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Cox Engines Forum  :: Models and Modeling :: Models and Modeling

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Help! Cox car engine pull start return spring

Post  happydad Fri Sep 25, 2015 6:51 pm

Does anyone know where to get a Cox car engine pull start return spring?

I've searched several spring manufacturers and the narrowest spring they make is 1/2 inch like a measuring tape. I think the one in the pull start engine is 1/8 inch or less.

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Help! Re: Cox car engine pull start return spring

Post  getback Sat Sep 26, 2015 8:19 am

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Help! What are they gold plated?

Post  happydad Sat Sep 26, 2015 2:33 pm


Looks like the right part, but wow a lot pricey. Thanks for finding them for me. I looked for 3 hours last night. Spring, coil spring, tape measure spring, etc. I found a company that makes the material, but the minimum width is 1/4 inch.
   Thanks getback.

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Help! Re: Cox car engine pull start return spring

Post  roddie Sat Sep 26, 2015 3:24 pm

Is yours broken at the end.. or is it missing altogether? I was thinking if you had all the pieces, you might be able to fashion a new end on the band-spring by using a small file or grinding a notch(es) with a dremel. I'm guessing that it's usually one end that breaks. Is there a slot in the housing to accept a "T"-shaped end? Another possible source for those little band-springs might be in these little retractable badge fobs. They're cheap enough to try..

retractable fob

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Help! Good idea

Post  happydad Sat Sep 26, 2015 3:36 pm

roddie wrote:Is yours broken at the end.. or is it missing altogether? I was thinking if you had all the pieces, you might be able to fashion a new end on the band-spring by using a small file or grinding a notch(es) with a dremel. I'm guessing that it's usually one end that breaks. Is there a slot in the housing to accept a "T"-shaped end? Another possible source for those little band-springs might be in these little retractable badge fobs. They're cheap enough to try..

retractable fob

Cox car engine pull start return spring Recoil10

Well, the spring was rusted, corroded into hundreds of small pieces so your idea of the retractable fob looks better and better.  I'll check out your link.

p.s. i ordered 2.

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Last edited by happydad on Sat Sep 26, 2015 3:59 pm; edited 1 time in total (Reason for editing : to add data)
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Help! Re: Cox car engine pull start return spring

Post  roddie Sat Sep 26, 2015 4:35 pm

I had a fob that I took apart. The width of the band is .159" and it's approx. 26" long.

Here's what the "hook-end" looks like.

Cox car engine pull start return spring Dsc02910

It attaches through a slot the spool. The other end just has a bend to fit through a slot in the center post of the housing.

Cox car engine pull start return spring Recoil11

I expect that most of these are made the same way. Do the innards of your spring-housing look anything like this?

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Help! great

Post  happydad Sat Sep 26, 2015 6:01 pm

roddie wrote:I had a fob that I took apart. The width of the band is .159" and it's approx. 26" long.

Here's what the "hook-end" looks like.

Cox car engine pull start return spring Dsc02910

It attaches through a slot the spool. The other end just has a bend to fit through a slot in the center post of the housing.

Cox car engine pull start return spring Recoil11

I expect that most of these are made the same way. Do the innards of your spring-housing look anything like this?


yup. that's what it is. can i have it?  lol!
  and i ordered 2 of the fob things from china. they take 2 weeks to get here, so i won a car engine with pull start minus gas tank.

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Help! Re: Cox car engine pull start return spring

Post  crankbndr Mon Sep 28, 2015 6:40 am

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Help! Thanks

Post  happydad Mon Sep 28, 2015 7:11 pm


Thanks. I put in my bid. It is an auction, so you never know.

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Help! Re: Cox car engine pull start return spring

Post  crankbndr Mon Sep 28, 2015 7:20 pm

You got a good shot, it didn't sell so was relisted.
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Help! Re: Cox car engine pull start return spring

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