Just finished my latest build, it's been a long time since I've ridden a aluminium hard tail so was just messing about on the street and it makes an awful twanging racket when landing from bunnyhops on tarmac – is this usual?

I've checked all the bolts etc… are tight…

spokes? are the wheels a new build too?They twang

Nope only new bits are saddle/post, frame and headset.

Thought at first the wheel was loose in the dropout but that was fine, as were all the bolts I could spot. Really odd.

is your rear mech hitting the dropout? or chain slap can make a racket is its quite a boxy frame!

Oh….good call… rear mech might be doing it didn't think of that one, I'll check in the morning now.

It's short cage XTR mech setup 1×9 with a pretty short chain so would have thought that would be alright. Got a chainstay protector on as well.

Ragley mmmbop so quite boxy!

"awful twanging racket when landing from bunnyhops on tarmac"
try not to damage the road, somebody has to pay for all those potholes.

I wouldnt risk bunnyhopping on an alu frame, theres a fairly high chance it will crack or worse, snap. Alu is best used for light xc riding.

an awful twanging racket when landing

that'll be your knees, Alu frames can be a bit harsh.

I wouldnt risk bunnyhopping on an alu frame, theres a fairly high chance it will crack or worse, snap. Alu is best used for light xc riding.

You're 'aving a laff, right? 😯

It's not the frame material that matters, it's what it's built for, it's intended use! I'd hazzard a guess that 99% of full sussers are alloy, including the big AM, DH and FR bikes! 😀

Alu is best used for light xc riding.

bless.

"I wouldnt risk bunnyhopping on an alu frame, theres a fairly high chance it will crack or worse, snap. Alu is best used for light xc riding. "

Joke, yah?

david is in fine form today.

It's not the frame material that matters, it's what it's built for, it's intended use! I'd hazzard a guess that 99% of full sussers are alloy, including the big AM, DH and FR bikes!

Full sussers are alu because aluminium can easily be made into fancy, swoopy shapes by hydroforming or similar. This means they appeal even more to the 'all the gear, no idea' full sus riders who care more about what there bike looks like rather than how it performs.

Full sus is pointless unless your riding world cup dh tracks

*thows the troll a buiscuit and a cup of tea, he could be here a while!*

Full sus is pointless unless your riding world cup dh tracks

Make sure you tell Trek, Specialized, Giant, Orange, Cannondale etc. They might stop making their race FS bikes when they realise the truth…. 8)

@davidtaylforth

So you wouldn't bunny-hop one of these then?

http://www.evanscycles.com/products/mondraker/play-2-2010-jump-bike-ec021882

I wouldn't, Its from Evans

So you wouldn't bunny-hop one of these then?

Its what looks to be a 'dirt jump' style frame, yet it has a dual chainring setup. They clearly dont have a clue how to spec a bike, let alone build a strong frame? I dont think I could trust it for a bunnyhop.

It also has a white stem and a white saddle – On 2nd thoughts i wouldnt be seen riding it at all.

**slaps forehead**

Have we been reading a touch too much MBUK?

I've had lots of HT frames in both steel and Aluminium, and never yet managed to crack one of them, they will pretty much all stand up to bunny hops and a fair bit more besides…

To be fair, alloy is the only material I've owned that I've not broken!

I think Kaesae is back, with a new user name!

i was thinking similar mr_mills 🙂

and as for that carbon fibre stuff, well its only used for little old ladies shoppers as its just to fragile for anything else…. 😯

chomp chomp chomp.

this is mr taylforth from the show me your radness thread:

on an aluminium alloy frame.

My sides are splitting.

Dont know whats so funny, the frame failed shortly after that jump and I landed head first into some humble pie. That was in 2007 I think, havent ridden an alloy bike since then.

Ok, my bad. I thought you were just winding us up, and that you actually jumped alu frames everyday or something.

davidtaylforth – Member
I wouldnt risk bunnyhopping on an alu frame, theres a fairly high chance it will crack or worse, snap. Alu is best used for light xc riding.

You see when I read this at first it seemed quite drole. I read your following posts and it seems you're serious. 😯

It only failed because it was made from old filing cabinets…

Still talking cobblers…

he was only doing gentle xc on it anyway.

he was only doing gentle xc on it anyway.

That is relatively gentle xxc. The problem with alot of people on here is they are too 'closed minded' to alot of the new emerging riding styles, they are still stuck in the 90's where xc involved traipsing round a muddy field.

Open your minds people, for the good of our sport

So you had one faulty Aluminium frame. And from this you extrapolate that all Aluminium frames are weak!?

I'm sorry, but the world's leading DH bike manufacturers disagree with you.

I just rode off a kerb and it snapped…….honest Mr.

That is relatively gentle xxc

so Alu's not even any good for xc either?

'new riding styles' equals showing your pants when on the bike and having to walk like you've got rickets to keep your trews up off it I take it, because there's nothing much new under the sun when it comes to bicycles.

I think GillianTaylforth is having a bad day.

What a load of cobblers.

A little ditty I made up (a materials engineer thought it was "pretty good")

"if it goes ping, it won't ding"

Flick a steel tubed frame, it will give off a nice pinging noise

Flick an alloy one, its a dull thudding sound.

my alloy one pings more than my inbred :-p

Theres always one. 🙄