fiberglass vacuumbaged cowl long style

[harpo]

getting ready to make the mold for one piece complete cowl , plug is done will keep every one informed. Big job ,lookin good , keep ya posted on progress hope to have #1 3-4 weeks , see ya HARPO !!

[astjp2]

Re: fiberglass vacuumbaged cowl long style

I just bagged my exhaust farings, I got a few pointers from TCB composites, they made my life easer. If you want verbal help, give me a shout. Tim

[harpo]

Re: fiberglass vacuumbaged cowl long style

tim
Thanks for your intrest , have some experence wiht baging fooled around alot with 1/4 and1/3 r/c fiberglass fuselages , but you can never have enough help ,gotta get alittle closer to making the first one , ill talk to you and contact your guys THANKS HARPO !!!

[VictorBravo]

Re: fiberglass vacuumbaged cowl long style

Are you sure you want composite materials close to the exhaust system? As far as an exhaust fairing, is there an advantage to composite versus formed aluminum?

As far as a bagged carbon cowling... I'm interested in hearing more. THAT is something we can use if the first guy can get it field-approved.

May I suggest that you use a known, approved, certified, documented fire resistant resin when you make it? May I also suggest you look into using the exact same resin that was approved on previous certified airplane cowls?

You might have a very useful product that can put more Taylorcrafts in the air, and put some money in your poscket.

Keep us posted !

Bill

[astjp2]

Re: fiberglass vacuumbaged cowl long style

Well I have seen about a dozen aircraft with Hanlon Wilson exhaust and none have a problem, Maule and a lot of homebuilts use composite cowlings and fairings where high heat is present. I dont think that CAR04 has an issue with fire resistant anything considering that NITRATE is used on the fabric when our aircraft were first certified. I would be more worried my fabric looking like Wile E Coyote going up in a flash before the cowling ever had a chance to burn. Tim

[tim]

Re: fiberglass vacuumbaged cowl long style

wow thats what im lookin for its it going to be able to go on a tcart that has an o-200 ???

[N74DV]

Re: fiberglass vacuumbaged cowl long style

Are you sure you want composite materials close to the exhaust system?

our flying club's PA-28 181 has a fiberglass cowl and there is a fairing where the stacks exit. It's a tight fit too with maybe .5" gap around the stacks. Been that way since the late 70's with no problems as far as I can tell.

[harpo]

Re: fiberglass vacuumbaged cowl long style

thanks for the interest in this project. little background, over 40 years experience as body shop owner and technician. added a little more clearance in the first left cylinder for head and exhaust, but it's not noticible to the eye. will give enough clearance without any heat problems. going to be final coat of prime, block and paint by monday. will start laying up mold ASAP. i will keep you guys up to date. maybe we ought to go for a field approval, make this a good part to keep the old girls flying.
cya,HARPO!!!

[tim]

Re: fiberglass vacuumbaged cowl long style

thanks harpo keep up the good work

[astjp2]

Re: fiberglass vacuumbaged cowl long style

Hey Harpo, I have many rolls of tooling cloth if you need some for your mold, its real heavy and a heavy weave..I think that each roll is about 100#. Tim

[ricky]

Re: fiberglass vacuumbaged cowl long style

That sound like great Ideal,lots of t-craft in manitoba need new cowl,
mind not bad,but new one be great,keep up the great work.
Ricky

[harpo]

Re: fiberglass vacuumbaged cowl long style

Guys , going to put prime on the plug this weekend , going to make them available to the public if any one is interested . need to get pictures of the molding detail that is on the blue and yellow cowl at the to of the page , that would be a nice touch to add before making the mold , can any one locate any good pictures of the complete detail of maybe I can put that molding detail on the plug prior to laying up the mold , that looks cool , would give you alota posibilities for a wild paint lay out !! drop me aline if any one has picks HARPO .

[Hank Jarrett]

Re: fiberglass vacuumbaged cowl long style

That detail runs all the way around the front to make up a different grill than the post war ones and back to the door handles. I have some of the original pieces (one full set of side moldings and a complete set of the grills, though the side moldings are NOT mine). If someone was willing to make molds and GRP fake moldings we could work a deal. I need to return the side pieces so they can't get messed up in the mold making process. I just haven't had the time to make copies.
Hank

[VictorBravo]

Re: fiberglass vacuumbaged cowl long style

Harpo, do not put the detail for the trim pieces in the molds. As someone mentioned, there are several different versions of trim, so you cannot pick one to be the right setup. Spend your effort and time making the parts FIT on the firewall right, and that extra half inch clearance on the #2 cylinder exhaust stack area.

In my humble opinion as a four time Taylorcraft owner, please consider making the mold for a TWO piece cowling instead of a THREE piece cowling. Make the "nose bowl" section integral to the top and bottom main cowlings. That way you can take everything off without removing the propeller.

Go Harpo!!!

Forrrrrr He's a Jolly Good Fellow.....

[Hank Jarrett]

Re: fiberglass vacuumbaged cowl long style

A little clarification on what Bill said. Make the nose bowl SPLIT into a top and bottom section with the bottom on the lower cowl and the top on the top cowl. A series of screws to lock them together will make the bowl as strong as a one piece.
Hank

I hope that was what you intended. If not just chalk my statement above to "oldtimers"