Welcome Guest [Log In] [Register]
Welcome to Rcsnowcats. We hope you enjoy your visit.

Join our community

Username:   Password:
Add Reply
Turbo Blizzard DF300 EP
Topic Started: Sep 29 2010, 08:36 PM (3,143 Views)
SMOKE-DOG
Member Avatar

Tower has these Robinson Racing gears in every size so the gearing possibilities are endless.

I was wondering about gear ratios... an 86t spur and a 21t pinion make a 4.09:1 gear ratio. Now a 90t spur and 22t pinion are also at 4.09:1. What's the difference if they both have the same ratio? Would there be any difference in speed, torque, or batt life with the larger set of gears vs. the smaller even though they have the same ratio?
Offline Profile Quote Post Profile
 
Cadimman

I would guess no difference in performance AT ALL. But clearance may become and issue with a smaller spur gear as your motor gets lower...

With my Traxxas Velineon I clearanced the diff as it is a long can. Since I changed from a 18T to a 22T, I have alot more room.
Offline Profile Quote Post Profile
 
4mods
Member Avatar
rc addict
Check your esc and battery temps, thats the main thing with gearing. I find the stock gearing works best for almost every application, BUT this is great to change them and have some options to play with.
Offline Profile Quote Post Profile
 
Nouseforaname
Member Avatar

SMOKE-DOG
Dec 19 2010, 12:32 PM
Tower has these Robinson Racing gears in every size so the gearing possibilities are endless.

I was wondering about gear ratios... an 86t spur and a 21t pinion make a 4.09:1 gear ratio. Now a 90t spur and 22t pinion are also at 4.09:1. What's the difference if they both have the same ratio? Would there be any difference in speed, torque, or batt life with the larger set of gears vs. the smaller even though they have the same ratio?
Its better to have a larger pinion/spur combo if space permits,
will have more teeth in contact between the spur & pinion, which will be stronger and smoother.
Offline Profile Quote Post Profile
 
SMOKE-DOG
Member Avatar

Had the Blizzard out again today. I ended up changing the 20t pinion to a 23t and got a little more speed.

Posted Image

Got it up on 1 track!

Posted Image

Donuts!

Posted Image

Posted Image

Pullin' hard

Posted Image

Still more work to do. I thought about doing a brake upgrade but I dont think it needs it. I will probably add spring seperators but that's about it. This thing handles perfectly.
Offline Profile Quote Post Profile
 
SMOKE-DOG
Member Avatar

Did a little brake mod today. The stock brakes move on a 3mm threaded screw. Not sure why Kyosho didn't think to machine a flat spot in the middle of the screw to allow the brakes to move freely as to not get caught up on the threads but I did. I dont have a lathe so I threw them in my drill press and took a file to them and finished off with some gritty sandpaper.

Posted Image

Posted Image

I then added some Ofna spring separators to allow the disk to move freely. I noticed that even without the brakes on, they would rub the disk while running.

Posted Image

Posted Image

The brakes now move freely and after making a few more steering adjustments I now have even better control than I had before. Brakes dont go to full lock until I turn the wheel to full lock and I have plenty of brake feel in between.
Offline Profile Quote Post Profile
 
phatchantz
Member Avatar
seƱor member
nice ! - great idea ( gotta mod mine again :D ) - thanks for the pics too !
Offline Profile Quote Post Profile
 
4mods
Member Avatar
rc addict
Yeah, great thinking the pictures look great.
Offline Profile Quote Post Profile
 
SMOKE-DOG
Member Avatar

After only about 5-6 runs, I noticed some corrosion on my brake parts and chains. Guess I need to thoroughly dry it out after each run and not just let it sit in the tub.

Posted Image

Posted Image

My brake mod was a failure. The screws I filed down to allow the brakes to move smoothly have started to rust making the parts stick and unable to move freely.

Posted Image

To fix this, I'm going to use Titanium screws in hopes they wont corrode. I also ordered some new springs and some adhesive brake pad material for brake mod v.2. For now, I used some gun lubricating oil to clean up the parts. It claims that it penitrates the metal and helps prevent rust. It did clean the parts so I'll run with it.

I also noticed that the wheels dont spin freely. There is a small piece of plastic that rubs the inside of the rims so I broke out the Dremmel and took about 60 seconds and filed down the plastic behind all the wheels so now my wheels spin smoothly.

Posted Image

Offline Profile Quote Post Profile
 
rc everywhere
Member Avatar

nice pictures, love the action! i almost can hear the sounds, even from the still shots!
i had a bit of a picture bug last year, have you seen "snow time" in the pictures section
i just have sauch a blast with my blizzard.

i hope we get alot more snow, still using my trucks in the snow
Offline Profile Quote Post Profile
 
4mods
Member Avatar
rc addict
Thanks for the update, that sucks about your screw mod but thats what this hobby is all about. Test, trial.... work or fail its fun to experiement.

I always stick my blizzard on the passenger side floor and blast the heat to dry off my blizz coming back to the city after use and don't find tons of rust normally. So your right, just dry it off a bit and that should help.
Offline Profile Quote Post Profile
 
Blissard
Member Avatar

Thanks for posting. Is free wheel spin good ?
What kind of Dremel bit is that :) I have not seen one like this before.
Offline Profile Quote Post Profile
 
SMOKE-DOG
Member Avatar

ScaleXtreme
Jan 13 2011, 04:34 PM
Thanks for posting. Is free wheel spin good ?
What kind of Dremel bit is that :) I have not seen one like this before.
I can't remember what it's called. Small plastic cut wheel or something. Funny thing is, on the package, there is a picture of it cutting out the lights of an RC truck.
Offline Profile Quote Post Profile
 
Cadimman

I did the same thing to make my wheels spin freely.
Offline Profile Quote Post Profile
 
SMOKE-DOG
Member Avatar

Anybody seen one of these? It's the Steel Differential Gear Set Kyosho part #FZW18
It's actually listed as an optional part in the Blizzard Manual. I think it's originally for the FW03 chassis or something. Anyway, I want one for my Blizzard. I might be going with a mild brushless setup many months from now when winter hits.
Attached to this post:
Attachments: FZW18.jpg (16.02 KB)
Offline Profile Quote Post Profile
 
1 user reading this topic (1 Guest and 0 Anonymous)
Go to Next Page
« Previous Topic · Blizzard EV & DF-300 EP · Next Topic »
Add Reply