Sara_H
Guru
Yaaaaaay! You're out and about! Fantastic!
eBay recumbent trike: thoughts needed please
- Thread starter SatNavSaysStraightOn
- Start date
Page may contain affiliate links. Please see terms for details.
Yaaaaaay! You're out and about! Fantastic!
cyberknight
As long as I breathe, I attack.
- Location
- Land of confusion
Wouldnt a chain tensionr they use on a single speed work better , unless im missing something its only acting as a chain tensioner?
Pale Rider
Legendary Member
SatNav is looking to take up the tension/slack from different sized front chain rings, so a tensioner would need some spring in it, rather than being set.
A derailleur ought to work but doesn't.
My guess is the chain line is so long, the weight of the chain to be tensioned is too much for a standard derailleur spring.
OP
OP
SatNavSaysStraightOn
Changed hemispheres!
- Location
- ɐᴉlɐɹʇsn∀ 'ɐɹɹǝquɐƆ
I've just spoken with Kevin and he is sending me a long reach derailuer with a good strong spring in it and a lightly used 2nd hand rohloff chain tensioner out on Monday in the same parcel as some bits he forgot to put on the trike on Wednesday, for us to try out. Given I am spinning out on the 34t middle chainring on a very slight downhill incline, he is keen to get the outer chainring up and running and believes that the long reach derailuer should work if the Rohloff one does not. It looks like it is simply a case of the current derailuer not managing to pull in the chain slack caused by dropping onto the inner chainring.
Pale Rider
Legendary Member
@Yellow Saddle is our resident chain expert, so he may have a view on the skipping problem.
cyberknight
As long as I breathe, I attack.
- Location
- Land of confusion
fair enough
cyberknight
As long as I breathe, I attack.
- Location
- Land of confusion
So , a long cage MTB mech would be the way to go ?
I am midlyt interested myself for future reference in case i ever go the same route ( bike wise )
I am midlyt interested myself for future reference in case i ever go the same route ( bike wise )
OP
OP
SatNavSaysStraightOn
Changed hemispheres!
- Location
- ɐᴉlɐɹʇsn∀ 'ɐɹɹǝquɐƆ
hopefully because they can take up more slack chain that a short or medium length cage, but you need a strong string to deal with the weight of the chains. there are 3 joined together here.
In the meantime, have you tried this? ^ It will add more tension. May not work but you won't get the gear until Monday earliest.
mrandmrspoves
Middle aged bald git.
- Location
- Narfuk
On my old Trice, I fitted a derailleur tensioner to assist in pulling the derailleur back. I am not sure if this is an obsolete item as I got it off eBay and then upgraded the spring to it. I needed this as the existing derailleur simply wasn't strong enough to cope with the extra chain weight. It worked really well......and I bought a spare at the same time - so if your other solutions don't work for you SNSO, drop me a.mail and I will post it out to you. It is only a tiny part, easy to fit, and works.
OP
OP
SatNavSaysStraightOn
Changed hemispheres!
- Location
- ɐᴉlɐɹʇsn∀ 'ɐɹɹǝquɐƆ
I won't be able to get back out to the bike until tomorrow... I'm very limited as to what I can actually do and how many times I can go up and down the stairs. Neither my right leg nor my back can manage it and I am on my own again so can't risk falling... it will have to be a pre-ride job tomorrow if I am able to manage it.
My OH is not that technical and something like the B screw just does not exist for him!
Ahh, I thought he was there at your beck and call today, ready to be summoned to your every whim as supplied by random strangers on the internet. I realize you can't nip in and out.
mrandmrspoves
Middle aged bald git.
- Location
- Narfuk
Tigerbiten
Guru
How badly is the chain jumping ??
My first new chain ran fine on the new 21 tooth sprocket. It did around 7.5k miles in a year
My second new chain jumped slightly at the start but soon bedded in and stopped jumping after a couple of hundred miles. It did 8k miles in a year.
My third chain jumped badly and was basically unusable until I reversed the sprocket. Now it's running fine. I'm hoping for another 8k miles out of it and that I'll be able to run a fourth chain before replacing the sprocket.
My first new chain ran fine on the new 21 tooth sprocket. It did around 7.5k miles in a year
My second new chain jumped slightly at the start but soon bedded in and stopped jumping after a couple of hundred miles. It did 8k miles in a year.
My third chain jumped badly and was basically unusable until I reversed the sprocket. Now it's running fine. I'm hoping for another 8k miles out of it and that I'll be able to run a fourth chain before replacing the sprocket.
