Stator insulation - RC Groups
Thread Tools
May 20, 2005, 02:53 PM
Registered User

Stator insulation


There is a liquid called "tool dip" I think, it is used to plastic coat the metal handles of tools, plyers for example, when this stuff cures it is a firm rubber like surface, one coat is about 1/32 thick not thick enough for a tool, but good enough for our needs. I'm going to get some tool dip and do some testing, I'll follow up with my findings... unless someone else had already done this?

Charlie F
Sign up now
to remove ads between posts
May 20, 2005, 04:10 PM
Registered User
Fishnut's Avatar
Have not tried that stuff in particular, but I have not had good results using anything soft. The wire just mashed through it at the corner.

Good luck,

Kurt
May 20, 2005, 04:19 PM
Same Day Delivery
mike3976's Avatar
I had a chance today to examine a 12 pole stator from a drill motor, it was not insulated and the cornors of the slots were lightly ground smooth with a small radius, why wont this work for our needs too, I'm about to try it on a GB 12 tooth stator.
May 20, 2005, 05:02 PM
Night Flying
Ron H's Avatar
I haven't used it on a motor as a dip due to obvious drawbacks. It will barely cover the corners where it's most needed, yet it will readily fill the area between the teeth and coat the ends. Less copper, same risk.
May 20, 2005, 06:16 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Don't forget to bevel/dhamfer the edges.
Last edited by Ron van Sommeren; Sep 24, 2017 at 06:50 PM.
May 31, 2005, 04:19 PM
Registered User
Just wrap 2 or 3 turns of teflon pipe threading tape around them. it is thin and very heat resistant. I have used this in motors and transformers for years with no bad results.

Dale
May 31, 2005, 06:17 PM
Registered User
landru's Avatar
After trying heat-cured epoxy coatings and quite a few different kinds of tape, the best I've found is this UHMW tape. The link is to leevalley.com, but I think the tape is a 3M product. This tape is very tough!

To use, simply apply two layers of tape to each 'flat side' of the stator, trim around the stator circumference, and then make slits in the tape between the stator teeth. The excess tape folds over into the stator slots when you wind the stator, forming very effective insulation. For the GB stators, chamfering the sharp edges before applying the tape is highly recommended.

Andrew
May 31, 2005, 08:30 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Quote:
Originally Posted by dwentz
Just wrap 2 or 3 turns of teflon pipe threading tape around them. it is thin and very heat resistant. I have used this in motors and transformers for years with no bad results.
Dale, teflon is not a good idea, it flows under pressure, see item #7:
https://www.rcgroups.com/forums/showthread.php?t=240993
http://groups.yahoo.com/group/lrk-torquemax/message/153

Vriendelijke groeten Ron van Sommeren
e-motor building tips & tricks
diy outrunner discussion group
int. E fly-in & diy outrunner meet, August 28th, Nijmegen, the Netherlands
May 31, 2005, 09:20 PM
It flies? I like it!
Gunkote baked PTFE/Moly. Chamfer the edges with a swiss file, spray it on, bake for an hour. Tough as nails! Just did two 25 mm GB stacks today. Never had it fail.
May 31, 2005, 10:30 PM
CD-ROM Junkie
Art Newland's Avatar
Quote:
Originally Posted by Lomcevak
Gunkote baked PTFE/Moly. Chamfer the edges with a swiss file, spray it on, bake for an hour. Tough as nails! Just did two 25 mm GB stacks today. Never had it fail.
http://www.brownells.com/aspx/NS/Sto...20GUN%20FINISH
May 31, 2005, 10:44 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Glass and epoxy, baking paper (pictures):
http://www.modellflug-hager.de/lrk.htm
May 31, 2005, 11:23 PM
Registered User
After many trys to rewind a PJS motor that had been stripped to bare metal and many, many shorts later I was able to rewind it actually twice (decided to go from Y connection to Delta) without a single short.
I used some stuff called Insulating Cambric cloth.
It's a yellow cloth, fairly thin and very flexible and will insulate up to something like 5000 volts.
I cut two circles slightly larger then the front and back of the stator, glued them on with CA, cut slits between the stator teeth and wound it.
I cut off the excess after it's wound.
I've been fying with that motor for a few months now.
If anyone wants some it's available from quite a few sources on the internet.
Jun 01, 2005, 12:00 AM
Suspended Account
Bilbobaker's Avatar
Quote:
Originally Posted by mgdon
A
I've been fying with that motor for a few months now.
If anyone wants some it's available from quite a few sources on the internet.
Can you post us a link.
Thanks
Bill
Jun 02, 2005, 06:23 AM
Proud to be a Belgian.
rafgol's Avatar

3M Cambric tape..


http://products3.3m.com/catalog/us/e...er/output_html

Can be found in smaller quantities too, I think.
Jan 21, 2006, 09:58 PM
Registered User
I thought I'd post to this older thread rather than opening a new one. Has anyone tried vacuum forming on their stators? I built a very simple vacuum box, and my 1st attempt is shown. Probably 3 stators at once was too much. I used .015 styrene. I've also attached a pic of the simple vacuum box made from a Radio Shack project box. I'll give this a few more tries before I pass judgement on the technique.

Tony Turley


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
methods for stator insulation Ron van Sommeren Power Systems 0 Oct 21, 2005 09:56 AM