just brought a cap 232 with a zenoah 45 on it .there is a tank on it for the smoke system what puts diesel down the exhaust is there any way of making the smoke a colour instead of white .

I was going to post that as a joke, but then thought why it wouldnt work. Maybe powdered or liquid coloring, but it would most likely discolor your covering, staining its way in.

You're best bet is to stick with the regular white.

To the best of my knowledge(which isnt much at times),the full scale airshow guys use pyro stuff, similar to flares, that burn phosphorus and powder to get the colors.

I would love to build a bipe with smoke on the fuse, and different colors for the wingtips, but I don't see that happening in my near future

Good luck, and let us know if you stumble across anything

thought of that but did not think about the discolouring thanks

You are over on the other side of the pond, could you get away with any kind of pyrotechnics? The AMA has outlawed it here (something about being able to launch rocket powered projectiles at high velocities that could rapidly decellerate against ones vital bodily parts, lol). We got some giant smoke tubes, called mammoth smokes, and were going to put them on the wingtips of a 1/4 scale cap, but were afraid of the repercussions, not to mention the extreme fire hazard and drought conditions we had last year. Although if our field had gotten scorched, it might get rid of those pesky briar bushes that seem to reach out and grab brand new covering. They never go after your old, ugly plane, they go for the brand new, took me 400 hours to cover and is all shiny plane.

I've seen a model with these attached to the wingtips. Looks pretty cool! Only problem is they don't last too long and tend to scorch/melt covering. A couple layers of tinfoil seemed to protect the covering well enough.
Pyrotechnics, unfortunately, are a no-no with the AMA. Make sure when you do it everyone at the field is aware of what you are doing and O.K.s it. (Getting barred from a club is not a good thing!)

Jeff

Check this out. I took a hose clamp , fastend it to the bottom of the fuse, stuck in a mamouth smoke and had a good 3 min. of smoke. Could not beleive it lasted that long- the reason- mount the smoke bomb with fuse to the back, the air blows back causing to burn slower. What a blast, with no oily mess.