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T O P I C    R E V I E W
ShelGame Posted - 11/07/2017 : 14:22:14
Time for this bike to get it's own thread. This is just a first sketch. Literally did this last night in a hour before bed. Really just a geometry study at this point. Feel free to poke holes in the idea.

The idea was to see what a high racer would look like with the seat @ 15deg and as short a boom as possible, staying with a 'stick bike' layout.

I have a Rans F5 (steel) frame coming soon. I'll play with that first to see how I like it and probably refine this idea over the next few months...
25   L A T E S T    R E P L I E S    (Newest First)
Rat Rider Posted - 04/27/2018 : 14:01:29
I am late, as usual, to the party, but this design reminds me of the Z-bone. A racey bike for sure. Even my fat-a$$ did a 4 hour century on one. Of course drafting off JS, JV, and others might have helped.

Originally posted by ShelGame

How about this?

Inspriation was this:

Which I beleive I read was your work, Thom? Don't know if it was fast, but it looks fast.

Mine is a similar layout, but not FWD...

Too many bents
ShelGame Posted - 03/19/2018 : 09:53:11
Maiden flight was yesterday. It wants to roll, that's for sure. Very easy to get going. I rode without my cleats just to be safe. But, I think the next ride I'll try the cleats.

Did find one problem - I laced my wheels wrong. I didn't interlace the spokes on the 3rd cross. The wheels (especially the rear) have very little lateral stability. Going to take them all apart and relace them this week...

Seems my LWB is in the same boat. Not sure how I missed that step. Oh well, live and learn.
Jerry Posted - 03/03/2018 : 14:00:00
I would bet the real weight would be closer to 29-30 pounds rather than the advertised weight. Someone in TX weighed his F5 and it was 29.8 pounds. I think the companies weigh them with no cables, pedals, tires, and tubes! My trike weighs over 5 pounds more than advertised. It is a lot easier to lose 5 pounds off ones self than the bike! It still is a nice looking bike.
Speedbiker Posted - 03/03/2018 : 12:14:55
That stuff adds up. Plus, advertised weight might not have been sport on.
ShelGame Posted - 03/03/2018 : 10:35:22
Weighed it today. A little disappointed that it came out at 31.2lb. I thought this would be much lighter than my homebuilt LWB (@32.7lb). But, only a pound and a half.

According to Google, the advertised weight was ~26lbs. That was with the Rans seat, not a hardshell like this. And, of course, without pedals. But, they don't weigh 5lbs.

I would guess that my seat brace is lighter than Rans'. My handlebar setup should be close to a wash. I guess these wheels aren't so light, but they're not especially heavy either. Front (steel) fork is a bit portly, though. Might need to find a carbon replacement for it...
Speedbiker Posted - 02/25/2018 : 05:08:15
Sweet rig. Perfect for the Black Bear 100.
ShelGame Posted - 02/24/2018 : 22:01:18
Just about ready for a ride. Still need to cut and cap the cable ends. Should get that done tomorrow. Maybe go for a ride, if the weather cooperates.

ShelGame Posted - 02/16/2018 : 11:42:14
Had a frustrating week, so I bashed on some metal and made the lower seat bracket. It's not perfect, and a bit higher than I had hoped. But, it's done, and has 2 QR's to release the seat completely.

Now to cable it up and get it ready for a test ride.

Jerry Posted - 01/24/2018 : 07:43:47
Looking good! I never had a problem with balance on the Actionbent. I think the F5 will be even more stable. After you get use to the bike, lower that seat down to 20 degrees or lower!
ShelGame Posted - 01/23/2018 : 21:26:49
Shoulders, yes. I think my head will be just in front of the axle. Much the same as the Actionbent I got from Jerry...

warren Posted - 01/23/2018 : 20:34:36
Looks nice! On your drawing I just noticed that your head will be behind the rear axle which will make it hard to balance. That's one of the problems with stick bikes.
ShelGame Posted - 01/23/2018 : 18:03:17
Been a while since this was updated.

It now has tubes/tires and half a seat mount. Just need some more skewer parts and the bottom seat bracket to be fabbed up.

Seat angle as pictured is 30deg, and this keeps my head just in front of the rear axle. I will probably try to push it down to 25 or even 20deg at some point after riding.

ShelGame Posted - 12/03/2017 : 16:35:26
Painted the fork and installed it today. Mounted up the wheels just to get a look of it...

ShelGame Posted - 12/03/2017 : 08:23:57
Paint is done. Not pro, but decent for rattle can. I used the same epoxy paint as my long wheelbase home build.

And, re-assembly started.

Friday nigh, I also brazed a brake tab onto the steel Sun fork I plan to use. This thing is not light. But, itís a low rise Ďtrackí fork which is what I laid out for the bike with the 700c wheels. A Ďnormalí height 700c fork and the steering geometry would be all wrong, I think.

ShelGame Posted - 11/28/2017 : 12:32:52
Powdercoat is all off. It's just about ready for re-paint (or re-coat). What does powedercoat usually run?

warren Posted - 11/22/2017 : 08:54:37
Thatís not paint, itís powder coating. Yes it is much tougher than paint!
Speedbiker Posted - 11/21/2017 : 21:19:11
Yeah, overlap. I see it doesn't have much, but I mostly based it on a Vendetta's original geometry. I would have loved to make the whole thing lower, but that wasn't the deal.
ShelGame Posted - 11/21/2017 : 20:29:24
Originally posted by Speedbiker

Yes Rob, that mbb is the design & prototype I sold Cruzbike(also the one Oslund used for the 100 mile record). It's a good layout, but the boom is too short for non-mbb.

Iím not following. Why is the boom too short for non-MBB? Crank overlap? I would think a short boom would be good, less flex and all that.
Speedbiker Posted - 11/21/2017 : 20:21:07
Yes Rob, that mbb is the design & prototype I sold Cruzbike(also the one Oslund used for the 100 mile record). It's a good layout, but the boom is too short for non-mbb.
ShelGame Posted - 11/21/2017 : 20:06:44
Pringle is in...

Now I just have to figure out how to get the rest of the paint off. Whatever Rans used, itís good stuff. Automotive Paint Stripper hardly even softens it...
warren Posted - 11/16/2017 : 09:55:09
alevand Posted - 11/16/2017 : 06:43:54
Don't do any headers without a helmet on. I use to store my pump inside the tube, until I forgot and sawed it in half.

Tony Levand
warren Posted - 11/15/2017 : 11:47:06
I have an old Giro frame with a crack in the base of one of the rear stays which I'm planning on Z-ing. It will have wide tires and headers and be FWD.
purplepeopledesign Posted - 11/15/2017 : 10:57:52
Just realized that it has to be a Pringle, since a potato chip on a bike means something much less benign.


Those who claim to be making history are often the same ones repeating it.

Video of my trike
Photos of my trike
warren Posted - 11/15/2017 : 08:10:29
Your latest drawing looks great, Rob. Pringle, LOL.

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