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 Tappet cover protection

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Oz1200Guzzi
evansnows
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evansnows
Tanabuso
Tanabuso
evansnows

Posts : 53
Join date : 2019-06-05

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PostSubject: Tappet cover protection   Tappet cover protection Icon_minitime1Tue Apr 27, 2021 7:20 pm

Last week while riding on a busy Auckland street I came to a ton of gravel and rocks spilt from a gravel truck (who had then just driven on), it covered the whole lane, being a busy road by the time I saw it too late to stop.
I hoped I could ride over it but the front wheel let go and the GRiSO and I ended up sliding down the road,
fortunately it was about 20 mtr from a traffic light so not going fast.
The result was a flap of flesh being stitched back in place on my knee, grazes and bruising and similar sorts of damage to the GRiSO.
Once I was able to move around I got on with patching up the GRiSO.

When I got to the tappet cover I decided to see if I could incorporate some protection.
Here's where I went with the idea.
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I used teflon to prevent the laminate bonding to the metal
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Six layers of double bias glass fibre with black pigmented resin, a final layer of peelply over that
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The glassfibre trimmed back
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The plastic and glassfibre with a layer of carbon fibre twill over them. built up with layers of clearcoat to fill the weave and black sikaflex
used to fair the component to the metal tappet cover
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The final result
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I've been thinking for a while that it would be good to add some protection but didn't want to be bolting bits of steel on the bike.
I'm happy with the result. It saved me having to source a new plastic cover, gives 6mm or more of composite on the vulnerable
edge of the tappet cover and the carbon fibre doesn't look out of place on the GRiSO.

The cost was minimal, it took three days but that was because I had to wait for the layers of clearcoat to cure before I could sand back and add another coat. Three layers brushed on, final coat air brushed with flatting base added to cut down on the glossy plastic look.

Oz1200Guzzi, Bill Hagan, JohnA, Utesch, Spruce Goose and GuzziLooper like this post

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Oz1200Guzzi
Don Abbondio
Don Abbondio
Oz1200Guzzi

Posts : 5462
Join date : 2014-03-13
Age : 66

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Tue Apr 27, 2021 7:46 pm

Evans, good job. I suspect there will be orders (or requests) - incoming?
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evansnows
Tanabuso
Tanabuso
evansnows

Posts : 53
Join date : 2019-06-05

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Wed Apr 28, 2021 11:58 am

Now I know it works I'll do a detailed "how to" when I do the left side.
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Street
GRiSO Capo
GRiSO Capo
Street

Posts : 2891
Join date : 2013-05-29
Age : 62

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Wed Apr 28, 2021 9:15 pm

I hope your knee heals as well.

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evansnows
Tanabuso
Tanabuso
evansnows

Posts : 53
Join date : 2019-06-05

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Thu Apr 29, 2021 11:50 am

Thanks, stitches out yesterday.
Working on the left side and documenting the process at the moment.
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evansnows
Tanabuso
Tanabuso
evansnows

Posts : 53
Join date : 2019-06-05

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Sun May 02, 2021 5:11 pm

I've put together a bit of a tutorial showing how I go about composite work

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This is the left hand tappet cover and headlight shell

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paulbrice
GRiSO Capo
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paulbrice

Posts : 1161
Join date : 2015-01-04
Age : 60

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Mon May 03, 2021 1:55 am

Nice write up Evans (& great work also !); useful hints & tips for me at the 'dabbling' end of fibreglass/kevlar/carbon skills Wink Thanks Paul
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evansnows
Tanabuso
Tanabuso
evansnows

Posts : 53
Join date : 2019-06-05

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Tue May 04, 2021 1:37 pm

I made another tutorial years back that may give a broader picture for anyone wanting to try composite
work
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BowraBoy
GRiSO Capo
GRiSO Capo
BowraBoy

Posts : 101
Join date : 2019-07-28

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Wed Jul 07, 2021 4:43 pm

Great effort and idea.
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tsheep2
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tsheep2

Posts : 31
Join date : 2020-07-08
Age : 52

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PostSubject: Re: Tappet cover protection   Tappet cover protection Icon_minitime1Fri Jul 30, 2021 4:32 am

Is the headlight converted to LED ? If so, i'd like to know if it's physically the same as the standard headlight?
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