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Old 07-19-2004, 06:24 AM   #1
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Default Heating plastic suspension parts?

I recently read a tip - can't find it now, but it must have been in RC Driver or Car Action - that you could take some slop out of your suspension by heating the plastic parts with a heat gun. They would shrink a bit, and get tighter on the hinge pins.

This sounds great for me, but before I go ahead and melt my car, I want to ask you if this is something people actually do with good results?

One of my cars (Tamiya TB-01) has a fair amount of slop even with brand new parts. Do you think it would be a good idea to try this method?

I have also heard something about boiling plastic parts to improve durability. Is this something people do in general?
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Old 07-19-2004, 06:41 AM   #2
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ok .... i've been told that u can boil the plastic parts ..
wat it does is make it harder..... becomes stronger

i've tried this once on plastic centre pulley an it did afterwards fell alittle harder ....

i don't kno bout the heaT gun ...
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Old 07-19-2004, 09:19 AM   #3
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Instead of using a heat gun to soften the parts, why not try using spacers/shims first? As for the boiling of plastics, it doesn't actually make the part harder. By putting moisture into the plastic, your making the part slightly more flexible. This allows the part to give a little during a collision. Harder = brittle = broken part. Boiling only affects certain plastics i.e. nylons.
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Old 07-19-2004, 09:51 AM   #4
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We used to boil nylon offroad arms to make them softer. Boiling actually anneals the arms (reduces internal stress) which allowed for more flex so the arms wouldn't break during a crash. With the graphite arms of today, heating won't due much good, and it certainly won't make them stronger.

If you need stiffer parts, look for new designs of graphite from the manufacturer or aftermarket parts. Xray made several revisions of the car arms to increase the stiffness by changing the arms design and not the material.
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Old 07-19-2004, 02:00 PM   #5
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another way to get slop out is apply a thin wall of CA glue to the holes and test fit for slop, add another wall if theres still play or use a drill bit to enlarge if its too tight

use shims for side way play. <---->
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Old 07-19-2004, 03:57 PM   #6
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How long do I need to boil it up??.. 1 mins 2 mins??.. just asking for clarification....
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Old 07-19-2004, 06:55 PM   #7
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bake at 350 for 20 minutes, then when a slight goo apears flip carefully.

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Old 07-19-2004, 07:05 PM   #8
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Quote:
Originally posted by Smalls
bake at 350 for 20 minutes, then when a slight goo apears flip carefully.

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Old 07-19-2004, 10:44 PM   #9
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Quote:
Originally posted by Smalls
bake at 350 for 20 minutes, then when a slight goo apears flip carefully.

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Old 07-20-2004, 12:08 AM   #10
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Default Re: Heating plastic suspension parts?

Quote:
Originally posted by Bandini
I recently read a tip - can't find it now, but it must have been in RC Driver or Car Action - that you could take some slop out of your suspension by heating the plastic parts with a heat gun. They would shrink a bit, and get tighter on the hinge pins.

This sounds great for me, but before I go ahead and melt my car, I want to ask you if this is something people actually do with good results?

One of my cars (Tamiya TB-01) has a fair amount of slop even with brand new parts. Do you think it would be a good idea to try this method?

I have also heard something about boiling plastic parts to improve durability. Is this something people do in general?
I don't recommend it. If you heat up plastic, it will cool and warp changing the characteristic of the part. Not to mention geometry.
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Old 07-20-2004, 03:08 AM   #11
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I don't recommend it. If you heat up plastic, it will cool and warp changing the characteristic of the part. Not to mention geometry.
The only heating I've know is to boil those nylon parts to make them more durable and not other materials. I like boiling those nylon parts 'cos I could add colour dye to make them look cool.

Pink arms anybody ?

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Old 07-20-2004, 05:22 PM   #12
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DO NOT BOIL the parts in your TB01/TG10/TL01/FF02 as the plastic parts are NOT nylon! They will not survive heating.
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Old 07-20-2004, 08:43 PM   #13
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Quote:
Originally posted by WC
DO NOT BOIL the parts in your TB01/TG10/TL01/FF02 as the plastic parts are NOT nylon! They will not survive heating.
So......now we know who is producing those odd looking new design parts for these cars.....you devil you.....

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Old 08-22-2004, 03:18 PM   #14
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Default Re: Heating plastic suspension parts?

Quote:
Originally posted by me
I recently read a tip - can't find it now, but it must have been in RC Driver or Car Action - that you could take some slop out of your suspension by heating the plastic parts with a heat gun. They would shrink a bit, and get tighter on the hinge pins.
I finally found the article. It was in Joel Johnson's column in the May 2004 issue of RC Car Action. It wasn't to reduce slop, though, but to get rid of binding that he would use a heat gun on the suspension. I don't have a problem with binding, but I'm still curious. Does anyone here do this? I think Joel Johnson is someone who knows what he's talking about.
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