Search found 45 matches

by cr0m08
Jul 19 2019 5:04am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

It's probably more expensive, but the Talon HV 120 that Dave uses is a much better unit than HV80 in terms of thermal capacity, because of its bilt in BEC and greater actual mass. I believe this means that the unit has more aluminium around it and I think is better able to dissipate the heat build u...
by cr0m08
Apr 08 2019 9:09pm
Forum: E-Bike Technical
Topic: Tangent Gen 1.5 kit, Astro 3210: Usage advice please!
Replies: 10
Views: 616

Re: Tangent Gen 1.5 kit, Astro 3210: Usage advice please!

I would recommend you email Rob Metz of Zerode directly and ask him how he set it up. From reading the forum on Dave's 80:1 Tangent mid drive, I know Rob did exactly what your thinking. He set up a Gen 1 Tangent/Astro 3210 in place of the Alfine 8 and ran it as a single speeder, so he would have the...
by cr0m08
Feb 23 2019 3:32am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

Thanks amberwolf, that's the sort of thing I was thinking of, only thing that made sense to me, though I'm not that technically minded. Good to get a second opinion though before I go ordering spare sensors, and ripping apart the CA and attempting some dodgy soldering work. :oops:
Cheers.
by cr0m08
Feb 22 2019 12:32am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

Can anyone suggest what may be happening with one of my CA3-DPS? (CA3-13 full release, not the latest beta) I think it may be a faulty speed sensor but not sure. With the bike powered up on work stand, I spin the front wheel with its sensor magnet attached, the speed does sense what appears to be co...
by cr0m08
Feb 13 2019 6:50pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

Thanks Justin that does help, just downloaded the manual. The shunt I purchased but not using yet is a 100mV - 100A, so 1mOhm RShunt value, going on what you said, this should be accurate enough for an ebike. I'm using my CA3 in high range to set up to 120A or 150A limits like Dave does on his Tange...
by cr0m08
Feb 13 2019 8:13am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

ah ok cool, thanks for that calculation clarification danielrlee cheers.
by cr0m08
Feb 13 2019 7:38am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

I believe the RShunt value cannot be "calculated" but must be measured, so best is supplied by the manufacturer. The potted GrinTech shunts used on early Tangent kits where 1.0 milliohm and a 50A continuos rating. Yet the shunt I purchased has a 100A continuos rating but still with a 1.0 milliohm RS...
by cr0m08
Feb 13 2019 1:21am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

Ham, is that shunt value something you calculated or was it what the manufacturer supplied for the new shunt? I just purchased a new shunt for my next project and found that the RShunt value supplied is actually the same as the potted units supplied by Tangent (GrinTech) even though the current leve...
by cr0m08
Jan 23 2019 7:17pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

I don't know for sure, but I would think the ground connection wouldn't matter that much. Except to say that if all ground connections are common "before" the shunt (on the controller side of shunt), then the measurement of current will include all sources of power drain? So in other words, even the...
by cr0m08
Jan 15 2019 1:28am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4490
Views: 708807

Re: Cycle Analyst V3 preview and first beta release

found this on the Sabvoton controller page for shunt wiring, (and grin techs CA accessory page) hope it helps. According to the Sab pdf, blue is on battery side and white on controller side.
by cr0m08
Jan 10 2019 6:36am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

So... I finally got my two version 1.5 kits sorted and I think completed for now (Nukeproof 3220 for me, and KeeWee 3210 for my wife). Both got new wheelsets I built myself. Alas fate has been a fickle mistress with me, just as I'm about to go on a 1st ride on new wheels, I got injured again (last 1...
by cr0m08
Jan 10 2019 5:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Dave, I will look at playing a bit more with the amps, I’ve been running around 260rpm at cranks on fat 24” wheels. Already folded over cogs on the cluster when I powered on before shift completed! But I have to wait still longer yet for medical clearance before I can ride, so frustrating. It’s been...
by cr0m08
Jan 08 2019 7:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Here is the spider I spoke of. I used it with 24T on opposite side to its intended use, because the version 1.5 gearbox has drive chain on the outside rather than the inside as the spider was designed for on the first version gearboxes. Main body of spider is 6.4mm thick and the arms are 3.8mm thick...
by cr0m08
Jan 08 2019 6:04am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Just had a quick look through Dave's Tangent web site. Damn it, he's too efficient and got rid of all the older images 😝, where there was a couple pics of it with 24T. I will go through my spares box tomorrow and load up a couple shots of it for you. Its basically the same as the standard spider, ex...
by cr0m08
Jan 08 2019 4:31am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

My 24T came from Dave in one of the iterations we went through. He made a single sided spider to carry the 104 BCD chainring, and also used one of the cyclone kits 24T steel, which has the 5 holes BCD pattern of the flanged freewheels. Not sure if anyone else came up with an alternative?
by cr0m08
Jan 07 2019 7:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Hi Ace, For referance, I’m running a 3220 3 turn, 20:1 gearbox on 12S LiPo. CA set for 120A max and most I’ve pulled so far is 110A with my gearing. As you are using 40:1 gearbox, and the 3220 has loads of torque, I would suggest you run 20T on motor and 24T receiving on the crank. That will give yo...
by cr0m08
Nov 27 2018 6:53pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Cheers for the well wishes Dave 👍 It's been a bad year for me as far as injury, first shoulder injury at work, now my back 😡 but as I said, I'm lucky, back could have been sooo much worse! I didn't think I was pushing enough power through mine to do damage. I'm a good couple Kw down on your levels. ...
by cr0m08
Nov 27 2018 9:03am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Hey Dave, on the subject of the adaptors, freewheels etc. Just wondering if you have had to change the output piece to steel? (thinking of your unfortunate run at lost Sierra, you sheared off the out piece?) Or are the aluminium units holding up to the power most of the rest of us are putting throug...
by cr0m08
Nov 20 2018 11:49pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

A while ago I posted some images showing some cooling I added to the HV160 I'm running driving my 3220. Here is an update to show the smaller fins I used on my HV80 driving my 3210. With the same method, cut out the plastic bridge under the sticker on the back, and heat transfer double sided tape to...
by cr0m08
Aug 23 2018 10:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Hey Ham I'm still using my 1st gen WI on my 3220 V1.5 kit and its holding up ok as yet. But for my 3210 V1.5 I needed another freewheel so I sourced one from my LBS. And the easy one to get, was the ACS Crossfire flanged freewheel. Its only new (85kms) but the lateral wobble is not too bad, unlike t...
by cr0m08
Aug 23 2018 1:27am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Just wondering if anyone made progress with the rather expensive 200A VESC? Looked like a couple people were going to try it? http://www.fightingrobots.co.uk/threads/13621-300a-vesc-in-the-works-feature-suggestions-wanted/page19 https://vesc-project.com/node/339 Do I understand correctly that these ...
by cr0m08
Aug 17 2018 10:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

Also I would have thought the Talon's physical build would be reason for its reliability? With the 20A bec inbuilt it has more physical mass/die-cast metal body to create heatsink to start with for both ESC and BEC. So following the historical findings of hub motors, those with more mass can absorb ...
by cr0m08
Aug 17 2018 10:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

I'm not up with the tech at mo, can someone briefly lay out the difference between our CC HV units and the FOC and VESC units? Or point me to a thread that does? Don't really want to take Daves thread too far off topic.
by cr0m08
Aug 17 2018 1:29am
Forum: E-Bike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1409
Views: 186074

Re: Dave's 80:1 RC mid drive kit build log

hahaha, yeah my mount location is shitty for potential water damage, great for air flow cooling (bottom side of downtube), BUT ! My Location being Western Australia, from Perth going north and east, is in my opinion, god damn desert! Summer temp's are 38-45C most of the summer with little chance of ...