GCinDC's Giant DH Comp

[crusoe]

Haha! I have to, my HS3540 goes to 100C in no time at 100v hot off the charger. I'm only running 76 phase and 50 rated current too. It's totally unmodded HS also. The motor is pretty garbage on the street if you want to go fast for a long time, but on the trails it's absolutely perfect!

[GCinDC]

Haha! I have to, my HS3540 goes to 100C in no time at 100v hot off the charger. I'm only running 76 phase and 50 rated current too. It's totally unmodded HS also. The motor is pretty garbage on the street if you want to go fast for a long time, but on the trails it's absolutely perfect!

did you program your controller?

something smells fishy.

first off, i thought phase amps should be set to 2.3x rated. not sure, but that's what i thought...

secondly, did you calibrate your CA? if the rshunt isn't set properly, you could be drawing fewer (or more) amps than display.

the reason i ask is that @80V, i can't pedal fast enough to make any difference whatsoever (w/ 42T front, 13 rear).

what's your top speed? to pedal hard at top speed, i'd think you'd need to have a 56 in place... or you're only pulling 20amps max... but your motor wouldn't cook that quick.. hmmmmph.

[crusoe]

I did, and here are my settings:

It's the 18 FET 4115 Mark II 84-132V Real Highway Speed LYEN Edition Controller

I think you're correct about phase settings, but I put everything lower than suggested until I get used to the motor and its habits/mine

I have not calibrated my CA. It's the Large Screen Direct Plug-in Cycle Analyst with Speedometer Cable, Version 2.23.

Top speed is 69.8 km/h at those listed settings in the image.

[GCinDC]

I have not calibrated my CA.

ask lyen for the rshunt value for your controller (and while you're at it, ask him for the file he programmed it with - handy to have to default to later if nec..)

then start the CA, hold a button till setup flashes, and go into the advanced settings and set the rshunt accordingly. check the manual.

a bigger front chain ring will help. i'm quite pleased w/ 44t / 13t up till 45mph. you can go for the bigger chain ring, might help for when you swap out the hs3540 for a cromotor.

[flyinmonkie]

Greg,

Here's the bike you should have gotten. Too bad there is only one.

http://www.krutor.cz/bikes/hrotor/en.htm

Clay

[Sacman]

the controller's in the way.

so time to move it. decided to stick it at the bottom of the down tube, where they commonly seem to go. keeping it cool will be a priority soon...

Funny that's where I had mounted my controller but I had to move it 'cause all the sludge buildup from all the junk the front tire kept slinging onto the controller. I guess front tire fenders could do a lot to keep that controller dry and clean.

[GCinDC]

I had mounted my controller but I had to move it 'cause all the sludge buildup

i guess that will be an issue. i just think it'll overheat if it's inside the triangle, which i could do if i did this:

talk about a strong box. holy cow!

looks pretty frackin big tho, and high up...

the main reason is to counterbalance weight of m/c wheel...

[GCinDC]

[GCinDC]

i will never stop working on this bike. the closer i seem to get the farther i seem to be.... whoever said i should get a stealth, len, no comment please.

i'm all excited to lace the hs3540 into the 19" MC wheel and pump her full of oil.

but i really need to service the forks. i considered it last night, but i need to allow myself a couple hours...

and now that will be put off a bit longer as tonight i'll need to rebuild the rear hydraulic brakes. i'd never ordered the longer stainless cable from CRC. and awhile back, the rotor had cut some threads in the stainless woven cable, and today, i had to skid hard in traffic (cabbie ) and the cable gave way, pissing oil. video to come but i doubt it will show much.

so i hit the lbs and of course it'd be days before they could bring it in, but they were happy to talk to me about it for an hour with both stands empty. and they actually had some parts:

20120502_125851.jpg (169.58 KiB) Viewed 211 times

i'll be replacing both warped rotors as well.

[Sacman]

I had mounted my controller but I had to move it 'cause all the sludge buildup

i guess that will be an issue. i just think it'll overheat if it's inside the triangle, which i could do if i did this:

talk about a strong box. holy cow!

looks pretty frackin big tho, and high up...

the main reason is to counterbalance weight of m/c wheel...

Why don't you just put the controller on the forks (instead of the strong box) and put the batts back in the triangle. You might have to get creative with how you run the wires to the controller. Run it mostly vertically as you go from fork to main frame. That way the wires just twist gently (instead of fold) as you steer the front wheel right or left.

Yeah I moved my controller on my Stinky from where you have yours to higher and above the bottom tube for now, and the batts are on me on in a backpack. I'm still experimenting where to place all these heavy electric parts. Not much mounting room left on these DH bikes once you've elimminated mounting to moving suspension areas.

[gensem]

GC if you must use the controller in a somewhat closed environment, just use a hi cfm computer fan. Your controller ll be cooler than it was before.
Downside is that a DC-DC converter is needed.

[GCinDC]

GC if you must use the controller in a somewhat closed environment, just use a hi cfm computer fan. Your controller ll be cooler than it was before.
Downside is that a DC-DC converter is needed.

good idea. where to vent? hmm.

having second thoughts about the pelican. we'll see.

today's episode, squirting juice in first scene, then some shenanigans (w/ front brake only) anyway. plus a morning clip or two.

hookworms don't have the best stopping power, i find. squeely ain't they?

[gensem]

good idea. where to vent? hmm.

having second thoughts about the pelican. we'll see.
hookworms don't have the best stopping power, i find. squeely ain't they?

Put some load on the pelican and go for a spin, its not bad at all.
If you get a 80mm fan that has about 80cfm you can mount it anywhere you like it. Im using one fan near the frame headset area inside the triangle.

[GCinDC]

i've got some more lipo coming, and am thinking of running 25s to get that mc tire moving faster, so it really depends on how i arrange them..

was about to delete the unused footage from today's ride, but i thought i'd go ahead and show you

[rui_fujino]

i've got some more lipo coming, and am thinking of running 25s to get that mc tire moving faster, so it really depends on how i arrange them..

was about to delete the unused footage from today's ride, but i thought i'd go ahead and show you

that's pretty strong head light! is that the one you connected to the CA?

[GCinDC]

strong for the price and convenience! not really otherwise, compared to other things. in fact i should do a side by side with the p7(?). i don't ride at night much, so honestly, a strobe might even be more effective in getting driver's attention during the day... cheap strobes can be mounted without cnc'ing parts or, in my case, using a pair of worm clamps.

[Hyena]

Nice little recharge cave! You should leave a little motion sensing LED light in there
What happened in the first scene ? The hard braking blew a leak in your hydro hose ?
How would you say the new headlight compares to the P7 ?
I used to use a P7 and now have switched to a T6 which looks a tad brighter. I've been eyeing off those ones but not sure they're worth it for their extra size...
It's coming into winter now so I need it for the return commute but in your case a strobing P7 or T6 would probably be better and take up less space.

[full-throttle]

What camera mount are you using? Buckle mount?

Here's a new inspirational vid
http://www.pinkbike.com/video/252853/
Trippy

[Ypedal]

Nice little recharge cave! You should leave a little motion sensing LED light in there
What happened in the first scene ? The hard braking blew a leak in your hydro hose ?
How would you say the new headlight compares to the P7 ?
I used to use a P7 and now have switched to a T6 which looks a tad brighter. I've been eyeing off those ones but not sure they're worth it for their extra size...
It's coming into winter now so I need it for the return commute but in your case a strobing P7 or T6 would probably be better and take up less space.

I've used P7 flashlights and nothing comes close to the Cycle Lumenator !!... they are expensive but awsome flood without rings or beams..

[crusoe]

Hey GC, did you have any problems with your chainline at all with Kiwi's dropouts? What size of chainring are you running up front? What size is your bottom bracket? Specs of rear cassette? Do you have the 135mm swingarm? haha, many questions I know but I'm trying to find the best combo before I slice my swingarm in half!

I'm running:
38t 104bcd chainring up front
7 speed cassette, 11tooth is smallest cog
100mm bottom bracket

I need to fix the chain rubbing on the bottom swingarm. Here's a picture of the damage done to the lower right half of the swingarm: http://i.imgur.com/9Qjxn.jpg
About a 2-3mm deep gouge that runs about 10cm

I've just purchased a 42t ring, hoping that will lift the chain enough, but even with full suspension bottoming, the chain i think will still rub
Any help would be great!

[GCinDC]

Hey GC, did you have any problems with your chainline at all with Kiwi's dropouts?

have 7spd freewheel, can't go into bottom 11t. lowest it goes into is 12 or 13t.

What size of chainring are you running up front?

44T

What size is your bottom bracket? Do you have the 135mm swingarm?

No idea (actually probably 104) and Yes.

haha, many questions I know but I'm trying to find the best combo before I slice my swingarm in half!

i was like, what are you talking about, and then i saw the pic. that's nasty:


lookee back here. that ought to solve your probs, esp if you stay out of 11t.

[crusoe]

Thanks for the links! I'm hoping that if I move to the 42t, and get a new 13/14-whatever, cassette, instead of the 11-28 I have now, I should be ok.

Is there a way to remove the big cogs near the hub, and shift the smaller more useful cogs, to the left (if you're looking at the bike from behind the rear tire) I wonder?

[Sacman]

Is there a way to remove the big cogs near the hub, and shift the smaller more useful cogs, to the left (if you're looking at the bike from behind the rear tire) I wonder?

If you don't need the full 7-speed... you can just buy lesser speed threaded freewheels with fewer cogs (ie. 6-speed, 5-speed, 4-speed...etc.). Do a search. Only issue here is it might be difficult to find them with the small 11T cog.

[GCinDC]

Is there a way to remove the big cogs near the hub, and shift the smaller more useful cogs, to the left (if you're looking at the bike from behind the rear tire) I wonder?

pretty sure the 11t cog is smaller than the shaft there, so it's gotta overhang somewhat, but not sure by how much. docbass, is he still listening? he wizardly rebuilt one as you suggest... search time.

what front ring are you using now? i'll measure my 44T for you, which is sure to be large enough, but in the meantime, by god, please tape some plastic over that ungodly gash, for sooth.

[GCinDC]

it's only an hs3540 but i feel like i'm having a fourth child...

some deliveries are special..

just a teaser. a lot of work to do later!