Hi 9.. (1 Viewer)
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Rascal
SILVER Star
Check w/ Lance @ Sunray. He' got one and was going to test it. It's a normal ring gear running on the coast side. It's got a "stop" that rides on the back side of the ring gear on the opposite side of the pinion gear. Supposed to place an opposing force since - again - it's force is being applied to the coast side of the ring gear.
I'd be afraid that the "stop" would become a balistic comming out of the side of the dif case...
Lance?
I'd be afraid that the "stop" would become a balistic comming out of the side of the dif case...
Lance?
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Lance didn't sound too sold on it when we discussed....
did see a pair in Attica on a buggy project and they are VERY bling!
did see a pair in Attica on a buggy project and they are VERY bling!
Mace said:
If it is used in the front it does.
These guys almost had something here. The fact that they still use r/c gears means, like all r/c D60s, if used in the rear the pinion runs on the coast side of the ring gear.
Poser said:
I would run one in the front, but no, I would not pay the money they want for that 3rd and run it in the rear.
If you have the need for a high pinion rear due to a short driveline, I would just do the R/C 60.....Rockcrusher has the best price on these.
Think about what you are saying....wngrog said:If it is used in the front it does.
These guys almost had something here. The fact that they still use r/c gears means, like all r/c D60s, if used in the rear the pinion runs on the coast side of the ring gear.
If you flip the diff over you are running the Drive side of the gears if they are reverse cut..
Just like flipping the diff over you are running the "coast" side of the gears.
Mace said:
I know what I am saying, i just don't know what you are saying.
All R/C gears are made the same to date. These guys did nothing different, but move the pinion location on the r/c gears.
THis is not a Currie where they moved the pinion location on 8.8 gears, these guys did something original and moved the place the pinion contacts the reverse cut 9" ring gear.
The problem is, when you move a reverse cut ring gear from the front to the rear, you run the pinion on the "sloped" side of the ring gear, or the coast side.
This weakend the ring and pinion abot 30%. Is that strong enough for most? Sure, but it is not "the strongest 3rd in the world" like they advertise.
When we run normal ring and pinions in the front of our rigs, we run them on the coast side. Not a big deal since the front sees 30% less torque than the front.
That is why r/c gears were invented. Reduce the strength loss when used in the front. That is why 80 series have r/c 8" gears in the front. They work fine, just don't add them to the rear of a mini axle and expect them to hold up.
I can’t believe I going to say this, and it will probably never happen again, but Nolen is right. They are reverse cut, which means they are driving on the coast side of the gear when used in the back (make yourself a drawing, it'll come to you). That is why there is a thrust block; they are attempting to lessen deflection (which you don’t really have in a std. situation). I set these things up and got it moving last night. I drove it around to break in the gears. Time will tell, but I suspect that this will probably not work for me. Those that know me might claim that I could destroy an anvil with a Nerf hammer, and they are right. Big tires, big motor, stiff competition among the group, and very little regard for parts have brought me to run what I run. That doesn’t mean this wouldn’t work for smaller rigs, even the (shuttering to say) Currie HP has a place.
The placement of the pinion is nice but it didn't change my overall angles that much. I only adjusted my lowers out a little and I was back in line with the shaft. I attempt to explain this to people all day but they never understand so I’m not going into it, but right now the benefits don't outweigh the likely (definite) loss of strength IMO. I never really have any problems running a low pinion, and my ability to murder has been proven.
Only time will tell, and I hope to get some serious testing done before the end of Feb, I don’t like working on my truck at events. I can assure I have a spare 3rd ready to go right back in, in the event the thrust block, as Bruce put it “becomes a ballistic”.
I’ll let you know.
LG
The placement of the pinion is nice but it didn't change my overall angles that much. I only adjusted my lowers out a little and I was back in line with the shaft. I attempt to explain this to people all day but they never understand so I’m not going into it, but right now the benefits don't outweigh the likely (definite) loss of strength IMO. I never really have any problems running a low pinion, and my ability to murder has been proven.
Only time will tell, and I hope to get some serious testing done before the end of Feb, I don’t like working on my truck at events. I can assure I have a spare 3rd ready to go right back in, in the event the thrust block, as Bruce put it “becomes a ballistic”.
I’ll let you know.
LG
Eskimo
SILVER Star
I'm guessing you can't use regular 'ol 9" gears in this thing, huh?
Doesn't make sense why they'd use reverse cut gears, since they keep touting it as a replacement for the REAR third, which we'd want on the drive side of the gears...(duh)
Their test rigs (pictured on their site) suck... how much abuse are they really putting on something running leafs (with no traction bar), those 3-4" blocks, and the slide in shims?
If Lance is running it, I look forward to hear of its demise. (Your reputation precedes ya)
Doesn't make sense why they'd use reverse cut gears, since they keep touting it as a replacement for the REAR third, which we'd want on the drive side of the gears...(duh)
Their test rigs (pictured on their site) suck... how much abuse are they really putting on something running leafs (with no traction bar), those 3-4" blocks, and the slide in shims?
If Lance is running it, I look forward to hear of its demise.
(Your reputation precedes ya)
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Eskimo said:Their test rigs (pictured on their site) suck... how much abuse are they really putting on something running leafs (with no traction bar), those 3-4" blocks, and the slide in shims?
it makes even less sense that their test rigs were running open differentials...
woody said:
Lance says 350 HP and 4# of pressure on the street made some NASTY noises but so far no thrust block spittage
As of today 5-19-06 ZERO Hi9 breakages or oiling issues. The NASTY noises refered to were from a foreign piece of metal wedged between the pinion gear and the oil scraper. The unit with the NASTY noises is running today with the original bearings, gears, and thrustblock.
Thanks
Thanks
truehi9 said:
Good deal. Posers monster is a good test bed. Serious weight there, puss of a driver though
One day about 1 1/2 to 2 years ago Lance at Sunray told me (Chris) that the weak point in their killer low pinion setup was the Detroit. At that point we thought "WOW" we wish we could say that about ours. His words certainly must have been true. Kenny Blume, a comp guy running a Hi9 since last season, busted the guts in his Detroit at an event two weeks ago. Upon disassembly to replace the Detroits' inners he found that everything else was "in like new condition". He talked to Scott, one of Detroits higher ups, and he told Kenny that they were working on building a stronger Detroit for the 9 inch but it probably wouldn't be available till next year sometime. We're starting to think we can say the same thing concerning the Detroit about ours.
I will also say that Lance has always been more than willing to answer questions to help a guy out if he can.
Thanks
Chris
I will also say that Lance has always been more than willing to answer questions to help a guy out if he can.
Thanks
Chris
I have been running 35 spline 9" Detroits hard with a heavy foot for 5 years. I took my first one out this year, but it was a result of a total axle tube failure and then driving out with a broken axle housing.
They are reputed to be the weak link, however, they are damn strong.....strong enough for 99% of the folks out there running them.
Ken's situation is a little different. Even though his car is 2200#, the shock load these comp guys put on their drivetrains out there is insane.
You dont hear about is because most of the comp guys are sponsored by the "RC D60" manufacturers, but the #1 thing they break on a routine basis in comps is reverse cut D60 gears. If your stuff is holding up in the rear in the comp world you have a great product.
They are reputed to be the weak link, however, they are damn strong.....strong enough for 99% of the folks out there running them.
Ken's situation is a little different. Even though his car is 2200#, the shock load these comp guys put on their drivetrains out there is insane.
You dont hear about is because most of the comp guys are sponsored by the "RC D60" manufacturers, but the #1 thing they break on a routine basis in comps is reverse cut D60 gears. If your stuff is holding up in the rear in the comp world you have a great product.
