Replacement saddle to seatpost clamp

[rliu]

Hi, there are plenty of seatpost clamps out there for the post to the frame, but harder to filter these out to get to seatpost to saddle clamps. I have had a Deda Drittisimo seatpost since about 2013, and they use basically two M6 bolts:

Over time there has been so much gunk and dirt in the top fixings that both bolts have become completely seized and stuck. I therefore decided to just break one off, thinking it should be easy to get two bolts and a wide enough fixing, but have actually found this quite a laborious process. Does anyone have any links to steer me in the right direction?

One thought I've had is using some spring toggles?

 

[Hugh Manatee]

Two m6 bolts shouldn't be too much of a problem. The other bits that the bolts tighten into would have to be shaped and dimensioned to engage nicely with the saddle rails?
Do you know any model engineers? Someone with a lathe? I suppose with patience, some Dykem marking fluid and some files you could have a go...
The lathe would be a lot easier though!

 

[cyberknight]

looks exactly the same attatchment as i have on my fleabay carbon post , might be worth just buying a cheap post with the same fixing?

 

[raleighnut]

^^^^^^^ +1 just get a new seatpost.

 

[matticus]

I'm having the same problem. There are only (I think) a limited range of bolt types, yet the online places don't seem to stock them!
Buying a new seatpost for want of an M6 allen-head bolt is absurd.[I've scavenged them from other unused bikes.]

I expect I'll just get a couple from a general hardware store, but that's tricksy at the moment as they're mostly just click-n-collect. pfft.

 

[rliu]

looks exactly the same attatchment as i have on my fleabay carbon post , might be worth just buying a cheap post with the same fixing?

Yes that was another thought process I had, as I've seen same bolt system being used on some £13 seatposts on Amazon, dunno what I'd actually do with the post itself though as the Amazon page has other buyers showing their posts snapping

View: https://www.amazon.co.uk/Yareta-carbon-bicycle-Cycling-%CE%A630-9%C3%97330mm/dp/B07KXLB5GG/ref=sr_1_1?dchild=1&m=A13NNZKCMIANB3&marketplaceID=A1F83G8C2ARO7P&qid=1587761781&s=merchant-items&sr=1-1&th=1&psc=1

 

[cyberknight]

 

[rliu]

Seen some reviews saying they felt the carbon grade was poor and the light advertised weight comes from skimping on thickness, any similar observations your end?

View attachment 517784

 

[cyberknight]

Seen some reviews saying they felt the carbon grade was poor and the light advertised weight comes from skimping on thickness, any similar observations your end?

I dunno i was just saying that the clamps on this are the same as the OP so if he wanted to get the same bits at the expense of a cheap post .I cant compare to others as as im around 69 kg i havent had issues with it .