Turnigy HXT Powered Custom Cruiser Worklog

[AussieJester]

Back to the big talk knocking frock motors I see.

When did i stop?

When can I expect my advanced notice?

For what exactly John? i can't give you "advanced notice"
for a race your planning John im not a mind reader.

When you have an electric bicycle and race rules let me know.

KiM

 

[John in CR]

"Electric Bicycle"- hmm, 2 wheels+electric motor+pedals= electric bike. In fact, I'm probably the only one with any decent performance around here that has an electric bike that's street legal. My only other transport is my van, and I'm not going to race you with that, since my bikes are faster, at least up to a mile or so.

Notice- Just let me know when you're ready. I asked for a week notice because I use mine daily, so I want to take it out of commission to put on the new controller when it's convenient and have a day or so in case I need to program different settings and to find myself a race course along with a day without rain now that our weather is changing.

Rules- I suggested 1/2 mile or more with a there and back course to eliminate any wind or change in elevation benefit. We record by video and GPS and send them to a 3rd party to combine them and find out the results. Side by side on here would be great to find out who wins. Other than that, the only other rules I can think of are no kicking, biting, eye gouging, etc., but I'm open for whatever. 8)

John

 

[enoob]

I repaired both of my Methods controllers

id eat goat nuts to know what you had to do to fix one of methods controllers.

been tinkering with a setup of my own and any knowledge on how to mod one of these would be invaluable

 

[AussieJester]

I suggested 1/2 mile or more with a there and back course to eliminate any wind or change in elevation benefit.

Thats not going to work, how are the elevations going to be even remotely similar seeing i live in the hills and from what i see in Lukes videos you have flat land everywhere, i couldnt find 1/2 mile of flat road up here. Only fair race can be over a straight line. I think 400 meters (1/4 mile) straight run is the only way, theres too many variables on a mile road course for it to be equal for both parties.

Yes i would also like to hear what Methods did wrong with the controllers John what ended up being the problem with them?

KiM

 

[John in CR]

I suggested 1/2 mile or more with a there and back course to eliminate any wind or change in elevation benefit.

Thats not going to work, how are the elevations going to be even remotely similar seeing i live in the hills and from what i see in Lukes videos you have flat land everywhere, i couldnt find 1/2 mile of flat road up here. Only fair race can be over a straight line. I think 400 meters (1/4 mile) straight run is the only way, theres too many variables on a mile road course for it to be equal for both parties.

Yes i would also like to hear what Methods did wrong with the controllers John what ended up being the problem with them?

KiM

A half mile is 1/4 there and back, but I see the turn would be a problem, probably for both of us. Straight shot is fine. We'll go on the honor system regarding the wind. The GPS's will give us elevation, so let's say max of 1m difference in elevation between the start and finish lines.

Ok, that leaves agreeing on a distance. For simplicity, how about 600m? Of course I'm going to push for a longer distance, and would really like a mile, but that wouldn't be fair to you. I'm probably running higher power (but higher weight, so power to weight is ???), but my significantly higher Kv at the wheel means I'll be playing catch up off the line. It should actually be a pretty interesting race.

Regarding the Methods controllers, one worked fine and suffered a short and was repaired while Luke was here. It blew the the same phase of fets again the day after Luke left while hauling me up a moderate hill at moderate throttle. I don't think anyone appreciated how hard high speed wind motors can be on controllers with current limiting coming into play at high currents. I don't fault him for that, and we all learned something.

The Methods modded Xlyte 18fet controller didn't work for me out of the box. Apparently it only worked at maximum voltage, 100v. I guess it never dawned on him that a 24v-100v controller should be tested at more than only 100.8v . He did help me determine that it's a problem in the comparator circuit, which works differently than most controllers. That made the changing resistor route invalid, but getting into that tiny surface mount chip stuff is beyond my capacity. Thank goodness Lyen posted, and I read, his idea to do away with the typical low voltage converter stuff and just use a switching power supply, so I took it upon myself to go that route with virtually no guidance, and it looks like it will work just fine. Plus it gets rid of those hot resistors, so it's a bit more efficient, but more importantly it gets some heat sources out of a controller that my motors will putting under stress.

The end result is that I have a better than new controller and learned some stuff in the process. An apology for the ridiculous treatment would be nice, but I'm not holding my breath.

 

[GGoodrum]

Gary, cheers for the run down on the pack construction, what i was trying to explain
(albeit badly LoL) was
an arrangement like this-->

6 packs on the bottom 3 packs on the top, the adapter boards could be placed on the top of the lower 3 packs
either side of the 3 top packs...I can fit the packs like this end to end in my enclosure, i can't fit 9 standing upright
due to the 'sloping' shape of the rear of the enclosure...

That will work. If you leave the gap, like you've shown in the drawing, you could put the LVC/HVC boards in between the lower packs, in the gap.

I finished your Charge Controller. I'm working on the Battey Medic Booster now.





Should be able to get everything shipped out tomorrow (Monday...), so you'll get it before the weekend, with any luck.

-- Gary

 

[AussieJester]

Mr GGooDrum SiiiiR very nice mate!!! I have even been playing with the Infineon i thought i destroyed in hope i can get 66v happening sooner than later! Controller is ready for testing and i am on the fence about fitting the halls to the motor now,
i may wimp out and do as GWhy suggested and use the external mounting system instead of internal mounting the halls
Just so paranoid about breaking the motor and bloody HobbyCity are as slow as the second coming getting stock
of them..Cheers Gary

John...If i am lucky ill be able to do the run officially on a 1/4mile track
so the timing will be official and the track is world standard :wink:
I would be in for longer distance but as mentioned i would be hard pressed to find a flat unused piece of road up here longer
than 200 meters...I was thinking an Athletics track? there 400 meters around do you have any there you could get onto for a few
timed laps maybe?
If i can get one of the mates to cart the bike somewhere off the hill i will
let you know and we can do a full mile (~1.6km? or there abouts?) Either way there little point until
i have the 180kv motor and Infineons setup as the bike is currently geared for 60km
would be great for 60foot but suffer top end, with planned setup though it
will definitely be interesting, i should have you off the start as you say and then you will catch up
on the top end no doubt, could be a photo finish as they say haha ...should be very interesting anywayz...

Shall be re-painting top of the battery enclosure today theres a small 'dimple' doesn't show up in the pics but if you get it in the right light and angle its visible and its annoying me, hopefully my second scooter wheel arrives sooner than latter and i can fit my stabilisers
and gets some video to conclude this draaaaawn out worklog haha...

KiM

 

[Hyena]

hopefully my second scooter wheel arrives sooner than latter and i can fit my stabilisers
and gets some video to conclude this draaaaawn out worklog haha...

A happy, yet sad day. But c'mon mate, you know this thread still has plenty to give

Matt your trike is insane! That's awesome power, very impressive! One of the things that deters me from RC drives is the noise from the motors, but when it's drowned out by the sound of screeching tires... well....

edit: 1st on pg 69 - carry on ladies

 

[John in CR]

I'm sure there must be some athletic tracks, but even paved I don't think I'd be wanting to take that second curve at that speed. My bike is a cruiser like yours, not a road racer. There's a race track not that far from here. I've never been, so I'll have to go check it out to see what facilities they have. Maybe they have a road course. Waiting is fine, since by then I should have my dual hubbie all tuned up, and then there's also the secret weapon on the horizon too. It's looking to me like the MENS group leader bit off a bit more than he can chew, because I'm not running some candy ass hub kit bike designed for commuting at 20mph.

John

 

[AussieJester]

A happy, yet sad day. But c'mon mate, you know this thread still has plenty to give

There will be some updates periodically as components become available but the majority of the build is already complete, anything else that is done from this point on has already been planned for and is a simple 'bolt on' scenario.

I will be back with a completely new project I think you will be most interested in Hyena. Hal has the 12kw motors i'll use. I have the ANDRA (Australia National Drag Racing Association) electric rules printed out and shall be making this bike 100% compliant with those so they can't stop me from having it run on the 1/4 mile (unlikely ridden by me however) i want to keep the weight to around 50 kilo so
i have a big power/weight advantage. Be alot of CF & aluminium in the build to obtain this goal...I already have few pages of rough sketches will up these soon.

KiM

 

[rodgah]

page 69 wooot :lol:

 

[etard]

Just wanted to make sure I got a post on 69 as well. WOOT WOOT!!

[youtube]JrE0htiKU9k[/youtube]

 

[gtadmin]

Hi AJ, if this is almost done and dusted, and you have a couple of spare minutes, could you do me a favour please?

I'm building a cruiser style bike frame from scratch, with wheelbase of 1350mm, head angle 60 degrees and trail of 60mm. How close is this to yours?

Cheers mate

 

[02jze]

Oh my i f***ing love that trike. How fun would that be to ride... I love skids.

 

[AussieJester]

I haven't posted much on this thread, but have waded through the last 68 pages along with everybody else... and wanted to post on Pg 69...

Frank... sorry for the delay........RP002525244AU <--Track that my Canadian mate... Kelly controller some Vegemite and a kangaroo scrotum

KiM

 

[AussieJester]

Hi AJ, if this is almost done and dusted, and you have a couple of spare minutes, could you do me a favour please?

I'm building a cruiser style bike frame from scratch, with wheelbase of 1350mm, head angle 60 degrees and trail of 60mm. How close is this to yours?

Cheers mate

i have ~ 45 degrees rake 1670mm axle to axle and ~3in trail...

KiM

p.s the bike is now mobile as of late last night WOOOOOOOT...videos in a few days to close the log out..

 

[enoob]

to close the log out..

pppffffff

dual motors ? more volts ?

close the log out ? are you sure you dont mean "take a break and enjoy a few weeks of riding before starting up again"

need my custom cruiser worklog fix man . dont take it away
do skid do skid. if you do i will

 

[John in CR]

p.s the bike is now mobile as of late last night WOOOOOOOT.

Sounds like race time to me. Saturday sounds good.

 

[gtadmin]

Hi AJ, if this is almost done and dusted, and you have a couple of spare minutes, could you do me a favour please?

I'm building a cruiser style bike frame from scratch, with wheelbase of 1350mm, head angle 60 degrees and trail of 60mm. How close is this to yours?

Cheers mate

i have ~ 60 degrees rake 1670mm axle to axle and ~3in trail...

KiM

p.s the bike is now mobile as of late last night WOOOOOOOT...videos in a few days to close the log out..

Thanks mate

 

[AussieJester]

to close the log out..

pppffffff

dual motors ? more volts ?

close the log out ? are you sure you dont mean "take a break and enjoy a few weeks of riding before starting up again"

need my custom cruiser worklog fix man . dont take it away
do skid do skid. if you do i will

hahaa yes there will be some additions but that can't happen till i
can actually get hold of the motors, I'm keen to get onto the
next build will start making a solid frame jig later in the week i think.
Then ill need to source some foam for the frame ::wink::

KiM

 

[enoob]

ooooh even better .

carbon fibre custom cruiser worklog.

carry on.


whoo hoo . i got on 69 twice

 

[AussieJester]

ooooh even better .

carbon fibre custom cruiser worklog.

Thats the plan, if i don't go through with it
i will do it in chromo ...either way i would really
like to have the weight under that of this crusier (55kg all told)
It won't be an e-bicycle either will be full blown 1/4 mile bike
hopefully capable of getting into the low 12's with a decent rider
on it.

We were discussing the build last night with 3 of my good freinds
none of them want to ride it hahaa but think i can get a rider
on it simply be roaming the pits and asking one of the gasser bikers
to throw a leg over it. Would like to ride it myself but have to be realalistic
doing over 100mph on 1/4 mile strip aint something i will be capable of i dont
think...will see...ill definately ride it just not to its full potential in
a short stretch, wont have an issue on a long road.

I'll likely look about for a dedicated drag racing forum to up the worklog on too
perhaps Luke could recommend one?

KiM

 

[rodgah]

pick me pick me hehehe, ive done sub 10s before on our crappy pot holed strip, im sure i could handle it. infact i used to pull a high 11 low 12 on one wheel the whole 400m. I dont know whether carbon would be such a good choice though, the brake force required at the end of a ~160-170km/h run is pretty imense, depending totally on the run off area you have to stop of course. 99% of that force acted through the front end, would be some crazy loads. sure you have already thought about this though so ill just shuddup haha.

rodger

 

[John in CR]

Maybe Luke can find some more big pieces of carbon through his surplus contacts. He got some crazy cheap, and that stuff is typically crazy expensive. I definitely want to do some composite builds. For now I just have to stick with fiberglass due to the price. Epoxy ends up the primary cost. I don't care that much about weight; it's the ability to easily get any shape I want that I like. That's why I'm so interested in the balsa logs that Harold in CR can get. Apparently the stuff is treated like a trash wood down here.

John

 

[AussieJester]

pick me pick me hehehe, ive done sub 10s before on our crappy pot holed strip, im sure i could handle it. infact i used to pull a high 11 low 12 on one wheel the whole 400m. I dont know whether carbon would be such a good choice though, the brake force required at the end of a ~160-170km/h run is pretty imense, depending totally on the run off area you have to stop of course. 99% of that force acted through the front end, would be some crazy loads. sure you have already thought about this though so ill just shuddup haha.

rodger

If you can make it over West no probs at all mate happy to let you ride it, i let anyone ride my bikes (within reason)
As to the carbon fiber i agree, i should of mentioned it will be a blend of carbon fiber and chromo, the mid section of the frame will consist of carbon fiber the head tub section will be chromo. If i go with carbon fiber it will be well over built. I need to workout the amount of carbon fiber needed this is the costly part polyester resin is cheap as chips it was around 15 bucks a 2 liter tin, but at ~100 bucks a square meter for carbon fiber a frame is going to be costly.

John...balso wood sounds like the shot i recall Harold mentioning he had this you should catch up with him he sounds like a nice chap shall be going the tried and tested foam method myself only thing got me slightly concerned is the attachment of the metal to the carbon fiber as in head tube and dropours... shall brainstorm and do some more research before making a final decision ...I guess aluminium frame isn't out of the question if i can find a reasonably priced ac/dc tig haha yeah well...can always dream i guess...

KiM