Fitting IIA 88 Tub

[stonefox]

Its 12 and 13 I dont see what they seal.Do they keep crude from going up and over the filler tube underneth the hose clamp.

[jac04]

The seal is sandwiched between the tank and the tub, which slightly compresses the foam and forms a seal.

[Terrys]

It's a seal. The holes in the tub for the fuel filler are oversized. The seal keeps little creatures, dirt, etc. from getting inside.

Does it work as well as the door seals, vent seals, windshield top gasket, front and real crank seals, output shaft seals, axle seals and swivel ball seals ? Probably.

[JackIIA]

Most US fast jets since the century series have had arrestor hooks. Its quite common for air fields operating these jets to have arrestor gear in place on the runway.

well...i'll...be...damn'd.

didn't know that.

[LaneRover]

Most US fast jets since the century series have had arrestor hooks. Its quite common for air fields operating these jets to have arrestor gear in place on the runway.

Dammit! We can't even make fun of the commies any more!

[siiirhd88]

I used to build runway arresting systems back in '81. There were several different types, but all had steel cables attached to thick nylon ribbon on reels. As the aircraft tailhook grabbed and pulled the cable, the ribbon unwound off the reel causing it to rotate. As the reel rotated it spun a hydraulic pump that actuated an aircraft type disc brake on the inside of the drum, slowing it down. An electric motor or gas engine would then retract the ribbon and cable. The gas engines used were two cylinder Wisconsin THD or TJDs.

The cables were held off of the runway surface by a series of hard rubber discs, or held below the runway surface in a trough by air operated actuators. When needed the control tower would release air pressure and the actuators would pop the cable above the surface, held in place by a slit rubber block. The tailhook would then just pull the cable out of the blocks.

In all cases some labor was required to rewind the reels or pop the cable back into the slit rubber blocks before the cable was lowered back below the runway surface.

The neatest system was portable, with the retract reels mounted on trailers. The trailers could be bolted in place at pre made locations (all along the autobahn) or could be set down alongside a runway or roadway. A large hydraulic drill would drive large screws into the ground thru holes in the trailer, and PSP runway sections would be burried alongside attached to the trailer by large turnbuckles. The PSP would give a large surface area to resist rolling the trailer over.

We also made the large nets and towers that would lift up to catch the runaways. I had the opportunity to be an installer overseas, but instead left the business for commercial nuclear power.

Bob

[JackIIA]

Very cool Bob. Simple in concept but complex in execution.


Sean - you were right about those tabs. Straight from the source (Marsland) they are indeed to attach the seat belt female ends to the frame. PO incorrectly installed mine on the tub wall and changed the belts out (I believe). That was enough to throw me off.