RCCrawler Forums

STANG KILLA SS · 06-09-2011, 07:01 PM

any body use them? how are they for strength?
what power system are you using them with?
does the lack of splines make them weak? relieing on the "D" shaped inner shaft theres really only one surface holding the power as apposed to multiple splines. how about the pins? holding up?

any other steel shaft alternatives?

klabeaume · 06-09-2011, 07:02 PM

I've had good luck with them on 2s. For my ttc rig, mip is the best I know of.

dezfan · 06-09-2011, 07:05 PM

Been running them for almost a year on my boy's Cherokee. Not throwing a ton of power at them( 12T 550), but he's is brutal on the throttle.

Be sure to use lock-tight on all of the set screws and I heat shrinked over the pins as they had a tendency to slide out.

team3six · 06-09-2011, 07:09 PM

Yeah, the set screws tend to come out quite often. But I have heard that JUNFAC has made them better by offering set screws on both sides of the shaft like the MiP's. I personally would rather use the MiP's myself, I think they hold up better.

STANG KILLA SS · 06-09-2011, 07:14 PM

all my rigs are 3S and HH 45T prowound. thoughts?

edit: i cant find any lenghts on the MIPs

team3six · 06-09-2011, 07:20 PM

Quote:

Originally Posted by STANG KILLA SS

all my rigs are 3S and HH 45T prowound. thoughts?

Yeah, MiP's are the way to go then. I have seen now 4 rigs with them and last year one of mine with the JUNFAC's. I got rid of mine and pretty much everyone who had them lost set screws.

As a matter a fact, Brian from Briansbodies lost his on a course which cost him the class. No one had the JUNFAC size and none of RGerrish's stuff fit.

Brian was running 3S with a Holmes 45T hand wound

STANG KILLA SS · 06-09-2011, 07:29 PM

besides setscrews how did they hold up? (junfacs)

heres what im getting at im wondering if the junfacs would be fine for my C1 and C2. and then get MIPs for my C3

klabeaume · 06-09-2011, 07:45 PM

Quote:

Originally Posted by STANG KILLA SS

besides setscrews how did they hold up? (junfacs)

heres what im getting at im wondering if the junfacs would be fine for my C1 and C2. and then get MIPs for my C3

That should do you just fine. The mip s will work in a scx10. That's what I am running now.

BC Racing · 06-09-2011, 07:55 PM

I run them on everything......never had an issue. Been abused on my comp rig for over a year running 3S and 35T HH. Like already mentioned use a little lock tight on the set screws and some shrink tube over the pins, your good to go. Price is right too.

Twisted Nuts · 06-09-2011, 08:01 PM

I have been running Junfac's for over a year in my Comp rig with 13.5 sensored brushless setup on 3S, and about 3mOnths on my scaler with sensored brushless 18.5 on 3S I have not had a setscrew fall out nor have I had any other problems. (use a LITTLE red locktite) yes the setscrews will still come out easily.

I personally don't like the MIP's, they are to big to use with the new spur cover, and not as smooth as the Junfac's. I have a set of MIP's in my toolbox that I have been holding onto for over a year now just In case I have a problem, but looks like I'll never get to use them

dezfan · 06-09-2011, 08:03 PM

I think the Junfacs will be fine if you follow the tips we've listed.

hotwheels000 · 06-09-2011, 11:38 PM

No problems at all with the Junfacs here.Run them in 2 different rigs. 1 has 3s and a 35 turn HH, the other is 3s and a brushless system.

Less totating mass is a good thing and the slight added clearance due to the smaller dia is a bonus

WIDELOAD · 06-10-2011, 05:30 AM

I'm running with in one of my scx's. 40t on 3s for go-go.
Never had an issue other than a couple of dropped pins at the start. The 'D' shape and everything else is still looking pretty much like new after 18months of constant abuse.

As everyone said make sure you loc-tite every thing.
Another tip to stop them dropping pins is carefully grind a flat stop on the pin for the set screw to sit on. Works like a charm.

meatmonkey · 06-10-2011, 06:02 AM

I've been abusing the Junfac Stainless shafts in my AX-10 for over a year now. They work ok.

As has already been mentioned, loctite the setscrews, and double layer heatshrink over the pins.

I've broken one pin in that time, and I didn't even know it was broken until the end of the pack because the heat shrink held the two halves in.

Their not perfect though. Really they should have a 4mm set screw, and the female D section should go the whole length of the shaft instead of only about 1/4".

The only real advantage I see over a set of MIP's is that they are a smaller diameter, which equals more ground clearance.

R2j · 06-10-2011, 08:16 AM

I run them on my FJ and even cut one down and welded it back together to use for the main shaft between the trans and transfer case. Axial trans with 35t and 3cell. Before the Axial trans I ran a R2, and they are very hard on drive shafts, never had a problem. Good loctite and the shrink sleeve is just what they need.

I like them because of the smaller size, less rotating mass.

STANG KILLA SS · 06-10-2011, 08:29 AM

GREAT posts guys. i really appreciate the input fellas!

has anyone ever used the traxxas "pin" setscrews (that come with the old school yokes we used to all use) with these junfacs? i have all my axle pinions drilled and would prefer to use the pin style set screws that go all the way threw.

JeremyH · 06-10-2011, 08:34 AM

If you are looking at high driveline angles, then you should know that the junfacs allow for less angle than the MIPs which allow for less angle than pede shafts.

STANG KILLA SS · 06-10-2011, 12:25 PM

great info. i typically run pretty flat links and shafts, but my class 1 "Babijuan" could be a problem.

just ordered 6 of them

WIDELOAD · 06-10-2011, 04:11 PM

Quote:

Originally Posted by STANG KILLA SS

GREAT posts guys. i really appreciate the input fellas!

has anyone ever used the traxxas "pin" setscrews (that come with the old school yokes we used to all use) with these junfacs? i have all my axle pinions drilled and would prefer to use the pin style set screws that go all the way threw.

Cant see why the traxxas pins wouldnt work Stang. Just grabbed one of my spare pins and they look like they will fit with a lil bit of trimming in length (on the Jato ones i've got here anyway)

BC Racing · 06-10-2011, 04:33 PM

Quote:

Originally Posted by STANG KILLA SS

great info. i typically run pretty flat links and shafts, but my class 1 "Babijuan" could be a problem.

just ordered 6 of them

Really don't think you'll be disappointed.....just use the lock tight & shrink tube! And just think of all the additional scale porn you can buy with that $100+ you just saved from not following the sheep with MIP's

06-09-2011, 07:01 PM	#1
STANG KILLA SS ~THE SCALE SHOP~ Join Date: Apr 2006 Location: KILLEEN TX Posts: 10,056	Junfac Hardened Carbon Steel Drive Shafts? any body use them? how are they for strength? what power system are you using them with? does the lack of splines make them weak? relieing on the "D" shaped inner shaft theres really only one surface holding the power as apposed to multiple splines. how about the pins? holding up? any other steel shaft alternatives?

06-09-2011, 07:14 PM	#5
STANG KILLA SS ~THE SCALE SHOP~ Join Date: Apr 2006 Location: KILLEEN TX Posts: 10,056	all my rigs are 3S and HH 45T prowound. thoughts? edit: i cant find any lenghts on the MIPs Last edited by STANG KILLA SS; 06-09-2011 at 07:19 PM.

06-10-2011, 08:29 AM	#16
STANG KILLA SS ~THE SCALE SHOP~ Join Date: Apr 2006 Location: KILLEEN TX Posts: 10,056	GREAT posts guys. i really appreciate the input fellas! has anyone ever used the traxxas "pin" setscrews (that come with the old school yokes we used to all use) with these junfacs? i have all my axle pinions drilled and would prefer to use the pin style set screws that go all the way threw. Last edited by STANG KILLA SS; 06-10-2011 at 08:42 AM.

06-10-2011, 12:25 PM	#18
STANG KILLA SS ~THE SCALE SHOP~ Join Date: Apr 2006 Location: KILLEEN TX Posts: 10,056	great info. i typically run pretty flat links and shafts, but my class 1 "Babijuan" could be a problem. just ordered 6 of them Last edited by STANG KILLA SS; 06-10-2011 at 12:48 PM.

06-09-2011, 07:02 PM	#2
klabeaume RCC Addict Join Date: Nov 2004 Location: union Posts: 1,657	I've had good luck with them on 2s. For my ttc rig, mip is the best I know of.

06-09-2011, 07:05 PM	#3
dezfan I wanna be Dave Join Date: Dec 2005 Location: Happiness is a warm AK. Posts: 12,563	Been running them for almost a year on my boy's Cherokee. Not throwing a ton of power at them( 12T 550), but he's is brutal on the throttle. Be sure to use lock-tight on all of the set screws and I heat shrinked over the pins as they had a tendency to slide out.

06-09-2011, 07:09 PM	#4
team3six www.team3sixrc.com Join Date: Mar 2008 Location: Scalerville Posts: 4,506	Yeah, the set screws tend to come out quite often. But I have heard that JUNFAC has made them better by offering set screws on both sides of the shaft like the MiP's. I personally would rather use the MiP's myself, I think they hold up better.

06-09-2011, 07:29 PM	#7
STANG KILLA SS ~THE SCALE SHOP~ Join Date: Apr 2006 Location: KILLEEN TX Posts: 10,056	besides setscrews how did they hold up? (junfacs) heres what im getting at im wondering if the junfacs would be fine for my C1 and C2. and then get MIPs for my C3

06-09-2011, 07:55 PM	#9
BC Racing Rock Crawler Join Date: Jun 2010 Location: KCRC Posts: 774	I run them on everything......never had an issue. Been abused on my comp rig for over a year running 3S and 35T HH. Like already mentioned use a little lock tight on the set screws and some shrink tube over the pins, your good to go. Price is right too.

06-09-2011, 08:01 PM	#10
Twisted Nuts Rock Crawler Join Date: Jun 2009 Location: summertown Posts: 512	I have been running Junfac's for over a year in my Comp rig with 13.5 sensored brushless setup on 3S, and about 3mOnths on my scaler with sensored brushless 18.5 on 3S I have not had a setscrew fall out nor have I had any other problems. (use a LITTLE red locktite) yes the setscrews will still come out easily. I personally don't like the MIP's, they are to big to use with the new spur cover, and not as smooth as the Junfac's. I have a set of MIP's in my toolbox that I have been holding onto for over a year now just In case I have a problem, but looks like I'll never get to use them

06-09-2011, 08:03 PM	#11
dezfan I wanna be Dave Join Date: Dec 2005 Location: Happiness is a warm AK. Posts: 12,563	I think the Junfacs will be fine if you follow the tips we've listed.

06-09-2011, 11:38 PM	#12
hotwheels000 I wanna be Dave Join Date: Aug 2006 Location: under a rock and a hard place Posts: 5,443	No problems at all with the Junfacs here.Run them in 2 different rigs. 1 has 3s and a 35 turn HH, the other is 3s and a brushless system. Less totating mass is a good thing and the slight added clearance due to the smaller dia is a bonus

06-10-2011, 05:30 AM	#13
WIDELOAD Rock Crawler Join Date: May 2009 Location: Queensland, Australia Posts: 610	I'm running with in one of my scx's. 40t on 3s for go-go. Never had an issue other than a couple of dropped pins at the start. The 'D' shape and everything else is still looking pretty much like new after 18months of constant abuse. As everyone said make sure you loc-tite every thing. Another tip to stop them dropping pins is carefully grind a flat stop on the pin for the set screw to sit on. Works like a charm.

06-10-2011, 06:02 AM	#14
meatmonkey I wanna be Dave Join Date: Aug 2004 Location: central VT Posts: 2,300	I've been abusing the Junfac Stainless shafts in my AX-10 for over a year now. They work ok. As has already been mentioned, loctite the setscrews, and double layer heatshrink over the pins. I've broken one pin in that time, and I didn't even know it was broken until the end of the pack because the heat shrink held the two halves in. Their not perfect though. Really they should have a 4mm set screw, and the female D section should go the whole length of the shaft instead of only about 1/4". The only real advantage I see over a set of MIP's is that they are a smaller diameter, which equals more ground clearance.

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06-10-2011, 08:16 AM	#15
R2j SORRCA Committee Member Join Date: Dec 2008 Location: Parkston, SD Posts: 4,523	I run them on my FJ and even cut one down and welded it back together to use for the main shaft between the trans and transfer case. Axial trans with 35t and 3cell. Before the Axial trans I ran a R2, and they are very hard on drive shafts, never had a problem. Good loctite and the shrink sleeve is just what they need. I like them because of the smaller size, less rotating mass.

06-10-2011, 08:34 AM	#17
JeremyH I wanna be Dave Join Date: Sep 2005 Location: Houston, TX Posts: 16,952	If you are looking at high driveline angles, then you should know that the junfacs allow for less angle than the MIPs which allow for less angle than pede shafts.

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