Author Topic: Myth or truth? (Read 1184 times)

Swivel · « **on:** November 08, 2007, 02:05 PM »

Just came to me... I remember when I was a kid and there was this rumour that went round that if your skyway was buckled then you could wack it in the freezer to straighten it. Is that totally bollox or not? LMK

JT71 · « **Reply #1 on:** November 08, 2007, 02:13 PM »

Bollox

oh and them coded stereos, they can be sorted by chucking em in the freezer too

and an Ebay ad this week for a Burner with a buckled mag said it could be straightened by putting it in the oven.

YGT · « **Reply #2 on:** November 08, 2007, 02:17 PM »

actually its a true myth since skyways mere made from a dupont plastic.
by changing the core temp the plastic reverts to its original moulding shape.

same as if you heat up a yogurt pot it goes back into a disk shape in which it started life

Swivel · « **Reply #3 on:** November 08, 2007, 02:18 PM »

Blimey

JT71 · « **Reply #4 on:** November 08, 2007, 02:21 PM »

Quote from: YGT on November 08, 2007, 02:17 PM

actually its a true myth since skyways mere made from a dupont plastic.
by changing the core temp the plastic reverts to its original moulding shape.

same as if you heat up a yogurt pot it goes back into a disk shape in which it started life

So heating will work but freezing won't?

but not too hot eh, unless you want your skyway to look like a plastic puddle.

YGT · « **Reply #5 on:** November 08, 2007, 03:45 PM »

I have to be honest, zytec is not a material I know too much about but I think that freezing them should do the trick.
no longer than 24-36 hours should be needed and i am not sure that after they defrost if they will hold their original straight shape ... but they should defiantly revert to their original during the freezing part

Waxintaxin · « **Reply #6 on:** November 08, 2007, 03:47 PM »

Its the thermo memory of plastic that this is based on

piper · « **Reply #7 on:** November 08, 2007, 04:17 PM »

Yeh its what is known as a thermoset,can find its way back to its origin,thermoplast on the other hand doesn`t,if someone gave you directions to a place and there were say 50 instructions ,left,left again second on the right,first left straight on ...you get the idea...you probably woudn`t find your way back..exactly the same for this type of plastic,can`t find its origin...!!!!

Moose · « **Reply #8 on:** November 08, 2007, 07:53 PM »

Try it ....................

......and I guarantee it's not going to work

Philbert · « **Reply #9 on:** November 08, 2007, 11:50 PM »

i don't know what skyways are actually made up of but either way i can't see it working

thermosets will heat up and burn, it doesn't flex, hence thermoset.

thermoplastic will heat up and go floppy before melting, to re-true a wheel it would have to be heated correctly then put back into the proper mould to get its shape

thermomemory refers to the amount of elasticity in the plastic once set. to a point it will spring back, after that the material will stretch and change its density but won't be able to find its 'original state' through heating or freezing

TwoBobRob · « **Reply #10 on:** November 08, 2007, 11:57 PM »

I always believed it to be a myth. Take a buckled Skyway off the bike, remove the tyre and tube and hang the wheel up by the axle in your shed/lounge/bedroom for a few days and it might relax back into shape. Thats about it though

Rombloke · « **Reply #11 on:** November 09, 2007, 12:05 AM »

its complete and utter bollox in regards to the freezer.

dont ask me how i know...lol

but i would say that heat may work if the wheel were put into a jig.

Dave

SaMAlex · « **Reply #12 on:** November 09, 2007, 12:06 AM »

I liked the story just because, in the 80s .... who had a freezer big enough to prove it wrong?

Rombloke · « **Reply #13 on:** November 09, 2007, 12:08 AM »

oh...useless fact.....zytel is hydroscopic....

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Dave

Flaz · « **Reply #14 on:** November 09, 2007, 12:24 AM »

geek

Trev · « **Reply #15 on:** November 09, 2007, 12:44 AM »

Quote from: FLAZ on November 09, 2007, 12:24 AM

geek

superbikedan · « **Reply #16 on:** November 09, 2007, 12:54 AM »

do you know what, after all these years it now makes sence

thanks to trevs info NO you cant straighten tuffs

thanks trev, made great reading

Trev · « **Reply #17 on:** November 09, 2007, 01:03 AM »

Quote from: SuperBikeDan on November 09, 2007, 12:54 AM

do you know what, after all these years it now makes sence

thanks to trevs info NO you cant straighten tuffs

thanks trev, made great reading

dan.....

that was dave's info, not mine....

Bob_Acid · « **Reply #18 on:** November 09, 2007, 03:42 AM »

Bart at Skyway dispelled this myth long ago.

get with the programme people

MeddlE · « **Reply #19 on:** November 09, 2007, 08:42 AM »

Quote from: S&MAlex on November 09, 2007, 12:06 AM

I liked the story just because, in the 80s .... who had a freezer big enough to prove it wrong?

I did, but I didn't have Skyways. My step-father was a master butcher so we had a large chest freezer in the garage. Not sure it would have been appreciated if they found a set of wheels sitting on top of the meat though.

Nicfred · « **Reply #20 on:** November 09, 2007, 11:31 AM »

everybody said the same,chuck em in the freezer and bingo they will come out straight,never tried it but can stiil remember,wonder who started that then,WAS IT YOU

tricknuts · « **Reply #21 on:** November 10, 2007, 01:36 AM »

defintely not a myth

put fish fingers in the freezer and they'll go hard

Nicfred · « **Reply #22 on:** November 10, 2007, 11:24 AM »

yeh right

jT Racing · « **Reply #23 on:** November 10, 2007, 01:46 PM »

LOL, i can't believe this myth is still around, some geek should get a letter off to mythbusters, cough, cough, dave, cough. Let the supergeeks teach the way.

Author Topic: Myth or truth? (Read 1184 times)

JT71

YGT

JT71

YGT

piper

SaMAlex

Flaz

Trev

Trev

MeddlE