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Paul, You are on the right track. IM does have power glass side windows on their newer Speedsters. Henry indicated that they worked well but I have no experience.

The windshield shape of the IM Conv D Roadsters and the SAS Cabriolets makes the situation much better and solutions for these cars seem in hand.

I suspect the SAS series of Speedster leakage videos will eventually cover everything that is out there with analysis. Hopefully, SAS will add a new wrinkle to this issue.

Development is indeed expensive and the solutions may be complex and costly. These aspects may discourage most of the assemblers. Perhaps this is why I opted for a coupe or maybe I'm no longer Spartan enough.

I likewhat Steve had to say about thwe larger windows. He made the windows higher for what he corrwectly calls a "jam fit" but did not do that f0r the front and rear however. The front needs to go far enough to cover the windshield post from the inside--this way the water moves along the outside of the window. My origional soft windows would actually get sucked outside the window post making a dandy funnel for water to come right inside the car. Now zero water comes in that way.

The real too needs to be made longer ---a lot longer for the same reason.

Dusty got this part right 3 years ago.

I'm anxious to sees the other vid about the metal framed windows.

My hat is off to Steve for looking into this issue!
Jack, After you commented, I went back and watched Steve's video again. I think the solution that he addressed in his video was the solution you came up with, to include the front and back edges of the side curtains as well. Actually, your solution gets pretty good marks from Steve in the area of effectiveness. As you well know, it may have some shortcomings in other areas.
Troy, remaining skeptical at this point is good. If there is a solution to a problem that has been going on for years and has frustrated many, I am willing to wait a few weeks longer. After all, making these videos takes awhile and SAS must assemble a car or two along with entertaining folks on YouTube and SOC. I remain optimistic.

I should check a post before I hit "send" It said "the real needs to be made longer" That should have been REAR. Sorry.

Good points, Charles. I too am interested in the next chapter. You and I both drive our cars rather than using them just for a Sunday morning jaunt for coffee so we are interested in weatherproofing these cars. The weather may be nice on Tuesday when I start out for carlisle but it could be far different the following week when we head for home. We can pick and choose the time for the coffee run but not the trip home---we have to deal with the weather that occurs then.
Kudos to Steve for posting these informative videos on a nagging problem that most of us have experienced from time to time.
There are several steps that are necessary to really make the tops and windows watertight. Although enlarged side curtains and plexiglass replacements help tremendously, they really are bandaids for a symptomatic issue.

I've had the pleasure of riding with Dave Mitchell in his awesome IM 911 Speedster during a decent downpour in Pismo last year. I can attest to the claim that IMs don't leak. There are three basic reasons and it doesn't involve the glass power windows.
1) Henry places the windhield post almost flush with the door edge which eliminates the 1"+ gap that serves as a waterfall during a rainy drive.
2) Along the side of the windshield post, IM speedsters have a unique piece of rubber weatherstripping that acts like a catchers mitt when the window rests against it. That piece of rubber extends down and connects to the door weatherstripping, acting like a downspout on a house. Henry sent me a piece of this material and it is quite flexible. Unfortunately, it won't work with the forward windshield placement.
3) Probably the most important is the fully articulating scissor-framed top. It stays taut, regardless of speed. I am thankful that both Alex from Fibersteel and Mango Man are doing a pictorial development for retrofitting to our pan-based replicas. No matter how big or how snug you make your side curtains, when you get up past 70 mph that loose top heads for the heavens. I know a few people have experimented with strategically placed sticks and turnbuckles. Somewhat of a "blue tape" approach but, whatever works, right?
Anyway, I commend Steve and everyone else who has experimented for the benifit of all of us here.
BTW, there is a good pic in Dave Mitchell's photos that shows windshield placement and weatherstripping. Take a look if you're interested
https://www.speedsterowners.com/files/view.asp?sf=777joee&f=P1050367%2Ejpg
Never noticed the post placement before. Holy Crap, it is really rearward towards the door edge. Got a good look at Sloane's car and it shows well. Are the steel Speedster w/shields oriented this way? Gonna have to look at that.


EDIT: Heck yeah, the steel ones are at the edge too. My freakin' w/shield is over an inch forward!

~WB
I finally got around to viewing all three videos (been a little busy around here lately).

"Solution 3" is a variation on what I did on my top and side windows, but I altered the top with another seam to cinch up the double flap at the top of the window to make it all seat better. Do they still suck out a little when I go by a Semi on an interstate? Yup, but they still seal and keep water and air from coming in, so it CAN be done, even if it's not perfect. I also made the rear edge of the side window overlap the so-called "pocket" just behind the door such that it can't become a scoop. That helped a lot. So I can just get into the car and (carefully) close the door and everything closes up and seals about as well (maybe just a bit better) than Steve's solution 3.

I'm waiting for the next solutions. I believe Steve's really on to something........
Stan, One of the official state songs of Tennessee is "Rocky Top", a bluegrass country song. It is referring to a mountain near Knoxville. Perhaps when this thread is completed, we can petition to have it changed to "Floppy Top".

Meanwhile, I suppose we will have to be content with Robert Mitchum singing "Thunder Road". Or maybe stop in to see if Geraldine is at home.
Rich, have you gotten your car yet?

When you have a opportunity take it out in a driving rain and go about 60 mph and then report back to the Forum how it performed.

I know my 356A Cabriolet does not leak, I experience probably the worst condition you would want to drive in and I posted my comments at:

https://www.speedsterowners.com/forum/readmsg.asp?t=22887

So when you have driven your car in a rain storm, let us know how it "doesn't leak".
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