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Flattening an NSR chassis


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#1 SlotsNZ

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Posted 16 April 2018 - 08:43 AM

Decided a car I had already been setting up, was in need of flattening.
I have the pod screwed up tight, dummy motor and axles to keep the pod and axle holders straight. A sliver magnet under the guide to stop it sagging, while it is pinned from above by magnets.

The small triangle of weight behind the guide is there for life.

As per the picture, I gave it the same boiling water/plate treatment I would give a Ninco, Slot.it or Scaleauto - anything else with a basically flat under-pan.
By chance it sat in the cooled water a couple of days. When I removed it yesterday, the chassis tried to curl up into a foetal position and play mostly-dead.

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I have since done another treatment, using 80c water, and without the central pod weight; and this morning it looks to be staying flat.
But I am wondering what others do, as boiling water doesn't seem to agree with the plastic composition of NSR chassis.
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#2 GRUNZ

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Posted 16 April 2018 - 09:43 AM

If your NSR chassis is not playing flat then the only thing I have heard that works is to let it under the magnets for a week...no boiling water at all.
That is why I do not like NSR cars for wood racing (maybe the new 908 will prove me wrong). For plastic they are great because the wobbling chassis is quite good to cope with its irregularities (admittedly Scaley Sport Track is not that bad...or not as bad as ninco).
Cheers
G

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#3 lenny broke

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Posted 16 April 2018 - 09:44 AM

Hi Mark,
I'm no expert in the field of plastics but I reckon the NSR's are a different plastic to the others mentioned. it seems to be a softer more pliable material.what if you tried a lower temperature in the water and check the results, perhaps repeating the process a couple of times.
Cheers, Alan

#4 Big Mick2

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Posted 16 April 2018 - 01:26 PM

Mark

Have flattened many NSR Chassis using the same method you used minus the pod weight. I put magnets in the same places and have had no problem. I feel as you seem to have found out it was the stress of the weight that caused the bend after the water cooled. That or the pod was being distorted by the weight.
I have always used boiling water and have not had that issue at all for me it could have been the weight or the pod screws done up a tad too tight
Regards
Big Mick

#5 mattcrackers

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Posted 16 April 2018 - 05:58 PM

I've flattened NSR chassis's the same but I remove the pod to do so.

Boiling water poured straight into the dish and completely covered the chassis,

allowed to cool and removed a short time later.

Only had to repeat the process on one car so far.

Matt

#6 Wobble

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Posted 17 December 2018 - 06:41 AM

Just tried the boiling water dip on a Mosler chassis (pre heated and all) and allowed to cool and still came out like a dogs breakfast. I read somewhere recently that NSR chassis are nylon rather than plastic. We're expecting a 25+c day today so it's back on the steel plate and sitting in the sun for the day. Now I know the NZ sun is "hot enough to fry an egg" so I'm hoping it's not hot enough to fry nylon.
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#7 SlotsNZ

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Posted 17 December 2018 - 07:08 AM

Last one I did, I did about 4 baths at a lower temp each time, and eventually got it flat.

For those who don't usually have a pod/dummy motor in the chassis, this is to stop the mount points twisting, to flatten any distortion in the pod, and ensure that the two items emerge synergous in flatness

For the record, the weight cannot cause stress If all elements are correct in shape.
Slots addict 1st class * Inaugural and undefeated "Pie-Bone 400 champion" For of course, team "We Don't Gloat" * Slot.it Shootout Champion 2015 * Harmon Memorial Winner 2017 * Lathe Addict Extra-ordinaaire * Itinerant Mediterranean cuisine junkie * Hobbit 3rd class * Legend in my own imagination * Classic quote for 2018 "The older I get, the faster I was" * My Track Oakland Raceway V2 | * | Club intro on Youtube

#8 Kevan

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Posted 17 December 2018 - 08:45 AM

I ended up pinning my chassis flat to a steel block with magnets then super gluing piano wire down each side and around the nose... It's flat now!
If you have everything under control you're not trying hard enough

#9 Wobble

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Posted 17 December 2018 - 02:02 PM

Baking in the sun all day didn't change anything so maybe 3rd time lucky with the boiling water treatment. It's a white chassis and I think they're meant to be hard but it's as hard as a soft thing.
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#10 Wobble

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Posted 17 December 2018 - 05:23 PM

Two more jugs of boiling water and although it's not 100% flat, at least the weight of the body is enough to make it flat.
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#11 GAS41T

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Posted 18 December 2018 - 12:33 PM

Iím all ears !!!!

#12 Caddo

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Posted 19 December 2018 - 05:00 PM

How about trying new technology - the microwave - anyone game?

#13 Wobble

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Posted 19 December 2018 - 06:49 PM

View PostCaddo, on 19 December 2018 - 05:00 PM, said:

How about trying new technology - the microwave - anyone game?
Microwaves don't work. A while ago a fly flew into ours while I had the door open and I quickly closed it so I could zap the little bastard. I set it going for a minute and when I opened the door it flew out.
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#14 dangermouse

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Posted 19 December 2018 - 07:55 PM

View PostWobble, on 19 December 2018 - 06:49 PM, said:

Microwaves don't work. A while ago a fly flew into ours while I had the door open and I quickly closed it so I could zap the little bastard. I set it going for a minute and when I opened the door it flew out.

Think he wants to flatten an NSR chassis not a Fly one :P :P

#15 Kevan

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Posted 19 December 2018 - 11:30 PM

:)

Edited by Kevan, 19 December 2018 - 11:31 PM.

If you have everything under control you're not trying hard enough





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