Dom Harvey's Generosity and Talent

O Lord our God, help us to tear their soldiers to bloody shreds with our shells; help us to cover their smiling fields with the pale forms of their patriot dead; help us to drown the thunder of the guns with the shrieks of their wounded, writhing in pain; help us to lay waste their humble homes with a hurricane of fire; help us to wring the hearts of their unoffending widows with unavailing grief; help us to turn them out roofless with little children to wander unfriended the wastes of their desolated land in rags and hunger and thirst, sports of the sun flames of summer and the icy winds of winter, broken in spirit, worn with travail, imploring Thee for the refuge of the grave and denied it--for our sakes who adore Thee, Lord, blast their hopes, blight their lives, protract their bitter pilgrimage, make heavy their steps, water their way with their tears, stain the white snow with the blood of their wounded feet! We ask it, in the spirit of love, of Him Who is the Source of Love, and Who is the ever-faithful refuge and friend of all that are sore beset and seek His aid with humble and contrite hearts. Amen.
Reply With Quote




Dom made for me this incredibly perfect gear conversion
which will likely speed up my bike once I restore it to 36 or 48V.

It's an 11t gear grafted to a Unite motor's 9t gear's hub.

Seamless, perfect, hardened.

Art in welding and machining.




It arrived in Miami yesterday from AU.

Dom also sent me a book, another gift,
by an AU writer of great social insight.
I'll be talking---well thinking like a native in no time.

Dom, thank you so much
You are top drawer, and just the best, period.

Reid

Wow, I'd have thought that thing was store-bought.

He didn't polish it mirror and plate it with 24K gold, though.
Tisk tisk.

LOL :lol: but it still looks like very fine quality. It's amazing what some people can do with metal, I've seen some amazing things made from a hunk of rock that always leaves me in wonder.

Yeah, it amazes me. The picture seems to show a rough finish.
That's just the flash angle highlighting the machine fiinish.

The finish is lathe finish about identical to the OEM installed gear.
The black is chemical black identical to the OEM gear.
The hardness seems identical to the OEM gear.

I'll ask Dom sometime for the specifics of how he did this one-off job.
It's the only-such gear like it it the world, "fo sho'".

When I get new SLAs for the bike -and- have the long-awaited Drain Brain,
I'll do trials of speed / current consumption of the stock, and then the new gear.

Expecting it won't be so useful on 24V.
But for 36 and 48V operation we may get a few mph added without losing too much of the present, sufficient low end torque afforded by 24V.

In other words, if I can retain the low end feel of 24V operation, with the rpm-reduction of this gear for high speed level road cruising, great!
Looking for the best overall ratio for this single-gear bike.

If it proves too much gear for the bike,
then off it goes to the Metropolitan Museum of Modern Art,
grin!

Reid

Good to see it arrived Reid
Was going to ask if it fitted your chain -i made the width the same as the stock gear that came on the motor ,which have to be ground on the side a bit if you want a stock bike chain to fit.
Hopefully you have the heavier,wider chain.

Was made of 4140 steel -similar to the 4130 bike frame material -we use this alot at work.
Main shape was lathed -teeth/hole were done on CNC mill.
Keyway was done on lathe (job held in chuck and ground HSS cutter was held in the tool post and pushed in/out many times LOL) Slotting machine was missing the proper tool.

A guy at work operates a machine that can do the whole job in one hit -plonk the material in there -press the green button and out comes the finished product. Of course for a one-off would take him 5hrs to setup.

The black finish came from heating teeth cherry red and oil quenching.
Gold plate will cost extra haha.
Hope you enjoy the book

Cheers Dom

Ah, so even better, or I guess, more practical: all new.
High tech CNC makes one-offs "practical". Ah, the set-up and lathe work.. hours of time, many.
(This would've cost me hundreds of dollars if I'd needed to commision it on a paying basis).

And he gives to me for friendship. Plus a book. Plus postage.
Plus he wants nothing in return. Well, we'll figure that public thanks
afford a small and unequal gesture in reply;
my absolute delight over this perfect thing.

It fits singlespeed bike chain like a glove. My bike has singlespeed chain.

The greater diameter is much better mechanically for chain wrap than the 9t.

I'll have to hold off on installation until the DB arrives
--blue cases are finally on their way to Justin;
he just wrote me today to apprise me of this.

So---two weeks? I can run drain tests on the new SLA's
I'll 'em have by then. Then fit your gear and see how she goes.

Am sure that at 36V or greater this gear will relax my motor's rpms
whilst the greater-than-stock voltage will preserve sufficient low end torque.
This'll work because
a) It's flat here
b) I can pedal assist at artificial hills (bridge ramps, are all) at climbing speeds, up to 20mph.
c) The new TB post and set-back make pedaling a joy now.
d) I don't require lightning acceleration;

Jumpin' Je-hosophat! I used to drive a Model T daily by gum
Too much zip jes' plain ain't nat-ur-al,

lol.

Thanks again friend



Reid