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Search: Posts Made By: fredygump
Showing results 1 to 25 of 500
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Forum: Electric Off-Road
10-02-2018, 08:55 PM
Replies: 23
Views: 2,925
Posted By fredygump

Just to echo this point, and also to add to it a...

Just to echo this point, and also to add to it a little... We say "plastic", but that is a mistake.

High end kits are made with NYON... It is flexible and resilient, ideal for soaking up abuse....
Forum: Electric Off-Road
09-12-2018, 08:54 PM
Replies: 36
Views: 2,805
Posted By fredygump

I'm surprised nobody posted this video. This is...

I'm surprised nobody posted this video. This is Ryan Lutz playing with the MT410, doing backflips on a race track while running some practice laps. And he goes for a front flip at one point, but...
Forum: Electric Off-Road
09-06-2018, 02:56 AM
Replies: 18
Views: 4,914
Posted By fredygump

Yes, I agree! I made a fairly elaborate set-up...

Yes, I agree! I made a fairly elaborate set-up to ensure a flat and level surface. It is 1.5" mdf board with leveling screws in the corners. Something like this is necessary to get accurate and...
Forum: Electric Off-Road
09-03-2018, 03:09 PM
Replies: 18
Views: 4,914
Posted By fredygump

I use postal scales, because they use load cells...

I use postal scales, because they use load cells and are designed to accurate...enough for accurate postage atleast. Corner balancing, if you take it that far, is awful fiddly in the best of times,...
Forum: Electric Off-Road
08-31-2018, 05:07 PM
Replies: 9
Views: 867
Posted By fredygump

Can you describe the jump more? How big, how...

Can you describe the jump more? How big, how steep, and how long is the jump face? How 'bout a picture?????

It could be aero, but it could also be suspension imbalance. Or it could be chassis...
Forum: Electric Off-Road
08-23-2018, 12:21 AM
Replies: 15
Views: 2,119
Posted By fredygump

Yeah, the VRP seems to be a good option. I have...

Yeah, the VRP seems to be a good option. I have used Fioroni pistons, but they are for 1/8 scale. I'm not sure if they make a piston that would fit your vehicle.

The dual rate pistons I have...
Forum: Electric Off-Road
08-22-2018, 12:14 PM
Replies: 15
Views: 2,119
Posted By fredygump

Another option is experimenting with a dual rate...

Another option is experimenting with a dual rate pistons? It is possible that you have enough droop, but rebound might be slow. If this is true, then adding more droop will not fix anything.
Forum: Electric Off-Road
08-21-2018, 10:06 PM
Replies: 15
Views: 2,119
Posted By fredygump

The change in effective spring rate will be...

The change in effective spring rate will be fairly subtle. You probably won't notice any difference.

Why do you need more droop? Excess droop can lead to handling problems.
Forum: Electric Off-Road
08-16-2018, 11:10 PM
Replies: 10
Views: 1,678
Posted By fredygump

buy some wire, connectors, crip tool...make your...

buy some wire, connectors, crip tool...make your own! It isn't hard. Look for wire and connectors on digikey or similar, and crimpers on amazon.
Forum: Electric Off-Road
08-05-2018, 02:48 PM
Replies: 8
Views: 1,062
Posted By fredygump

Just spray it with weed killer ever couple of...

Just spray it with weed killer ever couple of weeks. Home depot sells a giant jug of concentrated weed killer that will last a couple years if you're just keeping a track clear.
...
Forum: Electric Off-Road
08-04-2018, 04:10 PM
Replies: 3
Views: 550
Posted By fredygump

It isn't going to somehow spoil or go bad over...

It isn't going to somehow spoil or go bad over time.

However, a lot of things can change over time when comparing old oil and new oil. The old oil could have been made by a different company...
Forum: Electric Off-Road
07-19-2018, 11:21 PM
Replies: 68
Views: 7,965
Posted By fredygump

I tore apart a couple bad LiPos this spring, and...

I tore apart a couple bad LiPos this spring, and I was surprised to find that sand/ small rocks inside the hard case. They were cutting into the outer foil wrapper around the cells themselves, but...
Forum: Electric Off-Road
06-20-2018, 01:25 AM
Replies: 443
Views: 199,000
Posted By fredygump

Tuning will always be required to get maximum...

Tuning will always be required to get maximum performance for you, on your track. But don't tune anything until you know what you're changing it and why you're changing it! Copying a set-up that was...
Forum: Radio and Electronics
06-11-2018, 11:21 AM
Replies: 91
Views: 14,357
Posted By fredygump

I don't like appliances that try to talk to me. ...

I don't like appliances that try to talk to me. Even on a GPS, the first thing I do is disable the spoken directions. I wonder if there is a setting to disable the voice and get beeps instead? I'd...
Forum: Electric Off-Road
06-09-2018, 04:49 PM
Replies: 1
Views: 607
Posted By fredygump

So....what are you actually doing? Are you...

So....what are you actually doing?

Are you confusing a kit and an RTR? Kits require that you assemble them, and RTRs come already assembled.... If you just want to install an Arduino, why...
Forum: Radio and Electronics
06-06-2018, 05:45 PM
Replies: 91
Views: 14,357
Posted By fredygump

I just got a reply from Revolectrix. They say...

I just got a reply from Revolectrix. They say that all of their chargers have a 1.0A balance drain. That puts them right up there with iCharger, which claims 1.2A. (As far as I can tell, all the...
Forum: Radio and Electronics
06-04-2018, 08:27 PM
Replies: 91
Views: 14,357
Posted By fredygump

I call BS. A 17.5T will not pull 100A....not in...

I call BS. A 17.5T will not pull 100A....not in a 2wd buggy...not on a race track. Even at a dead stall, with wires smoking, I don't believe a 17.5T will pull 100A. Once the laquer is burnt off...
Forum: Radio and Electronics
06-04-2018, 05:50 AM
Replies: 91
Views: 14,357
Posted By fredygump

It isn't relevant to me either, but it is about...

It isn't relevant to me either, but it is about voltage. It is minimizing voltage drop under load. Between two equal cars, the one that maintains higher voltage will be faster. Because motor KV. ...
Forum: Electric Off-Road
06-02-2018, 02:19 PM
Replies: 2
Views: 556
Posted By fredygump

I don't know where you've looked, but there are...

I don't know where you've looked, but there are websites that specialize in selling virtually any size and shape spring you can imagine. They aren't hobby websites, FYI. There are some options from...
Forum: Electric Off-Road
06-02-2018, 10:29 AM
Replies: 5
Views: 561
Posted By fredygump

I like AKA for their foams. Proline foam doesn't...

I like AKA for their foams. Proline foam doesn't seem to hold up in my experience. Maybe it is great when you wear your tires quickly? But my tires last a long time, so I prefer that my foams also...
Forum: Radio and Electronics
06-01-2018, 05:39 PM
Replies: 3,885
Views: 645,443
Posted By fredygump

New rotors I ordered have a stainless steel band...

New rotors I ordered have a stainless steel band around the back of the rotor, so looks like this type of failure has been addressed.
Forum: Radio and Electronics
06-01-2018, 05:33 PM
Replies: 91
Views: 14,357
Posted By fredygump

I believe the reason for charging NiCads at high...

I believe the reason for charging NiCads at high amperage is to prevent the memory effect. The "memory" is due to the battery shorting itself out internally (something like tin whiskers, as I...
Forum: Radio and Electronics
06-01-2018, 05:11 PM
Replies: 91
Views: 14,357
Posted By fredygump

That's cool. Apparently they really thought...

That's cool. Apparently they really thought things through! This is the kind of stuff I was hoping to find out. I didn't expect that this would be possible.

Is this exclusive to the icharger?...
Forum: Electric Off-Road
05-31-2018, 11:32 PM
Replies: 6
Views: 3,646
Posted By fredygump

Hey, so....like everything in racing, everything...

Hey, so....like everything in racing, everything is legal until someone makes a rule against it. Or in actuality, until people start enforcing the rule.

I'm pretty sure that sanctioned events...
Forum: Radio and Electronics
05-31-2018, 11:17 PM
Replies: 91
Views: 14,357
Posted By fredygump

I'm learning that there is a lot of complexity to...

I'm learning that there is a lot of complexity to battery performance and battery management when you start getting into the nitty gritty details.

My comments about the lower IR due to charging at...
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