Nobl

Alfino Bombino 3, homebrew 31

4847 of 16920
(28 people)
Its.Wilkoed
4/12/2020 4:01am
s1600 Wilkoed AB3 FB
s1600 AB3 driveside
s1600 AB3 brakeside
s1600 Wilkoed AB3 FB
c90 Wilkoed AB3 FB.jpg?VersionId=fJ460ijnxYbV44Vw c90 AB3 driveside c90 AB3 brakeside.jpg?VersionId=gv7vaVdI2uusGfNcuIM
Related:
Bike of the Day
FOX
RockShox
Shimano
Gearbox
Easton
Self-Made
Continental
Parts
Brand
Model
Additional info

Parts

Frame
Other
Wilkoed AB3
Homemade in a garage in Yorkshire, UK
Frame: Other Wilkoed AB3. Misc: Homemade in a garage in Yorkshire, UK
Rear Shock
FOX
Float CTD
Rear Shock: FOX Float CTD
Fork
RockShox
Pike
Fork: RockShox Pike
Stem
FUNN
Funnduro
Stem: FUNN Funnduro
Brakes
Shimano
XT
Brakes: Shimano XT
Shifters
Shimano
Alfine
Shifters: Shimano Alfine
Cranks
Truvativ
Hussefelt
Cranks: Truvativ Hussefelt
Chainrings / Sprocket
Other
Superstar
32T
Chainrings / Sprocket: Other Superstar. Misc: 32T
Bottom Bracket
Truvativ
ISIS 83 mm
Bottom Bracket: Truvativ ISIS 83 mm
Front Rim
Easton
Haven
Front Rim: Easton Haven
Rear Rim
Easton
Haven
Rear Rim: Easton Haven
Hubs
Easton
Haven
Hubs: Easton Haven
Spokes
Easton
Haven
Spokes: Easton Haven
Front Tire
Continental
Der Baron
Front Tire: Continental Der Baron
Rear Tire
WTB
Vigilante 2.3 TCS
Rear Tire: WTB Vigilante 2.3 TCS
Saddle
Charge
Spoon
Saddle: Charge Spoon
Seatpost
Crankbrothers
Highline Dropper
Seatpost: Crankbrothers Highline Dropper
General Info

General Info

Model Year
2020
Model Year:
2020
Riding Type
Trail / All-Mountain
Riding Type:
Trail / All-Mountain
Additional Info

It's a frame mounted Alfine (including the brake), long, low slack creation. The main idea was to keep the unsprung mass as low as possible.

Additional Info:

It's a frame mounted Alfine (including the brake), long, low slack creation. The main idea was to keep the unsprung mass as low as possible.
Its.Wilkoed
4/12/2020 4:01am
4847 of 16920
31 comments

View replies to: Alfino Bombino 3, homebrew

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Zac_Youngson
4 years ago
Interesting, you are a brave man taking on something like this! I have been waiting to see if big manufactures get on with doing a gearbox bike. They seem to have come and gone over the years but never really caught on. The zerode bikes are promising, I think it will take more bikes like this to get people to start changing their minds and take notice.
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Big Bird
4 years ago
Back in the day I got to ride a Brooklyn Machine Works Supertrucker which has a similar set up but weighed twice as much and had twice the travel.
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Solidautomech
4 years ago
Wow what a cool build with really cool ideas!
What is the braking like on the rear?
Is it powerful enough, does the chain skip or wind up, or do any other odd things happen?
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Its.Wilkoed
4 years ago
Thanks.
The brake works just fine. It's more of a less direct feel and it's pretty reliant on good chain tension but there's no way it can skip or wind up. It's a one to one direct drive. You can get a bit of stutter as the tension in the chain "bounces" a little but it's something you get used to and becomes just as effective as a regular mounted brake.
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Its.Wilkoed
4 years ago
Ah, right. That's why I asked what you meant by "based on". I thought you meant just inspired by or copied or something like that.
Yes, there's a donor frame in there. The additional parts are formed with a foam core and then wrapped with the composite. "cold cure".
Honestly don't know what the donor frame was originally. I think it came from a Planet X clearance sale of prototypes and samples so it had no decals or markings on it but I doubt it's a Marin.
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CTuck
4 years ago
Amazing! I want to see some process pics, you posting on social media or anything?
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Its.Wilkoed
4 years ago
its.wilkoed on Instagram has some more bits and pieces. I keep thinking I should put a blog together but never get round to it. Never sure who'd be interested in seeing it to be honest.
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Its.Wilkoed
4 years ago
More to do with finding a crank to fit rather than a preference. The old Husselfelt cranks on a 83mm BB give just enough clearance to fit the Alfine between. Anything else is just too narrow or tapers too much.
I've got some DMR Axes on the way as they look quite wide so the ISIS will get retired if they work!
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Craw
4 years ago
I got an 83mm axle from Raceface to update my Turbines to fit my Geometron G16, which also runs an 83mm BB. Pretty sure you can get Atlas cranks in 83.
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Its.Wilkoed
4 years ago
Are Atlas cranks notably wide? I've tried Descendents, XOs and Saints all in 83 mm flavour but they don't clear enough width. The Husselfelts are very straight from the pedal and only taper for the last third of the crank arm.
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johnski
4 years ago
Please, please, please, put a Trust fork on this thing. All the pivots!
4
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Its.Wilkoed
4 years ago
No, there's no Marin in there.
What do you mean by based on?
The suspension mechanism is a single pivot with a link driven shock. The design is just based on getting the unsprung mass down and the Alfine as low as possible...with space for a bottle 😉.
1
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Its.Wilkoed
4 years ago
Thanks Zac.
Yep, I'm a big fan of Zerode and their approach. Also check out Deviate with the high pivot and the Pinion.
I think the other option at the minute is Effigear. Their Blackbird looks promising and I've seen some interesting things from Starling using that system.
It's coming and systems will keep getting lighter and more refined, I'm sure.
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Its.Wilkoed
4 years ago
Thanks. It's fixed gear to the rear wheel (which is actually a 20 mm maxle front wheel). The freehub is in the Alfine. The rotor is attached to the Alfine in the usual way. The chain drives a sprocket mounted to the rotor.
So it works in the same way a fixie rider brakes the rear wheel.
Make sense?

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