Snow Beast Refurb

General Discussion about electric bicycles.
mike_o   1 mW

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Re: Snow Beast Refurb

Post by mike_o » Dec 08 2018 9:04am

Raisedeyebrows wrote:
Jan 30 2018 12:06am
... he's definitely not motorcycle material....
hahaha :thumb:

Back to topic: I couldn't muster that kind of enthusiam for a rusty bike unless it was very, very special. And did you consider the effect of galvanic corrosion when bolting together steel and aluminum? Put those two metals together, add salt water, and the aluminum will wither away while protecting the steel.

https://en.wikipedia.org/wiki/Cathodic_protection

Ships actively use this to protect the hull etc. by placing (and frequently replacing) a lump of Zn below the waterline

markz   100 GW

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Re: Snow Beast Refurb

Post by markz » Dec 08 2018 4:39pm

DrkAngel wrote:
Dec 15 2017 9:45am
-
Whats a good psi to air down to when riding in the winter on a 26" x 2.0 tire?

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DrkAngel   100 GW

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Re: Snow Beast Refurb

Post by DrkAngel » Dec 08 2018 5:51pm

With 2" studded tires, at room temperature, I keep them near 40psi.
Which relates to, likely, < 30psi in sub freezing temps.
I do set my bike outside for several minutes to acclimatize to the cold, don't want snow to melt and freeze on rims.
But, keep my battery inside and warm, till ready to go.

Tire pressure is a tricky question!
Higher pressure gives more "bite" to each stud while lower pressure puts more studs into play.
Too soft, IMO, will allow tire to "roll", negating the bite of any number of studs.
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DrkAngel   100 GW

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Re: Snow Beast Refurb

Post by DrkAngel » Feb 03 2019 7:54am

Mid-Winter tune-up.
Had to tighten-true spokes on motor wheel, got a bit loose, but was expected as from re-spoked wheel.
Replaced motor chain with KMC "RustBuster" 410. Can build 3 x 15 Link (30T for 9-22T) chains or 1 x 15 + 3 x 13 (26T for 9-16T) chains from standard box.
Replaced brake pads with cheapest I could find but seem decent for Winter weather! ... ?
"Rubber" on alloy rims.
Blue to match bike ...
Cheap brake pads

Rather than shifting in the frozen cold, I keep in 6th, of 7, and only downshift with foot assist for difficult traverse, when stopped. New cable and noodle but old, worn out, shifter, derailleur and cable sleeves. Might, properly refurbish with cheap Shimano trigger shifter I picked up last year?
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

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DrkAngel   100 GW

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Rust Buster chain

Post by DrkAngel » Feb 21 2019 12:55pm

Got some extra 410 chain (1/2" x 1/8"), KMC "Rust Buster".
Got some cheap from China, "New other" that seems to be deeply impregnated with a thick lubricant - perfect for motor chain!
45 links, 90T is perfect for 3 x 15 links for my 9T-22T Snow Beast rig.
Made up 2x13 links & 1x14 links from left over original "new in box" Z410rb purchase.

I think it best to do chain work in quantity to maintain quality.

Z410rb.jpg
Z410rb.jpg (216.36 KiB) Viewed 136 times
For quality and durability I never use repair links!
"Proper" chain "breaking" and rebuilding is relatively simple, but is also an art requiring a bit of finesse.
.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

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pwd   100 W

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Re: Snow Beast Refurb

Post by pwd » Feb 22 2019 9:26am

That KMC "Rust Buster" chain looks interesting; that looks perfect for your application. Zinc coating I presume?
Current Build:
Rocky Mountain Element
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Old Build:
GIANT ATX 980 w/ Cycle Analyst v2.25
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DrkAngel   100 GW

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Re: Snow Beast Refurb

Post by DrkAngel » Feb 24 2019 10:24am

pwd wrote:
Feb 22 2019 9:26am
That KMC "Rust Buster" chain looks interesting; that looks perfect for your application. Zinc coating I presume?
Had a leftover link of the "New other", pulled it apart and noted a very precise black lubricant inside the collar (bearing).
Yes, it appears to be a very complete and even zinc coating. Puzzling though, no crystallization, from electroplating but too consistent and complete for dipping ... ?
Mark on rivets from chain breaking-rebuild consistent with zinc coating-plating.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - February 2019

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DrkAngel   100 GW

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Re: Snow Beast Refurb

Post by DrkAngel » Mar 09 2019 11:56am

"Rubber" brake pads worked nice ... till hit -0ºF, lost grip - required extreme pressure.
About time to retire Snow Beast, for the Spring, making a tally of what's needed for next Winter ...
New rear rim! - dropping into potholes with soft-ish tires provides a beating! (banner pothole season in Upstate NY!)
Complete cable refit. - 11 Winters of salt and snow! - All new cables, housings and noodles. Possibly new derailleur?

Estimate near 7000 miles on the old Beast, but couldn't wish for anything better on ice and moderate snow.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - February 2019

EBike Toolbox - Bargains! $

Endless Sphere Wiki - Lost?

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