New thumb throttle..............

[oatnet]

old_thread.jpg (56.29 KiB) Viewed 307 times

I'd like to buy one of these - Matt can you confirm shipping to the UK?

A 2+ year old GraveDig, very bold. I forgot about these, what-the-heck Matt if you have any left and can still find them after all this time, I'll buy one too.

-JD

[recumpence]

I went to the shop and dug up 3 of these thumb throttle tabs. It is just the plastic thumb tab. You will need to remove the grip and shorten the twist tube. Then you will need to put a dab of super glue on the tube and press the thumb tad on.

$10 each plus shipping. Odds are oversees shipping is going to be $15 even for such a small item.

Matt

[lostrack]

I'll take two:)

For a nice wide thumb grip.

Thought they were black anodised aluminium at first. At least I know they're up to standard Shumaker quality.

Tom

[gblast123]

The problem with this, and other thumb throttles, is that there is no
"safety" lock which prevents them from accidentally being depressed
you are trying to park the bike or getting into an elevator, etc.

Your design, while convenient, just makes the problem worse, as it sticks
out farther!!..

Would it be possible to put in some sort of "lock" or "safety" latch to
prevent this problem?

[amberwolf]

Isn't that what a main power switch or keyswitch is for?

[gblast123]

Isn't that what a main power switch or keyswitch is for?

A key switch? on a DIY bike ? I can't afford an A2B.. and most bikes sold in cheapo kits, like mine, had no separate power
switch on the controller.

But some sort of safety interlock, to prevent the throttle from engaging when you are moving the bike around by hand
shouldn't be that difficult... but I haven't seen it.

This thumb throttle is very nice, and is well built and looks real nice.. but it has the same problem that all the
other thumb throttle's have.

[sico]

I highly recomend a power switch for the controller on your handlebars. Loose conection in the throttle wiring often results in WOT and sporadic behaviour.

Not saying a throttle safety lock isn't worth pursuing if it suits you though.

[gblast123]

I highly recomend a power switch for the controller on your handlebars. Loose conection in the throttle wiring often results in WOT and sporadic behaviour.

Not saying a throttle safety lock isn't worth pursuing if it suits you though.

Actually, that is another thing that is a frequent source of chagrin, rain on the throttle, causing a short!!!

A lot of the fast food places that use e-bikes put a plastic bag over the throttle!!... good idea in my book!!

[amberwolf]

A key switch? on a DIY bike ? I can't afford an A2B.. and most bikes sold in cheapo kits, like mine, had no separate power switch on the controller.

On CrazyBike2, I just used an old keyswitch I found in a junk box, originally from a Briggs&Stratton something-or-other according to the key, so it cost me nothing. I wired it up to the "ignition" wire on the controller (the thin red power wire, rather than the main power wire). Then I installed the switch into my hollow steerer tube on the handlebars, using foam tape around the switch to hold it in place.

On DayGlo Avenger, I used a cheap Chinese keyswitch donated to me, and I wired it directly in series with the actual power to the Lyen 6FET controller. The switch is probably a $10 item at most, and isn't very great quality, but it hasn't failed yet, despite the loads I am putting thru it, up to 30A or higher momentary peaks and 4-8A constant. I would actually recommend only using it like I did the one above, to cut the "ignition" wire.


You could even use the keyswitch off of an old computer case--lots of "generic" computers used to have a keyswitch with electrical contacts built in, that can easily be removed from the case an mounted on the bike. A portion of the casing can be cut off around the siwtch, and used to make the mounting plate, if necessary. Even nowadays some computer stores still sell separate keyswitches to add on, and some cases sold by Antec and the like also have them installed, but there are so many old computers laying around as trash that it's easy to find one that has the switch...harder to find one with the keys still with it, though, unless they were left inside or as many old Compaqs came--with the key on a ring on the fan exhaust grille.

[gblast123]

I see.. dig through a junk yard to find a keyswitch... cut off some loose wire, attach these wires to the controller wires..

Where to mount the keyswitch/control switch.. no problem.. just let it dangle in the wind..

Oh, find a key? Easy...

But I fear that we are polluting this thread excessively.. I will start a new thread on throttles and cut-ff switches.