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Post by loco8107 on Mar 5, 2019 11:28:46 GMT -8
I got a Proto GP15-1 used not long ago and while it runs very well it makes a little bit of noise reminiscent to an Athearn unit at very low speeds. Unlike the well running Atlas master 38 I have, this unit starts without much throttle at all (Tech 4 power pack).What is my remedy here ?
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chet6
New Member
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Post by chet6 on Mar 5, 2019 19:29:34 GMT -8
Broken axle gears,Had to change mine on all my proto loco's
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Post by loco8107 on Mar 6, 2019 8:13:59 GMT -8
Broken axle gears,Had to change mine on all my proto loco's Years ago I had the old Walthers GP15’s and never had that issue. I guess this is something with the newer ones like the one I have? |
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Post by loco8107 on Mar 6, 2019 8:15:27 GMT -8
Who makes good replacements?
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Post by loco8107 on Mar 6, 2019 8:17:20 GMT -8
I also noticed it barely takes any throttle to run the 15 but my atlas 38 which runs very well takes a lot more throttle to even get it at slow speed. I know different manufacturers play a role here but I use only DC not DCC and I’m not going to run them together anyway but I’m just wondering if there’s anything I can do to the atlas unit to make it run without having to use so much throttle first .
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chet6
New Member
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Post by chet6 on Mar 6, 2019 15:00:53 GMT -8
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Post by loco8107 on Mar 6, 2019 15:51:24 GMT -8
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Post by brakie on Mar 6, 2019 16:22:32 GMT -8
Before you rush out and buy new gears try listening to the gears if there is a clicking noise then its a crack gear or gears.No clicking noise try a good old fashion very light oiling and lube where needed.
I have one and its a very smooth runner.
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Post by loco8107 on Mar 7, 2019 11:31:14 GMT -8
Before you rush out and buy new gears try listening to the gears if there is a clicking noise then its a crack gear or gears.No clicking noise try a good old fashion very light oiling and lube where needed. I have one and its a very smooth runner. It’s a little bit of a loud noise only when I run it at slow speed. I had the original ones in the early 2000’s and they were very quiet. Thankfully I still have a very reliable LHS near where I live that I’ll probably take it to and have him run it and see what it is. |
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Post by brakie on Mar 7, 2019 12:24:42 GMT -8
Before you rush out and buy new gears try listening to the gears if there is a clicking noise then its a crack gear or gears.No clicking noise try a good old fashion very light oiling and lube where needed. I have one and its a very smooth runner. It’s a little bit of a loud noise only when I run it at slow speed. I had the original ones in the early 2000’s and they were very quiet. Thankfully I still have a very reliable LHS near where I live that I’ll probably take it to and have him run it and see what it is. Sounds like a loose flywheel.. Taking it to your LHS is a good idea since they can hear the noise and diagnose the problem. |
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Post by redvdub1 on Mar 19, 2019 16:54:18 GMT -8
Athearn axle gear p/n 60024..search for it..they're common. You'll need it for ANY proto diesel(except for SOME E8s)...and even for old Athearns..it's an easy replacement..you'll need an NMRA track gauge.
The start problem is probably because your power supply has lost it's zero...very common...not fixable...sounds like the non-zero setting will start the Athearn unit but not the Atlas...if it keeps drifting it eventually wlll start the Atlas.
Get a new supply.
Good luck.
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Post by graftonterminalrr on Mar 19, 2019 18:16:21 GMT -8
The Walthers GP15-1 does NOT use an Athearn clone truck. The Athearn gears will NOT work in this truck. Happily this model does NOT suffer from cracked gear syndrome.
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Post by lvrr325 on Mar 19, 2019 18:48:46 GMT -8
However the proto 1000 one the OP has does use those gears.
Best way to determine if loose, turn the engine over, try to rotate the wheels with your thumb. If you can move any wheel the gear on that axle is cracked.
Typically the noise from these will be a clunk-clunk-clunk that varies with track speed.
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Post by grahamline on Mar 21, 2019 12:52:54 GMT -8
The very first run of the GP15-1 by Walthers did have an axle gear that made a rattling noise because the tower gears and the axle gear were not well matched. This came out several years before Walthers ever thought of acquiring Proto and has nothing at all whatsoever to do with Proto's split gear issues.
NWSL offered a replacement wheel and gearset that made it less noisy but I no longer have a part number for that piece. A shop with a deep back stock of NWSL parts might be able to help. I doubt that NWSL has any left, but you could try. Myself, I'd be inclined to live with the noise if it cannot be eliminated with shimming.
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Post by loco8107 on Mar 24, 2019 11:18:31 GMT -8
Athearn axle gear p/n 60024..search for it..they're common. You'll need it for ANY proto diesel(except for SOME E8s)...and even for old Athearns..it's an easy replacement..you'll need an NMRA track gauge.
The start problem is probably because your power supply has lost it's zero...very common...not fixable...sounds like the non-zero setting will start the Athearn unit but not the Atlas...if it keeps drifting it eventually wlll start the Atlas.
Get a new supply.
Good luck.
It’s a Proto not Athearn but I never heard of that issue before. What power packs are not too expensive brand new today? If I’m going to replace it, I will go with brand new this time. I used to have a Genesis GP15-1 a few years ago and it ran great with the pack too. Only the Atlas unit has a higher starting speed. Maybe too much grease on the gears? I just got it used but it was barely run. |
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Post by lvrr325 on Mar 24, 2019 23:24:05 GMT -8
Proto 1000 and 2000 four-axle trucks on the Alco and EMD locomotives (except switchers) are a clone of Athearn parts; the Athearn gear interchanges directly.
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Post by loco8107 on Mar 26, 2019 5:39:03 GMT -8
However the proto 1000 one the OP has does use those gears. Best way to determine if loose, turn the engine over, try to rotate the wheels with your thumb. If you can move any wheel the gear on that axle is cracked. Typically the noise from these will be a clunk-clunk-clunk that varies with track speed. I tried that before bed last night. Thankfully there’s no play in any of the wheels. |
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