Hybrid project

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Gerrit
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Re: Hybrid project

Post by Gerrit » Sat Sep 19, 2020 5:40 pm

I just weighed one of the RGV legs and it weighs 4.0 kg, with oil (quantity unknown). So assuming your legs were weighed with oil, Jan, the difference with the ZX6 leg is 0.4 kg- and it's 0.8 kg lighter than the ZXR400H leg. It would be interesting to compare the wall thicknesses and lengths of the stanchion tubes and weights of various other parts to see where the difference of 0.4 kg comes from.
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JanBros
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Re: Hybrid project

Post by JanBros » Sat Sep 19, 2020 11:32 pm

zx6 was also weighted "ready to use".

like I already said : most of it comes from the steel inner legs.
I've got 2 set's of these forks, one I bought with a bended led. I've straightened inner leg's many times and it was obvious that less force was needed. so the gain is "double", as it's sprung weight.
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KR-1R
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Re: Hybrid project

Post by KR-1R » Sun Sep 20, 2020 12:07 pm

.
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R6 fork leg is 3.967 kg, 735mm
Image

Gerrit
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Re: Hybrid project

Post by Gerrit » Sun Sep 20, 2020 4:16 pm

From which model RGV is that leg, KR? vj23? It doesn't look much like my legs which are definitely vj22.

I stripped one leg and measured the ID of the stanchion tube, which is 37 mm. The OD is 41 mm which leaves a wall thickness of 2 mm. I don't think that can be safely reduced any further, so the weight advantage of the ZX6 forks is presumably caused by lighter internals.
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JanBros
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Re: Hybrid project

Post by JanBros » Sun Sep 20, 2020 5:18 pm

Gerrit wrote:
Sun Sep 20, 2020 4:16 pm
From which model RGV is that leg, KR? vj23? It doesn't look much like my legs which are definitely vj22.
he says it's from an R6 ;-)
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Gerrit
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Re: Hybrid project

Post by Gerrit » Sun Sep 20, 2020 6:23 pm

OOPS, I misread RG!!!!!!!!!
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Re: Hybrid project

Post by Gerrit » Thu Nov 05, 2020 5:31 pm

Minor update: I had five shallow grooves cut into the top of the upper tubes at 5 mm spacing to aid in adjusting ride height at the front end:

Image

They will now be sent off for re-anodising.
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Re: Hybrid project

Post by Gerrit » Sat Nov 21, 2020 11:23 pm

As I won't be using the oil pump the water/oil pump drive gear was cut down in width to 7 mm. The standard gear weighs 246 g, the modified gear 152 g.

Image

Image
"Mine is a long and sad tale", said the mouse.
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