Pitted gears in XR @ 75 hrs??
03-04-2006, 05:03 PM
#32
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Re: Pitted gears in XR @ 75 hrs??
Dont put too much faith in Imco shafts either. This came out of my SC Lower. Hopefully their newer updated shaft without the oiling hole will be better.
Last edited by Vinny P; 03-04-2006 at 05:05 PM.
03-05-2006, 10:59 AM
#33
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Re: Pitted gears in XR @ 75 hrs??
Raylar,
Thanks for the info.. I will check into it. Very interested in this process..
Thanks
Dick
Vinny,
I think the new shafts are doing better than the old ones. I still have the old one like you have! I will be tearing down the 109mph Baja drive shortly.. So far 1150hp hasnt broken the vertical shaft.. And this guy runs it HARD!! Time will tell...
Dick
Thanks for the info.. I will check into it. Very interested in this process..
Thanks
Dick
Vinny,
I think the new shafts are doing better than the old ones. I still have the old one like you have! I will be tearing down the 109mph Baja drive shortly.. So far 1150hp hasnt broken the vertical shaft.. And this guy runs it HARD!! Time will tell...
Dick
03-05-2006, 11:01 AM
#34
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Re: Pitted gears in XR @ 75 hrs??
Originally Posted by Pure Energy
Just got off the phone with mechanic. Upper gears are pitted. He said this is common wear before catastrophic failer.
Drive was abused before I bought it. At one point it had a procharged 500 efi, around 750 HP. Long WOT runs, drive oil never changed. When it was changed it was black.
I brought it in to be looked at because of hesitation when shifting into reverse.
Superboat 30 Y2k, single, 5000lbs+
Any comments/expalanations??? Or just from abuse?
Drive was abused before I bought it. At one point it had a procharged 500 efi, around 750 HP. Long WOT runs, drive oil never changed. When it was changed it was black.
I brought it in to be looked at because of hesitation when shifting into reverse.
Superboat 30 Y2k, single, 5000lbs+
Any comments/expalanations??? Or just from abuse?
03-05-2006, 11:19 AM
#35
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Re: Pitted gears in XR @ 75 hrs??
Strip, you are right, the problem a few years back were the pinion gears.
03-05-2006, 10:28 PM
#36
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Re: Pitted gears in XR @ 75 hrs??
Originally Posted by zt260
Are you getting strait cut lower gears or helical?
And are you trading to the BMAX HT with integrated streering?
And are you trading to the BMAX HT with integrated streering?
rob
rbtnt back when my buddy Mac worked at Imco He said they had the same problems with the pinion gears. It would crack/chip off a tooth on them. I went thru 3 Imco's on my Scarab. Like he said it was a maintenance item ya replaced it every year or so many hours.
They way I look at it is
its like my race car if I break a rear end gear thats just part of racing, Everybody freaks out when the little gears or shaft break 
. The shet happens .
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03-06-2006, 08:39 AM
#37
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Re: Pitted gears in XR @ 75 hrs??
Rob,
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
03-06-2006, 10:23 AM
#38
Geronimo36
Gold Member
Re: Pitted gears in XR @ 75 hrs??
Originally Posted by zt260
Rob,
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
03-08-2006, 08:17 AM
#40
Re: Pitted gears in XR @ 75 hrs??
Originally Posted by zt260
Rob,
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
I thought the helical cut gears were still just an idea. I'm glad we are still getting the same info. What parts doesn’t he have for your drives?
I'm sending out my lower today. He’s going to put the new coated gears in.
Other than warrantee, why change to the HT uppers? I didn't think there was much difference. My upper is the closest thing to bullet proof I've seen.
Dave
he sia dthe gears are in the works . He didnt have a date But , he said there in the works ?The new HT has a differant prosses heat treating/cyro/that he does to the upper parts that gives it a higher rating , He said they have a bout 15 HT's allredy out there.I been out of town dynoing my new motors and havent talked to him about when.He said he's changing to the satinless prop shafts was one thing.
Rob
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
