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Re: New Technology

Kevin Crockett - VK3CKC
 

Ah, the sweet, sweet, smell of success. Got a rough lash-up clamped down in various places, sufficient to give a validation test. It worked. You just move the slider until the change takes place. A visual indication to the rider might be a noticeable change in the resting angle of the chain tensioner.

I used a 14t-28t 5-speed mid-drive cassette mated with a 28t-48t triple chainring. Used derailleur idlers were used for the change slider and the chain tensioner. The chain guide idlers were substituted by a length of 3/4" pipe.

Considerations:

Larger idlers might be required for the slider and chain tensioner use. Their positions relative to anything else may need fine tuning.

The height of the slider idler must be higher than the height of the bottom of the smallest cassette sprocket. This will automatically make it higher than the bottom of the largest sprocket.

A triple chainrig might be used in place of the Hilgo double but it would probably be pertinent to bypass it in operation to avoid overlapping gears. A spreadsheet showed that the gearing should be sufficient with only two chainrings, providing a low range and a high range of gears, selected as required for either hill climbing or flat/downhill riding. The ratio between the mid-drive output and the rear wheel sprocket (only a single required) could be selected for even higher or lower overall gearing.

All in all, it seems like a great idea and one that I will be looking at incorporating in my current trike build - with an 8 or 11-speed of course.

Re: New Technology

Kevin Crockett - VK3CKC
 

Didn't quite get it finished. Now have mid-drive, slider, tensioner, front bottom bracket, and a chain ready to size. The chain routing with the test rig needs a bit more thought. Tomorrow should see it operating - to some extent.

Re: New Technology

Kevin Crockett - VK3CKC
 

Got my rough version of the Hilgo gear mech started today. Didn't get it finished but got a 7-speed mid-drive set up on a bracket and the gear change idler wheel on a bracket and fastened to the drawer slide. Only have to make up a tensioner and remove the bottom bracket/front boom from the trike I am building, mount them on the side of the work bench, make up a chain, and see what happens. Changes will be made by hand moving the slider. An hour or so tomorrow afternoon should see an adequate test.

Re: New Technology

Kevin Crockett - VK3CKC
 

I purchased a steel drawer slide to use for my version of the Hilgo transmission. Just to get it working on a 7-speed first and then installed in the current trike build with a possible 11-speed..

New Technology

Kevin Crockett - VK3CKC
 
Edited

If you are interested in a new velomobile gearing technique, have a look at https://www.youtube.com/watch?v=-LIyl4aGpac. This allows almost all the drive mechanism to be inside a velomobile body, out of the dirt and dust. The mechanism was developed by Drymer and Sinner Bikes. The Drymer-Sinner Hilgo velomobile will only set you back 7,750 Euros.

Detail:

- Two front chainrings; 34 –50T;
150mm SD-cranks standard o Shorter cranks are possible
- Shimano 105 11-Speed front derailer
- 11-speed chain KMC
- Sunrace 11- speed 11-40T cassette
- Shifting system developed by Drymer - Sinner;
o Super light shifting
o Super fast shifting
o Intuitive handling
o Wide gear range
o Drop - in mid-drive axle
o Optimal chain tension in every gear
o Robust
-  Sturmey-Archer 70mm drum brakes
- Front light; Busch+Müller IXON- X E 150LUX mounted in the nose.
- Interior LED light
- 1 PC. Battery 12V
- Tires; Rear maximum 55-406; Front maximum 44-406
- Suspension; McPherson front struts, rear Hilgo shock absorber. (maintenance free)
- Self supporting, removable seat (glass fiber)
- Cateye Enduro 8
- Wheel covers black
- Mirror Zefal Spin

The way of the future in velomobiles? The Hilgo mechanism  indicates a departure from typical bicycle engineering parts to purpose velomobile stuff. The derailleur system looks like it is a push-me-pull-you affair with two cables. Easily replaced with a stepper motor? Now there's an idea. I don't know if there is any cassette on the rear wheel. Possibly not as there are 22 gears available in any case. Note that the mechanism has a modern MTB cassette with a 40t lowest gear. I love the chain tensioner.
Also have a look at http://hilgovelo.blogspot.com/2017/11/the-hilgo-story.html for the development story by one of the Sinner people - Harry - to get a greater understanding of how good it is. You will see that it is shifted by two cables.
Now, can I come up with a home-made variation that I can swap in before I get too far advanced? It seems simple enough. Is there yet one more velomobile to build?

Re: Great Cycle Challenge - RIDING TO FIGHT KIDS' CANCER

 

On 22/08/18 01:01, Graeme Knight - VK3GRK wrote:
Hi Pedal Radio Group,

I have entered a team in the Great Cycle Challenge to fight kids' cancer!

Our team is called BAREC Pedal Radio Group and I am inviting you to join us to ride throughout October.
This is a great event, but unfortunately for me, it's not a good time of year.  In a normal year, track season is starting, and I'm in sprint mode.  This year is even worse, because I have the Police and Emergency Services Games at the end of October.  My training will be mainly speed and speed endurance, which is high intensity, low volume, and the opposite to racking up the kms.  And in the last week, I will be tapering down as well.

And I have to put my focus on the games, as I am being supported to go there and represent CFA - I am currently state champion in my sprint events. :)
-- 
73 de Tony VK3JED/VK3IRL
http://vkradio.com

Re: Planned Ride

Kevin Crockett - VK3CKC
 

In order to limit the proliferation of messages and the consumption of storage space, I am thinking of killing the Thursday and Sunday calendar reminders and leave it up to individuals to post something when they are in position for a ride. I will then work at pruning old messages..

Re: Great Cycle Challenge - RIDING TO FIGHT KIDS' CANCER

Kevin Crockett - VK3CKC
 

I am now also signed up.

Great Cycle Challenge - RIDING TO FIGHT KIDS' CANCER

Graeme Knight - VK3GRK
 

Hi Pedal Radio Group,

I have entered a team in the Great Cycle Challenge to fight kids' cancer!

Our team is called BAREC Pedal Radio Group and I am inviting you to join us to ride throughout October.

How does Great Cycle Challenge work? You set yourself a ride target and pedal it down over the month, logging your kilometres via a free app which is linked to your personal rider page.

It's a great excuse to get on your bike!

And it's all for a great cause, to fight kids' cancer.

To join our team, check out our team page below:

https://greatcyclechallenge.com.au/Teams/BARECPedalRadioGroup/h

I hope you can join BAREC Pedal Radio Group and pedal with us this October to end childhood cancer.

Have a great day!

Graeme.

VK3GRK.

Re: Remote Control #remote

Kevin Crockett - VK3CKC
 

Only if I give you the password.

Re: Remote Control #remote

Graeme Knight - VK3GRK
 

And then when Kevin gets his remote transceiver organised - we can just access his ;-)

Re: Remote Control #remote

Kevin Crockett - VK3CKC
 

Good to hear you are back on the road Andrew.

There is a myriad of apps, etc., for remote controlling a transceiver. The difficulty appears to be in making a choice for yourself so that when you put it together, it works. I still have a few things to try. I will try LAN firsty and then WAN.

Re: Remote Control #remote

Andrew Excell
 

It's amazing what smartphone tech is capable off. I'd be keen to check it out. Building a short wave supereganerative (rx only) circuit, a SDR, a pair of amps, pre-amp, the parts to finish the parabolic antenna have arrived so that will be completed soon ( need f uhf to f uhf Conn's to finish, jaycar tomorrow) plus other stuff as always. Studying is going well, so hopefully soon I'll be licensed and on air soon, plus able to build tx/RX circuits too. Car has a new battery so I'm mobile again. So I'll see you at the club and on rides if you're there. Keep up the good work and research, I appreciate hearing about achievements and advancements not only the broader smet community has to offer but more pertinently what members of our club have acheived and tried. Cheers Kevin ta

Re: Remote Control #remote

Kevin Crockett - VK3CKC
 

I downloaded a heap of YouTube remoting videos, viewed them, and decided to install PocketRxTx on my phone. It and the videos looked impressing so, after downloading the User Manual, I then decided to upgrade to the Pro version for $5.00 odd. This allowed me to control a couple of Web SDRs without doing much more than opening the app and setting a couple of things. I tried a couple in Canada and the app creator's SDR in Hungary(?). Worked a treat. The manual says that there is nothing really different with controlling your own transceiver and this is next on the list when I get some time.

It seems like an easy, painless, and cheap way to go.

Remote Control #remote

Kevin Crockett - VK3CKC
 

Another spin-off project suggested itself to me after rain put paid to my trike building endeavours for the day.

Why not remote control a home multi-band radio from your ride? The benefits are less stuff to cart around and the more efficient, higher gain, antennas that exist at home. A Raspberry Pi based computer might be the best to use at homer as it would only require starting up. There a many Youtube tutorials on the Internet. Only require choice of which one to use.

You can use your phone to control it. I have a dongle that I use for DMR so an old tablet, when I get around to resoldering the micro-USB socket, should do for the ride end.

How about it? Let me know how you go and I will copy it.

Re: Interesting Things To Look At

Kevin Crockett - VK3CKC
 

The first rider in the Lyon-Canton solar bike rided has arrived in Guangzhou (Canton). 12,000km in 45 days = 270km per day. Think of that next time you are too tired to ride around the block.

Re: Front Mudguards - Plans or designs for recumbents

Paul Stampton VK3IH / G3ZDR
 

My GT3 Greenspeed trike had nice Greenspeed mudguards they worked well.

Paul VK3IH

Mudguards - Plans or designs for recumbents

Andrew Excell
 

Bog, from my experience requires a rough surface (80-120 grit) foothold and a chemically sterile (i.e No wax, grease etc) surface to perform a good bond, but even then you have to consider your hardener ratios, humidity, temp, and material permeability, flexibility to gain better performance. even then bog under ideal conditions does not like temp variations, heat, dissimilar materials (i.e metal and plastic in the same area to be bogged), substrate surface expansion (ie. sheet metal on a hot day) and especially, shock and vibration. An alternative maybe fiberglass, resin, carbon fibre or 2pack polyurethane resins from easy cast which is like castable pvc in a way. it files, joins, flexes, and stands up to more abuse than bog. But with steel, Alu etc weld smoothing bog is still king due to these parts made by common ferrous and non ferrous materials usually are rigid non flex stable components i.e vehicle non structural sheet metal if the prep is done right that is. I've used "easy cast" (2pack polyurethane resins) before on similar pvc projects and found it vastly outperforms, compared to bog. You can by these easy cast kits from Riot art supply for approx $45 Aud or online i guess for less, these kits come in various sizes from 250mL to 1L and comprise of instructions of use and part A bottle (resin) and Part B bottle (hardener/catalyst/ accelerator). You could even buy silicone mold kits and "pour" one piece parts from scratch using easy cast a silicone mold and a clay die (original relief cast for the silicone mold). Hope this helps.

Re: Front Mudguards - Plans or designs for recumbents

Kevin Crockett - VK3CKC
 

Before anyone gets too carried away with making mudguards, it may pay to consider the bogging process.

My single mudguard was left sitting on a bench awaiting time to progress it further. Unfortunately, I knocked it off and it fell on the ground. Many of the bogged kerfs cracked with the bog and the PVC separating. Maybe PVC is something that PlastiBond doesn't like? I have used it for filling welded steel to make it look better where the angle grinder wouldn't fit and it is OK.

Internet radio receiver netcasting websites

Andrew Excell
 

G'day fellow radio, electronic and cycling enthusiasts, firstly i'd like to extend my gratitude of welcoming me to the club and also making me feel accepted and additionally providing me with valuable advice and resource materials. Secondly I'd like to say and thank everyone involved with today's bike ride, although short and the weather was not ideal, i still had fun. Now to my point, recently i have been introduced to internet amature radio "net casts". I was searching for the 'KIWI' site (unknown actual name), if anyone can refer me to this site, it would be much appreciated. By chance I did stumble across a net casting of The Irving Amature Radio Club WA5CKF located in Dallas, TX, USA. At the moment a weak signal is broadcasting a sci-fi movie, mainly soldier, bladerunner, terminator etc forum chat, interrupted occasionally by a clearer broadcast between two gents with thick Texan accents discussing amature radio setup, disign, and troubleshooting, with very very occasional morse transmissions. Just thought i'd let you know whats out there that i've found. link as follows http://streema.com/radios/play/49163 additionally STREEMA has other amature radio net casts see link for more https://streema.com/radios/search/?q=amature+radio . I hope this is useful, if not it's at least something to keep in mind for later, if needed  i guess. Any way I hope your day is going well and again thanks for the welcome to the club and advice in my new found love of ammature radio. cheers Andrew.