Tifosi cassettes?

[UpWrong]

Fitted the 9 speed 11-34T Tifosi cassette today, replacing a SRAM PG-980. I tested it on the workstand then did a 10 mile ride. I couldn't fault the shifting and the ratios felt less gappy. The first gear is a bit of an underdrive, which I like, and I treat the top as an overdrive for downhill speeding.

[De Sisti]

Fitted the 9 speed 11-34T Tifosi cassette today, replacing a SRAM PG-980. I tested it on the workstand then did a 10 mile ride. I couldn't fault the shifting and the ratios felt less gappy. The first gear is a bit of an underdrive, which I like, and I treat the top as an overdrive for downhill speeding.

Double or triple set-up?

[PH]

These are currently on offer from Rutland at £12.09, I think postage is £3, I collect from the Leicester branch.
https://www.rutlandcycling.com/parts/ge ... F709A.html

[UpWrong]

Fitted the 9 speed 11-34T Tifosi cassette today, replacing a SRAM PG-980. I tested it on the workstand then did a 10 mile ride. I couldn't fault the shifting and the ratios felt less gappy. The first gear is a bit of an underdrive, which I like, and I treat the top as an overdrive for downhill speeding.

Double or triple set-up?

A triple, 26-34-44 rings with 150mm cranks . SRAM X9 RD with X7 grip shifter.

[Sweep]

Fitted but ridden 50 miles only. A freshly waxed new chain runs nice and quietly, so out of the box I have no issues - unlike some chinesium bits I've had.

I wouldn't expect Spa to stock rubbish.

Any update Wirral?
I ask as have seen some poor reviews of another tifosi cassette, but wasn't ,9speed, fair bit higher.

[wirral_cyclist]

Fitted but ridden 50 miles only. A freshly waxed new chain runs nice and quietly, so out of the box I have no issues - unlike some chinesium bits I've had.

I wouldn't expect Spa to stock rubbish.

Any update Wirral?
I ask as have seen some poor reviews of another tifosi cassette, but wasn't ,9speed, fair bit higher.

Haven't got exact figures in front of me but probably 3-4K miles on it now (early or late August can't recall, and what mileage if any was on the spare bike). Gears still change fine, and no noise yet, but cassette is still on the same (waxed) chain pair so might be wearing with those chains but both those chains were still below .5% on the drop in checker, my next but one chain swap is a steel rule chain check (+ cassette check) but I suspect no great wear yet.

I was apparently hard on chains/cassette (1500m chains, 3per cassette) previously, but so far waxing is much better than oiling - or so it appears (but waxing a faff, but 3x or 4x chains would easily negate extra time heating waxing faff).

[UpWrong]

I bought 3 of the 9 speed 11-34 Tifosi cassettes and I have been using one for a while on a P-38 recumbent with an SRAM X-9 RD and KMC chain. It changes gear when wheeling the bike backwards but is fine in normal use. I've tried to use the same on a hybrid conversion, also X-9 RD and new KMC chain, and it clunked when pedalling forwards though was fine when pedalling backwards. The crankset is a Shimano 9-speed M590 triple set up as a super compact double with 22/36 rings. It clunked in both rings. I was installing the RD in top gear without cabling it up.

So I have installed an SRAM PG-980 cassette and all is good. I can only assume the teeth profiling of the Tifosi 11 tooth cog is off.

EDIT: I expect the 17-20 gap in the SRAM cassette is really going to annoy me!

[Sweep]

I bought 3 of the 9 speed 11-34 Tifosi cassettes and I have been using one for a while on a P-38 recumbent with an SRAM X-9 RD and KMC chain. It changes gear when wheeling the bike backwards but is fine in normal use. I've tried to use the same on a hybrid conversion, also X-9 RD and new KMC chain, and it clunked when pedalling forwards though was fine when pedalling backwards. The crankset is a Shimano 9-speed M590 triple set up as a super compact double with 22/36 rings. It clunked in both rings. I was installing the RD in top gear without cabling it up.

So I have installed an SRAM PG-980 cassette and all is good. I can only assume the teeth profiling of the Tifosi 11 tooth cog is off.

EDIT: I expect the 17-20 gap in the SRAM cassette is really going to annoy me!

When you say "clunked", do you just mean on the gear change but ran OK once in the new gear?
If so I can live with that - I quite like a clunk when changing

[UpWrong]

Unfortunately not. It was clunking whilst pedalling and as far as I could determine it was nothing to do with the cranks or the chain. It was rattling continuously and clunking frequently.

[UpWrong]

I ought to return it for a refund but I expect I shall try it on another bike at some point. I also have a third to consider what to do with.

[Brucey]

firstly you may need to adjust your indexing when changing cassette brands especially, because the error will be a cumulative one eg. if the new cassette is just 0.05mm different pitch this could result in a cumulative error of about 0.5mm. If the old cassette had plastic spacers, these can move over time anyway.

second if the back-pedal shift is always off the 11T and onto the 13T sprocket it may just indicate that the 11T is too close to the 13T sprocket, which is easily fixed using a thin shim, without upsetting the indexing unduly.

Either way you might be able to fix it, and your spacers may be at fault here; most folk find it very difficult to even measure them with sufficient accuracy.

[TrevA]

I’ve been using Tifosi 9 speed cassettes for the last couple of years. I don’t notice any difference in shifting, but I think they are not as hard wearing as Shimano. I changed my chain at the start of winter, it was less than 0.75% worn, but the new chain was jumping on a couple of sprockets (probably the most used ones), so ended up having to change the cassette too which cured the problem. I’m not too disappointed about this as the Tifosi cassette is less than half the price of the equivalent Shimano one.

[UpWrong]

firstly you may need to adjust your indexing when changing cassette brands especially, because the error will be a cumulative one eg. if the new cassette is just 0.05mm different pitch this could result in a cumulative error of about 0.5mm. If the old cassette had plastic spacers, these can move over time anyway.

second if the back-pedal shift is always off the 11T and onto the 13T sprocket it may just indicate that the 11T is too close to the 13T sprocket, which is easily fixed using a thin shim, without upsetting the indexing unduly.

Either way you might be able to fix it, and your spacers may be at fault here; most folk find it very difficult to even measure them with sufficient accuracy.

The Tifosi cassette on the recumbent shifts fine, but the chain climbs the cassette when wheeling the bike backwards. Someone else on this thread posted experiencing the same issue on their tandem.

I'm converting the upright hybrid from a 1x7 to a 2x9. It was another Tifosi cassette which rattled and clunked when pedalling with the bike upside down. The clunking was frequent but seemingly random with respect to the chain and cranks. Newly fitted cassette, chain, shifter and RD but all 9 speed and either new or little used.The shifter wasn't in fact connected, I was just pedalling in top with the cable disconnected. The rattling and clunking vanished upon swapping in the SRAM PG-980 cassette, all else the same.

EDIT: I might explore a thin shim between the 2 smallest cogs as you suggest. Guess I ought to also try it cabled up to see if it behaves in the other cogs. Come to think of it, I could try the 8th and 9th cogs from the third Tifosi cassette I have.

[yostumpy]

firstly you may need to adjust your indexing when changing cassette brands especially, because the error will be a cumulative one eg. if the new cassette is just 0.05mm different pitch this could result in a cumulative error of about 0.5mm. If the old cassette had plastic spacers, these can move over time anyway.

second if the back-pedal shift is always off the 11T and onto the 13T sprocket it may just indicate that the 11T is too close to the 13T sprocket, which is easily fixed using a thin shim, without upsetting the indexing unduly.

Either way you might be able to fix it, and your spacers may be at fault here; most folk find it very difficult to even measure them with sufficient accuracy.

The Tifosi cassette on the recumbent shifts fine, but the chain climbs the cassette when wheeling the bike backwards. Someone else on this thread posted experiencing the same issue on their tandem.

I'm converting the upright hybrid from a 1x7 to a 2x9. It was another Tifosi cassette which rattled and clunked when pedalling with the bike upside down. The clunking was frequent but seemingly random with respect to the chain and cranks. Newly fitted cassette, chain, shifter and RD but all 9 speed and either new or little used.The shifter wasn't in fact connected, I was just pedalling in top with the cable disconnected. The rattling and clunking vanished upon swapping in the SRAM PG-980 cassette, all else the same.

EDIT: I might explore a thin shim between the 2 smallest cogs as you suggest. Guess I ought to also try it cabled up to see if it behaves in the other cogs. Come to think of it, I could try the 8th and 9th cogs from the third Tifosi cassette I have.

OR……you could put the new cassette on the P38 and the old one on the hybrid, as one of them is known to be ok.

[ANTONISH]

The Tifosi cassette on the recumbent shifts fine, but the chain climbs the cassette when wheeling the bike backwards. Someone else on this thread posted experiencing the same issue on their tandem.

When I was a child about 11yrs old my father told me that I must never wheel a derailleur geared bike backwards because it may damage the gears.
.Hence I always lift the rear wheel when moving the bike backwards - it makes me uncomfortable to see others wheeling a bike backwards.