os 50 hyper not runing good

[Toro]

Its a crankshaft thing that causes the bearings to go bad on the hyper. The crank has a webbing off the back side of the counter weight on the crank. This is the only OS motor that does this I believe. If you remove this webbing the problem goes away. It takes a dremel, and about 1/2 our of your time. the problem is the bearings dont get enough oil, and the little bit they do get is sitting after it runs because the web wont allow it to drain off. The oil sits on the bearings, and being contaminated with the methanol base of the fuel causes "HYDROPHELIA" to take over... IE Water being attracted to the evaporating methanol. This causes rust, and rust causes failure. When you remove that web, it allows the fuel to drain off, and also increases oiling during the running of the engine. OVER all the HYPER I believe is still one of the, if not the best bang for your buck in the 50 market. Full of power, and reliable as all get out. I can handle a bearing replacement twice a year if need be. Heck the RC car guys replace bearings after every 8 tanks, or at least the race guys do.

[alexz]

O.S. has to know.
So being that they are the most popular 50 class engine on the market why don't they fix it.
Maybe all of us have to start sending in are engines.

I heard that tt is coming out with a new engine.
It's going to be a RL 53 or something like that.
So maybe it has more power and less problems.

[Toro]

yea... TT Red Line 53 is coming.... I have seen one in action... very impressive...

[alexz]

When is it going to be available?
And how much?

[GMoney]

Its here! Seen the production. ..Had one in my hands Friday the thing is BALLISTIC!!!

GMONEY

[GMoney]

	Quote: Originally Posted by Toro
	Its a crankshaft thing that causes the bearings to go bad on the hyper. The crank has a webbing off the back side of the counter weight on the crank. This is the only OS motor that does this I believe. If you remove this webbing the problem goes away. It takes a dremel, and about 1/2 our of your time. the problem is the bearings dont get enough oil, and the little bit they do get is sitting after it runs because the web wont allow it to drain off. The oil sits on the bearings, and being contaminated with the methanol base of the fuel causes "HYDROPHELIA" to take over... IE Water being attracted to the evaporating methanol. This causes rust, and rust causes failure. When you remove that web, it allows the fuel to drain off, and also increases oiling during the running of the engine. OVER all the HYPER I believe is still one of the, if not the best bang for your buck in the 50 market. Full of power, and reliable as all get out. I can handle a bearing replacement twice a year if need be. Heck the RC car guys replace bearings after every 8 tanks, or at least the race guys do.

T, have you done this mod? I would like to do it to mine ASAP!

GMONEY

[Toro]

yea.. very easy... take a cutoff wheel, and cut several vertical relief cuts in the web. Than take as much off as you can with the cut off wheel. finish the rest off with a good grinding wheel, but dont get into the counter weight... only flush with it... This is the part that takes the time to get it right. Slower is better.

[GMoney]

thanks T, If I buy another set of bearings for that motor I'm gonnna Well (Buy another set)

G

[alexz]

toro

Could you get some pecs for this mod.
I think this is something that I'm going to want to do with my O.S.
When I get one.

[Toro]

Im going to be pulling one of my HYPERS shortly for bearing re-build. I will do this and document "HOW TO" I have a couple of articles coming up shortly on LE as far as setup, and beginner heli stuff. Ill put this one in too.

[alexz]

thx that would help a lot

[BarracudaHockey]

Don't bother, the crank web mod isn't a fix for the bearing problem.

Some of them go in a gallon, some last forever. I've tried ceramics, crank web mods, after run oil, no after run oil, running dry, letting it sit with fuel in it, it doesn't matter. The only thing the crank web does is void your warranty.

I believe that the rear bearing is under spec'd for the power this thing produces. The YS uses the same bearing and I'll be pleasantly surprised if the Red Line has a different one because the TT 50 uses the same rear bearing as the OS, though it doesn't put out anywhere near the power because of the smaller throat and crappy carb.