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 Post subject: fm028/29 isp topper
PostPosted: Sat Apr 20, 2013 9:26 am 
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Joined: Mon Aug 11, 2008 10:08 pm
Posts: 341
Location: Hull
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?


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 Post subject: fm028/29 isp topper
Posted: Sat Apr 20, 2013 9:26 am 


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 Post subject: Re: fm028/29 isp topper
PostPosted: Sat Apr 20, 2013 12:11 pm 
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Joined: Fri Oct 28, 2011 3:25 am
Posts: 748
Location: United Kingdom of Great Britain and Northern Ireland
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.


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 Post subject: Re: fm028/29 isp topper
PostPosted: Sat Apr 20, 2013 12:46 pm 
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Joined: Sun Jul 17, 2011 6:34 am
Posts: 157
Toppers from 2 manufacturers may be suitable:


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 Post subject: Re: fm028/29 isp topper
PostPosted: Sat Apr 20, 2013 1:34 pm 
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Joined: Sat Jul 29, 2006 2:36 am
Posts: 1131
Location: UK
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.


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 Post subject: Re: fm028/29 isp topper
PostPosted: Sat Apr 20, 2013 1:41 pm 
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Joined: Sat Jul 29, 2006 2:36 am
Posts: 1131
Location: UK
@brearley
are you sure it's 37.2? It seems to be a strange size.


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 Post subject: Re: fm028/29 isp topper
PostPosted: Mon Apr 22, 2013 7:57 am 
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Joined: Wed Jun 01, 2011 7:53 am
Posts: 265
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?


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 Post subject: Re: fm028/29 isp topper
PostPosted: Mon Apr 22, 2013 10:02 am 
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Joined: Tue Jan 23, 2007 12:36 am
Posts: 152
Location: Belgium
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


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 Post subject: Re: fm028/29 isp topper
PostPosted: Mon Apr 22, 2013 4:40 pm 
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Joined: Sun Aug 29, 2010 12:07 am
Posts: 208
KCNC Majestic

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@racecarbrian


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 Post subject: Re: fm028/29 isp topper
PostPosted: Mon Apr 22, 2013 5:24 pm 
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Joined: Tue Oct 04, 2011 5:15 am
Posts: 80
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.

Image


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 Post subject: Re: fm028/29 isp topper
PostPosted: Tue Apr 23, 2013 12:14 am 
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Joined: Wed Jun 01, 2011 7:53 am
Posts: 265
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.


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 Post subject: Re: fm028/29 isp topper
PostPosted: Tue Apr 23, 2013 6:11 pm 
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Joined: Mon Aug 11, 2008 10:08 pm
Posts: 341
Location: Hull
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.


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 Post subject: Re: fm028/29 isp topper
Posted: Tue Apr 23, 2013 6:11 pm 


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