HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Aug 16, 2012, 10:19 AM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Quote:
Originally Posted by Gartenzwerg View Post
I just thought it could be a way to move the CoG further down, but I'm sure you thought of that already
Take a look at the carbon fin right behind battery. This is a ballast fin.

You can add a lot of weight there to lower CG without altering F/R bias.

Another clever solution from a Spanish designer....



Ah!!! Iīve received the Shapeways wheels today. And Iīve realized where the gluing problem is. The wheel material tends to break down as a nylon dust every time you scrap the surface. No way to get a nylon flake, only dust.

I plan to treat surfaces before atempting to glue the tyres on.

Light epoxy? Maybe...

Iīll post pics of the production rims soon.

See you then.

trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 07, 2012, 08:03 AM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
As I told you in a previous post, Iīve taken a pic of the production wheels.

Some extra cleaning and trimming to insert bearings in place and wheels are ready to rock.

Crash tests?

Iīll tell you about wheel durability once I found a way to glue tyres on.





Another tip. Iīve found a micro Deans plug from Robitronics specialy designed for 1/18 esc systems.

I plan to install one of these tiny male plugs between chassis plates to hide some of the power wires.





Also started to work on a custom SB5 style fairing for 1/8 bikes (two halves that include rider figure) and make some size testing with GPV1 body pics.

This is a size comparison between EL-5.8 and GPV1 body.... Lots of free room everywhere.







More news soon.

Cesar.
trf_414_m2 is offline Find More Posts by trf_414_m2
Last edited by trf_414_m2; Sep 07, 2012 at 08:11 AM.
Reply With Quote
Old Sep 07, 2012, 10:47 AM
Occasional useful idiot...
Joined Nov 2009
1,378 Posts
The wheels look fantastic!

Mind you, I don't envy you trying to solder those mini Deans, I have nightmares with the full size ones!
Jonathan Bradbury is offline Find More Posts by Jonathan Bradbury
Reply With Quote
Old Oct 12, 2012, 05:39 AM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Proyect updates revealed the need to redesign some parts, but the bike is almost complete and ready for a short production run.

Hope to make first 20 bikes before Christmas...

Orders welcome.



You can see the EL-5.8 compared to the first EL-1.8.

Nice evolution...








trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 14, 2012, 12:06 AM
Me Likee Motorbikee
Lukey B's Avatar
Melbourne Australia
Joined Nov 2009
1,140 Posts
Bike looks excellent... I've been watching the development for a long time...
I hope it pays off for you, I've thought of trying to do a similar thing of producing a complete bike...(nothin as well designed as your bike). It's a large outlay, and plenty of headaches... So I commend you on your commitment and Vision...

In regards to the bike... Very interesting design, I hope the wheels prove to stand up to decent crash... I think they could be a little weak where the spoke meets the rim, and hub... I hope I'm wrong though...

Best of luck... And hope to see it ready for Christmas...
Any idea of price yet..?
Lukey B is offline Find More Posts by Lukey B
Reply With Quote
Old Oct 14, 2012, 04:20 PM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Thank you very much for your comments/interest...

About wheelīs initial testing, rear one is much more hard than expected, but I need to do some track tests to get proper info about tyre gluing process and reliability.

I got a price in my mind, but it will depend on chassis equipment (body, wheels 1.0, wheels 2.0.....)

I plan to offer it "chassis built" and you would choose from two types of wheels.

Then youīll have to add your own esc, motor, servo, battery and 1/8 tyres and inserts (Venom or ZH/OTO) and body...

Second type of wheels will include factory glued tyres, but still a lot of development to do before launch date.....
trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 24, 2012, 04:44 PM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Some updates about this proyect.

The new wheels arrived past monday. Solid wheel profile for a "R...dies" style 1/8 wheel. Rubber rings are on the way too and Iīll try to start testing next week.





On the other side, Iīve completed the current bike and looks awesome (needless to say Iīm the proud Dad...)

Take a look at these pics and see the most beautiful 1/8 bike ever...








The complete bike (ready to run) is under 450 grams target...

"Hot ticket to win" next 2013 season.

But this proyect is not just a home built bike. Itīs a serious proyect to get the best performer in the small class. And new parts are on the way to improve it even farther.

Take a look at the new front swingarm "steering" leg...





trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 25, 2012, 02:22 AM
Registered User
CLKSPEED's Avatar
Joined Dec 2007
75 Posts
Spain is diferent, very good job trf_414_m2....




Greetings
CLKSPEED is offline Find More Posts by CLKSPEED
Reply With Quote
Old Oct 25, 2012, 02:39 AM
Registered User
Gartenzwerg's Avatar
Austria
Joined Jan 2007
630 Posts
looks crazy - Well Done!

Did you already find a way to glue the tires to the white rims?
Gartenzwerg is online now Find More Posts by Gartenzwerg
Reply With Quote
Old Oct 25, 2012, 11:11 AM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Muchas gracias CLK...



Gartenz, I didnīt tried to glue tyres yet but Iīm pretty confident.

More updates about this soon.

Start saving for Christmas gifts.

trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 25, 2012, 11:15 AM
Registered User
CLKSPEED's Avatar
Joined Dec 2007
75 Posts
Quote:
Originally Posted by trf_414_m2
Muchas gracias CLK...



Gartenz, I didnīt tried to glue tyres yet but Iīm pretty confident.

More updates about this soon.

Start saving for Christmas gifts.
De nada TFR ..tienes mucho talento...
CLKSPEED is offline Find More Posts by CLKSPEED
Reply With Quote
Old Oct 25, 2012, 04:26 PM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Iīve ciano glued both wheels/tyres tonight.

Iīm pretty confident about ciano glue because of some extra trimming work done at both rims (these prototypes feature so tight tolerances on tyre beads that made impossible install tyres...)

Once beads have been lightly filed, plastic accepted glue fairly well.

Iīll try to "hand rip" tyres tomorrow after a whole "properly taped" curing night process.

But Iīm still thinking about light epoxi...

trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 26, 2012, 05:08 PM
Kungsangen, Stockholm, Sweden
z_dad's Avatar
Sweden, Upplands-Bro Municipality
Joined Dec 2011
233 Posts
Congratulations on a really nice bike! I really believe it can be competitive.
My only concern, as I had with the early model too: Is the steering servo ideally placed, so far from the pivot point of the front suspension? It seems to me the servo gets thrown a lot front and back as the suspension works. On top of that it's high mounted. Is that a handling issue at all?

As you're making them...
In the future, maybe ROADIES type 1:8 tyres for the gpv/ZH-oto/Kyosho HOR?
I know I'm interested. Anyone else?
z_dad is offline Find More Posts by z_dad
Last edited by z_dad; Oct 26, 2012 at 05:29 PM.
Reply With Quote
Old Oct 26, 2012, 06:18 PM
Registered User
Espaņa, CL, Ávila
Joined Sep 2008
526 Posts
Thank you very much for your comments, Z-dad

The steering servo is placed almost inline with steering hub, just lightly offset to the left due to the servo design.

The front suspension travel doesnīt exceed any 1/8 forks one, so servo "launching" is not excesive. About CG placement, I had some issues at the very early designs (EL-1.8) due to the use of a verticaly mounted 1800mAh lipo battery (heavy and long) but not about servo placement.

When talking about handling interferences, these kind of suspension system and steering weights much less than a conventional forks, with those heavy triples and stem up there. Servo CG is placed at almost same height (maybe lower in my design) compared with any OTO/ZH/Venom bike.

The "R...dies" 1/8 tyres are not a real product yet. Didnīt find the right rubber for these wheels (in fact I did but discontinued...), but I want to test these wheels in order to check if I can get the same gyro effect with less load. These wheels are open from the inside and I can load them with lead tape to a very big radius.

Farther you place the same weight, more gyro you get. Want to get same gyro at a bigger radius? lower the mass from the inside of the wheel.

Overall bike weight will be lowered but same handling achieved due to the tuned front/rear gyros (wheels) and the lower CG
trf_414_m2 is offline Find More Posts by trf_414_m2
Reply With Quote
Old Oct 27, 2012, 04:04 AM
Registered User
patanegra's Avatar
Spain, CT, Rubi
Joined Feb 2012
29 Posts
Very Nice, I have wanted to see her run in the race
patanegra is offline Find More Posts by patanegra
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product Finally! SPW 5.8 and 900, and 5.8 Helical from Circular-Wireless sircana FPV Talk 28 Sep 22, 2012 11:58 AM
Sold Ripmax Pro Peak 13.8 V 8.5 A power supply lgibjones Aircraft - Electric - Batteries & Chargers (FS/W) 0 Jul 25, 2012 12:06 AM
Sold DJI 8" x 4.5" quad props x 8 BaracW Aircraft - Electric - Multirotor (FS/W) 1 Jul 22, 2012 08:32 PM
Wanted WTB Air Retracts- 5/8 bore x 1-5/8 stroke actuator Endlesslag Aircraft - General - Miscellaneous (FS/W) 12 Jun 25, 2012 06:13 PM
New Product Csc-el 3.8 trf_414_m2 Motorcycles 26 Dec 02, 2011 01:51 PM