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Ruddock controller modifier?


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#1 drrufo

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Posted 05 April 2017 - 03:57 PM

I have a customer ask me to fix a modified controller. It has the wiper array milled off and a wire wound resistor wire glued on. Does anyone know who made these controllers? I would like to send the customer to whoever did these controllers for repair.

If no one is doing these anymore, I need to know how to repair them..

John Andersen
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John Andersen
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#2 Lee Palmer

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Posted 05 April 2017 - 04:06 PM

That was a linear Speedshop conversion. Best guess without seeing a pic. The guy doing them is no longer available from what I heard.

#3 Cheater

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Posted 05 April 2017 - 04:06 PM

John,
 
What you describe sounds like the Lee Gilbert Speedshop "linear" controller modification for the Ruddock DR40. Lee did not do them, but had someone else perform the mods  (can't remember his name...) and that person stopped doing the mod and thus Lee stopped offering it. The Speedshop linear controllers usually had a small toggle switch to select between two sensitivity ranges; if you see that, it almost certainly is what I am claiming.
 
I have one that Dan modded further for me a number of years ago, and he deleted the sensitivity toggle and installed one of his diode brake pots. I think you've seen my Speedshop DR40 controller in the past, as the sealed transistor block went bad and you installed the newer version transistor block.

Gregory Wells

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#4 drrufo

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Posted 05 April 2017 - 04:17 PM

Thanks for the info.

John Andersen
DR Racing Products


#5 Ramcatlarry

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Posted 05 April 2017 - 09:43 PM

I got one of those with a kink in the resistor... it still works, but I worry about it sticking near full throttle.

Larry D. Kelley, MA
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#6 Jim Lange

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Posted 05 April 2017 - 10:00 PM

Check with Mike Mazur at: mmazur@ruzamracing.com. He can repair it.
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#7 Zippity

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Posted 05 April 2017 - 10:06 PM

I have a hand controller built by an expat Kiwi racer (15 years ago) who opened up a wire wound potentiometer to create the wiper array.
 
It still works a treat. :)

Ron Thornton
 

 


#8 Rob Voska

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Posted 06 April 2017 - 07:21 AM

What Zip said is the part that is used.  It just like a Parma wire wound resistor.



#9 Stan Chow

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Posted 08 January 2018 - 11:21 PM

I just bought one NIB (ziplock)
I read a post by Dan way back that he did his own conversions.

#10 Rob Voska

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Posted 09 January 2018 - 05:39 AM

Stan would love to see some good pics with handle removed.







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