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 Technical / Bike Building
 Trike time (see pg 5 for build 1)

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T O P I C    R E V I E W
warren Posted - 11/03/2016 : 15:03:21
The gentle reader may ask, "Why don't you just pick a trike and ride it!". Oh, I have reasons gentle reader, reasons.

After riding and racing the Greenspeed Areo, I can say it handles corners well and is fast in a racing environment. I do not however fit in the seat as they are designed for "normal" height humans and major reconstructive surgery would need to be performed to make that happen.

After racing and riding the ICE Vortex (almost a VTX!) I can say that the seat fits me well and it is comfy, but due to a lack of triangulation it does not do well in a racing environment. The VTX is stiffer in the rear and has a seat which can be laid back more that the Vortex so it would be better, but is still has just a monotube and that will allow the rear wheel to deflect in the hard corners.

That leaves the Catrike 700 yet which I not raced or ridden in anger. It is however quite popular in the HPRA racing series. If I were to obtain one, it would need some modification including a hardshell seat to get me a bit lower, and probably a change to indirect steering. If my backside can fit between the seat rails they would make great side bolsters to prevent sliding off the seat in the hard corners.

The final option is of course, building one from scratch.

Here's my web page documenting my racing trike investigation and research.

http://www.recumbents.com/wisil/trike/default.htm

So, What makes a recumbent trike fast? Build or buy?

25   L A T E S T    R E P L I E S    (Newest First)
alevand Posted - 09/04/2018 : 11:48:48
Whats you trike weigh, Warren?

C:
Tony Levand
Jerry Posted - 06/16/2018 : 05:20:36
Very nice Warren.
warren Posted - 06/15/2018 : 14:57:28
The rack is bolted to the headrest bolts and then has a single tube that angles down to the power side dropout. The handlebar bracket is attached to the main tube.



Here it is with the bag attached. The bag rests against the single leg to keep it from bouncing around too much.



I'm hoping I don't get too much road chatter transmitted to the headrest.
warren Posted - 06/14/2018 : 08:57:27
The camera was an old go-pro. It has a handlebar mount adaptor, which I just clamped to the end of the tube.

I still have not ridden this trike other than around the neighborhood. I decided it needed a bag to put all the crap I need for a long ride into. I have a nice handlebar bag with a quick release which I hadn't ever found a use for, so I'm building a "rack" for it so I can use it as a single sided pannier.
carolina Posted - 06/10/2018 : 14:40:06
How did u mount the selfie stick to hold camera? Got a pic?

velosRus.com
warren Posted - 06/09/2018 : 19:33:11
I finally had time to make a short video and figure out how to use the video editing software.

https://youtu.be/5bx12YOAXm8
Runxner Posted - 06/08/2018 : 21:07:42
nice solution. make a shelf on it and you could completely relax your arms too

Team Low-Life
Lowracer Test Pilot/Evangelist
warren Posted - 06/08/2018 : 15:25:26
To get more turning leverage I built some handlebars extensions which I push with the back of my wrist in a sharp turn. Surprisingly it seems to work great. This also solves the "tire will rub my wrist in a tight turn" issue.



And yes, the trike is very low. I do hit the chain keeper on driveways and such.

warren Posted - 06/06/2018 : 18:01:26
I found a potential solution to the steering difficulty issue, which involves a bolt-on handlebar extension. This would allow me to use my wrist to give a bit more steering power in a tight turn. Cutting and brazing now, pictures later. Hopefully I値l be able to test the trike this weekend!
SpiderMonkey Posted - 06/01/2018 : 10:52:53
Amazing the difference headset tightness/looseness makes on a trike.

--SpiderMonkey
warren Posted - 05/29/2018 : 19:56:03
Tonight I took the trike for a test ride for the first time in about a month. It was having the death wobble horribly. I took it back to the garage and discovered that one of the hub bolts was loose, as was one of the headsets. Tightened them and pumped the tires up to 60 psi. Wow, it's a whole different trike! No more wobble and it feels good. The only issue left is that it takes a lot of strong-arming to put the trike into a sharp corner and keep it there.

The trike race in North Manchester Indiana is in a couple weeks, so I will have a good chance to test it on a racing scenario there.
warren Posted - 04/18/2018 : 11:00:50
Ah, you meant a telescoping antenna. I was thinking just a stick antenna and was confused. Yes, the telescoping antenna is a good idea.
SpiderMonkey Posted - 04/18/2018 : 10:08:10
I made one similar, but broke it and ordered the radio antenna as the replacement.

--SpiderMonkey
warren Posted - 04/13/2018 : 12:01:41
A Callibro is a Catrike tool that allows you to accurately adjust the toe. You put it between the brake surfaces of the two wheels at the front and lock it, then use it to check the wheel distance at the back and adjust as needed. Much better than two boards lined up next to the tires. I made one using a 3/8" rod that slides inside a 1/2" tube. The Catrike one has a fancy lever to allow it to lock at the desired length. Mine just uses stiction for now...
SpiderMonkey Posted - 04/11/2018 : 19:39:10
I never figured out what caused that one shimmy I got. It was triggered by a bump in the pavement. I have since retensioned headsets many times as well as corrected toe-in. It scared the crap out of me though, because it was so unexpected. Rolling the (expedition) down hills at 45 mph fully loaded in the hills of Iowa, it was rock solid, thankfully. The only bike I trust more at high speed is the NoCom.

Catrike replaced the top headset bearings with teflon bushings to dampen road shocks, and this supposedly eliminated shimmy. I can't remember now if I have those or not. I also read that having the kingpin axis outside the tire contact point causes this, but I get confused quickly thinking about trike steering geometry.

I'm amazed you got one put together so quickly.


--SpiderMonkey
warren Posted - 04/11/2018 : 19:21:31
Apparently I need to make a Callibro.
warren Posted - 04/11/2018 : 19:13:11
Seth - I took the trike for a couple jaunts up and down the street tonight. It was the first time I had it out since I painted it. I checked the toe a couple times and adjusted it a bit. I still get a little shimmy occasionally. I'm not sure what triggers it. Also it requires what seems like a lot of force to make sharp turns. I'm not sure why, maybe the handlebars are too close to the kingpins?
SpiderMonkey Posted - 04/11/2018 : 12:19:21
I haven't checked in on this in a while. Nice looking trike. No more wobble? I got some once on my Catrike at about 25mph on a downhill and it scared the hell out of me. Never got it again.

You may know this, but a $3 radio antenna is a great toe-in tool.

--SpiderMonkey
warren Posted - 04/07/2018 : 19:03:30
It would fit rather nicely on the trike, but not in my car...
alevand Posted - 04/07/2018 : 08:53:13
Would the no-com tail box fit on it?

C:
Tony Levand
warren Posted - 04/06/2018 : 19:16:14
Rear disk installed.

warren Posted - 04/06/2018 : 13:09:07
JJ - No, I need to do that.
Harv - Good idea, maybe later...
harv Posted - 04/06/2018 : 12:32:46
IMNSHO, the wheel disks would look great, painted to match the frame, The black tires will separate them from the frame.
carolina Posted - 04/06/2018 : 11:49:14
Favorites:
1) triangle 3 hole plate by rear tire.
2) chain wheel system under seat and velo chain tubes.
3) the steer tied into rod-end bearings.
4) seat sure ain稚 going anywhere too
覧覧覧覧

velosRus.com
jjackstone Posted - 04/06/2018 : 10:52:02
Did you check the toe while sitting on the trike?

JJ

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