Possible motor problem with Bachmann Lyn

ge_rik

ge_rik

British narrow gauge (esp. Southwold and W&LLR)
Country flag
I recently acquired a Bachmann Lyn which I've converted to battery RC. It works ok, but doesn't have any ooomph! I can stop it from running with my finger. If I tried that with any of my other (LGB based) locos they would resist until the wheels spun on the track.

At first I thought it was a battery problem but I've recharged them and now replaced them with some brand new ones and the problem persists.

Has anyone experienced any similar problems?

Does anyone know of a UK supplier of replacement Buhler motors?

Has anyone got a suitable spare motor they will part with for a fair price?

Rik
 
I have a previously enjoyed Buhler motor - I ran it for about 20 minutes until the gearbox disintegrated, and was supposedly new old stock when I bought it. The shaft may have been filed down :oops:

Are you planning a conversion rather than a replacement as it were?
 
Sounds like the motors magnets have weakened and are in need of re-gaussing, also a commutator that needs cleaning (oil and carbon debris, and slots between the segments) and motor brushes that need replacing/reprofilling and cleaning. Familiar problem when fixing very old Scalextric car motors. It sounds like a new motor might be the simplest solution. I think any 12v rated motor with similar rated revolutions would do. Check the motor shaft diameter so you don't end up having to find a new primary gear to fit it. Max
 
Rhinochugger said:
I have a previously enjoyed Buhler motor - I ran it for about 20 minutes until the gearbox disintegrated, and was supposedly new old stock when I bought it. The shaft may have been filed down :oops:

Are you planning a conversion rather than a replacement as it were?
Click to expand...
I was aiming for a straight swap to save having too much faffing.

Rik
 
Is there any slippage on the worm gears or the axle shafts ? - enough friction to drive but when loaded they slip ?
 
There's a motor / gearbox block available in the bachmann estore in the US for $69 plus postage, plus tax, plus highwayman's fee :whew::whew::whew: but that will only fit the most recent version.
 
AustrianNG said:
Is there any slippage on the worm gears or the axle shafts ? - enough friction to drive but when loaded they slip ?
Click to expand...
Hi Paul
No. The worms and the wormwheels are tight fits. The wheels have square shafts which slot into the nylon worm wheels so they can't slip.

Rik
 
I found this on the Bachmann forum. I think they redesigned the motor block, maybe in the light of this and other feedback.

They are very poor runners, by my estimation. Geared way too high. They will not pull much and have no low speed power. Being geared so high they run like a scalded dog, overheat the motor, melt the motor mounts, and at that point end up on the rip track.

The motors have very large diameter brass worm gears. Bachmann's claim at the time they were introduced was that these heavier worm gears would act as flywheels. Maybe so, but they sure did not help locomotive performance.

The motor case is made in two halves, right and left. In order to get into the case the drivers must be pried from the nylon drive gears. Once that's done the case can be taken apart.

On balance, not a locomotive that would provide good service. It would be a shame to use a Lyn for a bash if its motor block was retained. All that work for a locomotive that won't pull much, melts its motor mounts, and is only comfortable at running at about Mach I.
Click to expand...

Rik
 
I've been looking out for a replacement motor for my Lynn, not an easy thing to find. If you are successful in replacing it with another type , can you let me know?
 
Before you go replacing the motor, how much weight is in the loco? I’ve done a number of Lyn conversationsi and I usually put the batteries in the side tanks. To do that, of course you need to take the weights that are in there out. The batteries don’t weigh nearly as much, so I add weight in the domes and under the cab roof. With only two axes driving, the first one I did, without those weights, had very little grunt.

I’ve never much problem with the actual motor. My oldest Lyn must be approaching its 16th or 17th birthday; for many years was my most used loco, and it’s still running fine.
 
You must log in or register to reply here.
Back
Top