gudah

Unfortunately my boys took the BMX ..so I went scrapheap-challenge in my own garage to find som junk to put together into some kind of bike and its coming together slowly. Will try to post pics as it proceeds. Anyone knows how to get the pic from my ipad in here btw?

Neat looking bike! Were there any specs given?

Anyone seen it yet? Please post pics if you have seen it. Their new MX- bike for 2015 sure looks serious to me but with a 24" concept... Now we are talking..thank you Oset from all us six feet tall kids;-).

Sorry, i meant a 2:1 recuction before the 11/90 gearing ( or perhaps after would be the best to reduce the dia of the rear sprocket). Im grateful for all input and the 36v is probably smarter, powerwise.the sla's are just initial, will go to lipo if it turns out fun:-). Think ill also try to put a bikecomputer on our oset 20 to get a feel for if 10 mph is too slow or not. (research on two wheels is always fun). Also, one idea is that it could work for my kids if. It doesnt pull my 75 kgs well it will do better with 30 perhaps.

Believe a top speed at about 10 mph/15 km/h should do it and with the 2750 rpm motor ive got I am looking at approx 20 mph on a 20" wheel( in theory) but like you suggested i also think it may be undermotorised. Adding a battery to make it 36 Volts.. Im not sure this lowbudget motor has enough emf to produce more work Than perhaps a bit more exess heat out of it. So im looking for a reduction stage from 2:1, perhaps i can use a twin chain setup allowing also a more generous Range of motor mounting positions(Bad English, sorry im Swedish).

I´m not sure if i´m straying too far off-topic but i Intend to use it as a "Trailbike" ;-) Anyway.. Building an E-BMX seems like a neat Winters project so any advice on how to build one is welcome. Available parts, sofar. An old BMX 20" 24 V 350W Brushed DC Motor With a 25A Controller in good condition. 90 T sprocket, front is 11 T #25 Chain(Same as on the small OSET´s). 2* 12V 9Ah SLA batteries(Same casing as the normal 7.2 Ah´s).

Hi! Go with OSET´s original upgrade kit. -I cheaped out and ripped mine off from a second hand bike and that got me trouble as the osets left hand lever connects with the rear brake, (opposite to the bike i took the kit from). The result was that the air-bleeding didn´t work and i had to pay a local bike dealer to reassemble the whole system with the hydraulic lines refitted to the right levers getting the right/left in order. -Im great at math, especially aftermath..

Iv´e built aswell as bought ready OSET bikes: 1)Homemade 12.5/24V bike.(replica..sort of). 2)Bought and built a 16/36V bike in factory spec. (with phone support from osetbikes, many thanks!) 3)Bought and built a homemade, "Youtube-Spec" 20"/36V bike based on a 16" with extended rear swing, new fork and of course 20" wheels. 4)Bought a standard 20" 48V Bike. I have a mechanic/electrician-mixed background and also have access to a decently equipped garage. My idea was to teach my kids, 7/5/3 at the time to see "how it´s done" as i had quite a few nostalgic memories of me hanging out with my dad in his garage in the early eighties...all i can say is " the times they are a changin" my friend . Todays kids(Mine anyway) dont cope too well with anticipation/waiting(Sorry, i´m Swedish) Anyway, if you are a handy person it can be done, but i doubt that it is much cheaper in the end. (It is easy to forget all the small parts that goes on a bike and then you need to place an other spareparts order etc, etc) Most of the "improvements" i made to the bikes i have later altered back to factory spec.;-) Should i do it again i´d go for a used bike, Saw a used one in good condition at approx 7500 SEK(£700) here in Sweden a few months ago. The bikes are fantastic btw. We ride them just for fun, trailriding more than trials as we live outback and have nice riding areas. Not a single angry comment from those who has seen us riding them for 2 1/2 years now, Other kids with petrol bikes come along sometimes when we ride but my kids don´t find those bikes much interesting so i´m glad as long as they stay electric..