Monday, 14 June 2010


Or, to put it another way, does anyone know and effective method of removing Loctite 601?

In a burst of enthusiasm (okay, free time) on Friday and today, I finished off the Pug mechanically. This has not been without its trials and tribulations... In particular, it's only after assembling the whole thing that I found that there wasn't enough running clearance for the connecting rods to oscillate as needed between the original slidebars. Cue careful use of a dremel.

But the problem that I now have is this. Having followed the instructions to the letter, I tested everything out, and fixed the final drive gear on the driven axle with a tiny smear of superglue. This done, and suitably cured, I set it running on my rolling road.

After five minutes, the gentle whirr of the motor continues, but the rotation of the wheels stops. The gear wheel has slipped on the axle. It could actually be moved easily from side to side within the gear box.

So this time I reached for the Loctite 601, and intended to leave it to set firmly overnight. However, to avoid getting 601 where it wasn't needed, and knowing that it sets slowly, I applied some to the gear wheel with it in the middle of the gearbox and well away from anything else. I then intended to slide the gear wheel sideways until it meshed with the drive gear. You can tell what happened next...

Instant bonding. How come 601 never works this way with wheels? Whether it was because the axle was warm, I don't know, but what should have been fifteen minutes of adjustment room was changed into instantly setting solid with the gearwheel in the wrong place.

I've tried a little physical persuasion and it hasn't budged. The alternative to loosening the glue is to dismantle most of the chassis - not something I'm pleased with contemplating.

Can anyone suggest a non-destructive way of freeing off Loctite 601?


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