; the two stage pipes tuned length was 8.75 in; & the fuel used was 65% nitro. Jim Allen
piston cut-away 003.jpg
Tools used for engine work615 viewsOn the left are two types of torque wrenches used to tighten head bolts. Over tightening, under tightening & un-even tightening can result in many problems. My 8 (8-32) head bolts are tightened to 22 in lb of torque. Clean unplated alloy steel screws are used with no lubricant when tightening the head bolts. The strobe on the left is used in the darkness to detect the movement of parts during dyno pulls. What can be seen is very surprising, especially during wide open throttle runs! Jim Allen
cable_collet_clamps_054.jpg
625 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 Allen
cable_collet_clamps_018.jpg
324 viewsA .0001 indicator is used for accurate location.Jim Allen

Last additions - Jim Allen's Gallery
cable_collet_clamps_058.jpg
845 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
cable_collet_clamps_057.jpg
705 viewsThese spring steel washers will prevent any galling of the clamping nut, even when it is tightened with great force.Jim AllenSep 27, 2007
cable_collet_clamps_056.jpg
720 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
511 viewsJim AllenSep 27, 2007
cable_collet_clamps_054.jpg
625 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
638 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
591 viewsThe collet holding fixture is made of #316 stainless steel & is not hardened. Jim AllenSep 27, 2007
cable_collet_clamps_051.jpg
567 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
682 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
cable_collet_clamps_049.jpg
988 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