Basso Diamante v Tarmac SL7 sizing v Synapse

Questions about bike hire abroad and everything light bike related. No off-topic chat please

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Beancouter
Posts: 974
Joined: Fri Apr 20, 2012 9:04 pm

by Beancouter

Currently spending a stupid amount of time researching a new frame that has high stack but not too much reach (around size 56). In short I don’t want a load of spacers!! My reference is my Synapse which allows me to ride with 12mm of spacers, in part as it has a 173mm head tube but also the fork crown height is 10mm higher than typical for a road disc fork.

My research, using Geometrygeeks subscription, has led me to a few bikes I hadn’t previously considered, or wasn’t aware of. Theoretically money isn’t a limiting factor, albeit not ready for custom (which will come but don’t want the wait time) but I am fickle on my bikes and don’t want to throw £000s at something I am going to take a massive hit on in 2 years.

I have placed an order for a Basso Astra which gets to the right answer with a 180mm head tube, but is going to be a struggle to get below 6.8kg (which is mandatory!). When I started looking at the 2023 Diamanté this morning spotted that it had a pretty good stack height for a 56 - the bit that makes no sense to me is that it only has a 155mm head tube but a 584mm stack - that’s only 6mm less than the synapse, which has an 18mm longer headtube.

Any ideas what’s going on with the Basso geo? Pictures below of comparisons to Synapse and SL7

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Last edited by Beancouter on Sun Oct 30, 2022 11:20 am, edited 1 time in total.

Beancouter
Posts: 974
Joined: Fri Apr 20, 2012 9:04 pm

by Beancouter

Wondered if it was down to the fork length…

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Beancouter
Posts: 974
Joined: Fri Apr 20, 2012 9:04 pm

by Beancouter

In case anyone is interested (!), I have been informed that the axles crown height is 394mm, so my instincts are correct and the stack is high for a 155mm head tube.


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wheelsONfire
Posts: 5377
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

BMC Roadmachine, Ax Lightness Vial EVO Race or Vial EVO Disc.
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

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