Deecanios first build the "DC1"

Hey mate,

Sorry for the hounding i was blinded by the real possibility of a ride hahaha
great news on the controller - looking forward to a ride at 36 but you know 72 is where i want to be 8)
yes thought it was the white but just had niggle - plug it in and meter it,obvious really doh!!!
i'll use the 30a and the 35a cable on the snap lead then, good to know that's ok.
No ebikeing for me for another weekend but i'll be sneaking in bits all week ready for next saturday, are you using the puma this weekend?

cheers

D
 
Hey Dee,

I've been following your thread while working on my own Puma setup. Too bad you werent able to get that test ride in, it was looking like we were both going to get our 1st test rides in at the same time. Well I was able to get mine in running a 52v emoli lithium pack, it's SHWEEEET. Exceeded my expectations, you will not be disappointed especially if you get it going at 72v. If you run it at 37v for its 1st test run I'm estimating yours will max out at about 17mph with you 20" wheels. Mine almost hit 32mph and the torque is awesome. You can read all about it on my GT thread. Hope to read about your test ride soon.

Maytag
 
Yes

For sure in a 20 inch wheel the torque is good at 37V, the BMX motors have even more torque there is more copper in those motors and the new Pumas are going to be based on them as far as I can tell.

I took the 26 inch Puma out today and it performs great, the odd thing is it makes a different noise since I modified the controller! go figure that one! ha ha it kind of whines at a higher pitch! he he but still pulls like a train so we are all good to go.

Nothing to stop you running 100V on of these motors I think, time will tell.

Knoxie
 
Hey Maytag,

Yes i've been following your thread very closely too - particularly your battery pack, very nice job mate,very nice indeed - ugly battery packs and general dodgy mounting make the vast majority of ebikes unappealing to the masses IMO.
Yours is looking sweet, looking forward to see the covers you are going to use, glad the bike is running well, i hope my puma will really peform for me too - 17mph is a little slow but i went for 20's for more pull and less top end.
Knoxie is making cracking progress on the controller mod and hopefully he will mod mine too so i can bang 72v on my puma and really have a little rocket :)
i will get a test ride at 36v some time this week so i will post up speed etc,i have 2 x 36v lipos so i will be charging them both and using them both so they are both conditioned for when i am able to go the full 72v.
Can you get any video up ?????

Knoxie,

if you can get the whine higher it might be out of our hearing range, however you may have a lot of dogs following you :)
what did you get up to at the weekend puma and kmx? i took a look last night to see if you'd done one of your sunday night postings of action,lol i always check before bed as we seem to post first or last thing in the day.
will post up later in the week once i get a ride :)


D
 
Hey Dee,

I had an upsetting Sunday because my brand new Crystalyte controller died only 3mi into its 1st full test ride. Sorry no video yet, the only video we took was of my brother picking up the GT with one hand then grabbing it with both hands and lifting it over his head. It was taken with his camera so I dont know if he'll post it. Looks like the X5 vs Puma fight has officially been postponed :cry:
 
hey maytag,

my heart goes out to you bro, i'm feeling the pain from here :(
a minor setback though as i'm sure you'll figure it out and be back on the road as soon as possible :)
i would maybe crack on with the panels and do a bit of fine tuning if you need to wait for parts at all - i'm really liking the look of your GT, stealth in the extreme!!
Best of luck with the fix mate - i'll try and get a ride in this week and see how mine goes, im sort of prepared to have a few setbacks on the way too but thats where i'll iron out any little niggles and work on getting mine super stealth.

cheers


D
 
Hi DC

Yes it looks like Maytags controller has failed, he has also modified his wheel with thicker wire etc.

I didnt get out on the KMX this weekend, took the Puma 26 Incher out for a nice run! went shopping on it and run it hard kind of off Road on some loose single track, its kind of an old railway embankment if you like, it has been fine and pulls hard with the modified controller, the controller runs cool even today it was 70 deg and the controller wasnt even warm, this is good news the watts up meter confirmed it had been pulling 35A 1.3KW so thats good news, used about half the pack and the motor and controller were not hot at all.

So it is looking good, been looking in to getting a nice Topeak rack bag and rear rack to fit the batteries to when testing, with a view to moving it to my main bike, I want to do some nice long rides and dont want the lipos swinging around on my back for 3 hours!!

I am pretty confident its going to be ok this time, we shall see!! you have to test things hard to see if they are going to make the grade.

Looking forward to hearing how you get on with your bike, I am sure that it will be fine mate, 37V will be good fun for first test ride. Run it like this for a few weeks mate before you even think about going to 72V, in fact you would be better holding off until I can confirm the modified controller will do the business.

If it does Kenny will ship the controllers with these fets and washers in as standard.

Cheers

Knoxie
 
yep,hearing you knoxie no worries, i will run both batts though as you said and cycle them so they are both primed and ready for 72v.
great news on the temperature front mate i had been worrying a little about it after the weekend we have had! - lets hope that the fet mod is the answer to both heat and failure issues, then we can see how good the pumas are :)
i will wait until you are happy that the modded controller is rock solid at 72v but you know me mate i'll begging you to mod mine asap with bribes of good ol cash :)
i think i have my hands tied this week but saturday is all mine and i will be out on the bike for sure, i dont think 36v will excite me too much but i will be careful not to thrash and just let everything have an easy time for a few weeks.
I cannot wait to try it out at full power!!!

oh i forgot - im off to the NEC weekend after this one to the national bike show :) i will take a camera and see if there is any ebikes on sale if anyones interested? im going with a couple of freinds who don't even have bikes lol
i'm hoping to find the dc2 there :shock: ssssshhhhhhhh!!! dont tell the others!!


Cheers

D
 
Hi

Yes its early days but its looking good so far, its pulls very well and Like I said it runs cool a lot cooler than my 48V controller on the Trek, so it is a good sign.

Doing the full fet mod is a bit of a job but not one I wouldnt do again, I would also prefer to do it on a controller that has not blown to take out a lot of the test time as I check each phase totally down to component level and on the scope before it goes near the bike, this of course takes more time.

You may be able to tempt me should you have any problems, I think you will be surprised how good it runs at 37V dont forget you can pull 1.3KW in a 20 inch wheel that is dirt monkey power so a lot of fun in a small wheel on a bike with good suspension and brakes.

Sure on 72V it will rock and roll like on the video and you will need double torque arms and a good crash helmet.

So yep cmon lets see this beast of yours on the road, there are no excuses!! and whats this about bike shows!! you need to show us your bike

:lol:

Just think how cool it would be to race through the NEC on your electric e-bike!! ha ha that would be fun, they would never catch you!! ha ha

So cmon!! I could have built 20 ebikes by now!! ha ha :wink:

Knocko
 
LOL - yes i've been a bit slow with the build.
Thats my trouble though, the mrs has been breaking my balls about the state of our garden for over a year now so i've helping with that all weekend and most evenings this week :(
enough of the no news postings - my next post will be after a 36v test ride i promise!!!!!!



D
 
Thats my trouble though, the mrs has been breaking my balls about the state of our garden for over a year now so i've helping with that all weekend and most evenings this week
Click to expand...

Explain to the new Mrs. your ebike, when complete, can double as a rototiller. Then maybe she'll let you work on it more. :D
 
knoxie said:
I didnt get out on the KMX this weekend, took the Puma 26 Incher out for a nice run! went shopping on it and run it hard kind of off Road on some loose single track, its kind of an old railway embankment if you like, it has been fine and pulls hard with the modified controller, the controller runs cool even today it was 70 deg and the controller wasnt even warm, this is good news the watts up meter confirmed it had been pulling 35A 1.3KW so thats good news, used about half the pack and the motor and controller were not hot at all.
Click to expand...

Hey Knoxie, were u getting some good speeds out of the 26er?

Haydon.
 
High

Yes not bad it will do 24mph on level road 37V and it pulls very well up to that point. It actually out performs my Trek uphill! and thats 48V so it has got serious torque uphill.

On the flat you really feel it pull from about 8mph up to 18 then it ramps off up to 24, a nice useful curve. Its very quiet the new Puma almost silent to be honest, the nobbly tyres on the mtb make more noise (must get some road tyres on there) I like the Puma a lot, this MTB is so light as the Puma is only 6lbs and the battery is in my record bag, so once off the bike its like a normal mtb.

DCs machine is going to be sweet. He may have to get the controller modified to run 72V but its going to be nice at 37V.

The BMX is a riot at 37V but scary at 72V, it wont ever be run at 72V again for a number of reasons, it cant stop quick enough and hitting bumps is deadly. 37V is great though. Its a great summer park flyer!!!

72V you need a good bike under you, if not discs bloody good v brakes you need to treat 2-3kw with respect as moped power on bikes can literally tear metal.

Id be happy with 37V on a Puma but am going to make sure it will run maybe up to 100V with some current limiting.

Have fun!! im loving it now all my rides are running sweet just in time for spring/summer!! perfect

8)

Knoxie
 
hey all,

the lithiums are on charge and i can't wait any longer!!!
just doing final checks now and putting some vaseline in all my andersons.
tonight is the night :shock:
i'll try to get some pics but i'll probably be too wrapped up in riding if all goes well.
does anyone know if it is ok to leave the lithiums in a state of discharge for a day or two? i'm not sure i will get time to charge them again tonight and i want to ride both of them - anyone see any problems with this?

getting excited, my first ebike and my first ride :D
i hoping to get a few rides in tonight a few tomorrow and saturday (all road)
and then take the dc1 into the woods on sunday if all goes well - going to the lbs on sat morning to address the chain slippage issue and then i'm all set :lol:

can anyone tell me some good free software so that i can post some vids for you guys to see??
let me know what i need to do in order to get the video in the right format to post and i'll have some up by the end of the weekend - hope everyone is well.


Cheers


D
 
Yes you can leave the lipos totally flat it wont hurt at all, good luck with the run, I took the BMX up a bank today with my home made 4 ply torque arm and it spread it open like butter! only on 37V!! need to make a more substantial torque arm!! 2 is a good idea! torque monster!!

Cheers

Knoxie
 
hey guys :)

yes she lives!!
just got in about twenty mins ago and i'm still thawing so epect some typo's !
Drunkskunk,
haha yeh i had thought about how that statement sounded but didn't have time to change it as i had a launching to attend to ;)
hey knoxie, what can i say? you the man!!
where to start? well both batts went on charge and even though they both started at the same time one was "done" in an hour and twenty mins,the other was on for about three hours.i put the one that seemed "early" to me on the other charger but the charger flashed a green light?
anyway they both charged to 41v ish (should i be taking better note of charge times and voltages?lol)
i put one on the bike and something great happened - the drainbrain lit up with a lovely backlight 8) (thats a lovely piece of work from justin)
i took it as a sign that she was ready lifted the rear and gave the throttle a blip, very quiet rotation of fat 20" 2.5 inch knobby tyre followed :) wahey we're on!!
initially i must admit to dissapointment?? i opened it up and it soon reached a so-so top speed, not that quick i thought but couldnt really relate it to actually riding.
lol i was confused as to why the readings on the db were so low
:oops: worked it out eventually.
quick chomp of a makeshift cable and i was out the door lol
Bless, my mrs waited up while i was out even though she was shattered "just to make sure ".
after a lot of pissing about trying to get the cable out of the rucksack i finally managed to connect it under streetlight - need to think about this problem a LOT more.
ok everything checked and reassured by my pedal ride last week that everything was sound mechanically im off - gentle throttle twist and the puma pulled me wobble free off into the night.
i wont lie, i'd hit full throttle before id travelled fifty yards, i dont know what got into me, unless i had some extinct kick in from my tuned RD125LC days lmao :twisted:
i have to say much more impressive than the "wheel lift" test, it topped out at round the 17mph range just like maytag said it would, i'm guessing here as the speedo didn't work on db (i have to check i didnt disconnect it when "tidying" the cables)
didn't matter as that was reasonably quick anway and actually might be enough for in the forest, i never thought i'd say that but the puma really did pull me,uphill in partiular very well :)
i took it around the block were i live which consists of some good slopes and some flat - as i say top speed not bad but should be better but getting there? no problem,lol torquey torquey torquey!! i love it 8)
oh and quiet? yes very thank you!, even in the still of night stealthy, having watched knoxie bmx vids compulsively when he said it wasnt as noisy as it sounded i wasnt prepared for how much quieter this puma is. there will be no problem this with out in the woods and thats a big tick in the good box again.
i did give it a stab on the pedals and throttle a little too much at one point and the front came up like it was made of feathers
:shock: a four feet wheelie and a scared tap on the back brake saw the front come back but it actually made me start laughing,hard.
i took it up some pretty steep roads and she climbed like champ, no great speed but very game motor, accelerating upwards to top speed pretty quick no matter of incline.
as far as figures go i did see it pull 33 amps no problem and 1300w i checked it after making a good few climbs and the controller and motor didnt register any heat at all, i guess i was out for maybe 30 mins no peddling, i found that after the puma lurches forward with its first thrust the pedals are academic
:wink: i think i used 2.5 ah? sound about right? and the voltage had dropped from 41.5 to around 38? if my figures are right it seems that i will get a long ride? so im sceptical.i should have checked properly after the ride i know.
as i said initially i was slightly dissapointed but, on a now thawed reflection i am actually very very happy with this kit (must thank mark) and it all just plugged in and worked a treat - a must for a noober like me :)

oh, must say a thank you to all you guys for all of your help and advice - especially our own mr knox,cheers mate - im going to enjoy ebiking this summer mostly thx to you.

oh and i almost forgot, lets remember the dc1 is a 72v bike so this review/dull story is a half power assesment ;) happy days indeed !!!

now knoxie, about this fet upgrade.....................


cheers

D
 
Hi Dc

Hey that's great news! I told you that its a mega hill climber didn't I ? I have been trying to tell this to people for a long time and some still just don't believe me, so its nice to have you and Maytag on board.

I think they are a sweet motor at 37V, still lots of power and a nice useable top speed as well, I am sure 37V will be fine for you in the woods, don't forget if you want to extend the run times, you can make a bridging cable and run both the lipos in parallel, this is a good Idea as long as they are both charged first, you can of course take both and swap them but if you are going to take both I would run them in parallel.

On the Andersons did you get the split pins with your ones? you can connect them together by sliding them side by side and then putting the pin in place, this holds them nice and still and as they are keyed it will help you stop getting them the wrong way around (please don't do this it will destroy the controller).

I am glad you are enjoying it, like I said the BMX ripped my home made torque arm apart whilst I climbed this almost vertical railway embankment yesterday! I couldn't believe it! so for 72V you will need both torque arms securely fitted both sides! you don't want that sucker moving.

The difference between 37 and 72V is mental real mental, its literally 3 times quicker that's no lie, you will have to be careful not to come off the back in the woods. Get used to it at 37V and have fun, I am sure I may find the time to upgrade yours if it works ok on mine, I will make some more torque arms, well my buddy with a CNC machine will and I will put them both sides, with a quick release.

Lets see some video then or some pictures of the bike in the woods!! we need to see it in the wild!! ha ha

Glad that I could have helped you, also it sounds like your batteries were just at different levels of charge, they should take about 4 hours to charge fully, green light on solid, you can leave them on even when fully charged, I tend to wander in the garage and unplug them though just for good measure. After a few charge discharge cycles the terminal voltage will rise to about 42V fresh off the charger, the BMS will cut the pack if the terminal voltage drops below 29V, which is the low voltage cut off on the controller anyway.

Weather is looking nice for the weekend, get out there and rip!! full face helmet remember don't want you loosing any teeth for your wedding! ha ha

Cheers

Knoxie
 
Yes, it all sounds great. Yours is a climbing machine--I suggest you keep it at 37V in the long term: safer in the woods, great range, easier much easier on the battery by a factor of four if you stay with parallel instead of 72V,
easier on the motor's silent plastic gears too.

It's a purpose built bike you have there--try it at 72V. I think and expect you'll soon say: 36V in the woods, and maybe, maybe a series connection for fast runs on pavement,

yet...."kis". Maybe keep it simple? And be in mind always that greater speed raises risks in log fashion.
Logs in the woods.

You'll run all day on two parallel packs. All day I think,

you know what you're about. Kudos.

r.
 
Hi Reid

Yes I found this with the BMX although it is a lot of fun at 72V, its too fast and dangerous to be doing that on a BMX, I am much happier at 37V.

Also the 26 Inch Puma is great at 37V, its easy to escape from what you are trying to achieve at times, most people dont want 72V and the power and speed that comes with it! however I want to make sure it works should people want to do it, all the way up to and over 100V.

72V on a Puma is quite different from 72V in a none geared hub motor, you have to try it to understand what I mean, the low down torque is stupid on 72V, well you have seen the BMX video.

DC Has done a great job with this, nice and clean and light and powerful, perfect summer woods whizzer! just what he wanted, 72V will blow his socks off! and its funny DC I used to have an RD125LC as well!! ha ha they were fast!! showing may age here 36 years young!!

I think when Maytag, myself and DC get these machines settled at what ever voltage we like then other people may want to try, I like most of the kits out there at the moment, but there isn't any off the shelf hub motor other than the Puma that I know have that combines great low down torque and high speed at that voltage, without significant messing about.

Cheers

Knoxie
 
Hi All,

i'm absolutely shattered today as i didn't get to bed until 2.30am :?
Knoxie you had an lc too? it was a cracking bike, i had drop bars, full fairing,and a stan stevens stage 2 tune on mine, added to a rd350 allspeeds exhaust, s&b filter s&b reeds it made for a lightning 125 - 110mph top end with 12000 rpm!!! i loved that bike.
we must have had them around the same time too i guess as i'll be 36 in may :)
I couldn't agree more with you about the puma's torque, very nice indeed.
I will try running at 36v in the forest on sunday and im hearing you reid with the paralell option making for a good range and easier on everything, however i'm a 72v kinda guy 8) and i cannot wait to rig the dc1 up and see if i have made my bike what i've had in mind since conception.
I want it to blow my sox off!! 72v should give me the top speed im after and i can't wait to see how it rides with double torque and acceleration :D it will be a wild little bike for sure - i think thats going to be where i end up to be honest but i haven't ruled out a 48v setup either having been surprised by the 36v performance.
The dc1 is a test bike only and i'll tell you what i'm thinking now........
i am thinking that i will invest in a third lipo taking me to 106v :shock:
but i will not run it on the dc1.this setup with the puma motor will be for the dc2 - i've yet to pick a bike for that kind of power but im thinking of something like an iron horse downhill mtb, they are expensive but how much fun would one be at 100v+ with 7" of fork travel and 5" on the rear? (i might change to 24" wheels for that build as i'd have the power to compensate the loss of torque).i'll be looking next saturday at the bike show to see how one would suit electric.
Anyway enough of the dc2 as i haven't finished the dc1 yet lol - i'll be happy for a while at 36 but it's always been heading for 72v, i think this will be the limit of what this bike can safely do.
Knoxie can i ask if you get the arms made on cnc by your mate is there any chance he would make copies of my current arms? i'm kind of happy with them but an exact copy with no weld would be great - do you think i need to put arms both sides at 72v making 4 total ?
I cannot wait to run my bike at full tilt in the forest so i'm hoping you can upgrade my controller and i'll see you right mate!!! lol poor knoxie, im like a starving dog and paul has a steak shop!!!lol

Im going to try and get out in the daylight today :) so i might just edge into the forest later-if i can ill get some video but i'm not really sure how to upload it and stuff - do i need any special software at all?

anyway better do some work - thank you all who've helped and followed my thread from day one, i really appreciate all your input!!


Cheers all


D
 
Well done dude. looks like one hell of a bike! I for one followed your threads all the way from the old Vis forum....its been a long road :D
 
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