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Post by dave632 on Oct 29, 2014 5:34:57 GMT -7
Tried using toothpaste as a break in method and it turns into a sticky gel after a little while. Actually stops the motor from turning at 4-5 volts. I have ordered a recommended actual break in liquid. Anyone else had this problem or is my toothpaste the wrong one, Crest?
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Post by kdog on Oct 29, 2014 6:08:09 GMT -7
Tried using toothpaste as a break in method and it turns into a sticky gel after a little while. Actually stops the motor from turning at 4-5 volts. I have ordered a recommended actual break in liquid. Anyone else had this problem or is my toothpaste the wrong one, Crest? Dave I have used finishing rubbing compound (the white stuff with minimal grit size) for years. I makes very little mess, and does what I need it to do. I use a tooth pick to pack it around the brass gears, you may have to move it back around the gears a couple of times as it runs. It does slow the motor when it is on the gear plate, but when removed with water and a toothbrush always makes for a smoother running quicker T Jet motor. I run the motor around 3 or 4 minutes with the compound on the gear plate. I have tried the toothpaste only long enough to piss me off (at the mess it made everywhere) so is it better or not I really can't say. |
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Post by pceng on Oct 29, 2014 7:29:52 GMT -7
Have used toothpaste , compound, silver polish, combinations of these. Built damms around top plates to contain the different goops. IMO, nothing works as fast or as good as sanding gears. Results are seen and heard almost immediately. Have not done anything else since the first time I tried this. When time permits I sand the gears that have already been lapped. And get better running cars everytime !
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Post by jjwallace on Oct 29, 2014 8:39:28 GMT -7
I still use toothpaste and add a little oil to it to make kind of a slurry. Keeps it from drying out like that. Semi chrome polish is what I've always heard to use, but it will have the same result of drying out. Toothpaste makes them minty fresh  |
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Post by ks1933 on Oct 29, 2014 9:35:25 GMT -7
I use red metal polish on a small soft wheel with a dremmel at slow speed. I cut grooves in the wheel to get between the teeth, I do the gears out of the chassis, no mess. It might take longer but it works for me. |
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Post by pceng on Oct 29, 2014 11:26:24 GMT -7
A quick how to on sanding....... WARNING ! ! You may find this the most efficient way of creating a smooth drive train.
Use a fine grit paper , 1000 or finer..... 1200 grit is my choice. Remove all.gears except for gear on arm shaft and re-assemble chassis so it will.run hooked up to power supply. Use low voltage..... 9v works good. Cut strips of sand paper so they can fit between post on plate and raised rail side of plate.
Before starting put drop of oil on paper and gear. Don't be afraid to use to much oil...... gets cleaned up later. Hook up pwr to chassis (I use small clips that hook in windows on shoes). While running slip paper under gear...... abrasive side to gear. This may cause binding. But work paper in & out until you reach shaft. Once shaft is reached you should notice difference in RPM. Before installing second gear (idler) also do outside edge of first gear. Then repeat process for idler (with clip on chassis), and then cluster gears. Outside edge or tips of teeth are probably most important on idler since it connects other gears. Idea is to remove enough material from outside edge of gear so that there is a space between tip of teeth on one gear and bottem of V formed by teeth on next gear (I use magnifying glass to check.progress). SHOULD SAY AGAIN USE OIL ON EVERY GEAR AS THEY ARE ADDED. Do not want any undo stress on motor.
After all gears are back in chassis and sanding is done disassemble and clean. Then re-assemble, oil lightly.......
Bet dollars for donuts your chassis will.run smoother than possihle any other way......... after getting used to doing this , should omly take about 5 mins. to do whole process.
Take your time when first trying this......... listen to your mtr. You will hear difference in RPM after every step.
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Post by dave632 on Oct 29, 2014 16:17:49 GMT -7
Thanks for the replies. I will give these methods a try, I guess I was not the only one the toothpaste turned to goo on. Peter, think I have some 1000 grit around somewhere, will give that a try too.
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