Designing a new rear fender - winter project

Jagster

Torque junkie
Joined
Dec 14, 2022
Messages
178
Location
UK
Ride
2020 Rocket 3R
Starting to prep the surface of the mould with high build primer.
There are one or two localised areas that have not printed cleanly, so will need a bit of tlc before waxing up with mould release.

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Jagster

Torque junkie
Joined
Dec 14, 2022
Messages
178
Location
UK
Ride
2020 Rocket 3R
.....so...the gelcoat followed GRP is laid into the mould. I'v made it around 3mm thick, which should make it strong/stiff enough.
Now cured and the initial trimming has been done around the edge of the mould prior to removal from the 3D printed mould.....

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stingray

Keep an eye out for a gas station.
Joined
Mar 3, 2022
Messages
744
Location
Texas
Ride
'21Rocket 3GT, '17 KTM 1290 SDGT, '04 Goldwing
I'm interested in how it turns out. Do you think the fiberglass strong enough by itself or will it need any support? I guess you could glass it in with fender washers too since you have the mold. Pretty cool making your own fender. Big props your way.
 

Jagster

Torque junkie
Joined
Dec 14, 2022
Messages
178
Location
UK
Ride
2020 Rocket 3R
I'm interested in how it turns out. Do you think the fiberglass strong enough by itself or will it need any support? I guess you could glass it in with fender washers too since you have the mold. Pretty cool making your own fender. Big props your way.
I think it will be strong enough. I've got it all trimmed up and trial fitted to the bike at the moment and it feels pretty sturdy.
There is some flex in the way of twist, when I get hold of the licence plate end of the fender and try to push it about. I don't think it's enough movement to cause concern bearing in mind that it's mounted to the rear subframe compared to the swing arm like the stock rear fender, which is real harsh.
It's not going to wobble about while you're riding along, or anything like that.
It's good to have a bit of flex, as it helps to absorb shocks.

I'll post up some photos when I get a chance to wheel the bike outside.....It's a bit cramped in my workshop at the moment. Too many projects on the go.
 
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