bigbadal

Hi John, I've tried that - not sure how successful it will be. The bike will be getting used again tomorrow so I will see how it does and report back in. I used superglue, not sure of its suitability on this material.

Wingreen, I have only just seen this post from you. Yes it does look like another viable option. thanks for the info.

Just wanted to update info on these tyres. The bike has now covered 1400 miles since these were fitted and obviously the weekly punctures are a thing of the past. I've pulled large shards out of these tyres so they are doing what I wanted - enabling my son to complete his 22 mile daily round trip without interruption. I've had to repair the battery pack twice in that time - but a failed battery doesn't stop him getting from A to B in a reasonable time. The rear tannus tyre if you remember is fitted to a rim not supported by Tannus and so I had to make fixing pins. These seem to be holding up well although I am aware they may not last long term as they arent flexible like the tannus ones. The tread is still good although they do seem to skid more easily that pneumatic tyres. All in all they look like they will be good for another 1400 miles. One problem I have noticed today is that the rear tyre is developing a split - possibly where one of the large shards of glass has been. I will be checking this daily now as I fear it may not take too much more daily punishment but I will soon now how that is holding out. So all in all, so far so good.... On another note I came across Green Tyres who seem to be selling a very similar product in the UK. I am puzzled about Green Tyres fitment though as the the fitting video shows a tyre with gaps for pins, but no mention of pins. I am trying to contact them to get pricing and more info. I wonder if anyone else has come across their product or used it?

Ok - thanks Neal. I've had a reply back from cyclotricity asking for output readings with the battery fully charged when switched on and switched off. I am not sure what use that info is - switched off reads zero as you'd expect. Switched on was showing 31.3. Any way, I decided to open the bottle up - there is a tech FAQ on here posted by D8veh that gives great info how to get into the unit, so having got the batterys out I was able to do some testing and ultimately traced the fault back to this.. (see pic) The main black wire going down to the connection pins had broken at the joint on the top end of the battery. It was hidden by the black wire next to it. So that is now soldered back in place and the bottle is reassembled and back on the bike. All tested good and ready for another weekly commute of 130 miles. I'll let cyclotricity know. The sheer demand of the commute the bike is doing has obviously made the joint give up, I hope my soldering is good enough to hold it in place - only time will tell. Anyway - just wanted to say thanks to D8veh for the bottle battery strip down post. I couldn't have taken the battery pack out of the case without it.

Yesterday I lost output from my 9ah bottle battery. If I take the bottle off the bike and turn it upside down ( as I did to test the output) I get volts. As soon as it is turn up the right way I lose all output. You can "feel" something move. So I have contacted Cyclotricity and will see what they say. Bike is just under the 1 year warranty period. I'll let you know how I get on with cyclotricity. Meanwhile does anyone know the likely problem. Also I would be Kean to replace this style of battery with one that clips into place but doesn't need the power feed from the controller to be inserted and screwed up ech time the battery bottle is removed, ie a battery that has the connection cable "hardwired" into its holder.

Update - Bike is off the road ATM. No issues with the tyres, but my battery pack has given up. Turn it upside down and it works. Turn it up the right way and it doesn't output any volts. Sounds like something is loose inside. Have e-mailed cyclotricity to see if its repairable......

Well at the risk of being ridiculed.... I used a strip of aluminium from B&q, used tin snips to cut to an approx size of 28mm length then used a hand crank grinding wheel to round off the edges and reduce to 27.5mm. 36 custom made clips. Fitted using the standard Tannus tool which allows you to either lever the clip into place or bang it into place. I know this is not ideal, but the bike has now done 330 miles and is looking fine. I wanted to get half round section nylon rod to make these and still will probably, but Tannus didn't reply to my question about what their clips are made of and I needed to get the bike on the road immediately. It is being used by my older son on a daily bases and he cannot afford to be without it. The aluminium clips are flexible enough to fit the tyre to the rim without damage. Ive get to try and get one out and only time will tell if they remain in place or gradually will get bent out of shape and fail.

My bike is the 500w version and whilst I use it routinely fully restricted and road legal, I have used it unrestricted again with no issues. However I have not used it unrestricted for any length of time so it is a bit of an unknown. Fair to say that for a 250w configuration, I can see no issues and I have fitted this tyre to a wider than recommended rim, using custom made clips, totally against the advice from Tannus.

OK - yes that is a good point although I've not experienced this. The fit is very tight, but with the high torque i guess that is possible, although unlikely. Thanks for the info.

I don't understand how they can't take the power of a 250w motor... How would that problem manifest - any one know?

Yes you can remove, but would just need to buy a bag of new pins as they would likely be damaged during removal. The pins are only a couple of £s.

Just to add that I use the bike unpowered at the weekends for a short local ride with my 8 yr old and they roll just fine. Longevity is the only thing I can't advise on. I will update when they have more miles on them...

Yamdude - same reasons I switched. They are great. My son is doing 22mile round trip each day and cannot afford to get flats. After the initial change of feeling from not very well pumped up tyres and tube's you forget they are on. If you Google Tannus tyre reviews there is very little not to like apart from the initial cost. Delivery was about a week from ordering...

Have fitted a pair to cyclotricity revolver. Very reassuring. Definitely a harder ride. Fitting requires a bit of muscle, but is perfectly doable. Main problem on my rear wheel is that the internal rim width is beyond the scope of Tannus supplied plastic pins. So I had to make 36 custom size. So its been two weeks and so far so good.... Pricey at £59 each (26" wheels), but having had multiple punctures and replaced tyres, tubes, fitted liners etc I have prob almost spent the same amount already, only to still get flats.! Great idea from Tannus.

thanks for that info - I had given up searching and so ended up just replacing the bearings. It's good to see there is a BB that would probably fit my old bike. thanks for that d8veh