fm028/29 isp topper

[brearley]

Looks like I'm getting a dengfu fm029 isp frame soon.
having done a search it seems the isp topper is a bit rubbish. Having looked around the outer diameter of the isp is 37.2mm can anybody tell me which lightweight alternative I can buy or confirm what you have on your dengfu bike?

[Valbrona]

I use one of these frames. The drawing shows 37mm, but I've not measured the top of my seat tube. And ... after lots of looking I have not been able to find a better alternative.

[thprice]

Toppers from 2 manufacturers may be suitable:

• Woodman http://www.woodmancomponents.com
• Tune http://www.tune.de/

[5 8 5]

Problem is that it's an oddball size.

Re. Woodman, I contacted them last year and they told me that 34.9 was the only size currently available.
Of course that could have now changed.

[5 8 5]

@brearley
are you sure it's 37.2? It seems to be a strange size.

[tinozee]

Anyone know if the Ritchey WCS 1-Bolt Mast Topper, 38.35mmx70mm fits this frame? That's the same size as the largest Tune Cappy. Maybe it needs a shim?

[knef]

Any aftermarket ISP toppers need to be shimmed, eg with sheets cut out from cans. Which will increase the chance on seatpost slippage. I kept the original topper because of this. Problem is, it has too much setback for my liking. Grrr

[89daytona]

KCNC Majestic

[JackDaniels]

If the diameter is the same as the fm015, then you 'can' fit a kcnc, but it requires significant dremmeling. I wouldn't recommend it.

[tinozee]

Good product to make then and sell to all the FM028/9 owners out there. I ride an s-works tarmac and a ridley helium and I want to try one of these frames after reading all the chinese carbon threads. So curious how it will compare.

[brearley]

I should be finding out when my frame will arrive soon then after painting I will see whether the weight saving between the standard and ritchey one is big enough. Setback won't be an issue for me just depends on weight savings.
Buying this as a race bike so I'm hoping its plenty stuff and handles well.