An awkward question!

[Pedaldog]

Due to my declining health and a 30 year disability my cycling days are getting less and less.
I've had a couple of pedelecs, still got one. I now need to rest my legs for a minute or two when riding. I'm thinking of putting a 250W front wheel on my trike, balance issues too! The problem is leg movement, not particularly strength but neural. In 2002 I had an old TGA trike. It didn't have the pedal sensor (PAS?) so I used the motor by throttle as and when I needed.
Are there any front hub motors that I could link direct to a twistgrip throttle? I don't want to stop cycling, doing it for 55 years now, but Ia "Safe Option" for times when I want to be outside.

 

[Pedaldog]

p.s. I'd be looking for a 20" front wheel of 250Watt and 36volt.

 

[Peter.Bridge]

As far as I know "twist and go" throttles are illegal, except for when they have a limit of 6km/h or unless you register the bike with the dvla. However, I have heard people talk about throttles where you have to pedal to start the motor assist, but then you can continue using the throttle, maybe pedalling occasionally. I think @Woosh might do a 20" wheel front kit where this be done in the settings

 

[Benjahmin]

Kunteng (KT) controllers can be programmed for the throttle to act in different ways.
The legal way is as above. The throttle acts as walk assist (6kph) until the pedals are being turned, then it will give full power. The pedal rotation needs to be just that, a rotation, with no effort being put in.
It can also be progrmmed to respond as a full acting 'twist and go' throttle, so it will give power with no pedal rotation. This is not legal, however as you probably won't be hooning around snatching peoples phones and scaring old ladies whilst wearing a balaclava, it's highly unlikely that you would be pulled.
Motor, controller and all acilliaries can be bought from Topbikekit. If all bought together it will be plug and play, apart from settings alterations for throttle.
Woosh do front hub conversion kits. Worth talking to them, they are very helpful.

Woosh Bikes - Online Shop

Online shopping for electric bikes and conversion kits. All models are in stock unless otherwise indicated on the web page and can be despatched on the same day or next business day. We will email you the tracking link as soon as the item has been despatched.

wooshbikes.co.uk

Either way you will need to be handy with the spanners. Lots of help on the forum.

 

[Nealh]

One can ahave a legal throttle if the trike is SVA tested and adhere's to the EAPC directive of 250w rated hub, pedal assist fitted , max speed no more then 15.5mph.
Upon a satisfactory test one will be issued a V5 certificate, the process is a one off process.

Any twist throttle /speed switch is dictated by the controller type used and not the motor.

 

[Pedaldog]

One can ahave a legal throttle if the trike is SVA tested and adhere's to the EAPC directive of 250w rated hub, pedal assist fitted , max speed no more then 15.5mph.
Upon a satisfactory test one will be issued a V5 certificate, the process is a one off process.

Any twist throttle /speed switch is dictated by the controller type used and not the motor.

Would the EAPC require it to be registered as a motor vehicle? If I'm in the "Lost my Leg" phase of a journey I would want to be legal to ride on Cycleways, rather than reduced/limited reaction on roads, amongst other busy traffic.
I want to make the point that I only have the motor on when I need it, or set to a "Low assist" level.

 

[Benjahmin]

Would the EAPC require it to be registered as a motor vehicle?

No. It seems to be a test that requires you to have certain things. Usual eapc stuff plus, I believe a side stand, mudguard edge protectors and ball end brake levers, are part of it. At the end you get a certificate that exempts your full throttle bike from being a motor vehicle.