Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!

General TD Crank Limit Question Cox_ba12

Log in

I forgot my password


Display results as :

Rechercher Advanced Search

Latest topics
» Another Cox .010 converted to R/C & P-51 Mustang.
by balogh Today at 12:52 am

by GallopingGhostler Today at 12:47 am

» Murphy Laws of Modelers
by GallopingGhostler Yesterday at 10:33 pm

» Who invented the throttle ring?
by GallopingGhostler Yesterday at 8:46 pm

» Baby bee basics
by Rskeifer Yesterday at 8:04 pm

» Bob. The carnival is over!
by pman1111 Yesterday at 7:49 pm

» New to vintage engines
by pman1111 Yesterday at 7:42 pm

» A good day, Black & Decker, music, nasty engine, stencils
by rsv1cox Yesterday at 6:09 pm

» Decals for Models
by latole Yesterday at 3:35 pm

» 1965 Aston Martin, cox powered
by rsv1cox Yesterday at 3:32 pm

» music vids.. some of your favorites
by rsv1cox Yesterday at 3:26 pm

» A Wen-Mac ; any information ?
by latole Yesterday at 3:19 am

Cox Engine of The Month

"Summer time!" with a Cox Conquest .15

CEF Traveling Engine

Win This Engine!
Forum Store
CEF Ear Savers

General TD Crank Limit Question Empty

General TD Crank Limit Question

Go down

General TD Crank Limit Question Empty General TD Crank Limit Question

Post  Yabby Thu Aug 26, 2021 9:17 pm

I am running a somewhat different TD jigger compared to most people on here who are more traditional in using what is proven to work. My jigger works very very well for what I need and using my android phone RPM Gauge app, it is usually running at 22/23k on the bench. My app might be inaccurate and the revs lower. Anyway I am not tach racing, or racing my planes, just flying them for sport fun and having a blast on the weekends. I am using standard Cox Glow head and 3 gaskets, 25% castor, 25% nitro, 50% methanol, 5 x 3 prop and I tend to needle back to about 20k before launch as this is plenty powerful for what Im doing.

My main question is based around stuff I have seen on other forums saying the TD cranks start breaking after 26K. I wondered what people here have experienced with their TD cranks. As I said, Im nowhere near that, but am interested as would like to get good life out of my cranks. I do polish my cranks with 400/600 grit before assembly and keep my piston well set, as its not hard to take the cylinder off to check the piston is set ok, and if not quite simple to take off the backplate and reset, and no gaskets!!! Thumbs Up cheers But I do use a little bit of Anaerobic Permatex on the crankcase and backplate mating surface. The other thing I was wondering is do the cases wear faster than the cranks. Like is it common for a crank to live in several crankcases over its time? I assumed the cranks would be harder than the case and the case would wear quite a bit quicker?

Not critical questions to my flying or use of my engines, as I only needle my jiggger to what is needed which at 20k seems below the stress points. The other great think is the TD is soooo light compared to my beloved surestart engines. Just questions out of pure interest as to what people have learnt and experienced about this over the years.

Gold Member
Gold Member

2021 Supporter

2022 Supporter

Posts : 227
Join date : 2021-06-08
Location : Murray River

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum