Homemade Snowblower

[jebster]

Also look at your impeller design

I think a mrc diff would work fine for the gear box. I saw someone make a PTO winch out of one. How ever I think a 280 motor will be underpowered. Perhaps at 370 or maybe even a 540. How big are you thinking of making it. Also, I looked up the speeds of the impeller speeds and auger speeds. I dont remember them but it seems like a mrc diff wont slow down the auger enough

yeah, just realized the impeller is all wrong. i drew it backwards (your layout is what i need to shoot for).
for the motor i wasn't sure what would be the right size. i was even thinking a cheap 370 brushless system like those from hobbywing might do. i still need to work on the gear ratios and the rpm's the impeller and augers would turn at. that might rule out the mrc diff.

the biggest concern i have is fabricating the auger. looking at my own snow blower is it two spirals offset 180deg from each other on each side of the center diff. that could be difficult. i was looking at thin fender washers or disc shim stock at mcmaster carr that would already be the desired diameter (i'm thinking 3"). that would cut down on my work and give me clean disks to start with.

 

[MiniMorris]

I wish i could have scaled mine up. I was limited by materials and skills. Only metal I can work with is brass. I cant weld or braze.. yet.

 

[jebster]

I wish i could have made mine bigger. (Thats what she said) I was limited by materials and skills. Only metal I can work with is brass. I cant weld or braze.. yet.

i have the same concern. i can do brazing, which should help, but it is still pretty limited.

 

[hpiguy]

Now that's cool, nice job!

 

[jebster]

did a little research. seems like a common impeller-to-auger ratio that comes up is 10:1. the mrc diff has a 2.64:1 ratio. maybe that is something i can live with but i might need to do a little more searching. not sure i'll find a 10:1 diff in a small enough package. if others have recommendations i'm all ears. maybe there is a small worm gear diff out there with a better ratio? i believe the lnc/lcc axle ratio is 25:1, which might be too far on the other side.

also, for a typical home snowblower i found some typical rpm numbers: 150 rpm for the auger and 1500 for the impeller. if i use the duratrax sprockets/chain setup (26 tooth and 9 tooth, giving a ratio of 2.9) and want an impeller rpm of 1500 (ignoring the auger rpm for the moment) then i would need a motor running at 1500 x 2.9 = 4350 rpm.

 

[MiniMorris]

did a little research. seems like a common impeller-to-auger ratio that comes up is 10:1. the mrc diff has a 2.64:1 ratio. maybe that is something i can live with but i might need to do a little more searching. not sure i'll find a 10:1 diff in a small enough package. if others have recommendations i'm all ears. maybe there is a small worm gear diff out there with a better ratio? i believe the lnc/lcc axle ratio is 25:1, which might be too far on the other side.

also, for a typical home snowblower i found some typical rpm numbers: 150 rpm for the auger and 1500 for the impeller. if i use the duratrax sprockets/chain setup (26 tooth and 9 tooth, giving a ratio of 2.9) and want an impeller rpm of 1500 (ignoring the auger rpm for the moment) then i would need a motor running at 1500 x 2.9 = 4350 rpm.

I think you have a little more leniency with auger speeds than you do impeller speeds. Also, impeller tip speeds might be something to look at, not necessary..

Here is one way to run an auger..
https://www.youtube.com/watch?v=bsIfBJNUeqc

 

[evilozz]

very awsome, great build

 

[sig_p232]

Here is my video: https://www.youtube.com/watch?v=yvu8HuvSA2s

Nate

 

[JatoTheRipper]

Here is my video: https://www.youtube.com/watch?v=yvu8HuvSA2s

Nate

Wow! That thing shoots snow! :lmao:
Awesome video. I subscribed.

 

[MiniMorris]

Here is my video: https://www.youtube.com/watch?v=yvu8HuvSA2s

Nate

I saw this on scale 4x4 I bevieve? I used this as an example.

 

[Androtaz]

That's killer!!! To me one of the coolest scale builds ive seen on here.

 

[THX_138]

remote control snow blower 1 - YouTube

http://youtu.be/EN7Gp4be2tw

 

[MiniMorris]

That's killer!!! To me one of the coolest scale builds ive seen on here.

Thank you!

 

[jebster]

minimorris, could you post up some dimensions on your snowblower? width, height, diameter of the impeller tube, etc?

by the way, i may have found a gearbox that is the right size and reduction for my plans. check out Ondrives.US Miniature Gearboxes. i'm looking at the subminiture cube, PR5. it is small and comes in 6:1 and 9:1 ratios. the 9:1 would be about perfect. i have a message into the company to see what these are priced at.


UPDATE: nevermind on the gearbox. didn't notice the online order link. plugged in this gearbox and it came out at $250!!!! definitely not in my budget!

 

[MiniMorris]

minimorris, could you post up some dimensions on your snowblower? width, height, diameter of the impeller tube, etc?

Just over 6.5 wide.
3" tall at hightest part
Auger has 2" diameter
Impeller tube diameter inside is 1.5"

 

[Hirschowl]

Great build and good ingenuity! Looks really, really good!!!

 

[nigelpheron]

16 years old...I hope I'm alive long enough, to see what you make in your 40's. Keep it up!

 

[MiniMorris]

16 years old...I hope I'm alive long enough, to see what you make in your 40's. Keep it up!

Thank you, I hope to learn to braze soon, and that should open up the imagination a little more.

 

[sgtbham]

Nice job with this "thumbsup""thumbsup"

 

[rcjeepbuilder]

Well thought out and detailed build, thanks for posting videos as well!