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Telma CC135

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(@force26)
Posts: 8
Member
Topic starter
 

Hi,

I bought couple of Telmas from junkyard... I would like to disassemble them for cleaning and rewiring. How can i uninstall coils? They seem be stuck on centerpiece. 

Another thing, if someone has adapters to mount Telma to the pillow bearing block and so on i am interested to purchase.

Cheers,

Timo

 
Posted : 28/12/2017 11:03 am
(@walter)
Posts: 244
Member
 

I hope this help:

http://www.telmausa.com/TELMATECHWEB/DOC/PDF/CC%20PARTS%20OC443003e%2007-98.PDF

What kind of adapter do you means exactly? for shafts? 

first off you need to know what flange type do you have, if you can shoot some pictures may help, also that's normally all custom made.

 

 

 
Posted : 29/12/2017 12:43 pm
(@force26)
Posts: 8
Member
Topic starter
 

I am familiar with those pdfs. I probaly have to start disassembly from broken coil.

My Telma is like this one

https://www.dba.dk/eddy-current-bremse--telma/id-1032907907/

And something like this is my goal

So i need similar adapters as you Walter have in your hub dyno. Only them have place for sbc flexplate and maybe flange for 1310 driveshaft. I have planned to use Volvo Penta bellhousings, sterndrive drive shaft with flange and omc/mercruiser driveplates for connection. And start from chevy, bbford and volvo redblocks

 

 
Posted : 29/12/2017 6:52 pm
(@force26)
Posts: 8
Member
Topic starter
 

I am familiar with those pdfs. I probaly have to start disassembly from broken coil.

My Telma is like this one

https://www.dba.dk/eddy-current-bremse--telma/id-1032907907/

And something like this is my goal

s123.photobucket.com/user/Boxxersix/media/dyno1.jpg

So i need similar adapters as you Walter have in your hub dyno. Only them have place for sbc flexplate and maybe flange for 1310 driveshaft. I have planned to use Volvo Penta bellhousings, sterndrive drive shaft with flange and omc/mercruiser driveplates for connection. And start from chevy, bbford and volvo redblocks

 

 
Posted : 29/12/2017 6:55 pm
(@walter)
Posts: 244
Member
 

Hi, i can't see the photo . 

 
Posted : 29/12/2017 7:39 pm
(@force26)
Posts: 8
Member
Topic starter
 

Here is that photo attached

 
Posted : 29/12/2017 9:39 pm
(@slider)
Posts: 16
Member
 
Posted by: Force26

Hi,

I bought couple of Telmas from junkyard... I would like to disassemble them for cleaning and rewiring. How can i uninstall coils? They seem be stuck on centerpiece. 

Cheers,

Timo

Hi

The only way i got the coils removed was to destroy them. I had to rewind all coils in my CC200...

-Arttu

 
Posted : 30/12/2017 11:51 pm
(@force26)
Posts: 8
Member
Topic starter
 

It was PITA to remove poleshoes, so coils are about the same. I measure coils next week and if they are good i only rewire.

Did you make some sort of coilwinder for rewind?

Timo

 

 
Posted : 31/12/2017 4:49 pm
(@slider)
Posts: 16
Member
 

I made coils with lathe witch had lap counter and stand for coil wire.

Make sure you do a resistance and insulation resistance measurement with 1000 volts. Thats only way to find out does the old coils really work...

-Arttu

 
Posted : 31/12/2017 10:28 pm
(@force26)
Posts: 8
Member
Topic starter
 

Good point, i have a megger to use... so you made adapters also by yourself? There is small machine shop makin transmissions etc for rally quite near where  i live, im gonna gather my parts and ask if they can make shafts.

Timo

 
Posted : 01/01/2018 9:52 am
(@slider)
Posts: 16
Member
 

Yes, i made the adapter shafts myself. With a small manual lathe it was bit PITA to make them 🙂

Im sure any machine shop can make these adapters pretty easily.

 
Posted : 01/01/2018 10:55 am
(@rub87)
Posts: 9
Member
 

Do you know what the resistance should be when I measure the coils at the wire going to the controller? Ive bought 2 CC135 of a guy using them as dyno before and he said he just used 220v mains with a rectifier and chopper to control it. When I measure the terminals where the wires to the power supply go I measure around 3.4 on one and 4 Ohm on the other brake. there are 2 wires joined at each post but cant distinguish any colors. when i read the Telma manual they are stating 0.75 Ohm per Stage, but I dont really know what a stage means. If it would be wired to be 30 Amps at 192v I would expect something like 6.5 Ohm 🍕

 
Posted : 11/01/2023 8:25 pm
(@admin)
Posts: 1195
Member Admin
 

Hi,

A stage is one coil. You have 16 coils so you should see 16 x 0.75 = 12 Ohm. This will give around 16 Amps at 192V. 

If the retarder is wired for 96V you will see something like 4 Ohm. I recommend rewiring to 192V, as this will significantly lower the current. With 96V the current is double for half the time and nothing on the other half, so the mains are loaded very spikily. 

Rewiring means all coils are in series. Just ensure the coils receive the same polarity as before and it will be fine. 

 
Posted : 11/01/2023 9:06 pm
(@force26)
Posts: 8
Member
Topic starter
 

Hi Jostein,

As i read rewiring coils should be done with copper wire, any ballpark figures on gauge?

 

 

 
Posted : 11/01/2023 10:16 pm
(@rub87)
Posts: 9
Member
 

For 16 Amps 14 awg is plenty. 2.5mm in europe =)

 
Posted : 12/01/2023 12:19 am
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