what size replacement brake lines?

[david.perl]

Im confused. Im looking to replace the Van's supplied lines with teflon braided Aeroquip lines (made up in the UK). It seems the most popular replacement lines are size 3 with AN3 fittings, however, all my fittings are AN4. Is it better to use the heavier size 4 line with my AN4 fittings or use adaptors?thxs

David

[Mitch757]

I replaced the plastic brake lines on my RV-4 with Aeroquip -3 braided teflon and am very satisfied with that setup. I did put heat shrink over the lines to reduce the abrasion chances.

On the R-12 that I am building I am going to use teflon -3 lines made by TS Flightlines. Their lines have a plastic coating over the braid.

Mitch Garner
RV12

[Andy Hill]

Hi David

Use AN816 fittings in the Brakes. You can use the NPT thread for the brake fittings, and an AN3 (or even AN2) hose.

My "research" from a UK motor racing source was that F1 trialled AN2 size hose, but found the benefits not worthwhile. Size 3 as you say probably best.

[TS Flightlines]

Most of the brake hoses I build are -4. Jay Pratt uses some -3 in the -8's he builds.