Need tips for making cowl blisters
 

Anyone have advice for covering the cutouts I made in my cowl for spark plug clearance?

Thanks!

Mark

RE: Need tips for making cowl blisters
 

I've glassed in the end of a plastic spoon before. Blisters from small toys work too. Just have to find one the shape you need. ;)

RE: Need tips for making cowl blisters
 

I have seen people use half of a wheel pant..

RE: Need tips for making cowl blisters
 

I have just used glass cloth and epoxy, pushing the cloth through the opening and forming it to shape with my finger. A little filler around the edges blends it in .

RE: Need tips for making cowl blisters
 

I made these bumps/blisters from balsa, then glassed them.

RE: Need tips for making cowl blisters
 

Hobby shops carry a line of small canopies in varous sizes that can be used also.

RE: Need tips for making cowl blisters
 

Hi,

The blisters from spinner packs come in various sizes. You may find this site of help in many areas, http://www.airfieldmodels.com/
Paul has a wealth of knowledge.

Cheers,

Colin

RE: Need tips for making cowl blisters
 

I saw a thread somewhere (can't remember, it might have been on RCU) where someone used plastic easter eggs and cut the appropriate sections from them to make blisters. Have not tried this myself, but It looked really neat and you can get these in various sizes to match your application. Depending on how you cut the section, you can get somewhat elliptical or spherical sections.

Steve

RE: Need tips for making cowl blisters
 

Great tips - keep 'em coming! There are a lot of ideas here I wouldn't have thought of.

RE: Need tips for making cowl blisters
 

you can use microballoons or Bondo putty for making lumps and bumps

RE: Need tips for making cowl blisters
 

If your application is not very big, you can also use pushrod exits like these ones:

http://www2.towerhobbies.com/cgi-bin...?&I=LXK061&P=M


Joseph