Full-boat-tail trailer with gap-fillers for Toyota T-100 pickup

[Varn]

There are also H rated scooter tires.

americanmototire, some H rated tires

[slowmover]

I couldn't get the Goodyear racing Eagles I'd hoped for.They are no longer in production in the size I needed for the 2-wheel axle.
The 130-Club rule book requires at least an H-rated tire to run.And I can run as fast as 138 mph with an H-Rated tire,

There are plenty of truck tires in an H-rating suitable for light trailer use. I appreciate the info about going to single assembly for speed trial, but am lost, now, on the speed rating thing. Does one have to have a specific "racing" tire? (Just a yes or no would be great).

Look forwards, as always, to more!

.

[greenjoe]

Very good project. we all can do better. Thanks

[aerohead]

Originally Posted by KamperBob

Phil, IIRC your trailer previously had 8" wheels. I had no idea, initially, that you were going for speed records. Clearly, 8" wheels are out. Even if you found tires I'd bet the bearings would seize. I'd think 13" wheels might work with 4 on 4 rims and H-rated rubbers. Just playing Mr. Obvious.

Cheers
kb (@kamperbob.com/blog)

KB,back in the late 1980s NHRA Top Fuel Dragsters were running a Goodyear Eagle racing front-runner tire which was going beyond 300 mph,on 6"-8" wheels.These are what I had hoped to run but now a dead end.
My search for aircraft aero tires turned up nothing rated beyond 127-mph in the 8" size.
Scooter tires are rated up to Z,but nothing below 13-inch wheel size,which would have the wheel/tire penetrating through the top of Vikings body.
The single wheel setup,coming from a sport bike and 17-inch diameter,gives me the slower turning bearings,H-rating,and over 700-lb load rating,which exceeds the total weight of Viking,and when centered,remains within the confines of the body.
I'll have to bounce this off Jim Burkdoll,as the tech inspectors will be deferring to his judgment.He has given me conditional permission to run with the trailer up to 130 mph so long as I provide a fixing link to arrest 'wagging',and a drag chute to keep me straight down course should the rig attempt to yaw.I'll be sending him an information packet for the new 'design' and see if I can get his blessing.
I would really like to know the accurate top speed of the truck,with and without the trailer and Bonneville is as safe a venue for this sort of thing as I can think of plus it gives me close access to Battle Mountain which will be hosting the Human Powered Speed Trials during the same week.

[aerohead]

Originally Posted by Varn

There are also H rated scooter tires.

americanmototire, some H rated tires

Thanks Varn! I did find speed-rated scooter tires,but all were a minimum of 13-inch wheel size which would require massive reconfiguration of Viking,something my time budget just won't absorb if I'm to make it to Bonneville by September.
The 17" wheel tire/swing-arm/mono-shock/subframe unit ought to get me in the game and I also believe it will also serve me underneath the Beechcraft V-tail Bonanza fuselage trailer project which is also gestating.We'll see.

[aerohead]

Originally Posted by slowmover

I couldn't get the Goodyear racing Eagles I'd hoped for.They are no longer in production in the size I needed for the 2-wheel axle.
The 130-Club rule book requires at least an H-rated tire to run.And I can run as fast as 138 mph with an H-Rated tire,

There are plenty of truck tires in an H-rating suitable for light trailer use. I appreciate the info about going to single assembly for speed trial, but am lost, now, on the speed rating thing. Does one have to have a specific "racing" tire? (Just a yes or no would be great).

Look forwards, as always, to more!

.

I've got 15" Hankook (sp?) H-Rated tires on the T-100,so the truck is covered.
I'd hoped to purchase the small front-runner Goodyear Eagle racing tires as formerly used in NHRA,in a 8" wheel size ( the only thing which will fit the trailer body/wheel-well/'roofline' ) but Goodyear no longer manufactures tires that small with any kind of speed rating.Nobody else seems to make them either.Not even aircraft tires,good to 130-mph.And the Rulebook stipulates at least an H-rated tire ( any way you can do it ) to qualify to run in the 130-mph Club event.
The 17" setup will 'fit',it has the required speed rating,and more than adequate load rating.And the added benefit of slower turning bearings.
It's important that I 'freeze' the design or I'll end up like Bucky Fuller and someone will have to shoot me so something can get 'done' by early September.

[aerohead]

Finally posting photos of the rig,as of day of departure,morning after self-destructing drivers side on I-20 in Odessa,Texas,and a shot from when I got back to Denton.
You can compare the area of the trailers transom to the full cross-sectional area of the blue T-100,indicating the change in wake area accomplished by the trailers boat-tailing.

[skyl4rk]

What was the cause of the self-destruct?

[euromodder]

It seems we can get 10" tyres (165/70/10) here in Europe with H72 rating
FALKEN FK-07E or YOKOHAMA A008 - and possibly the YOKOHAMA A032R

That's what's being used on the Mini - the original, that is.

[Cd]

It would be nice to see an aerial view of your truck Phil. :-)

How much of an aero hit are you taking behind the cab of the truck ? I notice you still have the area behind the cab where the air doesn't meet-up with the aerocap.

Same question for the trailer.
Can you remind me about how much drag is created behind the truck before it makes contact with the trailer ?

Thanks and good luck