Throttle sticks open on full, flick of throttle stops it...

Hello,

Pretty much as the title suggests. When riding, sometimes the throttle stays open on full power and the Watt reading also goes to full. With a quick flick of the wrist, this is stopped, and throttle resolution returns to normal. This isn't much of a problem for me as I detect it pretty quickly and react straight away, plus even from 1000Watt motor there isn't much power and spool up time is pretty low. But I do want to get it fixed and running smoothly.

 

I believe is only happens when dropping back from full not part throttle.

 

simon

Disable cruise control in the settings or remove the jumper from the cruise connector.

Disable cruise control in the settings or remove the jumper from the cruise connector.

I was wondering if it was a cruise control. The display is SW900

Disable cruise control in the settings or remove the jumper from the cruise connector.

I've looked through the settings and couldn't find one for cruise control on the sw900 nor do I remember there being any jumper switches on the controller when I assembled it, but that I'd need to double check .

I had a thumb lever throttle that did this. Just replace the throttle.

I had a thumb lever throttle that did this. Just replace the throttle.

My Fiido has a thumb throttle that does this (deliberately)... it's in the controller programming: Whenever the throttle is held in any position for a constant 8 seconds it enters "cruise mode" at that speed.

 

Blipping the throttle or the brakes (wired with motor cut-outs) cancels it.

My Fiido has a thumb throttle that does this (deliberately)... it's in the controller programming: Whenever the throttle is held in any position for a constant 8 seconds it enters "cruise mode" at that speed.

 

Blipping the throttle or the brakes (wired with motor cut-outs) cancels it.

Hmm that's interesting. I believe it's deliberate and don't think replacing the throttle is going to solve it. On my ride tomorrow I'll try holding it for 8 seconds and see how it goes.

 

Were you able to turn it off?

Were you able to turn it off?

No. It's just how Fiido chose to implement it and IMHO it works really well. In normal Pedal Assist riding throttle use is only in short bursts here and there; you consciously need to hold the throttle at a given speed for the Cruise to engage. The bike is a normal 250w/15.5 mph geared hub e-bike, so excessive speed isn't an issue as it may be with a 1000w DD motor, especially if it's being ridden by throttle only?

I haven't fitted PAS yet, so only throttle and plenty of pedaling! But when I get the tool to remove crane arms I will fit it to give all options.

Well, after a bit of testing, also known as riding to work, I have found that holding a constant throttle at various speeds doesn't seem to trigger Cruise Control. It seems to work like CC but pretty much only at full throttle, give or take a little, and is easily stopped. But it would be nice to stop it. Maybe a different controller would solve it.

Surprised no one has the guts to tell you this is a pedelec forum , your bike is illegal .

Well, after a bit of testing, also known as riding to work, I have found that holding a constant throttle at various speeds doesn't seem to trigger Cruise Control. It seems to work like CC but pretty much only at full throttle, give or take a little, and is easily stopped. But it would be nice to stop it. Maybe a different controller would solve it.

It's virtually impossible to hold the throttle constant for 8 seconds in any position other than full throttle while riding. Make a locking device for it and try again. Did you check the connectors for a jumper?

Surprised no one has the guts to tell you this is a pedelec forum , your bike is illegal .

I'm sure plenty of people have the guts to tell me, it is quite easy after all as there is little to no confrontation in online arguing. More likely, no one cares and is more interested in helping a fellow forum member solve a query.

 

I'm off to burn my collection of C90 cassettes from the 80s charts...just in case...

It's virtually impossible to hold the throttle constant for 8 seconds in any position other than full throttle while riding. Make a locking device for it and try again. Did you check the connectors for a jumper?

Fair point, but even at full throttle it didn't seem to "lock" onto full. I'll take a look at that tomorrow. I assume the jumpers are found on the controller. I also have a spare half throttle I can try on the off chance it's that.

 

Not sure I fancy a locking device while riding on the road haha!!

It's virtually impossible to hold the throttle constant for 8 seconds in any position other than full throttle while riding.

It is perfectly possible. It's how Fiido program it on their D11 thumb throttle and I do occasionally use it. It appears not to be the OP's issue though.

Be very careful with throttles and unrestricted bikes, it is likely we will see more prosecutions occurring regarding ebikes.

One guy in Wales was fined a meagre £600 and had 6 points added to his licence recently and another in London is pending.

Be very careful with throttles and unrestricted bikes, it is likely we will see more prosecutions occurring regarding ebikes.

One guy in Wales was fined a meagre £600 and had 6 points added to his licence recently and another in London is pending.

Having come from motorbike riding of 30 years throttles are second nature and it is difficult not to treat the bike as such. But I do try to keep speeds sensible for a cycle. Out of interest is it possible to register an ebike as a motorised 2 wheeler, plates lights etc.?

https://www.hackneygazette.co.uk/news/crime/cyclist-acquitted-of-careless-driving-after-death-of-sakine-cihan-3652146

Having come from motorbike riding of 30 years throttles are second nature and it is difficult not to treat the bike as such. But I do try to keep speeds sensible for a cycle. Out of interest is it possible to register an ebike as a motorised 2 wheeler, plates lights etc.?

Yes. You register it as an S-pedelec. Your etc also includes helmet and insurance, and no bike paths, bridleways etc.

 

I'm not at all sure of the process though. Probably very easy if the manufacturer has arranged type certification. Very few have though; the market for such legal vehicles is still quite small. This is due partly to the flourishing market for illegal ones, and once approval is given this is explicit admission that the vehicle is NOT a legal regular pedelec.

 

If it still meets the other requirements (250w, 15.5mph) in can get through as a regular pedelec even with a throttle; Wisper have managed to arrange that.

I had a thumb lever throttle that did this. Just replace the throttle.

 

I had this problem with my BBS01B throttle, and I wondered whether it was because I don't use it - I had just left the connectors capped, with the caps they arrived with originally... and what I think had happened, was that moisture caused oxidisation of the pins and/or female connectors, because they don't keep moisture out as effectively as when the connectors are connected. This was confirmed after I filled the connector containing the pins with 90% isopropyl alcohol, and connected the connectors together and pulled them apart repeatdly to dissolve oxides. After allowing time for the connectors to dry out, the throttle now works as normal. I'll cover the caps with self-amalgamating rubber tape.

Edited November 16, 20223 yr by guerney