Castle 1717 - Page 17 - RC-Monster Forums

snellemin · 12.14.2009, 10:06 PM

aargggh, mine is not here yet.

Urgeoner · 12.15.2009, 12:03 AM

Got mine 2 days ago. Definitely want to look into overcoming the 6mm obstacle and using it on my Muggy.

Unsullied_Spy · 12.15.2009, 12:34 AM

I bought a 3" pocket stone (coarse, of course) from Ace hardware and permeated the thing with 3-in-1 oil, hooked up the 1717 to my MMM, and held it at full throttle for short bursts while I pressed the stone into it. I only do short bursts and then stop to let it cool but so far I've been at it for 2 hours and still have some grinding to do before it's done. I tried a magnet and a paper towel but nothing seemed to be able to keep all of the metal shards out of the front bearing and now it's making a bit of noise. I've been cleaning it out and flushing 3-in-1 oil through it but I suspect I will need to replace it

Why oh why couldn't they give us a 5mm shaft....

lincpimp · 12.15.2009, 12:46 AM

Quote:

Originally Posted by Unsullied_Spy

I bought a 3" pocket stone (coarse, of course) from Ace hardware and permeated the thing with 3-in-1 oil, hooked up the 1717 to my MMM, and held it at full throttle for short bursts while I pressed the stone into it. I only do short bursts and then stop to let it cool but so far I've been at it for 2 hours and still have some grinding to do before it's done. I tried a magnet and a paper towel but nothing seemed to be able to keep all of the metal shards out of the front bearing and now it's making a bit of noise. I've been cleaning it out and flushing 3-in-1 oil through it but I suspect I will need to replace it

Why oh why couldn't they give us a 5mm shaft....

Plastic baggie is your friend... Put the motor in, seal it up and push the shaft out. You motor is sealed.

I am really not looking forward to doing this when my 1717 comes in...

Unsullied_Spy · 12.15.2009, 01:44 AM

Hmm, that could work as long as the friction between the shaft and the bag isn't too much. I am ordering a new bearing anyway, by the time I got the shaft ground to the point that I could get the pinion far enough on the front bearing was seriously jacked up. I measured it at 6x16x5, shouldn't be too tough to find...

BrianG · 12.15.2009, 01:51 AM

Looks like Mike is gonna have to start making some Mod1 and Mod1.5 pinions with 6mm bores. Turning down the motor shaft sounds like too much of a PITA IMO.

Unsullied_Spy · 12.15.2009, 02:16 AM

It is a major PITA. Took me about 3 hours, a lot of patience, and wore through part of a grinding stone. Should prove to be a very good shaft, judging by what it did to my stone

bruce750i · 12.15.2009, 04:49 AM

I can re-size your motor shafts. pm me.

It's worth it!

1717 6s

The 1717 stayed under 90*F pushing 10-12lb in loose stuff geared 50ish!

I think I was pegging it on 4s, on 6s I ran out of space real quick.

No hot wires, no hot lipos, MMM's fan ran for 20 seconds after stopping.

Unsullied_Spy · 12.15.2009, 02:53 PM

What did you use to trim yours down? Looks like it should be an excellent MT/heavy truggy motor, once we get a 5mm shaft

bruce750i · 12.15.2009, 03:22 PM

Dermil with the cut off wheel & sanding drum, motor in a mount, heat shrink tube cut short and layered up a bunch on the shaft to cover the bearing, magnet, zip lock, set transmitter end point to med-slow motor rpms. I used a 4s for grinding power but 2s,3s would have safer no load rpms. Zip lock did kind of suck, it would grab and try to twist up around the shaft, unless the hole was to big to do much anyways, but it kept the dust of the rest of this beastly motor. Then just stroke the shaft nice and easy. I held the cut off wheel rotated about 30* from axis of the rotating shaft to help maintain squareness.

Unsullied_Spy · 12.15.2009, 03:32 PM

The sanding drum was enough to trim the shaft down to 5mm?

lincpimp · 12.15.2009, 03:51 PM

I have a technique that I plan to try.... I will set it up and take some pics.

lincpimp · 12.15.2009, 05:50 PM

OK, here we go.

So I used my drill press, 2 axis vise and some dremel and larger grinding stones. Took about 20mins, and that was with me constantly checking it and letting it cool.

Pics tell the story.

Unsullied_Spy · 12.15.2009, 06:11 PM

That came out clean! 20 minutes has me jealous, I was grinding on mine all night.

lincpimp · 12.15.2009, 06:16 PM

Quote:

Originally Posted by Unsullied_Spy

That came out clean! 20 minutes has me jealous, I was grinding on mine all night.

Its not too bad, I tried a bunch of pinions on it, some are slightly tighter than others... But it works.

Now I get to reassemble the lst and give it a try. I also have to make a tray for the zippy 5k 40c 6s pack... Maybe this weekend... No time.