Yet Another Cycling Forum
General Category => The Knowledge => Topic started by: Dtcman on 11 February, 2019, 04:01:12 pm
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Ok, I have just bought a disc specific deep road rim to build a new dynohub front wheel. It has just turned up and is asymmetric. It's a Ryde DP18 rim. I need a 30mm deep black rim to match the rear wheel and choices were limited in 32 hole.
I've re-read the blurb and it says "The asymmetric shape even adds more durability to the DP18 Sped Disc wheels. The use goes from road racing to gravel racing and cyclocross" I hadn't picked up on that when I ordered. I always thought asymmetric was only for rear dished wheels.
is this correct for a front disc rim?
and
if so, which way around do they go?
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you can use asymmetric rims on front disc brake hubs (with the holes offset to the right) and it usually results in a stronger wheel. The offset in the rim usually doesn't fully equalise the spoke tensions; it varies a bit from one hub to another but there is quite a lot of dish on most standard disc brake front wheels.
What hub are you using?
cheers
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What hub are you using?
cheers
Love mud Juice (SP DYNAMO PD-8) dynamo hub.
https://www.alpkit.com/products/love-mud-juice
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unlike many disc brake front hubs PD-8 has a narrow and almost symmetric flange spacing (but unequal flange diameters) so spoke tensions (eg for 32x3) end up within ~1% of one another with a symmetric rim. In this case unfortunately an asymmetric rim will do you no good; it will only make the spoke tension imbalance worse. I'd suggest that you get a symmetric rim instead.
cheers