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SOFT TOP weight
Posted: Wed Nov 01, 2017 1:00 pm
by wasp47
Hi
I have searched but unable to find the weight of an NB Glass window soft top including frame. Does anyone have the answer to this secret.
Cheers
Steven
Re: SOFT TOP weight
Posted: Wed Nov 01, 2017 1:16 pm
by NitroDann
Around 25kg but I can't remember whether it's 22 or 28kg...
Re: SOFT TOP weight
Posted: Wed Nov 01, 2017 4:55 pm
by wasp47
NitroDann wrote:Around 25kg but I can't remember whether it's 22 or 28kg...
Thank you
Re: SOFT TOP weight
Posted: Wed Nov 01, 2017 5:36 pm
by NitroDann
A hard top is 16 or 18 I think too.
Re: SOFT TOP weight
Posted: Thu Nov 02, 2017 11:11 am
by 93_Clubman
Early HT (no headliner & no demister) about 40lbs - later HT (headliner & demister) about 50lbs:
https://www.miata.net/garage/hardtop/
Re: SOFT TOP weight
Posted: Thu Nov 02, 2017 7:01 pm
by StillIC
NA soft top (PVC window) is 15 kg (as weighed by me on a load cell).
Glass window of dims 84cm x 39cm x 3.5mm (or thicker?), density 2.5 g/cm3, weighs at least 2.9 kg.
I am going to say the glass window soft top weighs 18 kg (or 40 lbs).
The lightest Mazda hardtop was on the original NA6, of which at least 5 kg is glass window (3.5 mm thick according to Mazda design sketches). Later models were heavier with gradual changes. I find it difficult to believe that any Mazda hardtop is as light as a glass window soft top (40 lbs).
Re: SOFT TOP weight
Posted: Thu Nov 02, 2017 7:36 pm
by StillIC
I note that the CarbonMiata GRP hardtop is 11 kg without window, so ~16 kg with a window.
Re: SOFT TOP weight
Posted: Thu Nov 02, 2017 8:26 pm
by mx589
Complete nb glass window softop is around 20kg
Re: SOFT TOP weight
Posted: Fri Nov 03, 2017 7:07 am
by hks_kansei
I doubt there's 4kg in the liner and the demister.
Demister is a few lines of super thin copper and a plastic plug. 500g at most.
And the liner is a sheet of 2mm foam, which I doubt would even weigh a kilo.
I'd suggest the weights in the miata net garage aren't correct.
Re: SOFT TOP weight
Posted: Fri Nov 03, 2017 9:01 am
by 93_Clubman
hks_kansei wrote:doubt there's 4kg in the liner and the demister.
Haven't had my NB8 HT along side an early NA6 HT to compare inside & out, but understand construction & finish also is better.
Re: SOFT TOP weight
Posted: Fri Nov 03, 2017 9:49 am
by hks_kansei
True, Mazda may have included extra structural stuff inside.
From comparing my NB top to my gfs NA top the construction looks identical externally.
But, I'm not cutting open a perfectly good top to check if the NB one has thicker plastic, or bracing or something.