Blackspire Stinger- correct angle of dangle?

Northwind

Just finished fannying about with my stinger (it doesn't mention in the fitment guide "First cut away half of bracket with an anglegrinder, then mash with a hammer", but it seems to work), just wondered if this looks alright?





Seems to work but I don't have as much time to test it out as I'd like so just looking for a second opinion

ilovedirt

What did you have to cut at the bracket with an angle grinder for? Looks alright to me, as long as it puts some tension on the chain.

nicklouse

it does not need to put any tension on the chain at all.

as its job it to stop the chain leaving the bottom of the rings.

looks OK.

ilovedirt

nicklouse wrote:

it does not need to put any tension on the chain at all.

as its job it to stop the chain leaving the bottom of the rings.

I know that, but if it puts tension on the chain, you can be sure it's doing it's job properly, and it will be less likely to come off.

Anonymous

looks like the one on mine so i reckon it looks fine

mine is in the string link of my signature for comparison.

nicklouse

ilovedirt wrote:

nicklouse wrote:

it does not need to put any tension on the chain at all.

as its job it to stop the chain leaving the bottom of the rings.

I know that, but if it puts tension on the chain, you can be sure it's doing it's job properly, and it will be less likely to come off.

it can not put any tension on the chain. there is no spring! the mech puts the tension onto the chain.

ilovedirt

nicklouse wrote:

ilovedirt wrote:

nicklouse wrote:

it does not need to put any tension on the chain at all.

as its job it to stop the chain leaving the bottom of the rings.

I know that, but if it puts tension on the chain, you can be sure it's doing it's job properly, and it will be less likely to come off.

it can not put any tension on the chain. there is no spring! the mech puts the tension onto the chain.

Technicalities aside, you knew what I meant.

Northwind

ilovedirt wrote:

What did you have to cut at the bracket with an angle grinder for?

It was either that or the chainstay

Thanks folks. Haven't a clue what I'm doing with these things really but it seems like a good idea for the hols.

nicklouse

ilovedirt wrote:

nicklouse wrote:

ilovedirt wrote:

nicklouse wrote:

it does not need to put any tension on the chain at all.

as its job it to stop the chain leaving the bottom of the rings.

I know that, but if it puts tension on the chain, you can be sure it's doing it's job properly, and it will be less likely to come off.

it can not put any tension on the chain. there is no spring! the mech puts the tension onto the chain.

Technicalities aside, you knew what I meant.

No beacause if you wrap the chain around the ring more to add tension you are actually making the required chain length longer so the mech ends up in the same place as it was before.

So no added tension or a too short chain. which on a fully is a bad idea and on a Kona a bigger bad idea.

Northwind

You calling my bike a Kona? Grr.

nicklouse

hard to tell.

looks like Tuners pretend FSR set up.

Northwind

It does have its name written on the side in big letters also

Thanks all, feeling much happier about it now. If worst comes to worst the roller comes off easily enough

peter413

Now Nick has said it, it does look like a Kona if you squint, sorry

Koiler

nicklouse wrote:

So no added tension or a too short chain. which on a fully is a bad idea and on a Kona a bigger bad idea.

sorry to hijack but...

what does tat mean exactly? i have a kona, and a stinger, fitted the same way as northwind.

is it going to blow up? :shock:

Anonymous

Konas have large amounts of chain growth. That means, as the suspension compresses, the length from chainring to sprockets grows substantially.
If you chain is too short, it can cause problems, since the mech will be unable to compensate for it.

Koiler

thanks

ok, so when i fitted it, i went from a triple (22/32/44) to a double (22/36) and swapped to the shorter caged SLX mech. i sized the chain using the big-big method but included the singer in the measurement.

does that sound about right?

i rarely, if ever use 36/32 and im soon to be swapping to an 11-28 cassette

should i take the shock out and see what happens to the chain/ mech?

im worried now.

(again, sorry for hijackin)

Anonymous

nah, sounds fine. The problem occurs when the chain is TOO short. Fitting it big big (including stinger) will be fine.

Personally, I don't think (off the top of my head - I can't remember the figures) that Konas do have particularly large amounts of chain growth, but Nick usually knows best.

Koiler

thanks man!

[/ hijack]

Northwind

peter413 wrote:

Now Nick has said it, it does look like a Kona if you squint, sorry

Well, they both look like meccano cranes more than bikes if that's what you mean

peter413

Its just that swingarm/shock plate, its mahoosive

Although, have you seen the one on a kona stab up close :shock:

Northwind

If I get the 6 inch rocker it'll be even more ugly. Tempting...