Throttle Quadrants

[Jeff Brooks]

Baron von Blutwurst,
The large lever is for the throttle, and the smaller lever is for the mixture. I am told by Achim, that this version mixture was used on the BMW powered DVII. There is another lever for the spark advance just in front of the throttle & mixture.

[Baron von Blutwurst]

Thanks Jeff.....how does that throttle interact with the units on the control column though?

Cheers
Randy

[Jeff Brooks]

That's a good question. There is a bowden cable that makes a loop to both sides of the throttle lever at the bottom. When one moves, the other follows. There is no visible method to change the friction on the throttle, but there is a tightening screw and friction spring on the aux throttle. And an optional detent that gets screwed to the top of the aux throttle for high altitude throttle settings.

[ulpilot]

Originally Posted by Jim Bruton

Vet,

As you can see from my recent postings on the DR-1 Sands site, I love my quadrant. Thanks so much for taking some of these detailed projects on and providing them to us for purchase. Here's a question for everyone- how do you paint the inscribed plate one color and the inscribed letters another? Seems like you would rub color into the letter area, and then use a very smooth and flat roller with a thinned paint to paint the plate. I wasn't able to figure this out and I know this is a really detailed question, but you never know who knows! I was even wodering about using 2 different solvent based paints whereby one would simply bead up on the other and be easily removeable.

Many thanks again,

Jim

Jim,

A little praise from one's peers sure does brighten the day! Thanks for the compliment. I thought you did a really nice job with the Zebrawood handles.

On painting the placards, have had limited success with spraying the engraving, then using unthinned paint on a printers (hard rubber) roller. It may be a problem with my technique, works sometimes and not others.

Vet

[Baron von Blutwurst]

thanks again Jeff...so in essence, if the sidewall throttle unit is moved---the contol column unit will follow the same movement?

Cheers
Randy

[Jim Bruton]

Willem,

In this case, the writing is inscribed into the metal, so it is lower than the plate's surface, and only slightly so. Otherwise, yes, with raised lettering it would be easier. It is only a cosmetic question- Vet's work is great.

Randy, I assume this is true for the past, but at this time the large handle controls the throttle and the small handle is the mixture (gas:air ratio).

Thanks!

Jim

[Makhpiyaluta]

Originally Posted by Jim Bruton

Willem,

In this case, the writing is inscribed into the metal, so it is lower than the plate's surface, and only slightly so. Otherwise, yes, with raised lettering it would be easier. It is only a cosmetic question- Vet's work is great.

Randy, I assume this is true for the past, but at this time the large handle controls the throttle and the small handle is the mixture (gas:air ratio).

Thanks!

Jim

Jim,

First paint your text then ad the second color with a rubber roller don't put to much pressure on it.

Willem

[Jim Bruton]

Thanks Vet & Willem,

I thought about it some more- the letters aren't deeply inscribed, so it's hard to paint them a different color. I was thinking though about one possible solution- i could probably paint on a very thin coat of wax over the whole thing (or a water soluble "release" of choice). While the wax is soft, or using gentle heat to maintain the softness, then I could gently scrape the wax off, roll a light coat of paint onto the plate very thinly and use one that beads up on the wax. Then let it dry. Standing it up on edge in a pan and putting it in an oven at 250-300 degrees or so might then cause the wax in the letters to melt and run out of the letters- leaving your letters the original metal color, contrasting nicely with the (for me) black plate. I have also used an eletric iron with newspaper underneath to lift wax out of tablecloths, maybe that would work as well.

It's just a thought, and I won't belabor your thread further with this detail... I am 100% happy with your work!

Jim