I wanted to say something clever, the engineering on your boards is quite next level!
Thanks but itās not that clever.
Just old good sense about horse cart and bridges.
Countystyle engineering, with a boardriding passion.
Ok, the bow-string bridge above is similar to the Flexboardz structure with a compressed upper part and a tensionned under part.
Not sure to be really clearā¦
Could also mean you are so frustrated from the previous iterations, that you want to hang yourself from a bridge 
Haha! I didnāt see it this way but you are right, obviously, my posts are a bit minimalist/depressiveā¦
But as long as I have not completed the project, a fully fonctional EFlex, I have to be humble.
However, if I regret the time spent on many useless trials/errors, Iām quite happy with the result and iām impatient to ride it.
NB: rule nĀ°1 for an inventor: always live on the groundfloor (and away from bridge)
Here is a better explanation of the Flex structure and the similarity with a bowstring bridge.
And like on a bowstring bridge, the upper part of the deck is compressed and the lower part is under tension.
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Regarding the wire below, itās Dyneema lines (used for sailing or kiting) and thatās what is used to handle the tension in the lower part of protos 2 and 3.
And, even if I love sciences, technologies, ā¦ and even if I am generally āover optimisticā, I never felt fully confortable riding on strings, so I gave up after months making knots, splices,ā¦
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Hi @Flexboardz, I just saw my old Flexboardz collecting dust in the garage and thought āit would be fantastic to electrify this oneā. A quick google and I found you, the genius behind this board, doing exactly that! From what you have learned in this project, how would you recommend that I go forward?
What about chain-drive as a cheap quick way to get going?
I see that you have replaced your swinger arms. Can you see a way to use the original arms? Thanks
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Hi @andy7,
Thanks for your kind words. Yes, Iām the stubborn guys behind the Flexboardz design.
Just for my curiosity, for how long have you owned your Flex?
The easiest way will be to make a motor mount with folded aluminium plate like on the protos above (I can send you detailled pics).
Yes, chain-drive is a cheap/robust way to get going.
I didnāt plan to post pics of this boards without its electric stuff since itās an E-board forum but your post made me euphoric.
P.S.: Iām not proud of the Ferrari painting ā¦
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I think I have owned my Flex for about 12 years. I bought it second hand as I found out about them during your production issues.
If you could send me some detailed pics it would be great, thanks! Even better if you could draw on them how you mean the motor mounts would go.
The Ferrari paint is cool, everything red goes faster!
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Thanks for your answer. Iām always happy to see that the Flexboardz have a long lifeā¦
I will install the motors today and make some detailled pictures of the motor mount.
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Those boards keep getting more and more sexy,
Could you give a wild approximation of how much a rolling chassis like this would cost if it ever hit the market ?
Here are pictures of the motor mount (yes itās very poorly made).
Itās made with a folded 1.5 mm aluminium sheet (cheap and easy to find) with few layers of carbon + epoxy (4 to 5 mm thick).
If you have better tooling than me, you can use thicker aluminium (3 mm) without fibercabon.
As you can see on the second pics, there is a āslotā in the mount engaged on the arm to prevent rotation.
Itās screwed on the arm with the wheel axle. You probably will need a longer wheel axle too (it can be made with a good quality threaded bar steel).
Do not hesitate if you need more information.
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Thank you very much!
I assume this is for use together with the āinternal gear transmissionā you used rather than with chain and sprocket as the motor axle would be inside the wheel?
Thanks for your interest into Flexboardz and thanks for your question (that I have been asking to myself for a while).
It depends also of what we call a rolling chassis. Does it includes wheels+transmission?
On the short run, for forum members that already have a DIY E-board (with wheels, transmission, electric package), it makes sense to sell ānakedā chassis (without wheel/transmission).
Iām working to reduce the number of expensive parts/process and/or complicate" supplier (high price, high quatity, long delay).
The easy solution is to use composite material and to do it myself using composite material. Iāve been working to find efficient ways to make it (composite can be a slavery if not well handled)
So, Iāve not yet computed the exact price/cost into euros/Usd but it will be cheaper than competitors (I agree that calculating it from Trampa pricelist is not really fair 
).
On the other hand, what would you consider a fair price for a ānakedā rolling chassis?
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No, this motor mount is made for belt/chain/external gear.
You will need to adjust the distance between motor axle and wheel axle according to the sprockets/chain that you will order.
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Truth is I have absolutely no idea.
Itās quite different from the usual deck + trucks we are used to use and their prices.
Thereās one voice inside of me that says Iād want it to be affordable so I could get one
the other voice says that youāve been puting there a crazy amount of time on reaserche, development and realisation
more than most of the people who sell custom esk8 parts at prices that are already far out of my league.
On the other hand most of us have no idea how it feels riding one of those as they are so different from what we are used to as skates, so maybe some people would be a bit more reluctant to put the money on the table.
Personaly Iām quite curious though. If I was still in france Iād take a train to come and bother you in person XD
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Thank you, now I will go on a hunt for a secondhand DIY board to scavenge all the esk8 parts from
I basically agree with your 2 points, being affordable but to prove first the interest of the new design.
Having produced and sold boards, I must admit that Iāve been shocked by some āexoticā prices for weird products. We are talking about boards not cars, something that needs to be affordable for teenagers (with a bit of money).
For your second point, I plan to have it tested/reviewed by others riders to validate at first the reliability (if you read above, you will see that some of my boards are still riding 20 years laterā¦but it was after a bankrupty due to reimbursing clients after a production defaultā¦Iām old and careful) and to give their riding feelings about the Flex design (independant leaning wheels).
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