Grayborg Warp g

HAL9000v2.0 said:
Few days ago the price was 2,65$ and now 3,05 !!!
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I noticed that last night while browsing my future purchase needs. If you go directly to Tenergy (you need to create a login to get inside their direct pricing structure) they are selling the same cells for $2.99 direct.

Sometimes I think what happens is these online resellers buy in large volumes so that they can get a high volume price and then sell at a discount and make a profit. In the beginning they sell at a higher price, but people don't buy them as fast so the inventory sits for awhile. After six months or a year of sitting they realize they have to dump their inventory, so they drop the price. Once that runs out they raise the price again.

The six months to a year counts against the calender life of the battery so you are buying "less" battery when you buy it cheap and second hand. But probably not by much.

:arrow: You can't go wrong buying from the source because they "should" be brand new...
 
How do you charge a bunch of loose cells wired into a custom pack?
 
Mark_A_W said:
How do you charge a bunch of loose cells wired into a custom pack?
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Carefully.

Two usual methods:

RC modeler's method: Get a big custom built charger to charge them all as one unit, and then use blinky or resistance type balancers to drain cells down to the value of the weakest cell, and recharge again.

Single charger method: buy enough small chargers ( ones capable of charging a single cell ), and attach one charger to each parallel bank and charge all banks to full at the same time.
 
As I can not fit Kelly and 6 slas in existing frame, new one is coming. Simple CroMo tubes and thin carbon casing. Swing arm with chain inside and custom gearbox with 10 speed and 982% ratio difference.

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Looks good Zvonimir!

How does the chain run from the cranks to the rear wheel exactly?


That's ProE isn't it? Eeek!! You should try UG NX5!
 
I'll give you a hint. "10speeds, 22sprockets". Still working on it. I am not quite sure how will it work, but I think it will.

It is ProE. Why nobody likes it? After Solidworks and Catia it is so simple...
 
Finally I have finished new "high speed" fork.
Disc is 305mm dia. All is made out of alu yet still has 4,2kg but "safe" (not you !!!) was the main reason to do it. This one does not bend and it is way better over the bumps. Travel is 120mm but with another spring can go up to 320mm. All is alu except tubes and disc inox. Everything can be adjusted; hight, spring preload, rebound, angle and castor. Main problem was spokes, but finally I found 238mm and do the 5th hole pattern. Now I am looking for 222mm and 2,5mm dia so I can make same pattern as on rear wheel.

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Wow.

Did you make the forks from scratch?

And where did you get the headlight/fairing assembly?
 
not yet...still have to make new swingarm and gearbox...then 74V24Ah...but must admit that these SLAs do the job just fine...I do only 30-40 km/day... they can do about 50-60 km range...but nevertheless LiPOFe4 will come...
 
Finaly I found a nice speed computer to see my actual speed. Here is video from yesterday. On youtube the picture is even worse. Itis made with my phone camera but something is wrong with decoding...anyway...this is 1km road top speed is 67kmh and average is 47kmh mainly uphill. Kelly was on speed mode on 60% current, Accu was on 79,2V at start...


 
How much does the fork weigh? New vs old.
 
Old one together with handle bar was 2,3kg new one is 6,2. Now complete bike is just over 50kg (20 front,30 rear). Next goes some lithium but same weight with more Ah...

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